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cluster.yaml
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cluster.yaml
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---
# Copyright 2018 widdix GmbH
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
AWSTemplateFormatVersion: '2010-09-09'
Description: 'ECS: cluster, a cloudonaut.io template'
Metadata:
'AWS::CloudFormation::Interface':
ParameterGroups:
- Label:
default: 'Parent Stacks'
Parameters:
- ParentVPCStack
- ParentSSHBastionStack
- ParentAuthProxyStack
- ParentAlertStack
- ParentS3StackAccessLog
- ParentClientStack1
- ParentClientStack2
- ParentClientStack3
- Label:
default: 'EC2 Parameters'
Parameters:
- KeyName
- IAMUserSSHAccess
- SystemsManagerAccess
- ManagedPolicyArns
- Label:
default: 'Load Balancer Parameters'
Parameters:
- LoadBalancerScheme
- LoadBalancerCertificateArn
- LoadBalancerIdleTimeout
- Label:
default: 'Cluster Parameters'
Parameters:
- SubnetsReach
- InstanceType
- LogsRetentionInDays
- MaxSize
- MinSize
- DesiredCapacity
- DrainingTimeoutInSeconds
- StopContainerTimeoutInSeconds
- Label:
default: 'Cluster Scaling Parameters'
Parameters:
- ContainerMaxCPU
- ContainerMaxMemory
- ContainerShortageThreshold
- ContainerExcessThreshold
Parameters:
ParentVPCStack:
Description: 'Stack name of parent VPC stack based on vpc/vpc-*azs.yaml template.'
Type: String
ParentSSHBastionStack:
Description: 'Optional but recommended stack name of parent SSH bastion host/instance stack based on vpc/vpc-*-bastion.yaml template.'
Type: String
Default: ''
ParentAuthProxyStack:
Description: 'Optional stack name of parent auth proxy stack based on security/auth-proxy-*.yaml template.'
Type: String
Default: ''
ParentAlertStack:
Description: 'Optional but recommended stack name of parent alert stack based on operations/alert.yaml template.'
Type: String
Default: ''
ParentS3StackAccessLog:
Description: 'Optional stack name of parent s3 stack based on state/s3.yaml template (with Access set to ElbAccessLogWrite) to store access logs.'
Type: String
Default: ''
ParentClientStack1:
Description: 'Optional stack name of parent Client Security Group stack based on state/client-sg.yaml template to allow network access from the cluster to whatever uses the client security group.'
Type: String
Default: ''
ParentClientStack2:
Description: 'Optional stack name of parent Client Security Group stack based on state/client-sg.yaml template to allow network access from the cluster to whatever uses the client security group.'
Type: String
Default: ''
ParentClientStack3:
Description: 'Optional stack name of parent Client Security Group stack based on state/client-sg.yaml template to allow network access from the cluster to whatever uses the client security group.'
Type: String
Default: ''
KeyName:
Description: 'Optional key pair of the ec2-user to establish a SSH connection to the EC2 instances of the ECS cluster.'
Type: String
Default: ''
IAMUserSSHAccess:
Description: 'Synchronize public keys of IAM users to enable personalized SSH access (Doc: https://cloudonaut.io/manage-aws-ec2-ssh-access-with-iam/).'
Type: String
Default: false
AllowedValues:
- true
- false
SystemsManagerAccess:
Description: 'Enable AWS Systems Manager agent and authorization.'
Type: String
Default: true
AllowedValues:
- true
- false
ManagedPolicyArns:
Description: 'Optional comma-delimited list of IAM managed policy ARNs to attach to the instance''s IAM role'
Type: String
Default: ''
SubnetsReach:
Description: 'Should the cluster have direct access to the Internet or do you prefer private subnets with NAT?'
Type: String
Default: Public
AllowedValues:
- Public
- Private
LoadBalancerScheme:
Description: 'Indicates whether the load balancer in front of the ECS cluster is internet-facing or internal.'
Type: String
Default: 'internet-facing'
AllowedValues:
- 'internet-facing'
- internal
LoadBalancerCertificateArn:
Description: 'Optional Amazon Resource Name (ARN) of the certificate to associate with the load balancer.'
Type: String
Default: ''
LoadBalancerIdleTimeout:
Description: 'The idle timeout value, in seconds.'
Type: Number
Default: 60
MinValue: 1
MaxValue: 4000
InstanceType:
Description: 'The instance type of the EC2 instances of the ECS cluster.'
Type: String
Default: 't2.micro'
LogsRetentionInDays:
Description: 'Specifies the number of days you want to retain log events in the specified log group.'
Type: Number
Default: 14
AllowedValues: [1, 3, 5, 7, 14, 30, 60, 90, 120, 150, 180, 365, 400, 545, 731, 1827, 3653]
MaxSize:
Description: 'The maximum size of the Auto Scaling group.'
