Question: When would you use kube-controller-manager?

Answer: kube-controller-managerSynopsisThe Kubernetes controller manager is a daemon that embeds the core control loops shipped with Kubernetes. In applications of robotics and automation, a control loop is a non-terminating loop that regulates the state of the system. In Kubernetes, a controller is a control loop that watches the shared state of the cluster through the apiserver and makes changes attempting to move the current state towards the desired state. Examples of controllers that ship with Kubernetes today are the replication controller, endpoints controller, namespace controller, and serviceaccounts controller.kube-controller-manager [flags] Options--allocate-node-cidrsShould CIDRs for Pods be allocated and set on the cloud provider. Requires --cluster-cidr.--allow-metric-labels stringToString Default: []The map from metric-label to value allow-list of this label. The key's format is <MetricName>,<LabelName>. The value's format is <allowed_value>,<allowed_value>...e.g. metric1,label1='v1,v2,v3', metric1,label2='v1,v2,v3' metric2,label1='v1,v2,v3'.--allow-metric-labels-manifest stringThe path to the manifest file that contains the allow-list mapping. The format of the file is the same as the flag --allow-metric-labels. Note that the flag --allow-metric-labels will override the manifest file.--attach-detach-reconcile-sync-period duration Default: 1m0sThe reconciler sync wait time between volume attach detach. This duration must be larger than one second, and increasing this value from the default may allow for volumes to be mismatched with pods.--authentication-kubeconfig stringkubeconfig file pointing at the 'core' kubernetes server with enough rights to create tokenreviews.authentication.k8s.io. This is optional. If empty, all token requests are considered to be anonymous and no client CA is looked up in the cluster.--authentication-skip-lookupIf false, the authentication-kubeconfig will be used to lookup missing authentication configuration from the cluster.--authentication-token-webhook-cache-ttl duration Default: 10sThe duration to cache responses from the webhook token authenticator.--authentication-tolerate-lookup-failureIf true, failures to look up missing authentication configuration from the cluster are not considered fatal. Note that this can result in authentication that treats all requests as anonymous.--authorization-always-allow-paths strings Default: "/healthz,/readyz,/livez"A list of HTTP paths to skip during authorization, i.e. these are authorized without contacting the 'core' kubernetes server.--authorization-kubeconfig stringkubeconfig file pointing at the 'core' kubernetes server with enough rights to create subjectaccessreviews.authorization.k8s.io. This is optional. If empty, all requests not skipped by authorization are forbidden.--authorization-webhook-cache-authorized-ttl duration Default: 10sThe duration to cache 'authorized' responses from the webhook authorizer.--authorization-webhook-cache-unauthorized-ttl duration


Question: What are the benefits of kube-controller-manager?

Answer: kube-controller-managerSynopsisThe Kubernetes controller manager is a daemon that embeds the core control loops shipped with Kubernetes. In applications of robotics and automation, a control loop is a non-terminating loop that regulates the state of the system. In Kubernetes, a controller is a control loop that watches the shared state of the cluster through the apiserver and makes changes attempting to move the current state towards the desired state. Examples of controllers that ship with Kubernetes today are the replication controller, endpoints controller, namespace controller, and serviceaccounts controller.kube-controller-manager [flags] Options--allocate-node-cidrsShould CIDRs for Pods be allocated and set on the cloud provider. Requires --cluster-cidr.--allow-metric-labels stringToString Default: []The map from metric-label to value allow-list of this label. The key's format is <MetricName>,<LabelName>. The value's format is <allowed_value>,<allowed_value>...e.g. metric1,label1='v1,v2,v3', metric1,label2='v1,v2,v3' metric2,label1='v1,v2,v3'.--allow-metric-labels-manifest stringThe path to the manifest file that contains the allow-list mapping. The format of the file is the same as the flag --allow-metric-labels. Note that the flag --allow-metric-labels will override the manifest file.--attach-detach-reconcile-sync-period duration Default: 1m0sThe reconciler sync wait time between volume attach detach. This duration must be larger than one second, and increasing this value from the default may allow for volumes to be mismatched with pods.--authentication-kubeconfig stringkubeconfig file pointing at the 'core' kubernetes server with enough rights to create tokenreviews.authentication.k8s.io. This is optional. If empty, all token requests are considered to be anonymous and no client CA is looked up in the cluster.--authentication-skip-lookupIf false, the authentication-kubeconfig will be used to lookup missing authentication configuration from the cluster.--authentication-token-webhook-cache-ttl duration Default: 10sThe duration to cache responses from the webhook token authenticator.--authentication-tolerate-lookup-failureIf true, failures to look up missing authentication configuration from the cluster are not considered fatal. Note that this can result in authentication that treats all requests as anonymous.--authorization-always-allow-paths strings Default: "/healthz,/readyz,/livez"A list of HTTP paths to skip during authorization, i.e. these are authorized without contacting the 'core' kubernetes server.--authorization-kubeconfig stringkubeconfig file pointing at the 'core' kubernetes server with enough rights to create subjectaccessreviews.authorization.k8s.io. This is optional. If empty, all requests not skipped by authorization are forbidden.--authorization-webhook-cache-authorized-ttl duration Default: 10sThe duration to cache 'authorized' responses from the webhook authorizer.--authorization-webhook-cache-unauthorized-ttl duration


Question: What is Synopsis?

Answer: T h e   K u b e r n e t e s   c o n t r o l l e r   m a n a g e r   i s   a   d a e m o n   t h a t   e m b e d s   t h e   c o r e   c o n t r o l   l o o p s   s h i p p e d   w i t h   K u b e r n e t e s .   I n   a p p l i c a t i o n s   o f   r o b o t i c s   a n d   a u t o m a t i o n ,   a   c o n t r o l   l o o p   i s   a   n o n - t e r m i n a t i n g   l o o p   t h a t   r e g u l a t e s   t h e   s t a t e   o f   t h e   s y s t e m .   I n   K u b e r n e t e s ,   a   c o n t r o l l e r   i s   a   c o n t r o l   l o o p   t h a t   w a t c h e s   t h e   s h a r e d   s t a t e   o f   t h e   c l u s t e r   t h r o u g h   t h e   a p i s e r v e r   a n d   m a k e s   c h a n g e s   a t t e m p t i n g   t o   m o v e   t h e   c u r r e n t   s t a t e   t o w a r d s   t h e   d e s i r e d   s t a t e .   E x a m p l e s   o f   c o n t r o l l e r s   t h a t   s h i p   w i t h   K u b e r n e t e s   t o d a y   a r e   t h e   r e p l i c a t i o n   c o n t r o l l e r ,   e n d p o i n t s   c o n t r o l l e r ,   n a m e s p a c e   c o n t r o l l e r ,   a n d   s e r v i c e a c c o u n t s   c o n t r o l l e r .   k u b e - c o n t r o l l e r - m a n a g e r   [ f l a g s ]


Question: What is Options?

Answer: S h o u l d   C I D R s   f o r   P o d s   b e   a l l o c a t e d   a n d   s e t   o n   t h e   c l o u d   p r o v i d e r .   R e q u i r e s   - - c l u s t e r - c i d r .   T h e   m a p   f r o m   m e t r i c - l a b e l   t o   v a l u e   a l l o w - l i s t   o f   t h i s   l a b e l .   T h e   k e y ' s   f o r m a t   i s   < M e t r i c N a m e > , < L a b e l N a m e > .   T h e   v a l u e ' s   f o r m a t   i s   < a l l o w e d _ v a l u e > , < a l l o w e d _ v a l u e > . . . e . g .   m e t r i c 1 , l a b e l 1 = ' v 1 , v 2 , v 3 ' ,   m e t r i c 1 , l a b e l 2 = ' v 1 , v 2 , v 3 '   m e t r i c 2 , l a b e l 1 = ' v 1 , v 2 , v 3 ' .   T h e   p a t h   t o   t h e   m a n i f e s t   f i l e   t h a t   c o n t a i n s   t h e   a l l o w - l i s t   m a p p i n g .   T h e   f o r m a t   o f   t h e   f i l e   i s   t h e   s a m e   a s   t h e   f l a g   - - a l l o w - m e t r i c - l a b e l s .   N o t e   t h a t   t h e   f l a g   - - a l l o w - m e t r i c - l a b e l s   w i l l   o v e r r i d e   t h e   m a n i f e s t   f i l e .   T h e   r e c o n c i l e r   s y n c   w a i t   t i m e   b e t w e e n   v o l u m e   a t t a c h   d e t a c h .   T h i s   d u r a t i o n   m u s t   b e   l a r g e r   t h a n   o n e   s e c o n d ,   a n d   i n c r e a s i n g   t h i s   v a l u e   f r o m   t h e   d e f a u l t   m a y   a l l o w   f o r   v o l u m e s   t o   b e   m i s m a t c h e d   w i t h   p o d s .   k u b e c o n f i g   f i l e   p o i n t i n g   a t   t h e   ' c o r e '   k u b e r n e t e s   s e r v e r   w i t h   e n o u g h   r i g h t s   t o   c r e a t e   t o k e n r e v i e w s . a u t h e n t i c a t i o n . k 8 s . i o .   T h i s   i s   o p t i o n a l .   I f   e m p t y ,   a l l   t o k e n   r e q u e s t s   a r e   c o n s i d e r e d   t o   b e   a n o n y m o u s   a n d   n o   c l i e n t   C A   i s   l o o k e d   u p   i n   t h e   c l u s t e r .   I f   f


Question: What is Assign Pods to Nodes?

Answer: Assign Pods to NodesThis page shows how to assign a Kubernetes Pod to a particular node in a Kubernetes cluster.Before you beginYou need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. If you do not already have a cluster, you can create one by using minikube or you can use one of these Kubernetes playgrounds:iximiuz LabsKillercodaKodeKloudPlay with KubernetesTo check the version, enter kubectl version.Add a label to a nodeList the nodes in your cluster, along with their labels:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 Choose one of your nodes, and add a label to it:kubectl label nodes <your-node-name> disktype=ssd where <your-node-name> is the name of your chosen node.Verify that your chosen node has a disktype=ssd label:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,disktype=ssd,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 In the preceding output, you can see that the worker0 node has a disktype=ssd label.Create a pod that gets scheduled to your chosen nodeThis pod configuration file describes a pod that has a node selector, disktype: ssd. This means that the pod will get scheduled on a node that has a disktype=ssd label.pods/pod-nginx.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent nodeSelector: disktype: ssd Use the configuration file to create a pod that will get scheduled on your chosen node:kubectl apply -f https://k8s.io/examples/pods/pod-nginx.yaml Verify that the pod is running on your chosen node:kubectl get pods --output=wide The output is similar to this:NAME READY STATUS RESTARTS AGE IP NODE nginx 1/1 Running 0 13s 10.200.0.4 worker0 Create a pod that gets scheduled to specific nodeYou can also schedule a pod to one specific node via setting nodeName.pods/pod-nginx-specific-node.yaml apiVersion: v1 kind: Pod metadata: name: nginx spec: nodeName: foo-node # schedule pod to specific node containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent Use the configuration file to create a pod that will get scheduled on foo-node only.What's nextLearn more about labels and selectors.Learn more about nodes.


Question: How does Assign Pods to Nodes work?

Answer: Assign Pods to NodesThis page shows how to assign a Kubernetes Pod to a particular node in a Kubernetes cluster.Before you beginYou need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. If you do not already have a cluster, you can create one by using minikube or you can use one of these Kubernetes playgrounds:iximiuz LabsKillercodaKodeKloudPlay with KubernetesTo check the version, enter kubectl version.Add a label to a nodeList the nodes in your cluster, along with their labels:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 Choose one of your nodes, and add a label to it:kubectl label nodes <your-node-name> disktype=ssd where <your-node-name> is the name of your chosen node.Verify that your chosen node has a disktype=ssd label:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,disktype=ssd,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 In the preceding output, you can see that the worker0 node has a disktype=ssd label.Create a pod that gets scheduled to your chosen nodeThis pod configuration file describes a pod that has a node selector, disktype: ssd. This means that the pod will get scheduled on a node that has a disktype=ssd label.pods/pod-nginx.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent nodeSelector: disktype: ssd Use the configuration file to create a pod that will get scheduled on your chosen node:kubectl apply -f https://k8s.io/examples/pods/pod-nginx.yaml Verify that the pod is running on your chosen node:kubectl get pods --output=wide The output is similar to this:NAME READY STATUS RESTARTS AGE IP NODE nginx 1/1 Running 0 13s 10.200.0.4 worker0 Create a pod that gets scheduled to specific nodeYou can also schedule a pod to one specific node via setting nodeName.pods/pod-nginx-specific-node.yaml apiVersion: v1 kind: Pod metadata: name: nginx spec: nodeName: foo-node # schedule pod to specific node containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent Use the configuration file to create a pod that will get scheduled on foo-node only.What's nextLearn more about labels and selectors.Learn more about nodes.


