Node Group Operations

 

get node group details of the cluster

  eksctl get nodegroup --cluster EKS-raman-cluster

scale-out node group to 5 nodes and then check no of instances created in EC2

 eksctl scale nodegroup --cluster EKS-raman-cluster  --name ng-1 --nodes 5 --nodes-max 5

scale in node group to 3 nodes and then check no of instances created in EC2

 eksctl scale nodegroup --cluster EKS-raman-cluster  --name ng-1 --nodes 3

create a new node group with spot instance and demand instance

First, create a yaml file as mentioned below (nodegroup.yml)

  apiVersion: eksctl.io/v1alpha5
  kind: ClusterConfig

  metadata:
    name: EKS-raman-cluster
    region: us-east-1

  nodeGroups:
    - name: ng-1
      instanceType: t2.small
      desiredCapacity: 3
      ssh: # use existing EC2 key
        publicKeyName: vdevops
    - name: ng-mixed
      minSize: 3
      maxSize: 5
      instancesDistribution:
        maxPrice: 0.2
        instanceTypes: ["t2.small", "t3.small"]
        onDemandBaseCapacity: 0
        onDemandPercentageAboveBaseCapacity: 50
      ssh:
        publicKeyName: vdevops

Run the below command to create ng-mixed node group and after that check in the ec2 instances.

    eksctl create nodegroup --config-file=nodegroup.yml --include='ng-mixed'

Run the below command to delete ng-mixed node group

     eksctl delete nodegroup --config-file=nodegroup.yml --include=ng-mixed --approve