Type: Number
Default: 4
ConstraintDescription: 'Must be >= 1'
MinValue: 1
MinSize:
Description: 'The minimum size of the Auto Scaling group.'
Type: Number
Default: 2
ConstraintDescription: 'Must be >= 1'
MinValue: 1
DesiredCapacity:
Description: 'Deprecated in v9, will be removed in v11, use `MinSize` instead!'
Type: Number
Default: 2
ConstraintDescription: 'Must be >= 1'
MinValue: 1
DrainingTimeoutInSeconds:
Description: 'Maximum time in seconds an EC2 instance waits when terminating until all containers are moved to another EC2 instance (draining).'
Type: Number
Default: 600 # 10 minutes
ConstraintDescription: 'Must be in the range [60-86400]'
MinValue: 60
MaxValue: 86400 # 24 hours
StopContainerTimeoutInSeconds:
Description: 'Time in seconds the ECS agent waits before killing a stopped container (see ECS_CONTAINER_STOP_TIMEOUT).'
Type: Number
Default: 30
ConstraintDescription: 'Must be in the range [30-3600]'
MinValue: 30
MaxValue: 3600
ContainerMaxCPU:
Description: 'The maximum number of cpu reservation per container that you plan to run on this cluster. A container instance has 1,024 CPU units for every CPU core.'
Type: Number
Default: 128
ContainerMaxMemory:
Description: 'The maximum number of memory reservation (in MB) per container that you plan to run on this cluster.'
Type: Number
Default: 128
ContainerShortageThreshold:
Description: 'Scale up if free cluster capacity <= containers (based on ContainerMaxCPU and ContainerMaxMemory settings)'
Type: Number
Default: 2
MinValue: 0
ConstraintDescription: 'Must be >= 0'
ContainerExcessThreshold:
Description: 'Scale down if free cluster capacity >= containers (based on ContainerMaxCPU and ContainerMaxMemory settings)'
Type: Number
Default: 10
MinValue: 2
ConstraintDescription: 'Must be >= 2'
Mappings:
RegionMap:
'eu-north-1':
ECSAMI: 'ami-059aa04f0c253ad6b'
'ap-south-1':
ECSAMI: 'ami-0a8bf4e187339e2c1'
'eu-west-3':
ECSAMI: 'ami-0d260f3e5ccd06043'
'eu-west-2':
ECSAMI: 'ami-0de1dc478496a9e9b'
'eu-west-1':
ECSAMI: 'ami-0ae254c8a2d3346a7'
'ap-northeast-2':
ECSAMI: 'ami-0accbb5aa909be7bf'
'ap-northeast-1':
ECSAMI: 'ami-04a735b489d2a0320'
'sa-east-1':
ECSAMI: 'ami-038707d64e5b8e7ba'
'ca-central-1':
ECSAMI: 'ami-01c07ee95e77abba8'
'ap-east-1':
ECSAMI: 'ami-02252d984c7e3595d'
'ap-southeast-1':
ECSAMI: 'ami-05c6d22d98f97471c'
'ap-southeast-2':
ECSAMI: 'ami-039bb4c3a7946ce19'
'eu-central-1':
ECSAMI: 'ami-0650e7d86452db33b'
'us-east-1':
ECSAMI: 'ami-0fac5486e4cff37f4'
'us-east-2':
ECSAMI: 'ami-0dca97e7cde7be3d5'
'us-west-1':
ECSAMI: 'ami-0c6e63b58aac1048e'
'us-west-2':
ECSAMI: 'ami-0e5e051fd0b505db6'
Conditions:
HasKeyName: !Not [!Equals [!Ref KeyName, '']]
HasIAMUserSSHAccess: !Equals [!Ref IAMUserSSHAccess, 'true']
HasSystemsManagerAccess: !Equals [!Ref SystemsManagerAccess, 'true']
HasSSHBastionSecurityGroup: !Not [!Equals [!Ref ParentSSHBastionStack, '']]
HasNotSSHBastionSecurityGroup: !Equals [!Ref ParentSSHBastionStack, '']
HasAuthProxySecurityGroup: !Not [!Equals [!Ref ParentAuthProxyStack, '']]
HasNotAuthProxySecurityGroup: !Equals [!Ref ParentAuthProxyStack, '']
HasLoadBalancerSchemeInternal: !Equals [!Ref LoadBalancerScheme, 'internal']
HasLoadBalancerCertificateArn: !Not [!Equals [!Ref LoadBalancerCertificateArn, '']]
HasAuthProxySecurityGroupAndLoadBalancerCertificateArn: !And [!Condition HasAuthProxySecurityGroup, !Condition HasLoadBalancerCertificateArn]
HasNotAuthProxySecurityGroupAndLoadBalancerCertificateArn: !And [!Condition HasNotAuthProxySecurityGroup, !Condition HasLoadBalancerCertificateArn]
