Kubernetes_Cluster_AutoScale/Commands-ca.json - main - osbornray/PythonHacks

Kubernetes_Cluster_AutoScale/Commands-ca.json
55 строк2 KB
RekhuGopal
14 ноя 2021, 19:30
14 ноя 2021, 19:303d387e1
##################### Create AWS EKS clsuster #######################################################################

## Pre-requisite links
https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

## Pre-requisite links
https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

## Create EKS cluster
eksctl create cluster --name clusteratoscales --node-type t2.large --nodes 2 --nodes-min 2 --nodes-max 3 --region us-east-1 --zones=us-east-1a,us-east-1b,us-east-1c

## Get EKS Cluster service
eksctl get cluster --name clusteratoscales --region us-east-1

## Get EKS Pod data.
kubectl get pods --all-namespaces

## Delete EKS cluster
eksctl delete cluster --name clusteratoscales --region us-east-1

####################################################################################################################

#################### EKS Cluster Autoscaling Configuration (CA) ############################################

## Create node group after eks cluster creation with a tag of below keys and vlaues
k8s.io/cluster-autoscaler/<cluster-name>: owned
k8s.io/cluster-autoscaler/enabled : TRUE

##Check the existing configurations (change your eks cluster name value).
aws autoscaling describe-auto-scaling-groups 

#Creating an IAM policy for your service account that will allow your CA pod to interact with the autoscaling groups.
aws iam create-policy --policy-name k8s-asg-policy --policy-document file://k8s-asg-policy.json

## Deploy the Cluster Autoscaler (CA)
# Deploy the Cluster Autoscaler to your cluster with the following command
# https://raw.githubusercontent.com/kubernetes/autoscaler/master/cluster-autoscaler/cloudprovider/aws/examples/cluster-autoscaler-autodiscover.yaml
kubectl apply -f ./cluster-autoscaler-autodiscover.yaml

## Check node number before scaling
kubectl get nodes -w

## Create an example deployment
kubectl create deployment autoscaler-demo --image=nginx

## Scale to great extent
kubectl scale deployment autoscaler-demo --replicas=100

## To check the progress of the pod’s deployment
kubectl get deployment autoscaler-demo --watch

## Evaluate the nodes number getting increased.
kubectl get nodes

####################################################################################################################