Question: When would you use Assign Pods to Nodes?

Answer: Assign Pods to NodesThis page shows how to assign a Kubernetes Pod to a particular node in a Kubernetes cluster.Before you beginYou need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. If you do not already have a cluster, you can create one by using minikube or you can use one of these Kubernetes playgrounds:iximiuz LabsKillercodaKodeKloudPlay with KubernetesTo check the version, enter kubectl version.Add a label to a nodeList the nodes in your cluster, along with their labels:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 Choose one of your nodes, and add a label to it:kubectl label nodes <your-node-name> disktype=ssd where <your-node-name> is the name of your chosen node.Verify that your chosen node has a disktype=ssd label:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,disktype=ssd,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 In the preceding output, you can see that the worker0 node has a disktype=ssd label.Create a pod that gets scheduled to your chosen nodeThis pod configuration file describes a pod that has a node selector, disktype: ssd. This means that the pod will get scheduled on a node that has a disktype=ssd label.pods/pod-nginx.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent nodeSelector: disktype: ssd Use the configuration file to create a pod that will get scheduled on your chosen node:kubectl apply -f https://k8s.io/examples/pods/pod-nginx.yaml Verify that the pod is running on your chosen node:kubectl get pods --output=wide The output is similar to this:NAME READY STATUS RESTARTS AGE IP NODE nginx 1/1 Running 0 13s 10.200.0.4 worker0 Create a pod that gets scheduled to specific nodeYou can also schedule a pod to one specific node via setting nodeName.pods/pod-nginx-specific-node.yaml apiVersion: v1 kind: Pod metadata: name: nginx spec: nodeName: foo-node # schedule pod to specific node containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent Use the configuration file to create a pod that will get scheduled on foo-node only.What's nextLearn more about labels and selectors.Learn more about nodes.


Question: What are the benefits of Assign Pods to Nodes?

Answer: Assign Pods to NodesThis page shows how to assign a Kubernetes Pod to a particular node in a Kubernetes cluster.Before you beginYou need to have a Kubernetes cluster, and the kubectl command-line tool must be configured to communicate with your cluster. It is recommended to run this tutorial on a cluster with at least two nodes that are not acting as control plane hosts. If you do not already have a cluster, you can create one by using minikube or you can use one of these Kubernetes playgrounds:iximiuz LabsKillercodaKodeKloudPlay with KubernetesTo check the version, enter kubectl version.Add a label to a nodeList the nodes in your cluster, along with their labels:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 Choose one of your nodes, and add a label to it:kubectl label nodes <your-node-name> disktype=ssd where <your-node-name> is the name of your chosen node.Verify that your chosen node has a disktype=ssd label:kubectl get nodes --show-labels The output is similar to this:NAME STATUS ROLES AGE VERSION LABELS worker0 Ready <none> 1d v1.13.0 ...,disktype=ssd,kubernetes.io/hostname=worker0 worker1 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker1 worker2 Ready <none> 1d v1.13.0 ...,kubernetes.io/hostname=worker2 In the preceding output, you can see that the worker0 node has a disktype=ssd label.Create a pod that gets scheduled to your chosen nodeThis pod configuration file describes a pod that has a node selector, disktype: ssd. This means that the pod will get scheduled on a node that has a disktype=ssd label.pods/pod-nginx.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent nodeSelector: disktype: ssd Use the configuration file to create a pod that will get scheduled on your chosen node:kubectl apply -f https://k8s.io/examples/pods/pod-nginx.yaml Verify that the pod is running on your chosen node:kubectl get pods --output=wide The output is similar to this:NAME READY STATUS RESTARTS AGE IP NODE nginx 1/1 Running 0 13s 10.200.0.4 worker0 Create a pod that gets scheduled to specific nodeYou can also schedule a pod to one specific node via setting nodeName.pods/pod-nginx-specific-node.yaml apiVersion: v1 kind: Pod metadata: name: nginx spec: nodeName: foo-node # schedule pod to specific node containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent Use the configuration file to create a pod that will get scheduled on foo-node only.What's nextLearn more about labels and selectors.Learn more about nodes.


Question: What is Assign Pods to Nodes?

Answer: T h i s   p a g e   s h o w s   h o w   t o   a s s i g n   a   K u b e r n e t e s   P o d   t o   a   p a r t i c u l a r   n o d e   i n   a   K u b e r n e t e s   c l u s t e r .


Question: What is Before you begin?

Answer: Y o u   n e e d   t o   h a v e   a   K u b e r n e t e s   c l u s t e r ,   a n d   t h e   k u b e c t l   c o m m a n d - l i n e   t o o l   m u s t   b e   c o n f i g u r e d   t o   c o m m u n i c a t e   w i t h   y o u r   c l u s t e r .   I t   i s   r e c o m m e n d e d   t o   r u n   t h i s   t u t o r i a l   o n   a   c l u s t e r   w i t h   a t   l e a s t   t w o   n o d e s   t h a t   a r e   n o t   a c t i n g   a s   c o n t r o l   p l a n e   h o s t s .   I f   y o u   d o   n o t   a l r e a d y   h a v e   a   c l u s t e r ,   y o u   c a n   c r e a t e   o n e   b y   u s i n g   m i n i k u b e   o r   y o u   c a n   u s e   o n e   o f   t h e s e   K u b e r n e t e s   p l a y g r o u n d s : i x i m i u z   L a b s K i l l e r c o d a K o d e K l o u d P l a y   w i t h   K u b e r n e t e s T o   c h e c k   t h e   v e r s i o n ,   e n t e r   k u b e c t l   v e r s i o n .   Y o u   n e e d   t o   h a v e   a   K u b e r n e t e s   c l u s t e r ,   a n d   t h e   k u b e c t l   c o m m a n d - l i n e   t o o l   m u s t   b e   c o n f i g u r e d   t o   c o m m u n i c a t e   w i t h   y o u r   c l u s t e r .   I t   i s   r e c o m m e n d e d   t o   r u n   t h i s   t u t o r i a l   o n   a   c l u s t e r   w i t h   a t   l e a s t   t w o   n o d e s   t h a t   a r e   n o t   a c t i n g   a s   c o n t r o l   p l a n e   h o s t s .   I f   y o u   d o   n o t   a l r e a d y   h a v e   a   c l u s t e r ,   y o u   c a n   c r e a t e   o n e   b y   u s i n g   m i n i k u b e   o r   y o u   c a n   u s e   o n e   o f   t h e s e   K u b e r n e t e s   p l a y g r o u n d s :   i x i m i u z   L a b s K i l l e r c o d a K o d e K l o u d P l a y   w i t h   K u b e r n e t e s   T o   c h e c k   t h e   v e r s i o n ,   e n t e r   k u b e c t l   v e r s i o n .


Question: What is Add a label to a node?

Answer: L i s t   t h e   n o d e s   i n   y o u r   c l u s t e r ,   a l o n g   w i t h   t h e i r   l a b e l s : k u b e c t l   g e t   n o d e s   - - s h o w - l a b e l s   T h e   o u t p u t   i s   s i m i l a r   t o   t h i s : N A M E   S T A T U S   R O L E S   A G E   V E R S I O N   L A B E L S   w o r k e r 0   R e a d y   < n o n e >   1 d   v 1 . 1 3 . 0   . . . , k u b e r n e t e s . i o / h o s t n a m e = w o r k e r 0   w o r k e r 1   R e a d y   < n o n e >   1 d   v 1 . 1 3 . 0   . . . , k u b e r n e t e s . i o / h o s t n a m e = w o r k e r 1   w o r k e r 2   R e a d y   < n o n e >   1 d   v 1 . 1 3 . 0   . . . , k u b e r n e t e s . i o / h o s t n a m e = w o r k e r 2   C h o o s e   o n e   o f   y o u r   n o d e s ,   a n d   a d d   a   l a b e l   t o   i t : k u b e c t l   l a b e l   n o d e s   < y o u r - n o d e - n a m e >   d i s k t y p e = s s d   w h e r e   < y o u r - n o d e - n a m e >   i s   t h e   n a m e   o f   y o u r   c h o s e n   n o d e . V e r i f y   t h a t   y o u r   c h o s e n   n o d e   h a s   a   d i s k t y p e = s s d   l a b e l : k u b e c t l   g e t   n o d e s   - - s h o w - l a b e l s   T h e   o u t p u t   i s   s i m i l a r   t o   t h i s : N A M E   S T A T U S   R O L E S   A G E   V E R S I O N   L A B E L S   w o r k e r 0   R e a d y   < n o n e >   1 d   v 1 . 1 3 . 0   . . . , d i s k t y p e = s s d , k u b e r n e t e s . i o / h o s t n a m e = w o r k e r 0   w o r k e r 1   R e a d y   < n o n e >   1 d   v 1 . 1 3 . 0   . . . , k u b e r n e t e s . i o / h o s t n a m e = w o r k e r 1   w o r k e r 2   R e a d y   < n o n e >   1 d   v 1 . 1 3 . 0   . . . , k u b e r n e t e s . i o / h o s t n a m e = w o r k e r 2   I n   t h e   p r e c e d i n g   o u t p u t ,   y o u   c a n   s e e   t h a t   t h e   w o r k e r 0   n o d e   h a s   a   d i s k t y p e = s s d   l a b e l .   L i s t   t h e   n o d e s   i n   y o u r   c l u s t e r ,   a l o n g   w


Question: What is Create a pod that gets scheduled to your chosen node?

Answer: T h i s   p o d   c o n f i g u r a t i o n   f i l e   d e s c r i b e s   a   p o d   t h a t   h a s   a   n o d e   s e l e c t o r ,   d i s k t y p e :   s s d .   T h i s   m e a n s   t h a t   t h e   p o d   w i l l   g e t   s c h e d u l e d   o n   a   n o d e   t h a t   h a s   a   d i s k t y p e = s s d   l a b e l .   a p i V e r s i o n :   v 1   k i n d :   P o d   m e t a d a t a :   n a m e :   n g i n x   l a b e l s :   e n v :   t e s t   s p e c :   c o n t a i n e r s :   -   n a m e :   n g i n x   i m a g e :   n g i n x   i m a g e P u l l P o l i c y :   I f N o t P r e s e n t   n o d e S e l e c t o r :   d i s k t y p e :   s s d   U s e   t h e   c o n f i g u r a t i o n   f i l e   t o   c r e a t e   a   p o d   t h a t   w i l l   g e t   s c h e d u l e d   o n   y o u r   c h o s e n   n o d e : k u b e c t l   a p p l y   - f   h t t p s : / / k 8 s . i o / e x a m p l e s / p o d s / p o d - n g i n x . y a m l   V e r i f y   t h a t   t h e   p o d   i s   r u n n i n g   o n   y o u r   c h o s e n   n o d e : k u b e c t l   g e t   p o d s   - - o u t p u t = w i d e   T h e   o u t p u t   i s   s i m i l a r   t o   t h i s : N A M E   R E A D Y   S T A T U S   R E S T A R T S   A G E   I P   N O D E   n g i n x   1 / 1   R u n n i n g   0   1 3 s   1 0 . 2 0 0 . 0 . 4   w o r k e r 0   U s e   t h e   c o n f i g u r a t i o n   f i l e   t o   c r e a t e   a   p o d   t h a t   w i l l   g e t   s c h e d u l e d   o n   y o u r   c h o s e n   n o d e :   k u b e c t l   a p p l y   - f   h t t p s : / / k 8 s . i o / e x a m p l e s / p o d s / p o d - n g i n x . y a m l   V e r i f y   t h a t   t h e   p o d   i s   r u n n i n g   o n   y o u r   c h o s e n   n o d e :   k u b e c t l   g e t   p o d s   - - o u t p u t = w i d e   T h e   o u t p u t   i s   s i m i l a r   t o   t h i s :   N A M E   R E A D Y   S T A T U S   R E S T A R T S   A G E   I P   N O D E   n g i n x   1 / 1   R u n n i n g   0


Question: What is Create a pod that gets scheduled to specific node?

