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AWSTemplateFormatVersion: '2010-09-09'
Description: A stack for deploying containerized applications onto a cluster of EC2
hosts using Elastic Container Service. This stack runs containers on
hosts that are in a public VPC subnet.
Parameters:
TemplateBucketName:
Description: S3 bucket containing cloudformation templates
Type: String
ECSAMI:
Description: AMI ID
Type: AWS::SSM::Parameter::Value<AWS::EC2::Image::Id>
Default: /aws/service/ecs/optimized-ami/amazon-linux-2/recommended/image_id
InstanceType:
Description: EC2 instance type
Type: String
Default: m4.2xlarge
AllowedValues: [t2.micro, t2.small, t2.medium, t2.large, m3.medium, m3.large,
m3.xlarge, m3.2xlarge, m4.large, m4.xlarge, m4.2xlarge, m4.4xlarge, m4.10xlarge,
c4.large, c4.xlarge, c4.2xlarge, c4.4xlarge, c4.8xlarge, c3.large, c3.xlarge,
c3.2xlarge, c3.4xlarge, c3.8xlarge, r3.large, r3.xlarge, r3.2xlarge, r3.4xlarge,
r3.8xlarge, i2.xlarge, i2.2xlarge, i2.4xlarge, i2.8xlarge]
ConstraintDescription: Please choose a valid instance type.
InternetGatewayIdProp:
Type: String
Default: ""
Description: Internet Gateway id. If empty Internet Gateway will be created
VPCIdProp:
Type: String
Default: ""
Description: VPC id. If empty VPC will be created
SubnetIdProp:
Type: String
Default: ""
Description: Subnet id. If empty Network Stack will be created
SubnetCIDR:
Type: String
Default: 10.0.0.0/24
Description: Subnet CIDR.
VPCCIDR:
Type: String
Default: 10.0.0.0/16
Description: VPC CIDR.
ECSKeyName:
Type: String
Default: gerrit-cluster-keys
Description: EC2 key pair name the cluter's instances
EnvironmentName:
Description: An environment name used to build the log stream names
Type: String
Default: test
PrimaryFileSystemThroughputMode:
Description: Gerrit primary shared filesystem throughput mode
Type: String
Default: bursting
AllowedValues: [bursting, provisioned]
PrimaryFileSystemID:
Description: Gerrit primary shared filesystem id
Type: String
Default: ""
PrimaryProvisionedThroughputInMibps:
Description: Gerrit primary filesystem throughput, measured in MiB/s. Valid values are 1-1024.
Type: Number
Default: 256
HAProxyMaxCount:
Description: The maximum number of EC2 instances in the haproxy autoscaling group
Type: Number
Default: 2
HAProxyDesiredCount:
Description: The desired number of haproxy instances
ConstraintDescription: number of haproxy must be at least 2
Type: Number
MinValue: 2
Default: 2
PrimaryMaxCount:
Description: The maximum number of EC2 instances in the primary autoscaling group
ConstraintDescription: number of haproxy must be at least 2
Type: Number
Default: 2
MinValue: 2
GerritVolumeSnapshotId:
Description: Id of the EBS snapshot for Gerrit volume
Type: String
Default: ""
GerritVolumeAttachMaxRetries:
Description: Maximum number of retries when attaching Gerrit Volume
Type: Number
Default: 5
GerritVolumeAttachRetryDelay:
Description: The delay in seconds between Gerrit Volume attach attempts
Type: Number
Default: 5
GerritVolumeSizeInGiB:
Description: Gerrit volume size in GiB
Type: Number
Default: 10
ReplicaFileSystemID:
Description: Gerrit replicas shared filesystem id
Type: String
Default: ""
ReplicaFileSystemThroughputMode:
Description: Gerrit replicas shared filesystem throughput mode
Type: String
Default: bursting
AllowedValues: [bursting, provisioned]
ReplicaProvisionedThroughputInMibps:
Description: Gerrit replicas shared filesystem throughput, measured in MiB/s. Valid values are 1-1024.
