[AWS] EKS 실습 ( 원클릭으로 생성하기 )

EKS 설치 사용

2023.04.26 - [클라우드/AWS] - [AWS] EKS 설치 / 사용

[AWS] EKS 설치 / 사용

기술향상을 위해 EKS 스터디를 참여하게 되었습니다. 좋은 기회를 얻은 것 같습니다. ------ kubernetes 명령어 / 베어메탈로 설치한 경험은 있지만 AWS EKS는 처음이라 처음부터 제가 모르는 부분 하나

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실습환경

클라우드 환경 : AWS

준비 : AWS / SSH 키페어 (이름) / IAM 계정 생성 후 키 - 이전 글 참고

구성

설명 : Bastion을 생성하는 cloud fomation에서 EKSCTL을 생성하는 스크립트 실행

AZ : 3개 (192.168.1~3.0/24)

워커노드 :3 개

리전 : 서울

링크 << 눌러 파라미터 값 입력

* ADDON : kube-proxy , coredns , aws vpc cni

입력 파라미터 :

1. KeyName : 생성한 키페어 이름

2. Access Key :

3. Secret Key :

4. SgIngressSshCidr: 사용자 아이피

Yaml 내용 확인 해보기

AWSTemplateFormatVersion: '2010-09-09'

Metadata:

AWS::CloudFormation::Interface:

ParameterGroups:

- Label:

default: "<<<<< Deploy EC2 >>>>>"

Parameters:

- KeyName

- MyIamUserAccessKeyID

- MyIamUserSecretAccessKey

- SgIngressSshCidr

- MyInstanceType

- LatestAmiId

- Label:

default: "<<<<< EKS Config >>>>>"

Parameters:

- ClusterBaseName

- KubernetesVersion

- WorkerNodeInstanceType

- WorkerNodeCount

- WorkerNodeVolumesize

- Label:

default: "<<<<< Region AZ >>>>>"

Parameters:

- TargetRegion

- AvailabilityZone1

- AvailabilityZone2

- AvailabilityZone3

- Label:

default: "<<<<< VPC Subnet >>>>>"

Parameters:

- VpcBlock

- PublicSubnet1Block

- PublicSubnet2Block

- PublicSubnet3Block

- PrivateSubnet1Block

- PrivateSubnet2Block

- PrivateSubnet3Block

Parameters:

KeyName:

Description: Name of an existing EC2 KeyPair to enable SSH access to the instances. Linked to AWS Parameter

Type: AWS::EC2::KeyPair::KeyName

ConstraintDescription: must be the name of an existing EC2 KeyPair.

MyIamUserAccessKeyID:

Description: IAM User - AWS Access Key ID (won't be echoed)

Type: String

NoEcho: true

MyIamUserSecretAccessKey:

Description: IAM User - AWS Secret Access Key (won't be echoed)

Type: String

NoEcho: true

SgIngressSshCidr:

Description: The IP address range that can be used to communicate to the EC2 instances

Type: String

MinLength: '9'

MaxLength: '18'

Default: 0.0.0.0/0

AllowedPattern: (\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/(\d{1,2})

ConstraintDescription: must be a valid IP CIDR range of the form x.x.x.x/x.

MyInstanceType:

Description: Enter t2.micro, t2.small, t2.medium, t3.micro, t3.small, t3.medium. Default is t2.micro.

Type: String

Default: t3.medium

AllowedValues:

- t2.micro

- t2.small

- t2.medium

- t3.micro

- t3.small

- t3.medium

LatestAmiId:

Description: (DO NOT CHANGE)

Type: 'AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>'

Default: '/aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2'

AllowedValues:

- /aws/service/ami-amazon-linux-latest/amzn2-ami-hvm-x86_64-gp2

ClusterBaseName:

Type: String

Default: myeks

AllowedPattern: "[a-zA-Z][-a-zA-Z0-9]*"

Description: must be a valid Allowed Pattern '[a-zA-Z][-a-zA-Z0-9]*'

ConstraintDescription: ClusterBaseName - must be a valid Allowed Pattern

KubernetesVersion:

Description: Enter Kubernetes Version, 1.23 ~ 1.26

Type: String

Default: 1.24

WorkerNodeInstanceType:

Description: Enter EC2 Instance Type. Default is t3.medium.