Answer: Y o u   c a n   a l s o   s c h e d u l e   a   p o d   t o   o n e   s p e c i f i c   n o d e   v i a   s e t t i n g   n o d e N a m e .   a p i V e r s i o n :   v 1   k i n d :   P o d   m e t a d a t a :   n a m e :   n g i n x   s p e c :   n o d e N a m e :   f o o - n o d e   #   s c h e d u l e   p o d   t o   s p e c i f i c   n o d e   c o n t a i n e r s :   -   n a m e :   n g i n x   i m a g e :   n g i n x   i m a g e P u l l P o l i c y :   I f N o t P r e s e n t   U s e   t h e   c o n f i g u r a t i o n   f i l e   t o   c r e a t e   a   p o d   t h a t   w i l l   g e t   s c h e d u l e d   o n   f o o - n o d e   o n l y .


Question: What is What's next?

Answer: L e a r n   m o r e   a b o u t   l a b e l s   a n d   s e l e c t o r s . L e a r n   m o r e   a b o u t   n o d e s .


Question: What is Taints and Tolerations?

Answer: Taints and TolerationsNode affinity is a property of Pods that attracts them to a set of nodes (either as a preference or a hard requirement). Taints are the opposite -- they allow a node to repel a set of pods.Tolerations are applied to pods. Tolerations allow the scheduler to schedule pods with matching taints. Tolerations allow scheduling but don't guarantee scheduling: the scheduler also evaluates other parameters as part of its function.Taints and tolerations work together to ensure that pods are not scheduled onto inappropriate nodes. One or more taints are applied to a node; this marks that the node should not accept any pods that do not tolerate the taints.ConceptsYou add a taint to a node using kubectl taint. For example,kubectl taint nodes node1 key1=value1:NoSchedule places a taint on node node1. The taint has key key1, value value1, and taint effect NoSchedule. This means that no pod will be able to schedule onto node1 unless it has a matching toleration.To remove the taint added by the command above, you can run:kubectl taint nodes node1 key1=value1:NoSchedule- You specify a toleration for a pod in the PodSpec. Both of the following tolerations "match" the taint created by the kubectl taint line above, and thus a pod with either toleration would be able to schedule onto node1:tolerations: - key: "key1" operator: "Equal" value: "value1" effect: "NoSchedule" tolerations: - key: "key1" operator: "Exists" effect: "NoSchedule" The default Kubernetes scheduler takes taints and tolerations into account when selecting a node to run a particular Pod. However, if you manually specify the .spec.nodeName for a Pod, that action bypasses the scheduler; the Pod is then bound onto the node where you assigned it, even if there are NoSchedule taints on that node that you selected. If this happens and the node also has a NoExecute taint set, the kubelet will eject the Pod unless there is an appropriate tolerance set.Here's an example of a pod that has some tolerations defined:pods/pod-with-toleration.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent tolerations: - key: "example-key" operator: "Exists" effect: "NoSchedule" The default value for operator is Equal.A toleration "matches" a taint if the keys are the same and the effects are the same, and:the operator is Exists (in which case no value should be specified), orthe operator is Equal and the values should be equal.Note:There are two special cases:If the key is empty, then the operator must be Exists, which matches all keys and values. Note that the effect still needs to be matched at the same time.An empty effect matches all effects with key key1.The above example used the effect of NoSchedule. Alternatively, you can use the effect of PreferNoSchedule.The allowed values for the effect field are:NoExecuteThis affects pods that are already running on the node as follows:Pods that do not tolerate the tain


Question: How does Taints and Tolerations work?

Answer: Taints and TolerationsNode affinity is a property of Pods that attracts them to a set of nodes (either as a preference or a hard requirement). Taints are the opposite -- they allow a node to repel a set of pods.Tolerations are applied to pods. Tolerations allow the scheduler to schedule pods with matching taints. Tolerations allow scheduling but don't guarantee scheduling: the scheduler also evaluates other parameters as part of its function.Taints and tolerations work together to ensure that pods are not scheduled onto inappropriate nodes. One or more taints are applied to a node; this marks that the node should not accept any pods that do not tolerate the taints.ConceptsYou add a taint to a node using kubectl taint. For example,kubectl taint nodes node1 key1=value1:NoSchedule places a taint on node node1. The taint has key key1, value value1, and taint effect NoSchedule. This means that no pod will be able to schedule onto node1 unless it has a matching toleration.To remove the taint added by the command above, you can run:kubectl taint nodes node1 key1=value1:NoSchedule- You specify a toleration for a pod in the PodSpec. Both of the following tolerations "match" the taint created by the kubectl taint line above, and thus a pod with either toleration would be able to schedule onto node1:tolerations: - key: "key1" operator: "Equal" value: "value1" effect: "NoSchedule" tolerations: - key: "key1" operator: "Exists" effect: "NoSchedule" The default Kubernetes scheduler takes taints and tolerations into account when selecting a node to run a particular Pod. However, if you manually specify the .spec.nodeName for a Pod, that action bypasses the scheduler; the Pod is then bound onto the node where you assigned it, even if there are NoSchedule taints on that node that you selected. If this happens and the node also has a NoExecute taint set, the kubelet will eject the Pod unless there is an appropriate tolerance set.Here's an example of a pod that has some tolerations defined:pods/pod-with-toleration.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent tolerations: - key: "example-key" operator: "Exists" effect: "NoSchedule" The default value for operator is Equal.A toleration "matches" a taint if the keys are the same and the effects are the same, and:the operator is Exists (in which case no value should be specified), orthe operator is Equal and the values should be equal.Note:There are two special cases:If the key is empty, then the operator must be Exists, which matches all keys and values. Note that the effect still needs to be matched at the same time.An empty effect matches all effects with key key1.The above example used the effect of NoSchedule. Alternatively, you can use the effect of PreferNoSchedule.The allowed values for the effect field are:NoExecuteThis affects pods that are already running on the node as follows:Pods that do not tolerate the tain


Question: When would you use Taints and Tolerations?

Answer: Taints and TolerationsNode affinity is a property of Pods that attracts them to a set of nodes (either as a preference or a hard requirement). Taints are the opposite -- they allow a node to repel a set of pods.Tolerations are applied to pods. Tolerations allow the scheduler to schedule pods with matching taints. Tolerations allow scheduling but don't guarantee scheduling: the scheduler also evaluates other parameters as part of its function.Taints and tolerations work together to ensure that pods are not scheduled onto inappropriate nodes. One or more taints are applied to a node; this marks that the node should not accept any pods that do not tolerate the taints.ConceptsYou add a taint to a node using kubectl taint. For example,kubectl taint nodes node1 key1=value1:NoSchedule places a taint on node node1. The taint has key key1, value value1, and taint effect NoSchedule. This means that no pod will be able to schedule onto node1 unless it has a matching toleration.To remove the taint added by the command above, you can run:kubectl taint nodes node1 key1=value1:NoSchedule- You specify a toleration for a pod in the PodSpec. Both of the following tolerations "match" the taint created by the kubectl taint line above, and thus a pod with either toleration would be able to schedule onto node1:tolerations: - key: "key1" operator: "Equal" value: "value1" effect: "NoSchedule" tolerations: - key: "key1" operator: "Exists" effect: "NoSchedule" The default Kubernetes scheduler takes taints and tolerations into account when selecting a node to run a particular Pod. However, if you manually specify the .spec.nodeName for a Pod, that action bypasses the scheduler; the Pod is then bound onto the node where you assigned it, even if there are NoSchedule taints on that node that you selected. If this happens and the node also has a NoExecute taint set, the kubelet will eject the Pod unless there is an appropriate tolerance set.Here's an example of a pod that has some tolerations defined:pods/pod-with-toleration.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent tolerations: - key: "example-key" operator: "Exists" effect: "NoSchedule" The default value for operator is Equal.A toleration "matches" a taint if the keys are the same and the effects are the same, and:the operator is Exists (in which case no value should be specified), orthe operator is Equal and the values should be equal.Note:There are two special cases:If the key is empty, then the operator must be Exists, which matches all keys and values. Note that the effect still needs to be matched at the same time.An empty effect matches all effects with key key1.The above example used the effect of NoSchedule. Alternatively, you can use the effect of PreferNoSchedule.The allowed values for the effect field are:NoExecuteThis affects pods that are already running on the node as follows:Pods that do not tolerate the tain


Question: What are the benefits of Taints and Tolerations?

Answer: Taints and TolerationsNode affinity is a property of Pods that attracts them to a set of nodes (either as a preference or a hard requirement). Taints are the opposite -- they allow a node to repel a set of pods.Tolerations are applied to pods. Tolerations allow the scheduler to schedule pods with matching taints. Tolerations allow scheduling but don't guarantee scheduling: the scheduler also evaluates other parameters as part of its function.Taints and tolerations work together to ensure that pods are not scheduled onto inappropriate nodes. One or more taints are applied to a node; this marks that the node should not accept any pods that do not tolerate the taints.ConceptsYou add a taint to a node using kubectl taint. For example,kubectl taint nodes node1 key1=value1:NoSchedule places a taint on node node1. The taint has key key1, value value1, and taint effect NoSchedule. This means that no pod will be able to schedule onto node1 unless it has a matching toleration.To remove the taint added by the command above, you can run:kubectl taint nodes node1 key1=value1:NoSchedule- You specify a toleration for a pod in the PodSpec. Both of the following tolerations "match" the taint created by the kubectl taint line above, and thus a pod with either toleration would be able to schedule onto node1:tolerations: - key: "key1" operator: "Equal" value: "value1" effect: "NoSchedule" tolerations: - key: "key1" operator: "Exists" effect: "NoSchedule" The default Kubernetes scheduler takes taints and tolerations into account when selecting a node to run a particular Pod. However, if you manually specify the .spec.nodeName for a Pod, that action bypasses the scheduler; the Pod is then bound onto the node where you assigned it, even if there are NoSchedule taints on that node that you selected. If this happens and the node also has a NoExecute taint set, the kubelet will eject the Pod unless there is an appropriate tolerance set.Here's an example of a pod that has some tolerations defined:pods/pod-with-toleration.yaml apiVersion: v1 kind: Pod metadata: name: nginx labels: env: test spec: containers: - name: nginx image: nginx imagePullPolicy: IfNotPresent tolerations: - key: "example-key" operator: "Exists" effect: "NoSchedule" The default value for operator is Equal.A toleration "matches" a taint if the keys are the same and the effects are the same, and:the operator is Exists (in which case no value should be specified), orthe operator is Equal and the values should be equal.Note:There are two special cases:If the key is empty, then the operator must be Exists, which matches all keys and values. Note that the effect still needs to be matched at the same time.An empty effect matches all effects with key key1.The above example used the effect of NoSchedule. Alternatively, you can use the effect of PreferNoSchedule.The allowed values for the effect field are:NoExecuteThis affects pods that are already running on the node as follows:Pods that do not tolerate the tain


Question: What is Taints and Tolerations?