HasAlertTopic: !Not [!Equals [!Ref ParentAlertStack, '']]
HasS3Bucket: !Not [!Equals [!Ref ParentS3StackAccessLog, '']]
HasClientSecurityGroup1: !Not [!Equals [!Ref ParentClientStack1, '']]
HasClientSecurityGroup2: !Not [!Equals [!Ref ParentClientStack2, '']]
HasClientSecurityGroup3: !Not [!Equals [!Ref ParentClientStack3, '']]
HasManagedPolicyArns: !Not [!Equals [!Ref ManagedPolicyArns, '']]
Resources:
Cluster:
Type: 'AWS::ECS::Cluster'
Properties: {}
LogGroup:
Type: 'AWS::Logs::LogGroup'
Properties:
RetentionInDays: !Ref LogsRetentionInDays
InstanceProfile:
Type: 'AWS::IAM::InstanceProfile'
Properties:
Roles:
- !Ref Role
Role:
Type: 'AWS::IAM::Role'
Properties:
AssumeRolePolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Principal:
Service: 'ec2.amazonaws.com'
Action: 'sts:AssumeRole'
ManagedPolicyArns: !If [HasManagedPolicyArns, !Split [',', !Ref ManagedPolicyArns], !Ref 'AWS::NoValue']
Policies:
- !If
- HasSystemsManagerAccess
- PolicyName: ssm
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- 'ssmmessages:*' # SSM Agent by https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-setting-up-messageAPIs.html
- 'ssm:UpdateInstanceInformation' # SSM agent by https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-setting-up-messageAPIs.html
- 'ec2messages:*' # SSM Session Manager by https://docs.aws.amazon.com/systems-manager/latest/userguide/systems-manager-setting-up-messageAPIs.html
Resource: '*'
- !Ref 'AWS::NoValue'
- PolicyName: ecs
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- 'ecs:DiscoverPollEndpoint'
Resource: '*'
- PolicyName: ecs-cluster
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- 'ecs:RegisterContainerInstance'
- 'ecs:SubmitContainerStateChange'
- 'ecs:SubmitTaskStateChange'
- 'ecs:ListContainerInstances'
Resource: !Sub 'arn:aws:ecs:${AWS::Region}:${AWS::AccountId}:cluster/${Cluster}'
- PolicyName: ecs-cluster-instance
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- 'ecs:Poll'
- 'ecs:StartTelemetrySession'
- 'ecs:UpdateContainerInstancesState'
- 'ecs:ListTasks'
- 'ecs:DescribeContainerInstances'
Resource: !Sub 'arn:aws:ecs:${AWS::Region}:${AWS::AccountId}:container-instance/*'
Condition:
'StringEquals':
'ecs:cluster':
!Sub 'arn:aws:ecs:${AWS::Region}:${AWS::AccountId}:cluster/${Cluster}'
- PolicyName: ecr
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- 'ecr:GetAuthorizationToken'
- 'ecr:BatchCheckLayerAvailability'
- 'ecr:GetDownloadUrlForLayer'
- 'ecr:BatchGetImage'
Resource: '*'
- PolicyName: logs
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- 'logs:CreateLogGroup'
- 'logs:CreateLogStream'
- 'logs:PutLogEvents'
- 'logs:DescribeLogStreams'
Resource: !GetAtt 'LogGroup.Arn'
IAMPolicySSHAccess:
Type: 'AWS::IAM::Policy'
Condition: HasIAMUserSSHAccess
Properties:
Roles:
- !Ref Role
PolicyName: 'iam-ssh'
PolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Action:
- 'iam:ListUsers'
Resource:
- '*'
- Effect: Allow
Action:
- 'iam:ListSSHPublicKeys'
- 'iam:GetSSHPublicKey'
Resource:
- !Sub 'arn:aws:iam::${AWS::AccountId}:user/*'
ALBSecurityGroup:
Type: 'AWS::EC2::SecurityGroup'
Properties:
GroupDescription: 'ecs-cluster-alb'
VpcId: {'Fn::ImportValue': !Sub '${ParentVPCStack}-VPC'}
ALBSecurityGroupInHttpWorld:
Type: 'AWS::EC2::SecurityGroupIngress'
Condition: HasNotAuthProxySecurityGroup
Properties:
GroupId: !Ref ALBSecurityGroup
IpProtocol: tcp
FromPort: 80
ToPort: 80
CidrIp: '0.0.0.0/0'
ALBSecurityGroupInHttpsWorld:
Type: 'AWS::EC2::SecurityGroupIngress'
Condition: HasNotAuthProxySecurityGroupAndLoadBalancerCertificateArn
Properties:
