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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -65,7 +65,7 @@ aws ec2 create-tags \ --resources $(echo $SUBNET_IDS | tr ',' '\n') \ --tags Key="kubernetes.io/cluster/$CLUSTER_NAME",Value= curl -fsSL https://raw.githubusercontent.com/aws/karpenter/v0.30.0/website/content/en/preview/getting-started/getting-started-with-karpenter/cloudformation.yaml \ | tee karpenter.yaml aws cloudformation deploy \ -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -65,7 +65,7 @@ aws ec2 create-tags \ --resources $(echo $SUBNET_IDS | tr ',' '\n') \ --tags Key="kubernetes.io/cluster/$CLUSTER_NAME",Value= curl -fsSL https://karpenter.sh/v0.16.2/getting-started/getting-started-with-eksctl/cloudformation.yaml \ | tee karpenter.yaml aws cloudformation deploy \ -
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This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -1,9 +1,12 @@ # Source: https://gist.github.com/baaf4adb25e9efaba886c17a2ad722a5 ######################################################## # How To Auto-Scale Kubernetes Clusters With Karpenter # # https://youtu.be/C-2v7HT-uSA # ######################################################## # Referenced videos: # - Karpenter: https://karpenter.sh # - GKE Autopilot - Fully Managed Kubernetes Service From Google: https://youtu.be/Zztufl4mFQ4 ######### -
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Learn more about bidirectional Unicode charactersOriginal file line number Diff line number Diff line change @@ -0,0 +1,185 @@ ######################################################## # How To Auto-Scale Kubernetes Clusters With Karpenter # # https://youtu.be/C-2v7HT-uSA # ######################################################## # Referenced videos: # - GKE Autopilot - Fully Managed Kubernetes Service From Google: https://youtu.be/Zztufl4mFQ4 ######### # Setup # ######### git clone https://github.com/vfarcic/karpenter-demo cd karpenter-demo export CLUSTER_NAME=devops-toolkit # Replace `[...]` with your access key ID export AWS_ACCESS_KEY_ID=[...] # Replace `[...]` with your secret access key export AWS_SECRET_ACCESS_KEY=[...] export AWS_DEFAULT_REGION=us-east-1 cat cluster.yaml \ | sed -e "s@name: .*@name: $CLUSTER_NAME@g" \ | sed -e "s@region: .*@region: $AWS_DEFAULT_REGION@g" \ | tee cluster.yaml cat provisioner.yaml \ | sed -e "s@instanceProfile: .*@instanceProfile: KarpenterNodeInstanceProfile-$CLUSTER_NAME@g" \ | sed -e "s@.* # Zones@ values: [${AWS_DEFAULT_REGION}a, ${AWS_DEFAULT_REGION}b, ${AWS_DEFAULT_REGION}c] # Zones@g" \ | tee provisioner.yaml cat app.yaml \ | sed -e "[email protected]/zone: .*@topology.kubernetes.io/zone: ${AWS_DEFAULT_REGION}a@g" \ | tee app.yaml eksctl create cluster \ --config-file cluster.yaml export CLUSTER_ENDPOINT=$(aws eks describe-cluster \ --name $CLUSTER_NAME \ --query "cluster.endpoint" \ --output json) echo $CLUSTER_ENDPOINT ########################### # Karpenter Prerequisites # ########################### export SUBNET_IDS=$(\ aws cloudformation describe-stacks \ --stack-name eksctl-$CLUSTER_NAME-cluster \ --query 'Stacks[].Outputs[?OutputKey==`SubnetsPrivate`].OutputValue' \ --output text) aws ec2 create-tags \ --resources $(echo $SUBNET_IDS | tr ',' '\n') \ --tags Key="kubernetes.io/cluster/$CLUSTER_NAME",Value= curl -fsSL https://karpenter.sh/docs/getting-started/cloudformation.yaml \ | tee karpenter.yaml aws cloudformation deploy \ --stack-name Karpenter-$CLUSTER_NAME \ --template-file karpenter.yaml \ --capabilities CAPABILITY_NAMED_IAM \ --parameter-overrides ClusterName=$CLUSTER_NAME export AWS_ACCOUNT_ID=$(\ aws sts get-caller-identity \ --query Account \ --output text) eksctl create iamidentitymapping \ --username system:node:{{EC2PrivateDNSName}} \ --cluster $CLUSTER_NAME \ --arn arn:aws:iam::${AWS_ACCOUNT_ID}:role/KarpenterNodeRole-$CLUSTER_NAME \ --group system:bootstrappers \ --group system:nodes eksctl create iamserviceaccount \ --cluster $CLUSTER_NAME \ --name karpenter \ --namespace karpenter \ --attach-policy-arn arn:aws:iam::$AWS_ACCOUNT_ID:policy/KarpenterControllerPolicy-$CLUSTER_NAME \ --approve # Execute only if this is the first time using spot instances in this account aws iam create-service-linked-role \ --aws-service-name spot.amazonaws.com ########################################### # Applications Without Cluster Autoscaler # ########################################### kubectl get nodes cat app.yaml kubectl apply --filename app.yaml kubectl get pods,nodes ##################### # Install Karpenter # ##################### helm repo add karpenter \ https://charts.karpenter.sh helm repo update helm upgrade --install \ karpenter karpenter/karpenter \ --namespace karpenter \ --create-namespace \ --set serviceAccount.create=false \ --version 0.5.0 \ --set controller.clusterName=$CLUSTER_NAME \ --set controller.clusterEndpoint=$CLUSTER_ENDPOINT \ --wait kubectl --namespace karpenter get all ############################################## # Scale Up Kubernetes Cluster With Karpenter # ############################################## cat provisioner.yaml # Open https://kubernetes.io/docs/reference/labels-annotations-taints/ kubectl apply \ --filename provisioner.yaml kubectl get pods,nodes kubectl get pods,nodes kubectl --namespace karpenter logs \ --selector karpenter=controller #################################################### # Scale Down The Kubernetes Cluster With Karpenter # #################################################### kubectl delete --filename app.yaml kubectl --namespace karpenter logs \ --selector karpenter=controller kubectl get nodes ########### # Destroy # ########### helm --namespace karpenter \ uninstall karpenter eksctl delete iamserviceaccount \ --cluster $CLUSTER_NAME \ --name karpenter \ --namespace karpenter aws cloudformation delete-stack \ --stack-name Karpenter-$CLUSTER_NAME # Install jq from https://stedolan.github.io/jq if you do not have it already aws ec2 describe-launch-templates \ | jq -r ".LaunchTemplates[].LaunchTemplateName" \ | grep -i Karpenter-$CLUSTER_NAME \ | xargs -I{} \ aws ec2 delete-launch-template \ --launch-template-name {} eksctl delete cluster \ --name $CLUSTER_NAME \ --region $AWS_DEFAULT_REGION