Answer: N o d e   a f f i n i t y   i s   a   p r o p e r t y   o f   P o d s   t h a t   a t t r a c t s   t h e m   t o   a   s e t   o f   n o d e s   ( e i t h e r   a s   a   p r e f e r e n c e   o r   a   h a r d   r e q u i r e m e n t ) .   T a i n t s   a r e   t h e   o p p o s i t e   - -   t h e y   a l l o w   a   n o d e   t o   r e p e l   a   s e t   o f   p o d s .   T o l e r a t i o n s   a r e   a p p l i e d   t o   p o d s .   T o l e r a t i o n s   a l l o w   t h e   s c h e d u l e r   t o   s c h e d u l e   p o d s   w i t h   m a t c h i n g   t a i n t s .   T o l e r a t i o n s   a l l o w   s c h e d u l i n g   b u t   d o n ' t   g u a r a n t e e   s c h e d u l i n g :   t h e   s c h e d u l e r   a l s o   e v a l u a t e s   o t h e r   p a r a m e t e r s   a s   p a r t   o f   i t s   f u n c t i o n .   T a i n t s   a n d   t o l e r a t i o n s   w o r k   t o g e t h e r   t o   e n s u r e   t h a t   p o d s   a r e   n o t   s c h e d u l e d   o n t o   i n a p p r o p r i a t e   n o d e s .   O n e   o r   m o r e   t a i n t s   a r e   a p p l i e d   t o   a   n o d e ;   t h i s   m a r k s   t h a t   t h e   n o d e   s h o u l d   n o t   a c c e p t   a n y   p o d s   t h a t   d o   n o t   t o l e r a t e   t h e   t a i n t s .


Question: What is Concepts?

Answer: Y o u   a d d   a   t a i n t   t o   a   n o d e   u s i n g   k u b e c t l   t a i n t .   F o r   e x a m p l e ,   k u b e c t l   t a i n t   n o d e s   n o d e 1   k e y 1 = v a l u e 1 : N o S c h e d u l e   p l a c e s   a   t a i n t   o n   n o d e   n o d e 1 .   T h e   t a i n t   h a s   k e y   k e y 1 ,   v a l u e   v a l u e 1 ,   a n d   t a i n t   e f f e c t   N o S c h e d u l e .   T h i s   m e a n s   t h a t   n o   p o d   w i l l   b e   a b l e   t o   s c h e d u l e   o n t o   n o d e 1   u n l e s s   i t   h a s   a   m a t c h i n g   t o l e r a t i o n .   T o   r e m o v e   t h e   t a i n t   a d d e d   b y   t h e   c o m m a n d   a b o v e ,   y o u   c a n   r u n :   k u b e c t l   t a i n t   n o d e s   n o d e 1   k e y 1 = v a l u e 1 : N o S c h e d u l e -   Y o u   s p e c i f y   a   t o l e r a t i o n   f o r   a   p o d   i n   t h e   P o d S p e c .   B o t h   o f   t h e   f o l l o w i n g   t o l e r a t i o n s   " m a t c h "   t h e   t a i n t   c r e a t e d   b y   t h e   k u b e c t l   t a i n t   l i n e   a b o v e ,   a n d   t h u s   a   p o d   w i t h   e i t h e r   t o l e r a t i o n   w o u l d   b e   a b l e   t o   s c h e d u l e   o n t o   n o d e 1 :   t o l e r a t i o n s :   -   k e y :   " k e y 1 "   o p e r a t o r :   " E q u a l "   v a l u e :   " v a l u e 1 "   e f f e c t :   " N o S c h e d u l e "   t o l e r a t i o n s :   -   k e y :   " k e y 1 "   o p e r a t o r :   " E x i s t s "   e f f e c t :   " N o S c h e d u l e "   T h e   d e f a u l t   K u b e r n e t e s   s c h e d u l e r   t a k e s   t a i n t s   a n d   t o l e r a t i o n s   i n t o   a c c o u n t   w h e n   s e l e c t i n g   a   n o d e   t o   r u n   a   p a r t i c u l a r   P o d .   H o w e v e r ,   i f   y o u   m a n u a l l y   s p e c i f y   t h e   . s p e c . n o d e N a m e   f o r   a   P o d ,   t h a t   a c t i o n   b y p a s s e s   t h e   s c h e d u l e


Question: What is Note:?

Answer: T h e r e   a r e   t w o   s p e c i a l   c a s e s :   I f   t h e   k e y   i s   e m p t y ,   t h e n   t h e   o p e r a t o r   m u s t   b e   E x i s t s ,   w h i c h   m a t c h e s   a l l   k e y s   a n d   v a l u e s .   N o t e   t h a t   t h e   e f f e c t   s t i l l   n e e d s   t o   b e   m a t c h e d   a t   t h e   s a m e   t i m e .   A n   e m p t y   e f f e c t   m a t c h e s   a l l   e f f e c t s   w i t h   k e y   k e y 1 .   T h e   a b o v e   e x a m p l e   u s e d   t h e   e f f e c t   o f   N o S c h e d u l e .   A l t e r n a t i v e l y ,   y o u   c a n   u s e   t h e   e f f e c t   o f   P r e f e r N o S c h e d u l e .   T h e   a l l o w e d   v a l u e s   f o r   t h e   e f f e c t   f i e l d   a r e :   P o d s   t h a t   d o   n o t   t o l e r a t e   t h e   t a i n t   a r e   e v i c t e d   i m m e d i a t e l y P o d s   t h a t   t o l e r a t e   t h e   t a i n t   w i t h o u t   s p e c i f y i n g   t o l e r a t i o n S e c o n d s   i n   t h e i r   t o l e r a t i o n   s p e c i f i c a t i o n   r e m a i n   b o u n d   f o r e v e r P o d s   t h a t   t o l e r a t e   t h e   t a i n t   w i t h   a   s p e c i f i e d   t o l e r a t i o n S e c o n d s   r e m a i n   b o u n d   f o r   t h e   s p e c i f i e d   a m o u n t   o f   t i m e .   A f t e r   t h a t   t i m e   e l a p s e s ,   t h e   n o d e   l i f e c y c l e   c o n t r o l l e r   e v i c t s   t h e   P o d s   f r o m   t h e   n o d e .   Y o u   c a n   p u t   m u l t i p l e   t a i n t s   o n   t h e   s a m e   n o d e   a n d   m u l t i p l e   t o l e r a t i o n s   o n   t h e   s a m e   p o d .   T h e   w a y   K u b e r n e t e s   p r o c e s s e s   m u l t i p l e   t a i n t s   a n d   t o l e r a t i o n s   i s   l i k e   a   f i l t e r :   s t a r t   w i t h   a l l   o f   a   n o d e ' s   t a i n t s ,   t h e n   i g n o r e   t h e   o n e s   f o r   w h i c h   t h e


Question: What is Example Use Cases?

Answer: T a i n t s   a n d   t o l e r a t i o n s   a r e   a   f l e x i b l e   w a y   t o   s t e e r   p o d s   a w a y   f r o m   n o d e s   o r   e v i c t   p o d s   t h a t   s h o u l d n ' t   b e   r u n n i n g .   A   f e w   o f   t h e   u s e   c a s e s   a r e   D e d i c a t e d   N o d e s :   I f   y o u   w a n t   t o   d e d i c a t e   a   s e t   o f   n o d e s   f o r   e x c l u s i v e   u s e   b y   a   p a r t i c u l a r   s e t   o f   u s e r s ,   y o u   c a n   a d d   a   t a i n t   t o   t h o s e   n o d e s   ( s a y ,   k u b e c t l   t a i n t   n o d e s   n o d e n a m e   d e d i c a t e d = g r o u p N a m e : N o S c h e d u l e )   a n d   t h e n   a d d   a   c o r r e s p o n d i n g   t o l e r a t i o n   t o   t h e i r   p o d s   ( t h i s   w o u l d   b e   d o n e   m o s t   e a s i l y   b y   w r i t i n g   a   c u s t o m   a d m i s s i o n   c o n t r o l l e r ) .   T h e   p o d s   w i t h   t h e   t o l e r a t i o n s   w i l l   t h e n   b e   a l l o w e d   t o   u s e   t h e   t a i n t e d   ( d e d i c a t e d )   n o d e s   a s   w e l l   a s   a n y   o t h e r   n o d e s   i n   t h e   c l u s t e r .   I f   y o u   w a n t   t o   d e d i c a t e   t h e   n o d e s   t o   t h e m   a n d   e n s u r e   t h e y   o n l y   u s e   t h e   d e d i c a t e d   n o d e s ,   t h e n   y o u   s h o u l d   a d d i t i o n a l l y   a d d   a   l a b e l   s i m i l a r   t o   t h e   t a i n t   t o   t h e   s a m e   s e t   o f   n o d e s   ( e . g .   d e d i c a t e d = g r o u p N a m e ) ,   a n d   t h e   a d m i s s i o n   c o n t r o l l e r   s h o u l d   a d d i t i o n a l l y   a d d   a   n o d e   a f f i n i t y   t o   r e q u i r e   t h a t   t h e   p o d s   c a n   o n l y   s c h e d u l e   o n t o   n o d e s   l a b e l e d   w i t h   d e d i c a t e d = g r o u p N a m e . N o d e s   w i t h   S p e c i a l   H a r d w a r e :   I n   a   c


Question: What is Taint based Evictions?

Answer: T h e   n o d e   c o n t r o l l e r   a u t o m a t i c a l l y   t a i n t s   a   N o d e   w h e n   c e r t a i n   c o n d i t i o n s   a r e   t r u e .   T h e   f o l l o w i n g   t a i n t s   a r e   b u i l t   i n :   n o d e . k u b e r n e t e s . i o / n o t - r e a d y :   N o d e   i s   n o t   r e a d y .   T h i s   c o r r e s p o n d s   t o   t h e   N o d e C o n d i t i o n   R e a d y   b e i n g   " F a l s e " . n o d e . k u b e r n e t e s . i o / u n r e a c h a b l e :   N o d e   i s   u n r e a c h a b l e   f r o m   t h e   n o d e   c o n t r o l l e r .   T h i s   c o r r e s p o n d s   t o   t h e   N o d e C o n d i t i o n   R e a d y   b e i n g   " U n k n o w n " . n o d e . k u b e r n e t e s . i o / m e m o r y - p r e s s u r e :   N o d e   h a s   m e m o r y   p r e s s u r e . n o d e . k u b e r n e t e s . i o / d i s k - p r e s s u r e :   N o d e   h a s   d i s k   p r e s s u r e . n o d e . k u b e r n e t e s . i o / p i d - p r e s s u r e :   N o d e   h a s   P I D   p r e s s u r e . n o d e . k u b e r n e t e s . i o / n e t w o r k - u n a v a i l a b l e :   N o d e ' s   n e t w o r k   i s   u n a v a i l a b l e . n o d e . k u b e r n e t e s . i o / u n s c h e d u l a b l e :   N o d e   i s   u n s c h e d u l a b l e . n o d e . c l o u d p r o v i d e r . k u b e r n e t e s . i o / u n i n i t i a l i z e d :   W h e n   t h e   k u b e l e t   i s   s t a r t e d   w i t h   a n   " e x t e r n a l "   c l o u d   p r o v i d e r ,   t h i s   t a i n t   i s   s e t   o n   a   n o d e   t o   m a r k   i t   a s   u n u s a b l e .   A f t e r   a   c o n t r o l l e r   f r o m   t h e   c l o u d - c o n t r o l l e r - m a n a g e r   i n i t i a l i z e s   t h i s   n o d e ,   t h e   k u b e l e t   r e m o v e s   t h i s   t a i n t .   I n   c a s e   a   n o d e   i s   t o   b e   d r a i n e d ,   t h e   n o d e   c o n t r o l l e r   o r   t h e   k u b e l e t


Question: What is Note:?