Type: String

Default: t3.medium

WorkerNodeCount:

Description: Worker Node Counts

Type: String

Default: 3

WorkerNodeVolumesize:

Description: Worker Node Volumes size

Type: String

Default: 30

TargetRegion:

Type: String

Default: ap-northeast-2

AvailabilityZone1:

Type: String

Default: ap-northeast-2a

AvailabilityZone2:

Type: String

Default: ap-northeast-2b

AvailabilityZone3:

Type: String

Default: ap-northeast-2c

VpcBlock:

Type: String

Default: 192.168.0.0/16

PublicSubnet1Block:

Type: String

Default: 192.168.1.0/24

PublicSubnet2Block:

Type: String

Default: 192.168.2.0/24

PublicSubnet3Block:

Type: String

Default: 192.168.3.0/24

PrivateSubnet1Block:

Type: String

Default: 192.168.11.0/24

PrivateSubnet2Block:

Type: String

Default: 192.168.12.0/24

PrivateSubnet3Block:

Type: String

Default: 192.168.13.0/24

Resources:

# VPC

EksVPC:

Type: AWS::EC2::VPC

Properties:

CidrBlock: !Ref VpcBlock

EnableDnsSupport: true

EnableDnsHostnames: true

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-VPC

# PublicSubnets

PublicSubnet1:

Type: AWS::EC2::Subnet

Properties:

AvailabilityZone: !Ref AvailabilityZone1

CidrBlock: !Ref PublicSubnet1Block

VpcId: !Ref EksVPC

MapPublicIpOnLaunch: true

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PublicSubnet1

- Key: kubernetes.io/role/elb

Value: 1

PublicSubnet2:

Type: AWS::EC2::Subnet

Properties:

AvailabilityZone: !Ref AvailabilityZone2

CidrBlock: !Ref PublicSubnet2Block

VpcId: !Ref EksVPC

MapPublicIpOnLaunch: true

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PublicSubnet2

- Key: kubernetes.io/role/elb

Value: 1

PublicSubnet3:

Type: AWS::EC2::Subnet

Properties:

AvailabilityZone: !Ref AvailabilityZone3

CidrBlock: !Ref PublicSubnet3Block

VpcId: !Ref EksVPC

MapPublicIpOnLaunch: true

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PublicSubnet3

- Key: kubernetes.io/role/elb

Value: 1

InternetGateway:

Type: AWS::EC2::InternetGateway

VPCGatewayAttachment:

Type: AWS::EC2::VPCGatewayAttachment

Properties:

InternetGatewayId: !Ref InternetGateway

VpcId: !Ref EksVPC

PublicSubnetRouteTable:

Type: AWS::EC2::RouteTable

Properties:

VpcId: !Ref EksVPC

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PublicSubnetRouteTable

PublicSubnetRoute:

Type: AWS::EC2::Route

Properties:

RouteTableId: !Ref PublicSubnetRouteTable

DestinationCidrBlock: 0.0.0.0/0

GatewayId: !Ref InternetGateway

PublicSubnet1RouteTableAssociation:

Type: AWS::EC2::SubnetRouteTableAssociation

Properties:

SubnetId: !Ref PublicSubnet1

RouteTableId: !Ref PublicSubnetRouteTable

PublicSubnet2RouteTableAssociation:

Type: AWS::EC2::SubnetRouteTableAssociation

Properties:

SubnetId: !Ref PublicSubnet2

RouteTableId: !Ref PublicSubnetRouteTable

PublicSubnet3RouteTableAssociation:

Type: AWS::EC2::SubnetRouteTableAssociation

Properties:

SubnetId: !Ref PublicSubnet3

RouteTableId: !Ref PublicSubnetRouteTable

# PrivateSubnets

PrivateSubnet1:

Type: AWS::EC2::Subnet

Properties:

AvailabilityZone: !Ref AvailabilityZone1

CidrBlock: !Ref PrivateSubnet1Block

VpcId: !Ref EksVPC

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PrivateSubnet1

- Key: kubernetes.io/role/internal-elb

Value: 1

PrivateSubnet2:

Type: AWS::EC2::Subnet

Properties:

AvailabilityZone: !Ref AvailabilityZone2

CidrBlock: !Ref PrivateSubnet2Block

VpcId: !Ref EksVPC

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PrivateSubnet2

- Key: kubernetes.io/role/internal-elb

Value: 1

PrivateSubnet3:

