2019-12-26 22:10:19 +05:30
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---
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AWSTemplateFormatVersion: "2010-09-09"
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Description: GitLab EKS Cluster
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Parameters:
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KubernetesVersion:
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Description: The Kubernetes version to install
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Type: String
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2020-11-24 15:15:51 +05:30
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Default: 1.16
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2019-12-26 22:10:19 +05:30
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AllowedValues:
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- 1.14
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2020-11-24 15:15:51 +05:30
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- 1.15
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- 1.16
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- 1.17
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2019-12-26 22:10:19 +05:30
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KeyName:
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Description: The EC2 Key Pair to allow SSH access to the node instances
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Type: AWS::EC2::KeyPair::KeyName
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NodeImageIdSSMParam:
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Type: "AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>"
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Default: /aws/service/eks/optimized-ami/1.14/amazon-linux-2/recommended/image_id
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Description: AWS Systems Manager Parameter Store parameter of the AMI ID for the worker node instances.
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NodeInstanceType:
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Description: EC2 instance type for the node instances
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Type: String
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Default: t3.medium
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ConstraintDescription: Must be a valid EC2 instance type
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AllowedValues:
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- t2.small
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- t2.medium
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- t2.large
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- t2.xlarge
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- t2.2xlarge
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- t3.nano
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- t3.micro
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- t3.small
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- t3.medium
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- t3.large
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- t3.xlarge
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- t3.2xlarge
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- m3.medium
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- m3.large
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- m3.xlarge
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- m3.2xlarge
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- m4.large
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- m4.xlarge
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- m4.2xlarge
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- m4.4xlarge
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- m4.10xlarge
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- m5.large
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- m5.xlarge
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- m5.2xlarge
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- m5.4xlarge
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- m5.12xlarge
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- m5.24xlarge
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- c4.large
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- c4.xlarge
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- c4.2xlarge
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- c4.4xlarge
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- c4.8xlarge
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- c5.large
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- c5.xlarge
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- c5.2xlarge
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- c5.4xlarge
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- c5.9xlarge
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- c5.18xlarge
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- i3.large
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- i3.xlarge
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- i3.2xlarge
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- i3.4xlarge
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- i3.8xlarge
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- i3.16xlarge
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- r3.xlarge
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- r3.2xlarge
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- r3.4xlarge
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- r3.8xlarge
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- r4.large
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- r4.xlarge
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- r4.2xlarge
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- r4.4xlarge
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- r4.8xlarge
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- r4.16xlarge
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- x1.16xlarge
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- x1.32xlarge
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- p2.xlarge
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- p2.8xlarge
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- p2.16xlarge
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- p3.2xlarge
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- p3.8xlarge
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- p3.16xlarge
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- p3dn.24xlarge
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- r5.large
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- r5.xlarge
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- r5.2xlarge
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- r5.4xlarge
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- r5.12xlarge
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- r5.24xlarge
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- r5d.large
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- r5d.xlarge
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- r5d.2xlarge
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- r5d.4xlarge
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- r5d.12xlarge
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- r5d.24xlarge
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- z1d.large
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- z1d.xlarge
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- z1d.2xlarge
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- z1d.3xlarge
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- z1d.6xlarge
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- z1d.12xlarge
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NodeAutoScalingGroupDesiredCapacity:
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Description: Desired capacity of Node Group ASG.
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Type: Number
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Default: 3
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NodeVolumeSize:
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Description: Node volume size
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Type: Number
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Default: 20
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ClusterName:
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Description: Unique name for your Amazon EKS cluster.
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Type: String
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ClusterRole:
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Description: The IAM Role to allow Amazon EKS and the Kubernetes control plane to manage AWS resources on your behalf.
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Type: String
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ClusterControlPlaneSecurityGroup:
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Description: The security groups to apply to the EKS-managed Elastic Network Interfaces that are created in your worker node subnets.
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Type: AWS::EC2::SecurityGroup::Id
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VpcId:
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Description: The VPC to use for your EKS Cluster resources.
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Type: AWS::EC2::VPC::Id
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Subnets:
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Description: The subnets in your VPC where your worker nodes will run.