Answer: Y o u   c a n   s p e c i f y   t o l e r a t i o n S e c o n d s   f o r   a   P o d   t o   d e f i n e   h o w   l o n g   t h a t   P o d   s t a y s   b o u n d   t o   a   f a i l i n g   o r   u n r e s p o n s i v e   N o d e .   F o r   e x a m p l e ,   y o u   m i g h t   w a n t   t o   k e e p   a n   a p p l i c a t i o n   w i t h   a   l o t   o f   l o c a l   s t a t e   b o u n d   t o   n o d e   f o r   a   l o n g   t i m e   i n   t h e   e v e n t   o f   n e t w o r k   p a r t i t i o n ,   h o p i n g   t h a t   t h e   p a r t i t i o n   w i l l   r e c o v e r   a n d   t h u s   t h e   p o d   e v i c t i o n   c a n   b e   a v o i d e d .   T h e   t o l e r a t i o n   y o u   s e t   f o r   t h a t   P o d   m i g h t   l o o k   l i k e :   t o l e r a t i o n s :   -   k e y :   " n o d e . k u b e r n e t e s . i o / u n r e a c h a b l e "   o p e r a t o r :   " E x i s t s "   e f f e c t :   " N o E x e c u t e "   t o l e r a t i o n S e c o n d s :   6 0 0 0


Question: What is Note:?

Answer: K u b e r n e t e s   a u t o m a t i c a l l y   a d d s   a   t o l e r a t i o n   f o r   n o d e . k u b e r n e t e s . i o / n o t - r e a d y   a n d   n o d e . k u b e r n e t e s . i o / u n r e a c h a b l e   w i t h   t o l e r a t i o n S e c o n d s = 3 0 0 ,   u n l e s s   y o u ,   o r   a   c o n t r o l l e r ,   s e t   t h o s e   t o l e r a t i o n s   e x p l i c i t l y .   T h e s e   a u t o m a t i c a l l y - a d d e d   t o l e r a t i o n s   m e a n   t h a t   P o d s   r e m a i n   b o u n d   t o   N o d e s   f o r   5   m i n u t e s   a f t e r   o n e   o f   t h e s e   p r o b l e m s   i s   d e t e c t e d .   D a e m o n S e t   p o d s   a r e   c r e a t e d   w i t h   N o E x e c u t e   t o l e r a t i o n s   f o r   t h e   f o l l o w i n g   t a i n t s   w i t h   n o   t o l e r a t i o n S e c o n d s :   n o d e . k u b e r n e t e s . i o / u n r e a c h a b l e n o d e . k u b e r n e t e s . i o / n o t - r e a d y   T h i s   e n s u r e s   t h a t   D a e m o n S e t   p o d s   a r e   n e v e r   e v i c t e d   d u e   t o   t h e s e   p r o b l e m s .


Question: What is Taint Nodes by Condition?

Answer: T h e   c o n t r o l   p l a n e ,   u s i n g   t h e   n o d e   c o n t r o l l e r ,   a u t o m a t i c a l l y   c r e a t e s   t a i n t s   w i t h   a   N o S c h e d u l e   e f f e c t   f o r   n o d e   c o n d i t i o n s .   T h e   s c h e d u l e r   c h e c k s   t a i n t s ,   n o t   n o d e   c o n d i t i o n s ,   w h e n   i t   m a k e s   s c h e d u l i n g   d e c i s i o n s .   T h i s   e n s u r e s   t h a t   n o d e   c o n d i t i o n s   d o n ' t   d i r e c t l y   a f f e c t   s c h e d u l i n g .   F o r   e x a m p l e ,   i f   t h e   D i s k P r e s s u r e   n o d e   c o n d i t i o n   i s   a c t i v e ,   t h e   c o n t r o l   p l a n e   a d d s   t h e   n o d e . k u b e r n e t e s . i o / d i s k - p r e s s u r e   t a i n t   a n d   d o e s   n o t   s c h e d u l e   n e w   p o d s   o n t o   t h e   a f f e c t e d   n o d e .   I f   t h e   M e m o r y P r e s s u r e   n o d e   c o n d i t i o n   i s   a c t i v e ,   t h e   c o n t r o l   p l a n e   a d d s   t h e   n o d e . k u b e r n e t e s . i o / m e m o r y - p r e s s u r e   t a i n t .   Y o u   c a n   i g n o r e   n o d e   c o n d i t i o n s   f o r   n e w l y   c r e a t e d   p o d s   b y   a d d i n g   t h e   c o r r e s p o n d i n g   P o d   t o l e r a t i o n s .   T h e   c o n t r o l   p l a n e   a l s o   a d d s   t h e   n o d e . k u b e r n e t e s . i o / m e m o r y - p r e s s u r e   t o l e r a t i o n   o n   p o d s   t h a t   h a v e   a   Q o S   c l a s s   o t h e r   t h a n   B e s t E f f o r t .   T h i s   i s   b e c a u s e   K u b e r n e t e s   t r e a t s   p o d s   i n   t h e   G u a r a n t e e d   o r   B u r s t a b l e   Q o S   c l a s s e s   ( e v e n   p o d s   w i t h   n o   m e m o r y   r e q u e s t   s e t )   a s   i f   t h e y   a r e   a b l e   t o   c o p e   w i t h   m e m o r y   p r e s s u r e ,   w h i l e   n e w   B e s t E f f o r t   p o d s   a


Question: What is Device taints and tolerations?

Answer: I n s t e a d   o f   t a i n t i n g   e n t i r e   n o d e s ,   a d m i n i s t r a t o r s   c a n   a l s o   t a i n t   i n d i v i d u a l   d e v i c e s   w h e n   t h e   c l u s t e r   u s e s   d y n a m i c   r e s o u r c e   a l l o c a t i o n   t o   m a n a g e   s p e c i a l   h a r d w a r e .   T h e   a d v a n t a g e   i s   t h a t   t a i n t i n g   c a n   b e   t a r g e t e d   t o w a r d s   e x a c t l y   t h e   h a r d w a r e   t h a t   i s   f a u l t y   o r   n e e d s   m a i n t e n a n c e .   T o l e r a t i o n s   a r e   a l s o   s u p p o r t e d   a n d   c a n   b e   s p e c i f i e d   w h e n   r e q u e s t i n g   d e v i c e s .   L i k e   t a i n t s   t h e y   a p p l y   t o   a l l   p o d s   w h i c h   s h a r e   t h e   s a m e   a l l o c a t e d   d e v i c e .


Question: What is What's next?

Answer: R e a d   a b o u t   N o d e - p r e s s u r e   E v i c t i o n   a n d   h o w   y o u   c a n   c o n f i g u r e   i t R e a d   a b o u t   P o d   P r i o r i t y R e a d   a b o u t   d e v i c e   t a i n t s   a n d   t o l e r a t i o n s


Question: What is kubectl port-forward?

Answer: kubectl port-forwardSynopsisForward one or more local ports to a pod.Use resource type/name such as deployment/mydeployment to select a pod. Resource type defaults to 'pod' if omitted.If there are multiple pods matching the criteria, a pod will be selected automatically. The forwarding session ends when the selected pod terminates, and a rerun of the command is needed to resume forwarding.kubectl port-forward TYPE/NAME [options] [LOCAL_PORT:]REMOTE_PORT [...[LOCAL_PORT_N:]REMOTE_PORT_N] Examples # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in the pod kubectl port-forward pod/mypod 5000 6000 # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in a pod selected by the deployment kubectl port-forward deployment/mydeployment 5000 6000 # Listen on port 8443 locally, forwarding to the targetPort of the service's port named "https" in a pod selected by the service kubectl port-forward service/myservice 8443:https # Listen on port 8888 locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod 8888:5000 # Listen on port 8888 on all addresses, forwarding to 5000 in the pod kubectl port-forward --address 0.0.0.0 pod/mypod 8888:5000 # Listen on port 8888 on localhost and selected IP, forwarding to 5000 in the pod kubectl port-forward --address localhost,10.19.21.23 pod/mypod 8888:5000 # Listen on a random port locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod :5000 Options--address strings Default: "localhost"Addresses to listen on (comma separated). Only accepts IP addresses or localhost as a value. When localhost is supplied, kubectl will try to bind on both 127.0.0.1 and ::1 and will fail if neither of these addresses are available to bind.-h, --helphelp for port-forward--pod-running-timeout duration Default: 1m0sThe length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one pod is runningParent Options Inherited--as stringUsername to impersonate for the operation. User could be a regular user or a service account in a namespace.--as-group stringsGroup to impersonate for the operation, this flag can be repeated to specify multiple groups.--as-uid stringUID to impersonate for the operation.--cache-dir string Default: "$HOME/.kube/cache"Default cache directory--certificate-authority stringPath to a cert file for the certificate authority--client-certificate stringPath to a client certificate file for TLS--client-key stringPath to a client key file for TLS--cluster stringThe name of the kubeconfig cluster to use--context stringThe name of the kubeconfig context to use--disable-compressionIf true, opt-out of response compression for all requests to the server--insecure-skip-tls-verifyIf true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure--kubeconfig stringPath to the kubeconfig file to use for CLI requests.--kuberc stringPath to the kuberc file to use for preferences. This ca


Question: How does kubectl port-forward work?

Answer: kubectl port-forwardSynopsisForward one or more local ports to a pod.Use resource type/name such as deployment/mydeployment to select a pod. Resource type defaults to 'pod' if omitted.If there are multiple pods matching the criteria, a pod will be selected automatically. The forwarding session ends when the selected pod terminates, and a rerun of the command is needed to resume forwarding.kubectl port-forward TYPE/NAME [options] [LOCAL_PORT:]REMOTE_PORT [...[LOCAL_PORT_N:]REMOTE_PORT_N] Examples # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in the pod kubectl port-forward pod/mypod 5000 6000 # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in a pod selected by the deployment kubectl port-forward deployment/mydeployment 5000 6000 # Listen on port 8443 locally, forwarding to the targetPort of the service's port named "https" in a pod selected by the service kubectl port-forward service/myservice 8443:https # Listen on port 8888 locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod 8888:5000 # Listen on port 8888 on all addresses, forwarding to 5000 in the pod kubectl port-forward --address 0.0.0.0 pod/mypod 8888:5000 # Listen on port 8888 on localhost and selected IP, forwarding to 5000 in the pod kubectl port-forward --address localhost,10.19.21.23 pod/mypod 8888:5000 # Listen on a random port locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod :5000 Options--address strings Default: "localhost"Addresses to listen on (comma separated). Only accepts IP addresses or localhost as a value. When localhost is supplied, kubectl will try to bind on both 127.0.0.1 and ::1 and will fail if neither of these addresses are available to bind.-h, --helphelp for port-forward--pod-running-timeout duration Default: 1m0sThe length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one pod is runningParent Options Inherited--as stringUsername to impersonate for the operation. User could be a regular user or a service account in a namespace.--as-group stringsGroup to impersonate for the operation, this flag can be repeated to specify multiple groups.--as-uid stringUID to impersonate for the operation.--cache-dir string Default: "$HOME/.kube/cache"Default cache directory--certificate-authority stringPath to a cert file for the certificate authority--client-certificate stringPath to a client certificate file for TLS--client-key stringPath to a client key file for TLS--cluster stringThe name of the kubeconfig cluster to use--context stringThe name of the kubeconfig context to use--disable-compressionIf true, opt-out of response compression for all requests to the server--insecure-skip-tls-verifyIf true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure--kubeconfig stringPath to the kubeconfig file to use for CLI requests.--kuberc stringPath to the kuberc file to use for preferences. This ca


Question: When would you use kubectl port-forward?

