[AWS] AWS Load Balancer Controller 설치하기

AWS Load Balancer Controller 란?

Ingress를 AWS ALB 또는 NLB로 사용할때 필요한 컨트롤러 입니다. 이전에(20년10월 이전) "AWS ALB Ingress Controller"로 알려졌으며 "AWS Load Balancer Controller"로 브랜드를 변경했습니다. [참고]alb load balancer controller 공식 github 주소

AWS Load Balancer Controller image releases 정보

https://github.com/kubernetes-sigs/aws-load-balancer-controller/releases/

AWS Load Balancer Controller 설치

oidc install

eksctl utils associate-iam-oidc-provider \
    --region ap-northeast-2 \
    --cluster test-eksctl2 \
    --approve

iam policy crate

curl -o iam-policy.json https://raw.githubusercontent.com/kubernetes-sigs/aws-load-balancer-controller/main/docs/install/iam_policy.json
aws iam create-policy \
    --policy-name AWSLoadBalancerControllerIAMPolicy \
    --policy-document file://iam-policy.json

service account

eksctl create iamserviceaccount \
--cluster=test-eksctl2  \
--namespace=kube-system \
--name=aws-load-balancer-controller \
--attach-policy-arn=arn:aws:iam::058475846659:policy/AWSLoadBalancerControllerIAMPolicy \
--approve

crds apply

kubectl apply -k "github.com/aws/eks-charts/stable/aws-load-balancer-controller//crds?ref=master"
kubectl get crd

install aws loadbalancer ingress

• helm chart add

helm repo add eks https://aws.github.io/eks-charts

• using service account
  위에서 eksctl create iamserviceaccount를 하였으므로 kubectl get sa aws-load-balancer-controller -n kube-system로 잘 생성이 되었는지 확인하고 아래 명령어 입력

helm install aws-load-balancer-controller eks/aws-load-balancer-controller --set clusterName=test-eksctl2 -n kube-system --set serviceAccount.create=false --set serviceAccount.name=aws-load-balancer-controller

• not using service account

helm upgrade -i aws-load-balancer-controller eks/aws-load-balancer-controller -n kube-system --set clusterName=test-eksctl2

delete helm

helm delete aws-load-balancer-controller -n kube-system

ingress test sample(deployment/service/ingress)

export EKS_CLUSTER_VERSION=$(aws eks describe-cluster --name test-eksctl2 --query cluster.version --output text)

if [ "`echo "${EKS_CLUSTER_VERSION} < 1.19" | bc`" -eq 1 ]; then     
    curl -s https://raw.githubusercontent.com/kubernetes-sigs/aws-load-balancer-controller/main/docs/examples/2048/2048_full.yaml \
    | sed 's=alb.ingress.kubernetes.io/target-type: ip=alb.ingress.kubernetes.io/target-type: instance=g' \
    | kubectl apply -f -
fi

if [ "`echo "${EKS_CLUSTER_VERSION} >= 1.19" | bc`" -eq 1 ]; then     
    curl -s https://raw.githubusercontent.com/kubernetes-sigs/aws-load-balancer-controller/main/docs/examples/2048/2048_full_latest.yaml \
    | sed 's=alb.ingress.kubernetes.io/target-type: ip=alb.ingress.kubernetes.io/target-type: instance=g' \
    | kubectl apply -f -
fi