Type: Number
Default: 256
ReplicaAutoScalingMinCapacity:
Type: Number
Description: The minimum number of tasks that replicas should scale in to
Default: 1
ReplicaAutoScalingDesiredCapacity:
Description: The desired number of replica tasks to run
Type: Number
Default: 1
ReplicaAutoScalingMaxCapacity:
Type: Number
Description: The maximum number of tasks that replicas should scale out to
Default: 2
ReplicaCapacityProviderTarget:
Type: Number
Description: The target capacity value for the capacity provider of replicas
ConstraintDescription: The specified value must be > 0 and <= 100
Default: 100
MinValue: 1
MaxValue: 100
ReplicaCapacityProviderMinStepSize:
Type: Number
Description: The minimum number of EC2 instances for replicas that will scale in or scale out at one time
ConstraintDescription: The specified value must be >= 1 and <= 10
Default: 1
MinValue: 1
MaxValue: 10
ReplicaCapacityProviderMaxStepSize:
Type: Number
Description: The maximum number of EC2 instances for replicas that will scale in or scale out at one time
ConstraintDescription: The specified value must be >= 1 and less <= 10
Default: 1
MinValue: 1
MaxValue: 10
Conditions:
isProvisionedThroughput: !Equals [!Ref PrimaryFileSystemThroughputMode, "provisioned"]
CreatePrimaryEFS: !Equals [!Ref PrimaryFileSystemID, ""]
CreateReplicaEFS: !Equals [!Ref ReplicaFileSystemID, ""]
NetworkStackNeeded: !Or
- !Equals [!Ref VPCIdProp, ""]
- !And
- !Equals [!Ref InternetGatewayIdProp, ""]
- !Equals [!Ref SubnetIdProp, ""]
Resources:
# ECS Resources
ECSCluster:
Type: AWS::ECS::Cluster
Properties:
ClusterName: !Sub '${AWS::StackName}-ECSCluster'
CapacityProviders: [ !Ref ReplicaCapacityProvider ]
ReplicaCapacityProvider:
Type: AWS::ECS::CapacityProvider
Properties:
Name: !Sub '${AWS::StackName}-ReplicaCapacityProvider'
AutoScalingGroupProvider:
AutoScalingGroupArn: !Ref ReplicaECSAutoScalingGroup
ManagedTerminationProtection: ENABLED
ManagedScaling:
MaximumScalingStepSize: !Ref ReplicaCapacityProviderMaxStepSize
MinimumScalingStepSize: !Ref ReplicaCapacityProviderMinStepSize
Status: ENABLED
TargetCapacity: !Ref ReplicaCapacityProviderTarget
EcsHostSecurityGroup:
Type: AWS::EC2::SecurityGroup
Properties:
GroupDescription: Access to the ECS hosts that run containers
VpcId: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.VPCRef, !Ref VPCIdProp]
SecurityGroupIngress:
# Allow access to NLB from anywhere on the internet
- CidrIp: 0.0.0.0/0
IpProtocol: -1
CloudWatchLogsGroup:
Type: AWS::Logs::LogGroup
Properties:
LogGroupName: !Ref AWS::StackName
RetentionInDays: 14
ReplicaECSAutoScalingGroup:
Type: AWS::AutoScaling::AutoScalingGroup
Properties:
VPCZoneIdentifier:
- !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.PublicSubnetOneRef, !Ref SubnetIdProp]
LaunchConfigurationName: !Ref 'ReplicaLaunchConfiguration'
MinSize: !Ref ReplicaAutoScalingMinCapacity
MaxSize: !Ref ReplicaAutoScalingMaxCapacity
DesiredCapacity: !Ref ReplicaAutoScalingDesiredCapacity
NewInstancesProtectedFromScaleIn: true
CreationPolicy:
ResourceSignal:
Timeout: PT15M
UpdatePolicy:
AutoScalingReplacingUpdate:
WillReplace: 'true'
ReplicaLaunchConfiguration:
Type: AWS::AutoScaling::LaunchConfiguration
Properties:
ImageId: !Ref 'ECSAMI'
SecurityGroups: [!Ref 'EcsHostSecurityGroup']
InstanceType: !Ref 'InstanceType'
IamInstanceProfile: !Ref 'EC2InstanceProfile'
KeyName: !Ref ECSKeyName
UserData:
Fn::Base64: !Sub |
#!/bin/bash -xe
echo ECS_CLUSTER=${AWS::StackName}-ECSCluster >> /etc/ecs/ecs.config
echo ECS_INSTANCE_ATTRIBUTES={\"target_group\":\"replica\"} >> /etc/ecs/ecs.config
# Make sure latest version of the helper scripts are installed as per recommendation:
# https://github.com/awsdocs/aws-cloudformation-user-guide/blob/master/doc_source/cfn-helper-scripts-reference.md#using-the-latest-version
yum install -y aws-cfn-bootstrap wget
# Install the CloudWatch Logs agent
wget https://s3.amazonaws.com/amazoncloudwatch-agent/centos/amd64/latest/amazon-cloudwatch-agent.rpm