Type: AWS::EC2::Subnet

Properties:

AvailabilityZone: !Ref AvailabilityZone3

CidrBlock: !Ref PrivateSubnet3Block

VpcId: !Ref EksVPC

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PrivateSubnet3

- Key: kubernetes.io/role/internal-elb

Value: 1

PrivateSubnetRouteTable:

Type: AWS::EC2::RouteTable

Properties:

VpcId: !Ref EksVPC

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-PrivateSubnetRouteTable

PrivateSubnet1RouteTableAssociation:

Type: AWS::EC2::SubnetRouteTableAssociation

Properties:

SubnetId: !Ref PrivateSubnet1

RouteTableId: !Ref PrivateSubnetRouteTable

PrivateSubnet2RouteTableAssociation:

Type: AWS::EC2::SubnetRouteTableAssociation

Properties:

SubnetId: !Ref PrivateSubnet2

RouteTableId: !Ref PrivateSubnetRouteTable

PrivateSubnet3RouteTableAssociation:

Type: AWS::EC2::SubnetRouteTableAssociation

Properties:

SubnetId: !Ref PrivateSubnet3

RouteTableId: !Ref PrivateSubnetRouteTable

# EKSCTL-Host

EKSEC2SG:

Type: AWS::EC2::SecurityGroup

Properties:

GroupDescription: eksctl-host Security Group

VpcId: !Ref EksVPC

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-HOST-SG

SecurityGroupIngress:

- IpProtocol: '-1'

#FromPort: '22'

#ToPort: '22'

CidrIp: !Ref SgIngressSshCidr

EKSEC2:

Type: AWS::EC2::Instance

Properties:

InstanceType: !Ref MyInstanceType

ImageId: !Ref LatestAmiId

KeyName: !Ref KeyName

Tags:

- Key: Name

Value: !Sub ${ClusterBaseName}-bastion-EC2

NetworkInterfaces:

- DeviceIndex: 0

SubnetId: !Ref PublicSubnet1

GroupSet:

- !Ref EKSEC2SG

AssociatePublicIpAddress: true

PrivateIpAddress: 192.168.1.100

BlockDeviceMappings:

- DeviceName: /dev/xvda

Ebs:

VolumeType: gp3

VolumeSize: 30

DeleteOnTermination: true

UserData:

Fn::Base64:

!Sub |

#!/bin/bash

hostnamectl --static set-hostname "${ClusterBaseName}-bastion-EC2"

# Config convenience

echo 'alias vi=vim' >> /etc/profile

echo "sudo su -" >> /home/ec2-user/.bashrc

# Change Timezone

sed -i "s/UTC/Asia\/Seoul/g" /etc/sysconfig/clock

ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime

# Install Packages

cd /root

yum -y install tree jq git htop lynx

# Install kubectl & helm

#curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.26.2/2023-03-17/bin/linux/amd64/kubectl

curl -O https://s3.us-west-2.amazonaws.com/amazon-eks/1.25.7/2023-03-17/bin/linux/amd64/kubectl

install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl

curl -s https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash

# Install eksctl

curl --silent --location "https://github.com/weaveworks/eksctl/releases/latest/download/eksctl_$(uname -s)_amd64.tar.gz" | tar xz -C /tmp

mv /tmp/eksctl /usr/local/bin

# Install aws cli v2

curl "https://awscli.amazonaws.com/awscli-exe-linux-x86_64.zip" -o "awscliv2.zip"

unzip awscliv2.zip >/dev/null 2>&1

sudo ./aws/install

complete -C '/usr/local/bin/aws_completer' aws

echo 'export AWS_PAGER=""' >>/etc/profile

export AWS_DEFAULT_REGION=${AWS::Region}

echo "export AWS_DEFAULT_REGION=$AWS_DEFAULT_REGION" >> /etc/profile

# Install YAML Highlighter

wget https://github.com/andreazorzetto/yh/releases/download/v0.4.0/yh-linux-amd64.zip

unzip yh-linux-amd64.zip

mv yh /usr/local/bin/

# Install krew

curl -LO https://github.com/kubernetes-sigs/krew/releases/download/v0.4.3/krew-linux_amd64.tar.gz