GroupId: !Ref ALBSecurityGroup
IpProtocol: tcp
FromPort: 443
ToPort: 443
CidrIp: '0.0.0.0/0'
ALBSecurityGroupInHttpAuthProxy:
Type: 'AWS::EC2::SecurityGroupIngress'
Condition: HasAuthProxySecurityGroup
Properties:
GroupId: !Ref ALBSecurityGroup
IpProtocol: tcp
FromPort: 80
ToPort: 80
SourceSecurityGroupId: {'Fn::ImportValue': !Sub '${ParentAuthProxyStack}-SecurityGroup'}
ALBSecurityGroupInHttpsAuthProxy:
Type: 'AWS::EC2::SecurityGroupIngress'
Condition: HasAuthProxySecurityGroupAndLoadBalancerCertificateArn
Properties:
GroupId: !Ref ALBSecurityGroup
IpProtocol: tcp
FromPort: 443
ToPort: 443
SourceSecurityGroupId: {'Fn::ImportValue': !Sub '${ParentAuthProxyStack}-SecurityGroup'}
SecurityGroup:
Type: 'AWS::EC2::SecurityGroup'
Properties:
GroupDescription: 'ecs-cluster'
VpcId: {'Fn::ImportValue': !Sub '${ParentVPCStack}-VPC'}
SecurityGroupIngress:
- SourceSecurityGroupId: !Ref ALBSecurityGroup
FromPort: 0
ToPort: 65535
IpProtocol: tcp
SecurityGroupInSSHBastion:
Type: 'AWS::EC2::SecurityGroupIngress'
Condition: HasSSHBastionSecurityGroup
Properties:
GroupId: !Ref SecurityGroup
IpProtocol: tcp
FromPort: 22
ToPort: 22
SourceSecurityGroupId: {'Fn::ImportValue': !Sub '${ParentSSHBastionStack}-SecurityGroup'}
SecurityGroupInSSHWorld:
Type: 'AWS::EC2::SecurityGroupIngress'
Condition: HasNotSSHBastionSecurityGroup
Properties:
GroupId: !Ref SecurityGroup
IpProtocol: tcp
FromPort: 22
ToPort: 22
CidrIp: '0.0.0.0/0'
HTTPCodeELB5XXTooHighAlarm:
Condition: HasAlertTopic
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Application load balancer returns 5XX HTTP status codes'
Namespace: 'AWS/ApplicationELB'
MetricName: HTTPCode_ELB_5XX_Count
Statistic: Sum
Period: 60
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 0
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
Dimensions:
- Name: LoadBalancer
Value: !GetAtt 'LoadBalancer.LoadBalancerFullName'
HTTPCodeTarget5XXTooHighAlarm:
Condition: HasAlertTopic
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Application load balancer receives 5XX HTTP status codes from targets'
Namespace: 'AWS/ApplicationELB'
MetricName: HTTPCode_Target_5XX_Count
Statistic: Sum
Period: 60
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 0
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
Dimensions:
- Name: LoadBalancer
Value: !GetAtt 'LoadBalancer.LoadBalancerFullName'
- Name: TargetGroup
Value: !GetAtt 'DefaultTargetGroup.TargetGroupFullName'
RejectedConnectionCountTooHighAlarm:
Condition: HasAlertTopic
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Application load balancer rejected connections because the load balancer had reached its maximum number of connections'
Namespace: 'AWS/ApplicationELB'
MetricName: RejectedConnectionCount
Statistic: Sum
Period: 60
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 0
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
Dimensions:
- Name: LoadBalancer
Value: !GetAtt 'LoadBalancer.LoadBalancerFullName'
TargetConnectionErrorCountTooHighAlarm:
Condition: HasAlertTopic
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Application load balancer could not connect to targets'
Namespace: 'AWS/ApplicationELB'
MetricName: TargetConnectionErrorCount
Statistic: Sum
Period: 60
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 0
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
Dimensions:
- Name: LoadBalancer
Value: !GetAtt 'LoadBalancer.LoadBalancerFullName'
- Name: TargetGroup
Value: !GetAtt 'DefaultTargetGroup.TargetGroupFullName'
LoadBalancer: # not monitored, but DefaultTargetGroup is monitored!
Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
Properties:
LoadBalancerAttributes:
- Key: 'idle_timeout.timeout_seconds'
Value: !Ref LoadBalancerIdleTimeout
- Key: 'routing.http2.enabled'
Value: 'true'
- Key: 'access_logs.s3.enabled'
Value: !If [HasS3Bucket, 'true', 'false']
- !If [HasS3Bucket, {Key: 'access_logs.s3.prefix', Value: !Ref 'AWS::StackName'}, !Ref 'AWS::NoValue']
- !If [HasS3Bucket, {Key: 'access_logs.s3.bucket', Value: {'Fn::ImportValue': !Sub '${ParentS3StackAccessLog}-BucketName'}}, !Ref 'AWS::NoValue']
Scheme: !Ref LoadBalancerScheme
SecurityGroups:
- !Ref ALBSecurityGroup
Subnets: !If
- HasLoadBalancerSchemeInternal
- !Split [',', {'Fn::ImportValue': !Sub '${ParentVPCStack}-SubnetsPrivate'}]
- !Split [',', {'Fn::ImportValue': !Sub '${ParentVPCStack}-SubnetsPublic'}]
DefaultTargetGroup: # this is used as the fall-back target group and is used to health checking the ECS agent. Services use their own ListenerRules to accept traffic based on path prefixes.
Type: 'AWS::ElasticLoadBalancingV2::TargetGroup'
Properties:
HealthCheckIntervalSeconds: 15
HealthCheckPort: '51678'
HealthCheckPath: '/'
HealthCheckProtocol: HTTP
HealthCheckTimeoutSeconds: 10
HealthyThresholdCount: 2
UnhealthyThresholdCount: 2
Matcher:
HttpCode: '200-299'
Port: 80 # port 80 is a reserved port that is never used by the agent, so we are safe to use it here
Protocol: HTTP
VpcId: {'Fn::ImportValue': !Sub '${ParentVPCStack}-VPC'}
TargetGroupAttributes:
- Key: 'deregistration_delay.timeout_seconds'
Value: '0'
HttpListener:
Type: 'AWS::ElasticLoadBalancingV2::Listener'
Properties:
DefaultActions:
- TargetGroupArn: !Ref DefaultTargetGroup
Type: forward
LoadBalancerArn: !Ref LoadBalancer
Port: 80
Protocol: HTTP
HttpsListener:
Type: 'AWS::ElasticLoadBalancingV2::Listener'
Condition: HasLoadBalancerCertificateArn
Properties:
Certificates:
- CertificateArn: !Ref LoadBalancerCertificateArn
DefaultActions:
- TargetGroupArn: !Ref DefaultTargetGroup
Type: forward
LoadBalancerArn: !Ref LoadBalancer
Port: 443
Protocol: HTTPS
LaunchConfiguration:
Type: 'AWS::AutoScaling::LaunchConfiguration'
Metadata:
'AWS::CloudFormation::Init':
configSets:
default: !If [HasIAMUserSSHAccess, [awslogs, ssh-access, install], [awslogs, install]]
awslogs:
packages:
yum:
awslogs: []
files:
'/etc/awslogs/awscli.conf':
content: !Sub |
[default]
region = ${AWS::Region}
[plugins]
cwlogs = cwlogs
mode: '000644'
owner: root
group: root
'/etc/awslogs/awslogs.conf':
content: !Sub |
[general]
state_file = /var/lib/awslogs/agent-state
[/var/log/amazon/ssm/amazon-ssm-agent.log]
datetime_format = %Y-%m-%d %H:%M:%S
file = /var/log/amazon/ssm/amazon-ssm-agent.log
log_stream_name = {instance_id}/var/log/amazon/ssm/amazon-ssm-agent.log
log_group_name = ${LogGroup}
[/var/log/amazon/ssm/errors.log]
datetime_format = %Y-%m-%d %H:%M:%S
file = /var/log/amazon/ssm/errors.log
log_stream_name = {instance_id}/var/log/amazon/ssm/errors.log
log_group_name = ${LogGroup}
[/var/log/audit/audit.log]
file = /var/log/audit/audit.log
log_stream_name = {instance_id}/var/log/audit/audit.log
log_group_name = ${LogGroup}
[/var/log/awslogs.log]
datetime_format = %Y-%m-%d %H:%M:%S
file = /var/log/awslogs.log
log_stream_name = {instance_id}/var/log/awslogs.log
log_group_name = ${LogGroup}
[/var/log/boot.log]
file = /var/log/boot.log
log_stream_name = {instance_id}/var/log/boot.log
log_group_name = ${LogGroup}
[/var/log/cfn-hup.log]
datetime_format = %Y-%m-%d %H:%M:%S
file = /var/log/cfn-hup.log
log_stream_name = {instance_id}/var/log/cfn-hup.log
log_group_name = ${LogGroup}
[/var/log/cfn-init-cmd.log]
datetime_format = %Y-%m-%d %H:%M:%S
file = /var/log/cfn-init-cmd.log
log_stream_name = {instance_id}/var/log/cfn-init-cmd.log