rpm -U ./amazon-cloudwatch-agent.rpm
/opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s
/opt/aws/bin/cfn-signal -e $? --stack ${AWS::StackName} --resource ReplicaECSAutoScalingGroup --region ${AWS::Region}
HAProxyECSAutoScalingGroup:
Type: AWS::AutoScaling::AutoScalingGroup
Properties:
VPCZoneIdentifier:
- !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.PublicSubnetOneRef, !Ref SubnetIdProp]
LaunchConfigurationName: !Ref 'HAProxyLaunchConfiguration'
MinSize: '2'
MaxSize: !Ref HAProxyMaxCount
DesiredCapacity: !Ref HAProxyDesiredCount
CreationPolicy:
ResourceSignal:
Timeout: PT15M
UpdatePolicy:
AutoScalingReplacingUpdate:
WillReplace: 'true'
HAProxyLaunchConfiguration:
Type: AWS::AutoScaling::LaunchConfiguration
Properties:
ImageId: !Ref 'ECSAMI'
SecurityGroups: [!Ref 'EcsHostSecurityGroup']
InstanceType: !Ref 'InstanceType'
IamInstanceProfile: !Ref 'EC2InstanceProfile'
KeyName: !Ref ECSKeyName
UserData:
Fn::Base64: !Sub |
#!/bin/bash -xe
echo ECS_CLUSTER=${AWS::StackName}-ECSCluster >> /etc/ecs/ecs.config
echo ECS_INSTANCE_ATTRIBUTES={\"target_group\":\"haproxy\"} >> /etc/ecs/ecs.config
# Make sure latest version of the helper scripts are installed as per recommendation:
# https://github.com/awsdocs/aws-cloudformation-user-guide/blob/master/doc_source/cfn-helper-scripts-reference.md#using-the-latest-version
yum install -y aws-cfn-bootstrap wget
# Install the CloudWatch Logs agent
wget https://s3.amazonaws.com/amazoncloudwatch-agent/centos/amd64/latest/amazon-cloudwatch-agent.rpm
rpm -U ./amazon-cloudwatch-agent.rpm
/opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s
/opt/aws/bin/cfn-signal -e $? --stack ${AWS::StackName} --resource HAProxyECSAutoScalingGroup --region ${AWS::Region}
Primary1ASG:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: !Join [ '', ['https://', !Ref TemplateBucketName, '.s3.amazonaws.com/cf-primary-asg.yml'] ]
TimeoutInMinutes: '25'
Parameters:
GerritInstanceNumber: 1
EC2AMI: !Ref ECSAMI
InstanceType: !Ref InstanceType
ECSKeyName: !Ref ECSKeyName
EnvironmentName: !Ref EnvironmentName
ECSCluster: !Ref ECSCluster
EC2SecurityGroup: !Ref EcsHostSecurityGroup
EC2InstanceProfile: !Ref EC2InstanceProfile
FileSystem: !If [CreatePrimaryEFS, !GetAtt PrimaryGitFileSystemPermanentStack.Outputs.FileSystemID, !Ref PrimaryFileSystemID ]
SubnetId: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.PublicSubnetOneRef, !Ref SubnetIdProp]
LogGroupName: !Ref AWS::StackName
PrimaryMaxCount: !Ref PrimaryMaxCount
GerritVolumeAttachMaxRetries: !Ref GerritVolumeAttachMaxRetries
GerritVolumeAttachRetryDelay: !Ref GerritVolumeAttachRetryDelay
GerritVolumeSnapshotId: !Ref GerritVolumeSnapshotId
GerritVolumeSizeInGiB: !Ref GerritVolumeSizeInGiB
TemplateBucketName: !Ref TemplateBucketName
Primary2ASG:
Type: AWS::CloudFormation::Stack
Properties:
TemplateURL: !Join [ '', ['https://', !Ref TemplateBucketName, '.s3.amazonaws.com/cf-primary-asg.yml'] ]
TimeoutInMinutes: '25'
Parameters:
GerritInstanceNumber: 2
EC2AMI: !Ref ECSAMI
InstanceType: !Ref InstanceType
ECSKeyName: !Ref ECSKeyName
EnvironmentName: !Ref EnvironmentName
ECSCluster: !Ref ECSCluster
EC2SecurityGroup: !Ref EcsHostSecurityGroup
EC2InstanceProfile: !Ref EC2InstanceProfile
FileSystem: !If [CreatePrimaryEFS, !GetAtt PrimaryGitFileSystemPermanentStack.Outputs.FileSystemID, !Ref PrimaryFileSystemID ]
SubnetId: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.PublicSubnetOneRef, !Ref SubnetIdProp]
LogGroupName: !Ref AWS::StackName
PrimaryMaxCount: !Ref PrimaryMaxCount
GerritVolumeAttachMaxRetries: !Ref GerritVolumeAttachMaxRetries
GerritVolumeAttachRetryDelay: !Ref GerritVolumeAttachRetryDelay
GerritVolumeSnapshotId: !Ref GerritVolumeSnapshotId
GerritVolumeSizeInGiB: !Ref GerritVolumeSizeInGiB
TemplateBucketName: !Ref TemplateBucketName
EC2InstanceProfile:
Type: AWS::IAM::InstanceProfile
Properties:
Path: /
Roles: [!Ref 'EC2Role']