Answer: kubectl port-forwardSynopsisForward one or more local ports to a pod.Use resource type/name such as deployment/mydeployment to select a pod. Resource type defaults to 'pod' if omitted.If there are multiple pods matching the criteria, a pod will be selected automatically. The forwarding session ends when the selected pod terminates, and a rerun of the command is needed to resume forwarding.kubectl port-forward TYPE/NAME [options] [LOCAL_PORT:]REMOTE_PORT [...[LOCAL_PORT_N:]REMOTE_PORT_N] Examples # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in the pod kubectl port-forward pod/mypod 5000 6000 # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in a pod selected by the deployment kubectl port-forward deployment/mydeployment 5000 6000 # Listen on port 8443 locally, forwarding to the targetPort of the service's port named "https" in a pod selected by the service kubectl port-forward service/myservice 8443:https # Listen on port 8888 locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod 8888:5000 # Listen on port 8888 on all addresses, forwarding to 5000 in the pod kubectl port-forward --address 0.0.0.0 pod/mypod 8888:5000 # Listen on port 8888 on localhost and selected IP, forwarding to 5000 in the pod kubectl port-forward --address localhost,10.19.21.23 pod/mypod 8888:5000 # Listen on a random port locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod :5000 Options--address strings Default: "localhost"Addresses to listen on (comma separated). Only accepts IP addresses or localhost as a value. When localhost is supplied, kubectl will try to bind on both 127.0.0.1 and ::1 and will fail if neither of these addresses are available to bind.-h, --helphelp for port-forward--pod-running-timeout duration Default: 1m0sThe length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one pod is runningParent Options Inherited--as stringUsername to impersonate for the operation. User could be a regular user or a service account in a namespace.--as-group stringsGroup to impersonate for the operation, this flag can be repeated to specify multiple groups.--as-uid stringUID to impersonate for the operation.--cache-dir string Default: "$HOME/.kube/cache"Default cache directory--certificate-authority stringPath to a cert file for the certificate authority--client-certificate stringPath to a client certificate file for TLS--client-key stringPath to a client key file for TLS--cluster stringThe name of the kubeconfig cluster to use--context stringThe name of the kubeconfig context to use--disable-compressionIf true, opt-out of response compression for all requests to the server--insecure-skip-tls-verifyIf true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure--kubeconfig stringPath to the kubeconfig file to use for CLI requests.--kuberc stringPath to the kuberc file to use for preferences. This ca


Question: What are the benefits of kubectl port-forward?

Answer: kubectl port-forwardSynopsisForward one or more local ports to a pod.Use resource type/name such as deployment/mydeployment to select a pod. Resource type defaults to 'pod' if omitted.If there are multiple pods matching the criteria, a pod will be selected automatically. The forwarding session ends when the selected pod terminates, and a rerun of the command is needed to resume forwarding.kubectl port-forward TYPE/NAME [options] [LOCAL_PORT:]REMOTE_PORT [...[LOCAL_PORT_N:]REMOTE_PORT_N] Examples # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in the pod kubectl port-forward pod/mypod 5000 6000 # Listen on ports 5000 and 6000 locally, forwarding data to/from ports 5000 and 6000 in a pod selected by the deployment kubectl port-forward deployment/mydeployment 5000 6000 # Listen on port 8443 locally, forwarding to the targetPort of the service's port named "https" in a pod selected by the service kubectl port-forward service/myservice 8443:https # Listen on port 8888 locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod 8888:5000 # Listen on port 8888 on all addresses, forwarding to 5000 in the pod kubectl port-forward --address 0.0.0.0 pod/mypod 8888:5000 # Listen on port 8888 on localhost and selected IP, forwarding to 5000 in the pod kubectl port-forward --address localhost,10.19.21.23 pod/mypod 8888:5000 # Listen on a random port locally, forwarding to 5000 in the pod kubectl port-forward pod/mypod :5000 Options--address strings Default: "localhost"Addresses to listen on (comma separated). Only accepts IP addresses or localhost as a value. When localhost is supplied, kubectl will try to bind on both 127.0.0.1 and ::1 and will fail if neither of these addresses are available to bind.-h, --helphelp for port-forward--pod-running-timeout duration Default: 1m0sThe length of time (like 5s, 2m, or 3h, higher than zero) to wait until at least one pod is runningParent Options Inherited--as stringUsername to impersonate for the operation. User could be a regular user or a service account in a namespace.--as-group stringsGroup to impersonate for the operation, this flag can be repeated to specify multiple groups.--as-uid stringUID to impersonate for the operation.--cache-dir string Default: "$HOME/.kube/cache"Default cache directory--certificate-authority stringPath to a cert file for the certificate authority--client-certificate stringPath to a client certificate file for TLS--client-key stringPath to a client key file for TLS--cluster stringThe name of the kubeconfig cluster to use--context stringThe name of the kubeconfig context to use--disable-compressionIf true, opt-out of response compression for all requests to the server--insecure-skip-tls-verifyIf true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure--kubeconfig stringPath to the kubeconfig file to use for CLI requests.--kuberc stringPath to the kuberc file to use for preferences. This ca


Question: What is Synopsis?

Answer: F o r w a r d   o n e   o r   m o r e   l o c a l   p o r t s   t o   a   p o d .   U s e   r e s o u r c e   t y p e / n a m e   s u c h   a s   d e p l o y m e n t / m y d e p l o y m e n t   t o   s e l e c t   a   p o d .   R e s o u r c e   t y p e   d e f a u l t s   t o   ' p o d '   i f   o m i t t e d .   I f   t h e r e   a r e   m u l t i p l e   p o d s   m a t c h i n g   t h e   c r i t e r i a ,   a   p o d   w i l l   b e   s e l e c t e d   a u t o m a t i c a l l y .   T h e   f o r w a r d i n g   s e s s i o n   e n d s   w h e n   t h e   s e l e c t e d   p o d   t e r m i n a t e s ,   a n d   a   r e r u n   o f   t h e   c o m m a n d   i s   n e e d e d   t o   r e s u m e   f o r w a r d i n g .   k u b e c t l   p o r t - f o r w a r d   T Y P E / N A M E   [ o p t i o n s ]   [ L O C A L _ P O R T : ] R E M O T E _ P O R T   [ . . . [ L O C A L _ P O R T _ N : ] R E M O T E _ P O R T _ N ]


Question: What is Examples?

Answer: #   L i s t e n   o n   p o r t s   5 0 0 0   a n d   6 0 0 0   l o c a l l y ,   f o r w a r d i n g   d a t a   t o / f r o m   p o r t s   5 0 0 0   a n d   6 0 0 0   i n   t h e   p o d   k u b e c t l   p o r t - f o r w a r d   p o d / m y p o d   5 0 0 0   6 0 0 0   #   L i s t e n   o n   p o r t s   5 0 0 0   a n d   6 0 0 0   l o c a l l y ,   f o r w a r d i n g   d a t a   t o / f r o m   p o r t s   5 0 0 0   a n d   6 0 0 0   i n   a   p o d   s e l e c t e d   b y   t h e   d e p l o y m e n t   k u b e c t l   p o r t - f o r w a r d   d e p l o y m e n t / m y d e p l o y m e n t   5 0 0 0   6 0 0 0   #   L i s t e n   o n   p o r t   8 4 4 3   l o c a l l y ,   f o r w a r d i n g   t o   t h e   t a r g e t P o r t   o f   t h e   s e r v i c e ' s   p o r t   n a m e d   " h t t p s "   i n   a   p o d   s e l e c t e d   b y   t h e   s e r v i c e   k u b e c t l   p o r t - f o r w a r d   s e r v i c e / m y s e r v i c e   8 4 4 3 : h t t p s   #   L i s t e n   o n   p o r t   8 8 8 8   l o c a l l y ,   f o r w a r d i n g   t o   5 0 0 0   i n   t h e   p o d   k u b e c t l   p o r t - f o r w a r d   p o d / m y p o d   8 8 8 8 : 5 0 0 0   #   L i s t e n   o n   p o r t   8 8 8 8   o n   a l l   a d d r e s s e s ,   f o r w a r d i n g   t o   5 0 0 0   i n   t h e   p o d   k u b e c t l   p o r t - f o r w a r d   - - a d d r e s s   0 . 0 . 0 . 0   p o d / m y p o d   8 8 8 8 : 5 0 0 0   #   L i s t e n   o n   p o r t   8 8 8 8   o n   l o c a l h o s t   a n d   s e l e c t e d   I P ,   f o r w a r d i n g   t o   5 0 0 0   i n   t h e   p o d   k u b e c t l   p o r t - f o r w a r d   - - a d d r e s s   l o c a l h o s t , 1 0 . 1 9 . 2 1 . 2 3   p o d / m y p o d   8 8 8 8 : 5 0 0 0   #   L i s t e n   o n   a   r a n d o m   p o r t   l o c a l l y ,   f o r w a r d i n g   t o   5 0 0 0   i n   t h e   p o d   k u b e c t l   p o r t - f o r w a r d   p o d / m y p o d   : 5 0 0 0


Question: What is Options?

Answer: A d d r e s s e s   t o   l i s t e n   o n   ( c o m m a   s e p a r a t e d ) .   O n l y   a c c e p t s   I P   a d d r e s s e s   o r   l o c a l h o s t   a s   a   v a l u e .   W h e n   l o c a l h o s t   i s   s u p p l i e d ,   k u b e c t l   w i l l   t r y   t o   b i n d   o n   b o t h   1 2 7 . 0 . 0 . 1   a n d   : : 1   a n d   w i l l   f a i l   i f   n e i t h e r   o f   t h e s e   a d d r e s s e s   a r e   a v a i l a b l e   t o   b i n d .   h e l p   f o r   p o r t - f o r w a r d   T h e   l e n g t h   o f   t i m e   ( l i k e   5 s ,   2 m ,   o r   3 h ,   h i g h e r   t h a n   z e r o )   t o   w a i t   u n t i l   a t   l e a s t   o n e   p o d   i s   r u n n i n g


Question: What is Parent Options Inherited?

Answer: U s e r n a m e   t o   i m p e r s o n a t e   f o r   t h e   o p e r a t i o n .   U s e r   c o u l d   b e   a   r e g u l a r   u s e r   o r   a   s e r v i c e   a c c o u n t   i n   a   n a m e s p a c e .   G r o u p   t o   i m p e r s o n a t e   f o r   t h e   o p e r a t i o n ,   t h i s   f l a g   c a n   b e   r e p e a t e d   t o   s p e c i f y   m u l t i p l e   g r o u p s .   U I D   t o   i m p e r s o n a t e   f o r   t h e   o p e r a t i o n .   D e f a u l t   c a c h e   d i r e c t o r y   P a t h   t o   a   c e r t   f i l e   f o r   t h e   c e r t i f i c a t e   a u t h o r i t y   P a t h   t o   a   c l i e n t   c e r t i f i c a t e   f i l e   f o r   T L S   P a t h   t o   a   c l i e n t   k e y   f i l e   f o r   T L S   T h e   n a m e   o f   t h e   k u b e c o n f i g   c l u s t e r   t o   u s e   T h e   n a m e   o f   t h e   k u b e c o n f i g   c o n t e x t   t o   u s e   I f   t r u e ,   o p t - o u t   o f   r e s p o n s e   c o m p r e s s i o n   f o r   a l l   r e q u e s t s   t o   t h e   s e r v e r   I f   t r u e ,   t h e   s e r v e r ' s   c e r t i f i c a t e   w i l l   n o t   b e   c h e c k e d   f o r   v a l i d i t y .   T h i s   w i l l   m a k e   y o u r   H T T P S   c o n n e c t i o n s   i n s e c u r e   P a t h   t o   t h e   k u b e c o n f i g   f i l e   t o   u s e   f o r   C L I   r e q u e s t s .   P a t h   t o   t h e   k u b e r c   f i l e   t o   u s e   f o r   p r e f e r e n c e s .   T h i s   c a n   b e   d i s a b l e d   b y   e x p o r t i n g   K U B E C T L _ K U B E R C = f a l s e   f e a t u r e   g a t e   o r   t u r n i n g   o f f   t h e   f e a t u r e   K U B E R C = o f f .   R e q u i r e   s e r v e r   v e r s i o n   t o   m a t c h   c l i e n t   v e r s i o n   I f   p r e s e n t ,   t h e   n a m e s p a c e   s c o p e   f o r   t h i s   C L I   r e q u e s t   P a s s w o r d   f o r   b a s i c   a u t h e n t i c a t


Question: What is See Also?

Answer: k u b e c t l   -   k u b e c t l   c o n t r o l s   t h e   K u b e r n e t e s   c l u s t e r   m a n a g e r   T h i s   p a g e   i s   a u t o m a t i c a l l y   g e n e r a t e d .   I f   y o u   p l a n   t o   r e p o r t   a n   i s s u e   w i t h   t h i s   p a g e ,   m e n t i o n   t h a t   t h e   p a g e   i s   a u t o - g e n e r a t e d   i n   y o u r   i s s u e   d e s c r i p t i o n .   T h e   f i x   m a y   n e e d   t o   h a p p e n   e l s e w h e r e   i n   t h e   K u b e r n e t e s   p r o j e c t .