log_group_name = ${LogGroup}
[/var/log/cfn-init.log]
datetime_format = %Y-%m-%d %H:%M:%S
file = /var/log/cfn-init.log
log_stream_name = {instance_id}/var/log/cfn-init.log
log_group_name = ${LogGroup}
[/var/log/cfn-wire.log]
datetime_format = %Y-%m-%d %H:%M:%S
file = /var/log/cfn-wire.log
log_stream_name = {instance_id}/var/log/cfn-wire.log
log_group_name = ${LogGroup}
[/var/log/cloud-init-output.log]
file = /var/log/cloud-init-output.log
log_stream_name = {instance_id}/var/log/cloud-init-output.log
log_group_name = ${LogGroup}
[/var/log/cloud-init.log]
datetime_format = %b %d %H:%M:%S
file = /var/log/cloud-init.log
log_stream_name = {instance_id}/var/log/cloud-init.log
log_group_name = ${LogGroup}
[/var/log/cron]
datetime_format = %b %d %H:%M:%S
file = /var/log/cron
log_stream_name = {instance_id}/var/log/cron
log_group_name = ${LogGroup}
[/var/log/dmesg]
file = /var/log/dmesg
log_stream_name = {instance_id}/var/log/dmesg
log_group_name = ${LogGroup}
[/var/log/grubby_prune_debug]
file = /var/log/grubby_prune_debug
log_stream_name = {instance_id}/var/log/grubby_prune_debug
log_group_name = ${LogGroup}
[/var/log/maillog]
datetime_format = %b %d %H:%M:%S
file = /var/log/maillog
log_stream_name = {instance_id}/var/log/maillog
log_group_name = ${LogGroup}
[/var/log/messages]
datetime_format = %b %d %H:%M:%S
file = /var/log/messages
log_stream_name = {instance_id}/var/log/messages
log_group_name = ${LogGroup}
[/var/log/secure]
datetime_format = %b %d %H:%M:%S
file = /var/log/secure
log_stream_name = {instance_id}/var/log/secure
log_group_name = ${LogGroup}
[/var/log/yum.log]
datetime_format = %b %d %H:%M:%S
file = /var/log/yum.log
log_stream_name = {instance_id}/var/log/yum.log
log_group_name = ${LogGroup}
mode: '000644'
owner: root
group: root
'/etc/awslogs/config/ecs.conf':
content: !Sub |
[/var/log/ecs/ecs-init.log]
file = /var/log/ecs/ecs-init.log
log_stream_name = {instance_id}/var/log/ecs/ecs-init.log
log_group_name = ${LogGroup}
datetime_format = %Y-%m-%dT%H:%M:%SZ
[/var/log/ecs/ecs-agent.log]
file = /var/log/ecs/ecs-agent.log.*
log_stream_name = {instance_id}/var/log/ecs/ecs-agent.log
log_group_name = ${LogGroup}
datetime_format = %Y-%m-%dT%H:%M:%SZ
mode: '000644'
owner: root
group: root
services:
sysvinit:
awslogsd:
enabled: true
ensureRunning: true
packages:
yum:
- awslogs
files:
- '/etc/awslogs/awslogs.conf'
- '/etc/awslogs/awscli.conf'
- '/etc/awslogs/config/ecs.conf'
ssh-access:
files:
'/opt/authorized_keys_command.sh':
content: |
#!/bin/bash -e
if [ -z "$1" ]; then
exit 1
fi
UnsaveUserName="$1"
UnsaveUserName=${UnsaveUserName//".plus."/"+"}
UnsaveUserName=${UnsaveUserName//".equal."/"="}
UnsaveUserName=${UnsaveUserName//".comma."/","}
UnsaveUserName=${UnsaveUserName//".at."/"@"}
aws iam list-ssh-public-keys --user-name "$UnsaveUserName" --query "SSHPublicKeys[?Status == 'Active'].[SSHPublicKeyId]" --output text | while read -r KeyId; do
aws iam get-ssh-public-key --user-name "$UnsaveUserName" --ssh-public-key-id "$KeyId" --encoding SSH --query "SSHPublicKey.SSHPublicKeyBody" --output text
done
mode: '000755'
owner: root
group: root
'/opt/import_users.sh':
content: |
#!/bin/bash -e
aws iam list-users --query "Users[].[UserName]" --output text | while read User; do
SaveUserName="$User"
SaveUserName=${SaveUserName//"+"/".plus."}
SaveUserName=${SaveUserName//"="/".equal."}
SaveUserName=${SaveUserName//","/".comma."}
SaveUserName=${SaveUserName//"@"/".at."}
if [ "${#SaveUserName}" -le "32" ]; then
if ! id -u "$SaveUserName" >/dev/null 2>&1; then
#sudo will read each file in /etc/sudoers.d, skipping file names that end in ‘~’ or contain a ‘.’ character to avoid causing problems with package manager or editor temporary/backup files.