# Role for the EC2 hosts. This allows the ECS agent on the EC2 hosts
# to communciate with the ECS control plane, as well as download the docker
# images from ECR to run on your host.
EC2Role:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Statement:
- Effect: Allow
Principal:
Service: [ec2.amazonaws.com]
Action: ['sts:AssumeRole']
Path: /
Policies:
- PolicyName: ecs-service
PolicyDocument:
Statement:
- Effect: Allow
Action:
- 'ecs:CreateCluster'
- 'ecs:DeregisterContainerInstance'
- 'ecs:DiscoverPollEndpoint'
- 'ecs:Poll'
- 'ecs:RegisterContainerInstance'
- 'ecs:StartTelemetrySession'
- 'ecs:Submit*'
- 'logs:CreateLogStream'
- 'logs:PutLogEvents'
- 'ecr:GetAuthorizationToken'
- 'ecr:BatchGetImage'
- 'ecr:GetDownloadUrlForLayer'
- 'ec2:AttachVolume'
- 'ec2:DescribeVolumes'
Resource: '*'
PrimaryGitFileSystemPermanentStack:
Type: AWS::CloudFormation::Stack
DeletionPolicy: Retain
Condition: CreatePrimaryEFS
Properties:
TemplateURL: !Join [ '', ['https://', !Ref TemplateBucketName, '.s3.amazonaws.com/cf-efs-stack.yml'] ]
TimeoutInMinutes: '25'
Parameters:
FileSystemThroughputMode: !Ref PrimaryFileSystemThroughputMode
ProvisionedThroughputInMibps: !Ref PrimaryProvisionedThroughputInMibps
PublicSubnet: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.PublicSubnetOneRef, !Ref SubnetIdProp]
SecurityGroupVPCID: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.VPCRef, !Ref VPCIdProp]
SecurityGroupCidrIp: !Ref SubnetCIDR
TagValue: "efs-for-gerrit-primaries"
ReplicaGitFileSystemPermanentStack:
Type: AWS::CloudFormation::Stack
DeletionPolicy: Retain
Condition: CreateReplicaEFS
Properties:
TemplateURL: !Join [ '', ['https://', !Ref TemplateBucketName, '.s3.amazonaws.com/cf-efs-stack.yml'] ]
TimeoutInMinutes: '25'
Parameters:
FileSystemThroughputMode: !Ref ReplicaFileSystemThroughputMode
ProvisionedThroughputInMibps: !Ref ReplicaProvisionedThroughputInMibps
PublicSubnet: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.PublicSubnetOneRef, !Ref SubnetIdProp]
SecurityGroupVPCID: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.VPCRef, !Ref VPCIdProp]
SecurityGroupCidrIp: !Ref SubnetCIDR
TagValue: "efs-for-gerrit-replicas"
ECSTaskNetworkStack:
Type: AWS::CloudFormation::Stack
DeletionPolicy: Retain
Condition: NetworkStackNeeded
Properties:
TemplateURL: !Join [ '', ['https://', !Ref TemplateBucketName, '.s3.amazonaws.com/cf-gerrit-network-stack.yml'] ]
TimeoutInMinutes: '25'
Parameters:
InternetGatewayIdProp: !Ref 'InternetGatewayIdProp'
VPCIdProp: !Ref 'VPCIdProp'
VPCCIDR: !Ref 'VPCCIDR'
SubnetIdProp: !Ref 'SubnetIdProp'
SubnetCIDR: !Ref 'SubnetCIDR'
Outputs:
ClusterName:
Description: The name of the ECS cluster
Value: !Ref 'ECSCluster'
Export:
Name: !Join [ ':', [ !Ref 'AWS::StackName', 'ClusterName' ] ]
VPCId:
Description: The ID of the VPC that this stack is deployed in
Value: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.VPCRef, !Ref VPCIdProp]
Export:
Name: !Join [ ':', [ !Ref 'AWS::StackName', 'VPCId' ] ]
PublicSubnetOne:
Description: Public subnet one
Value: !If [NetworkStackNeeded, !GetAtt ECSTaskNetworkStack.Outputs.PublicSubnetOneRef, !Ref SubnetIdProp]
Export:
Name: !Join [ ':', [ !Ref 'AWS::StackName', 'PublicSubnetOne' ] ]
ClusterArn:
Description: The ARN of the ECS cluster
Value: !GetAtt ECSCluster.Arn
Export:
Name: !Join [ ':', [ !Ref 'AWS::StackName', 'ClusterArn' ] ]
ReplicaFileSystemID:
Description: The ID of the EFS to be mounted by replicas
Value: !If [CreateReplicaEFS, !GetAtt ReplicaGitFileSystemPermanentStack.Outputs.FileSystemID, !Ref ReplicaFileSystemID ]
Export:
Name: !Join [ ':', [ !Ref 'AWS::StackName', 'ReplicaFileSystemID' ] ]