tar zxvf krew-linux_amd64.tar.gz

./krew-linux_amd64 install krew

export PATH="$PATH:/root/.krew/bin"

echo 'export PATH="$PATH:/root/.krew/bin"' >> /etc/profile

# Install krew plugin

kubectl krew install ctx ns get-all df-pv # ktop mtail tree

# Install kube-ps1

echo 'source <(kubectl completion bash)' >> /etc/profile

echo 'alias k=kubectl' >> /etc/profile

echo 'complete -F __start_kubectl k' >> /etc/profile

git clone https://github.com/jonmosco/kube-ps1.git /root/kube-ps1

cat <<"EOT" >> /root/.bash_profile

source /root/kube-ps1/kube-ps1.sh

KUBE_PS1_SYMBOL_ENABLE=false

function get_cluster_short() {

echo "$1" | cut -d . -f1

}

KUBE_PS1_CLUSTER_FUNCTION=get_cluster_short

KUBE_PS1_SUFFIX=') '

PS1='$(kube_ps1)'$PS1

EOT

# Install Docker

amazon-linux-extras install docker -y

systemctl start docker && systemctl enable docker

# Create SSH Keypair

ssh-keygen -t rsa -N "" -f /root/.ssh/id_rsa

# IAM User Credentials

export AWS_ACCESS_KEY_ID=${MyIamUserAccessKeyID}

export AWS_SECRET_ACCESS_KEY=${MyIamUserSecretAccessKey}

export AWS_DEFAULT_REGION=${AWS::Region}

export ACCOUNT_ID=$(aws sts get-caller-identity --query 'Account' --output text)

echo "export AWS_ACCESS_KEY_ID=$AWS_ACCESS_KEY_ID" >> /etc/profile

echo "export AWS_SECRET_ACCESS_KEY=$AWS_SECRET_ACCESS_KEY" >> /etc/profile

echo "export AWS_DEFAULT_REGION=$AWS_DEFAULT_REGION" >> /etc/profile

echo "export ACCOUNT_ID=$(aws sts get-caller-identity --query 'Account' --output text)" >> /etc/profile

# CLUSTER_NAME

export CLUSTER_NAME=${ClusterBaseName}

echo "export CLUSTER_NAME=$CLUSTER_NAME" >> /etc/profile

# K8S Version

export KUBERNETES_VERSION=${KubernetesVersion}

echo "export KUBERNETES_VERSION=$KUBERNETES_VERSION" >> /etc/profile

# VPC & Subnet

export VPCID=$(aws ec2 describe-vpcs --filters "Name=tag:Name,Values=$CLUSTER_NAME-VPC" | jq -r .Vpcs[].VpcId)

echo "export VPCID=$VPCID" >> /etc/profile

export PubSubnet1=$(aws ec2 describe-subnets --filters Name=tag:Name,Values="$CLUSTER_NAME-PublicSubnet1" --query "Subnets[0].[SubnetId]" --output text)

export PubSubnet2=$(aws ec2 describe-subnets --filters Name=tag:Name,Values="$CLUSTER_NAME-PublicSubnet2" --query "Subnets[0].[SubnetId]" --output text)

export PubSubnet3=$(aws ec2 describe-subnets --filters Name=tag:Name,Values="$CLUSTER_NAME-PublicSubnet3" --query "Subnets[0].[SubnetId]" --output text)

echo "export PubSubnet1=$PubSubnet1" >> /etc/profile

echo "export PubSubnet2=$PubSubnet2" >> /etc/profile

echo "export PubSubnet3=$PubSubnet3" >> /etc/profile

export PrivateSubnet1=$(aws ec2 describe-subnets --filters Name=tag:Name,Values="$CLUSTER_NAME-PrivateSubnet1" --query "Subnets[0].[SubnetId]" --output text)

export PrivateSubnet2=$(aws ec2 describe-subnets --filters Name=tag:Name,Values="$CLUSTER_NAME-PrivateSubnet2" --query "Subnets[0].[SubnetId]" --output text)

export PrivateSubnet3=$(aws ec2 describe-subnets --filters Name=tag:Name,Values="$CLUSTER_NAME-PrivateSubnet3" --query "Subnets[0].[SubnetId]" --output text)