SaveUserFileName=$(echo "$SaveUserName" | tr "." " ")
/usr/sbin/useradd "$SaveUserName"
echo "$SaveUserName ALL=(ALL) NOPASSWD:ALL" > "/etc/sudoers.d/$SaveUserFileName"
fi
else
echo "Can not import IAM user ${SaveUserName}. User name is longer than 32 characters."
fi
done
mode: '000755'
owner: root
group: root
'/etc/cron.d/import_users':
content: |
*/10 * * * * root /opt/import_users.sh
mode: '000644'
owner: root
group: root
commands:
'a_configure_sshd_command':
command: 'sed -e ''/AuthorizedKeysCommand / s/^#*/#/'' -i /etc/ssh/sshd_config; echo -e ''\nAuthorizedKeysCommand /opt/authorized_keys_command.sh'' >> /etc/ssh/sshd_config'
test: '! grep -q ''^AuthorizedKeysCommand /opt/authorized_keys_command.sh'' /etc/ssh/sshd_config'
'b_configure_sshd_commanduser':
command: 'sed -e ''/AuthorizedKeysCommandUser / s/^#*/#/'' -i /etc/ssh/sshd_config; echo -e ''\nAuthorizedKeysCommandUser nobody'' >> /etc/ssh/sshd_config'
test: '! grep -q ''^AuthorizedKeysCommandUser nobody'' /etc/ssh/sshd_config'
'c_import_users':
command: './import_users.sh'
cwd: '/opt'
services:
sysvinit:
sshd:
enabled: true
ensureRunning: true
commands:
- 'a_configure_sshd_command'
- 'b_configure_sshd_commanduser'
install:
packages:
yum:
amazon-ssm-agent: []
files:
'/etc/cfn/cfn-hup.conf':
content: !Sub |
[main]
stack=${AWS::StackId}
region=${AWS::Region}
interval=1
mode: '000400'
owner: root
group: root
'/etc/cfn/hooks.d/cfn-auto-reloader.conf':
content: !Sub |
[cfn-auto-reloader-hook]
triggers=post.update
path=Resources.LaunchConfiguration.Metadata.AWS::CloudFormation::Init
action=/opt/aws/bin/cfn-init --verbose --stack=${AWS::StackName} --region=${AWS::Region} --resource=LaunchConfiguration
runas=root
services:
sysvinit:
cfn-hup:
enabled: true
ensureRunning: true
files:
- '/etc/cfn/cfn-hup.conf'
- '/etc/cfn/hooks.d/cfn-auto-reloader.conf'
amazon-ssm-agent:
enabled: !If [HasSystemsManagerAccess, true, false]
ensureRunning: !If [HasSystemsManagerAccess, true, false]
packages:
yum:
- amazon-ssm-agent
Properties:
ImageId: !FindInMap [RegionMap, !Ref 'AWS::Region', ECSAMI]
IamInstanceProfile: !Ref InstanceProfile
InstanceType: !Ref InstanceType
SecurityGroups:
- !Ref SecurityGroup
- !If [HasClientSecurityGroup1, {'Fn::ImportValue': !Sub '${ParentClientStack1}-ClientSecurityGroup'}, !Ref 'AWS::NoValue']
- !If [HasClientSecurityGroup2, {'Fn::ImportValue': !Sub '${ParentClientStack2}-ClientSecurityGroup'}, !Ref 'AWS::NoValue']
- !If [HasClientSecurityGroup3, {'Fn::ImportValue': !Sub '${ParentClientStack3}-ClientSecurityGroup'}, !Ref 'AWS::NoValue']
KeyName: !If [HasKeyName, !Ref KeyName, !Ref 'AWS::NoValue']
UserData:
'Fn::Base64': !Sub |
#!/bin/bash -ex
trap '/opt/aws/bin/cfn-signal -e 1 --stack ${AWS::StackName} --resource AutoScalingGroup --region ${AWS::Region}' ERR
echo "ECS_CLUSTER=${Cluster}" >> /etc/ecs/ecs.config
echo "ECS_CONTAINER_STOP_TIMEOUT=${StopContainerTimeoutInSeconds}s" >> /etc/ecs/ecs.config
yum install -y aws-cfn-bootstrap
/opt/aws/bin/cfn-init -v --stack ${AWS::StackName} --resource LaunchConfiguration --region ${AWS::Region}
/opt/aws/bin/cfn-signal -e 0 --stack ${AWS::StackName} --resource AutoScalingGroup --region ${AWS::Region}
AutoScalingGroup:
Type: 'AWS::AutoScaling::AutoScalingGroup'
Properties:
LaunchConfigurationName: !Ref LaunchConfiguration
MinSize: !Ref MinSize
MaxSize: !Ref MaxSize
Cooldown: '120'
HealthCheckGracePeriod: 300
HealthCheckType: ELB
TargetGroupARNs:
- !Ref DefaultTargetGroup
NotificationConfigurations: !If
- HasAlertTopic