Question: What is MutatingAdmissionPolicyBinding v1alpha1?

Answer: MutatingAdmissionPolicyBinding v1alpha1MutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources.apiVersion: admissionregistration.k8s.io/v1alpha1import "k8s.io/api/admissionregistration/v1alpha1"MutatingAdmissionPolicyBindingMutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources. MutatingAdmissionPolicyBinding and the optional parameter resource together define how cluster administrators configure policies for clusters.For a given admission request, each binding will cause its policy to be evaluated N times, where N is 1 for policies/bindings that don't use params, otherwise N is the number of parameters selected by the binding. Each evaluation is constrained by a runtime cost budget.Adding/removing policies, bindings, or params can not affect whether a given (policy, binding, param) combination is within its own CEL budget.apiVersion: admissionregistration.k8s.io/v1alpha1kind: MutatingAdmissionPolicyBindingmetadata (ObjectMeta)Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.spec (MutatingAdmissionPolicyBindingSpec)Specification of the desired behavior of the MutatingAdmissionPolicyBinding.MutatingAdmissionPolicyBindingSpec is the specification of the MutatingAdmissionPolicyBinding.spec.matchResources (MatchResources)matchResources limits what resources match this binding and may be mutated by it. Note that if matchResources matches a resource, the resource must also match a policy's matchConstraints and matchConditions before the resource may be mutated. When matchResources is unset, it does not constrain resource matching, and only the policy's matchConstraints and matchConditions must match for the resource to be mutated. Additionally, matchResources.resourceRules are optional and do not constraint matching when unset. Note that this is differs from MutatingAdmissionPolicy matchConstraints, where resourceRules are required. The CREATE, UPDATE and CONNECT operations are allowed. The DELETE operation may not be matched. '*' matches CREATE, UPDATE and CONNECT.MatchResources decides whether to run the admission control policy on an object based on whether it meets the match criteria. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)spec.matchResources.excludeResourceRules ([]NamedRuleWithOperations)Atomic: will be replaced during a mergeExcludeResourceRules describes what operations on what resources/subresources the policy should not care about. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.spec.matchResources.excludeResourceRules.apiGroups ([]string)Atomic: will be replaced during a mergeAPIGroups is the API groups the resources belong to. '' is all groups. If '' is present, the length of the slice must be one. Req


Question: How does MutatingAdmissionPolicyBinding v1alpha1 work?

Answer: MutatingAdmissionPolicyBinding v1alpha1MutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources.apiVersion: admissionregistration.k8s.io/v1alpha1import "k8s.io/api/admissionregistration/v1alpha1"MutatingAdmissionPolicyBindingMutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources. MutatingAdmissionPolicyBinding and the optional parameter resource together define how cluster administrators configure policies for clusters.For a given admission request, each binding will cause its policy to be evaluated N times, where N is 1 for policies/bindings that don't use params, otherwise N is the number of parameters selected by the binding. Each evaluation is constrained by a runtime cost budget.Adding/removing policies, bindings, or params can not affect whether a given (policy, binding, param) combination is within its own CEL budget.apiVersion: admissionregistration.k8s.io/v1alpha1kind: MutatingAdmissionPolicyBindingmetadata (ObjectMeta)Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.spec (MutatingAdmissionPolicyBindingSpec)Specification of the desired behavior of the MutatingAdmissionPolicyBinding.MutatingAdmissionPolicyBindingSpec is the specification of the MutatingAdmissionPolicyBinding.spec.matchResources (MatchResources)matchResources limits what resources match this binding and may be mutated by it. Note that if matchResources matches a resource, the resource must also match a policy's matchConstraints and matchConditions before the resource may be mutated. When matchResources is unset, it does not constrain resource matching, and only the policy's matchConstraints and matchConditions must match for the resource to be mutated. Additionally, matchResources.resourceRules are optional and do not constraint matching when unset. Note that this is differs from MutatingAdmissionPolicy matchConstraints, where resourceRules are required. The CREATE, UPDATE and CONNECT operations are allowed. The DELETE operation may not be matched. '*' matches CREATE, UPDATE and CONNECT.MatchResources decides whether to run the admission control policy on an object based on whether it meets the match criteria. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)spec.matchResources.excludeResourceRules ([]NamedRuleWithOperations)Atomic: will be replaced during a mergeExcludeResourceRules describes what operations on what resources/subresources the policy should not care about. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.spec.matchResources.excludeResourceRules.apiGroups ([]string)Atomic: will be replaced during a mergeAPIGroups is the API groups the resources belong to. '' is all groups. If '' is present, the length of the slice must be one. Req


Question: When would you use MutatingAdmissionPolicyBinding v1alpha1?

Answer: MutatingAdmissionPolicyBinding v1alpha1MutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources.apiVersion: admissionregistration.k8s.io/v1alpha1import "k8s.io/api/admissionregistration/v1alpha1"MutatingAdmissionPolicyBindingMutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources. MutatingAdmissionPolicyBinding and the optional parameter resource together define how cluster administrators configure policies for clusters.For a given admission request, each binding will cause its policy to be evaluated N times, where N is 1 for policies/bindings that don't use params, otherwise N is the number of parameters selected by the binding. Each evaluation is constrained by a runtime cost budget.Adding/removing policies, bindings, or params can not affect whether a given (policy, binding, param) combination is within its own CEL budget.apiVersion: admissionregistration.k8s.io/v1alpha1kind: MutatingAdmissionPolicyBindingmetadata (ObjectMeta)Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.spec (MutatingAdmissionPolicyBindingSpec)Specification of the desired behavior of the MutatingAdmissionPolicyBinding.MutatingAdmissionPolicyBindingSpec is the specification of the MutatingAdmissionPolicyBinding.spec.matchResources (MatchResources)matchResources limits what resources match this binding and may be mutated by it. Note that if matchResources matches a resource, the resource must also match a policy's matchConstraints and matchConditions before the resource may be mutated. When matchResources is unset, it does not constrain resource matching, and only the policy's matchConstraints and matchConditions must match for the resource to be mutated. Additionally, matchResources.resourceRules are optional and do not constraint matching when unset. Note that this is differs from MutatingAdmissionPolicy matchConstraints, where resourceRules are required. The CREATE, UPDATE and CONNECT operations are allowed. The DELETE operation may not be matched. '*' matches CREATE, UPDATE and CONNECT.MatchResources decides whether to run the admission control policy on an object based on whether it meets the match criteria. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)spec.matchResources.excludeResourceRules ([]NamedRuleWithOperations)Atomic: will be replaced during a mergeExcludeResourceRules describes what operations on what resources/subresources the policy should not care about. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.spec.matchResources.excludeResourceRules.apiGroups ([]string)Atomic: will be replaced during a mergeAPIGroups is the API groups the resources belong to. '' is all groups. If '' is present, the length of the slice must be one. Req


Question: What are the benefits of MutatingAdmissionPolicyBinding v1alpha1?

Answer: MutatingAdmissionPolicyBinding v1alpha1MutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources.apiVersion: admissionregistration.k8s.io/v1alpha1import "k8s.io/api/admissionregistration/v1alpha1"MutatingAdmissionPolicyBindingMutatingAdmissionPolicyBinding binds the MutatingAdmissionPolicy with parametrized resources. MutatingAdmissionPolicyBinding and the optional parameter resource together define how cluster administrators configure policies for clusters.For a given admission request, each binding will cause its policy to be evaluated N times, where N is 1 for policies/bindings that don't use params, otherwise N is the number of parameters selected by the binding. Each evaluation is constrained by a runtime cost budget.Adding/removing policies, bindings, or params can not affect whether a given (policy, binding, param) combination is within its own CEL budget.apiVersion: admissionregistration.k8s.io/v1alpha1kind: MutatingAdmissionPolicyBindingmetadata (ObjectMeta)Standard object metadata; More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata.spec (MutatingAdmissionPolicyBindingSpec)Specification of the desired behavior of the MutatingAdmissionPolicyBinding.MutatingAdmissionPolicyBindingSpec is the specification of the MutatingAdmissionPolicyBinding.spec.matchResources (MatchResources)matchResources limits what resources match this binding and may be mutated by it. Note that if matchResources matches a resource, the resource must also match a policy's matchConstraints and matchConditions before the resource may be mutated. When matchResources is unset, it does not constrain resource matching, and only the policy's matchConstraints and matchConditions must match for the resource to be mutated. Additionally, matchResources.resourceRules are optional and do not constraint matching when unset. Note that this is differs from MutatingAdmissionPolicy matchConstraints, where resourceRules are required. The CREATE, UPDATE and CONNECT operations are allowed. The DELETE operation may not be matched. '*' matches CREATE, UPDATE and CONNECT.MatchResources decides whether to run the admission control policy on an object based on whether it meets the match criteria. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)spec.matchResources.excludeResourceRules ([]NamedRuleWithOperations)Atomic: will be replaced during a mergeExcludeResourceRules describes what operations on what resources/subresources the policy should not care about. The exclude rules take precedence over include rules (if a resource matches both, it is excluded)NamedRuleWithOperations is a tuple of Operations and Resources with ResourceNames.spec.matchResources.excludeResourceRules.apiGroups ([]string)Atomic: will be replaced during a mergeAPIGroups is the API groups the resources belong to. '' is all groups. If '' is present, the length of the slice must be one. Req


Question: What is MutatingAdmissionPolicyBinding v1alpha1?

Answer: a p i V e r s i o n :   a d m i s s i o n r e g i s t r a t i o n . k 8 s . i o / v 1 a l p h a 1   i m p o r t   " k 8 s . i o / a p i / a d m i s s i o n r e g i s t r a t i o n / v 1 a l p h a 1 "


Question: What is MutatingAdmissionPolicyBinding?

Answer: M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g   b i n d s   t h e   M u t a t i n g A d m i s s i o n P o l i c y   w i t h   p a r a m e t r i z e d   r e s o u r c e s .   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g   a n d   t h e   o p t i o n a l   p a r a m e t e r   r e s o u r c e   t o g e t h e r   d e f i n e   h o w   c l u s t e r   a d m i n i s t r a t o r s   c o n f i g u r e   p o l i c i e s   f o r   c l u s t e r s .   F o r   a   g i v e n   a d m i s s i o n   r e q u e s t ,   e a c h   b i n d i n g   w i l l   c a u s e   i t s   p o l i c y   t o   b e   e v a l u a t e d   N   t i m e s ,   w h e r e   N   i s   1   f o r   p o l i c i e s / b i n d i n g s   t h a t   d o n ' t   u s e   p a r a m s ,   o t h e r w i s e   N   i s   t h e   n u m b e r   o f   p a r a m e t e r s   s e l e c t e d   b y   t h e   b i n d i n g .   E a c h   e v a l u a t i o n   i s   c o n s t r a i n e d   b y   a   r u n t i m e   c o s t   b u d g e t .   A d d i n g / r e m o v i n g   p o l i c i e s ,   b i n d i n g s ,   o r   p a r a m s   c a n   n o t   a f f e c t   w h e t h e r   a   g i v e n   ( p o l i c y ,   b i n d i n g ,   p a r a m )   c o m b i n a t i o n   i s   w i t h i n   i t s   o w n   C E L   b u d g e t .   a p i V e r s i o n :   a d m i s s i o n r e g i s t r a t i o n . k 8 s . i o / v 1 a l p h a 1 k i n d :   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g m e t a d a t a   ( O b j e c t M e t a ) S t a n d a r d   o b j e c t   m e t a d a t a ;   M o r e   i n f o :   h t t p s : / / g i t . k 8 s . i o / c o m m u n i t y / c o n t r i b u t o r s / d e v e l / s i g - a r c h i t e c t u r e / a p i - c o n v e n t i o n s . m d # m e t a d a t a . s p e c   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g S p e c ) S p e c i f i c a t i o n   o f   t h e   d e s i r e d   b e h a v i o r   o f   t h e   M u t a t i n g A d m i s s i o n P o l i c y B i n


Question: What is MutatingAdmissionPolicy?

