Aks add taint to node pool

1. How do you add a taint to AKS node pool?
2. What is the difference between system node pool and user node pool AKS?
3. What is NoSchedule taint?
4. What is the difference between node pool and cluster?
5. How do I remove taint from a node?
6. How do I deploy an application to a particular node in Kubernetes?
7. What is node affinity vs taint?
8. What is primary node pool in Aks?
9. How do you increase node size in pool?
10. How do I increase the size of an AKS node disk?
11. What is the difference between node pool and cluster?
12. What is the minimum number of AKS node pools?
13. How do you add nodes?

How do you add a taint to AKS node pool?

To create a node pool with a taint, use az aks nodepool add . Specify the name taintnp and use the --node-taints parameter to specify sku=gpu:NoSchedule for the taint.

What is the difference between system node pool and user node pool AKS?

System node pools and user node pools are two different node pool modes for your AKS clusters. System node pools serve the primary purpose of hosting critical system pods such as CoreDNS and metrics-server . User node pools serve the primary purpose of hosting your application pods.

What is NoSchedule taint?

The taint effect defines how a tainted node reacts to a pod without appropriate toleration. It must be one of the following effects; NoSchedule—The pod will not get scheduled to the node without a matching toleration. NoExecute—This will immediately evict all the pods without the matching toleration from the node.

What is the difference between node pool and cluster?

A node pool is simply a collection, or “pool,” of machines with the same configuration. Now instead of a uniform cluster where all the nodes are the same, you can have multiple node pools that better suit your needs.

How do I remove taint from a node?

Remove a taint from a node

You can use kubectl taint to remove taints. You can remove taints by key, key-value, or key-effect. Note: Starting in GKE version 1.22, cluster autoscaler combines existing node and node pool information to represent the whole node pool.

How do I deploy an application to a particular node in Kubernetes?

You can add the nodeSelector field to your Pod specification and specify the node labels you want the target node to have. Kubernetes only schedules the Pod onto nodes that have each of the labels you specify. See Assign Pods to Nodes for more information.

What is node affinity vs taint?

So a combination of both Taints and Toleration and node affinity is used. We apply taints red, blue and green to nodes to prevent undesired pods to be placed in tainted nodes. We apply key-value pair labels on nodes and we then configure nodes with appropriate affinity which will let the pods chose nodes.

What is primary node pool in Aks?

Primary node pool is the first nodepool in the cluster and you cannot delete it, because its currently not supported. You can create and delete additional node pools and just let primary be as it is. It will not create any trouble.

How do you increase node size in pool?

Assume you want to resize an existing node pool, called nodepool1 , from SKU size Standard_DS2_v2 to Standard_DS3_v2. To accomplish this task, you'll need to create a new node pool using Standard_DS3_v2, move workloads from nodepool1 to the new node pool, and remove nodepool1 .

How do I increase the size of an AKS node disk?

First, we add a new node pool of type System with the new node size to our AKS cluster by running az aks nodepool add with all the necessary parameters we need. After that, we disable the cluster autoscaler on the default node pool by running az aks nodepool update –disable-cluster-autoscaler.

What is the difference between node pool and cluster?

A node pool is simply a collection, or “pool,” of machines with the same configuration. Now instead of a uniform cluster where all the nodes are the same, you can have multiple node pools that better suit your needs.

What is the minimum number of AKS node pools?

They can have a minimum of 1 node, but it is recommended to have 2 nodes or 3 if it is your only Linux node pool. They only support AKS cluster running on Virtual Machine Scale Sets.

How do you add nodes?

You can use either the addnode command or the Add Node wizard in the management GUI. To access the Add Node wizard, select Monitoring > System. On the image, click the new node to start the wizard. Complete the wizard and verify the new node.