echo "export PrivateSubnet1=$PrivateSubnet1" >> /etc/profile

echo "export PrivateSubnet2=$PrivateSubnet2" >> /etc/profile

echo "export PrivateSubnet3=$PrivateSubnet3" >> /etc/profile

# Create EKS Cluster & Nodegroup

#eksctl create cluster --name $CLUSTER_NAME --region=$AWS_DEFAULT_REGION --nodegroup-name=ng1 --node-type=${WorkerNodeInstanceType} --nodes ${WorkerNodeCount} --node-volume-size=${WorkerNodeVolumesize} --vpc-public-subnets "$PubSubnet1","$PubSubnet2","$PubSubnet3" --version ${KubernetesVersion} --ssh-access --ssh-public-key ${KeyName} --with-oidc --external-dns-access --full-ecr-access --dry-run > myeks.yaml

eksctl create cluster --name $CLUSTER_NAME --region=$AWS_DEFAULT_REGION --nodegroup-name=ng1 --node-type=${WorkerNodeInstanceType} --nodes ${WorkerNodeCount} --node-volume-size=${WorkerNodeVolumesize} --vpc-public-subnets "$PubSubnet1","$PubSubnet2","$PubSubnet3" --version ${KubernetesVersion} --ssh-access --ssh-public-key /root/.ssh/id_rsa.pub --with-oidc --external-dns-access --full-ecr-access --dry-run > myeks.yaml

sed -i 's/certManager: false/certManager: true/g' myeks.yaml

sed -i 's/ebs: false/ebs: true/g' myeks.yaml

cat <<EOT >> myeks.yaml

addons:

- name: vpc-cni # no version is specified so it deploys the default version

version: v1.12.6-eksbuild.1

attachPolicyARNs:

- arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy

- name: kube-proxy

version: latest # auto discovers the latest available

- name: coredns

version: latest # v1.9.3-eksbuild.2

EOT

nohup eksctl create cluster -f myeks.yaml --verbose 4 --kubeconfig "/root/.kube/config" 1> /root/create-eks.log 2>&1 &

echo 'cloudinit End!'

Outputs:

eksctlhost:

Value: !GetAtt EKSEC2.PublicIp

curl -O https://s3.ap-northeast-2.amazonaws.com/cloudformation.cloudneta.net/K8S/eks-oneclick.yaml

AWSCLI 가 편하다면 아래와 같이 진행 (동작 시간 20분 내외)

curl -O https://s3.ap-northeast-2.amazonaws.com/cloudformation.cloudneta.net/K8S/eks-oneclick.yaml

# CloudFormation 스택 배포
# aws cloudformation deploy --template-file eks-oneclick.yaml --stack-name myeks --parameter-overrides KeyName=<My SSH Keyname> SgIngressSshCidr=<My Home Public IP Address>/32 MyIamUserAccessKeyID=<IAM User의 액세스키> MyIamUserSecretAccessKey=<IAM User의 시크릿 키> ClusterBaseName='<eks 이름>' --region ap-northeast-2
예시) aws cloudformation deploy --template-file eks-oneclick.yaml --stack-name myeks --parameter-overrides KeyName=kp-gasida SgIngressSshCidr=$(curl -s ipinfo.io/ip)/32  MyIamUserAccessKeyID=AKIA5... MyIamUserSecretAccessKey='CVNa2...' ClusterBaseName=myeks --region ap-northeast-2

## Tip. 워커노드 인스턴스 타입 변경 : WorkerNodeInstanceType=t3.xlarge
예시) aws cloudformation deploy --template-file eks-oneclick.yaml --stack-name myeks --parameter-overrides KeyName=kp-gasida SgIngressSshCidr=$(curl -s ipinfo.io/ip)/32  MyIamUserAccessKeyID=AKIA5... MyIamUserSecretAccessKey='CVNa2...' ClusterBaseName=myeks --region ap-northeast-2 WorkerNodeInstanceType=t3.xlarge 

# CloudFormation 스택 배포 완료 후 작업용 EC2 IP 출력
aws cloudformation describe-stacks --stack-name myeks --query 'Stacks[*].Outputs[0].OutputValue' --output text

# 마스터노드 SSH 접속
ssh -i ~/.ssh/kp-gasida.pem ec2-user@$(aws cloudformation describe-stacks --stack-name myeks --query 'Stacks[*].Outputs[0].OutputValue' --output text)

저작자표시

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