Answer: M u t a t i n g A d m i s s i o n P o l i c y   d e s c r i b e s   t h e   d e f i n i t i o n   o f   a n   a d m i s s i o n   m u t a t i o n   p o l i c y   t h a t   m u t a t e s   t h e   o b j e c t   c o m i n g   i n t o   a d m i s s i o n   c h a i n .   a p i V e r s i o n   ( s t r i n g ) A P I V e r s i o n   d e f i n e s   t h e   v e r s i o n e d   s c h e m a   o f   t h i s   r e p r e s e n t a t i o n   o f   a n   o b j e c t .   S e r v e r s   s h o u l d   c o n v e r t   r e c o g n i z e d   s c h e m a s   t o   t h e   l a t e s t   i n t e r n a l   v a l u e ,   a n d   m a y   r e j e c t   u n r e c o g n i z e d   v a l u e s .   M o r e   i n f o :   h t t p s : / / g i t . k 8 s . i o / c o m m u n i t y / c o n t r i b u t o r s / d e v e l / s i g - a r c h i t e c t u r e / a p i - c o n v e n t i o n s . m d # r e s o u r c e s k i n d   ( s t r i n g ) K i n d   i s   a   s t r i n g   v a l u e   r e p r e s e n t i n g   t h e   R E S T   r e s o u r c e   t h i s   o b j e c t   r e p r e s e n t s .   S e r v e r s   m a y   i n f e r   t h i s   f r o m   t h e   e n d p o i n t   t h e   c l i e n t   s u b m i t s   r e q u e s t s   t o .   C a n n o t   b e   u p d a t e d .   I n   C a m e l C a s e .   M o r e   i n f o :   h t t p s : / / g i t . k 8 s . i o / c o m m u n i t y / c o n t r i b u t o r s / d e v e l / s i g - a r c h i t e c t u r e / a p i - c o n v e n t i o n s . m d # t y p e s - k i n d s m e t a d a t a   ( O b j e c t M e t a ) S t a n d a r d   o b j e c t   m e t a d a t a ;   M o r e   i n f o :   h t t p s : / / g i t . k 8 s . i o / c o m m u n i t y / c o n t r i b u t o r s / d e v e l / s i g - a r c h i t e c t u r e / a p i - c o n v e n t i o n s . m d # m e t a d a t a . s p e c   ( M u t a t i n g A d m i s s i o n P o l i c y S p e c ) S p e c i f i c a t i o n   o f   t h e   d e s i r e d   b e h a v i o r   o f   t h e   M u t a t i n g A d m i s s i o n P o l i c y . M


Question: What is MutatingAdmissionPolicyBindingList?

Answer: M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g L i s t   i s   a   l i s t   o f   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g .   i t e m s   ( [ ] M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) ,   r e q u i r e d L i s t   o f   P o l i c y B i n d i n g . a p i V e r s i o n   ( s t r i n g ) A P I V e r s i o n   d e f i n e s   t h e   v e r s i o n e d   s c h e m a   o f   t h i s   r e p r e s e n t a t i o n   o f   a n   o b j e c t .   S e r v e r s   s h o u l d   c o n v e r t   r e c o g n i z e d   s c h e m a s   t o   t h e   l a t e s t   i n t e r n a l   v a l u e ,   a n d   m a y   r e j e c t   u n r e c o g n i z e d   v a l u e s .   M o r e   i n f o :   h t t p s : / / g i t . k 8 s . i o / c o m m u n i t y / c o n t r i b u t o r s / d e v e l / s i g - a r c h i t e c t u r e / a p i - c o n v e n t i o n s . m d # r e s o u r c e s k i n d   ( s t r i n g ) K i n d   i s   a   s t r i n g   v a l u e   r e p r e s e n t i n g   t h e   R E S T   r e s o u r c e   t h i s   o b j e c t   r e p r e s e n t s .   S e r v e r s   m a y   i n f e r   t h i s   f r o m   t h e   e n d p o i n t   t h e   c l i e n t   s u b m i t s   r e q u e s t s   t o .   C a n n o t   b e   u p d a t e d .   I n   C a m e l C a s e .   M o r e   i n f o :   h t t p s : / / g i t . k 8 s . i o / c o m m u n i t y / c o n t r i b u t o r s / d e v e l / s i g - a r c h i t e c t u r e / a p i - c o n v e n t i o n s . m d # t y p e s - k i n d s m e t a d a t a   ( L i s t M e t a ) S t a n d a r d   l i s t   m e t a d a t a .   M o r e   i n f o :   h t t p s : / / g i t . k 8 s . i o / c o m m u n i t y / c o n t r i b u t o r s / d e v e l / s i g - a r c h i t e c t u r e / a p i - c o n v e n t i o n s . m d # t y p e s - k i n d s   i t e m s   ( [ ] M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) ,   r e q u i r e d   L i s t   o f   P o l i c y B i n d i n g .   a p i V e r s i o n   ( s


Question: What is HTTP Request?

Answer: G E T   / a p i s / a d m i s s i o n r e g i s t r a t i o n . k 8 s . i o / v 1 a l p h a 1 / m u t a t i n g a d m i s s i o n p o l i c y b i n d i n g s / { n a m e }


Question: What is Parameters?

Answer: n a m e   ( i n   p a t h ) :   s t r i n g ,   r e q u i r e d n a m e   o f   t h e   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g p r e t t y   ( i n   q u e r y ) :   s t r i n g p r e t t y   n a m e   ( i n   p a t h ) :   s t r i n g ,   r e q u i r e d   n a m e   o f   t h e   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g   p r e t t y   ( i n   q u e r y ) :   s t r i n g   p r e t t y


Question: What is Response?

Answer: 2 0 0   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) :   O K   4 0 1 :   U n a u t h o r i z e d


Question: What is HTTP Request?

Answer: G E T   / a p i s / a d m i s s i o n r e g i s t r a t i o n . k 8 s . i o / v 1 a l p h a 1 / m u t a t i n g a d m i s s i o n p o l i c y b i n d i n g s


Question: What is Parameters?

Answer: a l l o w W a t c h B o o k m a r k s   ( i n   q u e r y ) :   b o o l e a n a l l o w W a t c h B o o k m a r k s c o n t i n u e   ( i n   q u e r y ) :   s t r i n g c o n t i n u e f i e l d S e l e c t o r   ( i n   q u e r y ) :   s t r i n g f i e l d S e l e c t o r l a b e l S e l e c t o r   ( i n   q u e r y ) :   s t r i n g l a b e l S e l e c t o r l i m i t   ( i n   q u e r y ) :   i n t e g e r l i m i t p r e t t y   ( i n   q u e r y ) :   s t r i n g p r e t t y r e s o u r c e V e r s i o n   ( i n   q u e r y ) :   s t r i n g r e s o u r c e V e r s i o n r e s o u r c e V e r s i o n M a t c h   ( i n   q u e r y ) :   s t r i n g r e s o u r c e V e r s i o n M a t c h s e n d I n i t i a l E v e n t s   ( i n   q u e r y ) :   b o o l e a n s e n d I n i t i a l E v e n t s t i m e o u t S e c o n d s   ( i n   q u e r y ) :   i n t e g e r t i m e o u t S e c o n d s w a t c h   ( i n   q u e r y ) :   b o o l e a n w a t c h   a l l o w W a t c h B o o k m a r k s   ( i n   q u e r y ) :   b o o l e a n   a l l o w W a t c h B o o k m a r k s   c o n t i n u e   ( i n   q u e r y ) :   s t r i n g   c o n t i n u e   f i e l d S e l e c t o r   ( i n   q u e r y ) :   s t r i n g   f i e l d S e l e c t o r   l a b e l S e l e c t o r   ( i n   q u e r y ) :   s t r i n g   l a b e l S e l e c t o r   l i m i t   ( i n   q u e r y ) :   i n t e g e r   l i m i t   p r e t t y   ( i n   q u e r y ) :   s t r i n g   p r e t t y   r e s o u r c e V e r s i o n   ( i n   q u e r y ) :   s t r i n g   r e s o u r c e V e r s i o n   r e s o u r c e V e r s i o n M a t c h   ( i n   q u e r y ) :   s t r i n g   r e s o u r c e V e r s i o n M a t c h   s e n d I n i t i a l E v e n t s   ( i n   q u e r y ) :   b o o l e a n   s e n d I n i t i a l E v e n t s   t i m e o u t S e c o n d s   ( i n   q u e r y ) :   i n t e g e r   t i m e o u t S e c o n d s   w a t c h   ( i n   q u e r y ) :   b o o l e a n   w a t c h


Question: What is Response?

Answer: 2 0 0   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g L i s t ) :   O K   4 0 1 :   U n a u t h o r i z e d


Question: What is HTTP Request?

Answer: P O S T   / a p i s / a d m i s s i o n r e g i s t r a t i o n . k 8 s . i o / v 1 a l p h a 1 / m u t a t i n g a d m i s s i o n p o l i c y b i n d i n g s


Question: What is Parameters?

Answer: b o d y :   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ,   r e q u i r e d d r y R u n   ( i n   q u e r y ) :   s t r i n g d r y R u n f i e l d M a n a g e r   ( i n   q u e r y ) :   s t r i n g f i e l d M a n a g e r f i e l d V a l i d a t i o n   ( i n   q u e r y ) :   s t r i n g f i e l d V a l i d a t i o n p r e t t y   ( i n   q u e r y ) :   s t r i n g p r e t t y   b o d y :   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ,   r e q u i r e d   d r y R u n   ( i n   q u e r y ) :   s t r i n g   d r y R u n   f i e l d M a n a g e r   ( i n   q u e r y ) :   s t r i n g   f i e l d M a n a g e r   f i e l d V a l i d a t i o n   ( i n   q u e r y ) :   s t r i n g   f i e l d V a l i d a t i o n   p r e t t y   ( i n   q u e r y ) :   s t r i n g   p r e t t y


Question: What is Response?

Answer: 2 0 0   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) :   O K   2 0 1   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) :   C r e a t e d   2 0 2   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) :   A c c e p t e d   4 0 1 :   U n a u t h o r i z e d


Question: What is HTTP Request?

Answer: P U T   / a p i s / a d m i s s i o n r e g i s t r a t i o n . k 8 s . i o / v 1 a l p h a 1 / m u t a t i n g a d m i s s i o n p o l i c y b i n d i n g s / { n a m e }


Question: What is Parameters?

Answer: n a m e   ( i n   p a t h ) :   s t r i n g ,   r e q u i r e d n a m e   o f   t h e   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g b o d y :   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ,   r e q u i r e d d r y R u n   ( i n   q u e r y ) :   s t r i n g d r y R u n f i e l d M a n a g e r   ( i n   q u e r y ) :   s t r i n g f i e l d M a n a g e r f i e l d V a l i d a t i o n   ( i n   q u e r y ) :   s t r i n g f i e l d V a l i d a t i o n p r e t t y   ( i n   q u e r y ) :   s t r i n g p r e t t y   n a m e   ( i n   p a t h ) :   s t r i n g ,   r e q u i r e d   n a m e   o f   t h e   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g   b o d y :   M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ,   r e q u i r e d   d r y R u n   ( i n   q u e r y ) :   s t r i n g   d r y R u n   f i e l d M a n a g e r   ( i n   q u e r y ) :   s t r i n g   f i e l d M a n a g e r   f i e l d V a l i d a t i o n   ( i n   q u e r y ) :   s t r i n g   f i e l d V a l i d a t i o n   p r e t t y   ( i n   q u e r y ) :   s t r i n g   p r e t t y


Question: What is Response?

Answer: 2 0 0   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) :   O K   2 0 1   ( M u t a t i n g A d m i s s i o n P o l i c y B i n d i n g ) :   C r e a t e d   4 0 1 :   U n a u t h o r i z e d


Question: What is HTTP Request?

Answer: P A T C H   / a p i s / a d m i s s i o n r e g i s t r a t i o n . k 8 s . i o / v 1 a l p h a 1 / m u t a t i n g a d m i s s i o n p o l i c y b i n d i n g s / { n a m e }