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Type: List<AWS::EC2::Subnet::Id>
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Metadata:
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AWS::CloudFormation::Interface:
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ParameterGroups:
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- Label:
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default: EKS Cluster
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Parameters:
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- ClusterName
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- ClusterRole
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- KubernetesVersion
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- ClusterControlPlaneSecurityGroup
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- Label:
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default: Worker Node Configuration
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Parameters:
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- NodeAutoScalingGroupDesiredCapacity
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- NodeInstanceType
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- NodeImageIdSSMParam
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- NodeVolumeSize
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- KeyName
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- Label:
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default: Worker Network Configuration
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Parameters:
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- VpcId
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- Subnets
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Resources:
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Cluster:
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Type: AWS::EKS::Cluster
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Properties:
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Name: !Sub ${ClusterName}
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Version: !Sub ${KubernetesVersion}
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RoleArn: !Sub ${ClusterRole}
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ResourcesVpcConfig:
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SecurityGroupIds:
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- !Ref ClusterControlPlaneSecurityGroup
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SubnetIds: !Ref Subnets
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NodeInstanceProfile:
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Type: AWS::IAM::InstanceProfile
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Properties:
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Path: "/"
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Roles:
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- !Ref NodeInstanceRole
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NodeInstanceRole:
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Type: AWS::IAM::Role
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Properties:
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AssumeRolePolicyDocument:
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Version: "2012-10-17"
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Statement:
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- Effect: Allow
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Principal:
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Service: ec2.amazonaws.com
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Action: sts:AssumeRole
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Path: "/"
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ManagedPolicyArns:
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- arn:aws:iam::aws:policy/AmazonEKSWorkerNodePolicy
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- arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy
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- arn:aws:iam::aws:policy/AmazonEC2ContainerRegistryReadOnly
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NodeSecurityGroup:
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Type: AWS::EC2::SecurityGroup
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Properties:
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GroupDescription: Security group for all nodes in the cluster
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VpcId: !Ref VpcId
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Tags:
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- Key: !Sub kubernetes.io/cluster/${ClusterName}
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Value: owned
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NodeSecurityGroupIngress:
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Type: AWS::EC2::SecurityGroupIngress
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DependsOn: NodeSecurityGroup
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Properties:
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Description: Allow nodes to communicate with each other
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GroupId: !Ref NodeSecurityGroup
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SourceSecurityGroupId: !Ref NodeSecurityGroup
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IpProtocol: -1
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FromPort: 0
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ToPort: 65535
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NodeSecurityGroupFromControlPlaneIngress:
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Type: AWS::EC2::SecurityGroupIngress
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DependsOn: NodeSecurityGroup
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Properties:
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Description: Allow worker Kubelets and pods to receive communication from the cluster control plane
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GroupId: !Ref NodeSecurityGroup
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SourceSecurityGroupId: !Ref ClusterControlPlaneSecurityGroup
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IpProtocol: tcp
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FromPort: 1025
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ToPort: 65535
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ControlPlaneEgressToNodeSecurityGroup:
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Type: AWS::EC2::SecurityGroupEgress
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DependsOn: NodeSecurityGroup
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Properties:
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Description: Allow the cluster control plane to communicate with worker Kubelet and pods
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GroupId: !Ref ClusterControlPlaneSecurityGroup
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DestinationSecurityGroupId: !Ref NodeSecurityGroup
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IpProtocol: tcp
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FromPort: 1025
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ToPort: 65535
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NodeSecurityGroupFromControlPlaneOn443Ingress:
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Type: AWS::EC2::SecurityGroupIngress
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DependsOn: NodeSecurityGroup
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Properties:
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Description: Allow pods running extension API servers on port 443 to receive communication from cluster control plane
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GroupId: !Ref NodeSecurityGroup
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SourceSecurityGroupId: !Ref ClusterControlPlaneSecurityGroup
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IpProtocol: tcp
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FromPort: 443
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ToPort: 443
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ControlPlaneEgressToNodeSecurityGroupOn443:
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Type: AWS::EC2::SecurityGroupEgress
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DependsOn: NodeSecurityGroup
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Properties:
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Description: Allow the cluster control plane to communicate with pods running extension API servers on port 443
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GroupId: !Ref ClusterControlPlaneSecurityGroup
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DestinationSecurityGroupId: !Ref NodeSecurityGroup
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IpProtocol: tcp
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FromPort: 443
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ToPort: 443
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ClusterControlPlaneSecurityGroupIngress:
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Type: AWS::EC2::SecurityGroupIngress
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DependsOn: NodeSecurityGroup
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Properties:
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Description: Allow pods to communicate with the cluster API Server
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GroupId: !Ref ClusterControlPlaneSecurityGroup
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SourceSecurityGroupId: !Ref NodeSecurityGroup
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IpProtocol: tcp
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ToPort: 443
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FromPort: 443
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NodeGroup:
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Type: AWS::AutoScaling::AutoScalingGroup
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DependsOn: Cluster
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Properties:
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DesiredCapacity: !Ref NodeAutoScalingGroupDesiredCapacity
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LaunchConfigurationName: !Ref NodeLaunchConfig
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MinSize: !Ref NodeAutoScalingGroupDesiredCapacity
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MaxSize: !Ref NodeAutoScalingGroupDesiredCapacity
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VPCZoneIdentifier: !Ref Subnets
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Tags:
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- Key: Name
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Value: !Sub ${ClusterName}-node
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PropagateAtLaunch: true
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- Key: !Sub kubernetes.io/cluster/${ClusterName}
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Value: owned
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PropagateAtLaunch: true
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UpdatePolicy:
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AutoScalingRollingUpdate:
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MaxBatchSize: 1
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MinInstancesInService: !Ref NodeAutoScalingGroupDesiredCapacity
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PauseTime: PT5M
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NodeLaunchConfig:
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Type: AWS::AutoScaling::LaunchConfiguration
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Properties:
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AssociatePublicIpAddress: true
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IamInstanceProfile: !Ref NodeInstanceProfile
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ImageId: !Ref NodeImageIdSSMParam
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InstanceType: !Ref NodeInstanceType
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KeyName: !Ref KeyName
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SecurityGroups:
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- !Ref NodeSecurityGroup
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BlockDeviceMappings:
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- DeviceName: /dev/xvda
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Ebs:
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VolumeSize: !Ref NodeVolumeSize
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VolumeType: gp2
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DeleteOnTermination: true
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UserData:
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Fn::Base64:
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!Sub |
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#!/bin/bash
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set -o xtrace
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/etc/eks/bootstrap.sh "${ClusterName}"
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/opt/aws/bin/cfn-signal --exit-code $? \
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--stack ${AWS::StackName} \
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--resource NodeGroup \
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--region ${AWS::Region}
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Outputs:
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NodeInstanceRole:
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Description: The node instance role
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Value: !GetAtt NodeInstanceRole.Arn
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ClusterCertificate:
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Description: The cluster certificate
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Value: !GetAtt Cluster.CertificateAuthorityData
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ClusterEndpoint:
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Description: The cluster endpoint
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Value: !GetAtt Cluster.Endpoint
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