- - NotificationTypes:
- 'autoscaling:EC2_INSTANCE_LAUNCH_ERROR'
- 'autoscaling:EC2_INSTANCE_TERMINATE_ERROR'
TopicARN: {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
- []
VPCZoneIdentifier: !Split [',', {'Fn::ImportValue': !Sub '${ParentVPCStack}-Subnets${SubnetsReach}'}]
Tags:
- Key: Name
Value: 'ecs-cluster'
PropagateAtLaunch: true
CreationPolicy:
ResourceSignal:
Timeout: PT15M
UpdatePolicy:
AutoScalingRollingUpdate:
PauseTime: PT15M
SuspendProcesses:
- HealthCheck
- ReplaceUnhealthy
- AZRebalance
- AlarmNotification
- ScheduledActions
WaitOnResourceSignals: true
CPUTooHighAlarm:
Condition: HasAlertTopic
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Average CPU utilization over last 10 minutes higher than 80%'
Namespace: 'AWS/EC2'
MetricName: CPUUtilization
Statistic: Average
Period: 600
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 80
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
Dimensions:
- Name: AutoScalingGroupName
Value: !Ref AutoScalingGroup
AutoScalingGroupLifecycleHookQueue:
Type: 'AWS::SQS::Queue'
Properties:
QueueName: !Sub '${AWS::StackName}-lifecycle-hook'
VisibilityTimeout: 60
RedrivePolicy:
deadLetterTargetArn: !GetAtt 'AutoScalingGroupLifecycleHookDeadLetterQueue.Arn'
maxReceiveCount: 5
AutoScalingGroupLifecycleHookQueueTooHighAlarm:
Condition: HasAlertTopic
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Queue contains messages older than 10 minutes, messages are not consumed'
Namespace: 'AWS/SQS'
MetricName: ApproximateAgeOfOldestMessage
Statistic: Maximum
Period: 60
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 600
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
Dimensions:
- Name: QueueName
Value: !GetAtt 'AutoScalingGroupLifecycleHookQueue.QueueName'
AutoScalingGroupLifecycleHookDeadLetterQueue:
Type: 'AWS::SQS::Queue'
Properties:
QueueName: !Sub '${AWS::StackName}-lifecycle-hook-dlq'
AutoScalingGroupLifecycleHookDeadLetterQueueTooHighAlarm:
Condition: HasAlertTopic
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Dead letter queue contains messages, message processing failed'
Namespace: 'AWS/SQS'
MetricName: ApproximateNumberOfMessagesVisible
Statistic: Sum
Period: 60
EvaluationPeriods: 1
ComparisonOperator: GreaterThanThreshold
Threshold: 0
AlarmActions:
- {'Fn::ImportValue': !Sub '${ParentAlertStack}-TopicARN'}
Dimensions:
- Name: QueueName
Value: !GetAtt 'AutoScalingGroupLifecycleHookDeadLetterQueue.QueueName'
AutoScalingGroupLifecycleHookIAMRole:
Type: 'AWS::IAM::Role'
Properties:
AssumeRolePolicyDocument:
Version: '2012-10-17'
Statement:
- Effect: Allow
Principal:
Service: 'autoscaling.amazonaws.com'
Action: 'sts:AssumeRole'
Policies:
- PolicyName: sqs
PolicyDocument:
Version: '2012-10-17'
Statement:
- Sid: write
Effect: Allow
Action:
- 'sqs:SendMessage'
- 'sqs:GetQueueUrl'
Resource: !GetAtt 'AutoScalingGroupLifecycleHookQueue.Arn'
AutoScalingGroupTerminatingLifecycleHook:
Type: 'AWS::AutoScaling::LifecycleHook'
Properties:
HeartbeatTimeout: 600
DefaultResult: CONTINUE
AutoScalingGroupName: !Ref AutoScalingGroup
LifecycleTransition: 'autoscaling:EC2_INSTANCE_TERMINATING'
NotificationTargetARN: !GetAtt 'AutoScalingGroupLifecycleHookQueue.Arn'
RoleARN: !GetAtt 'AutoScalingGroupLifecycleHookIAMRole.Arn'
ScaleUpPolicy:
Type: 'AWS::AutoScaling::ScalingPolicy'
Properties:
AutoScalingGroupName: !Ref AutoScalingGroup
PolicyType: StepScaling
AdjustmentType: PercentChangeInCapacity
MinAdjustmentMagnitude: 1
StepAdjustments:
- MetricIntervalUpperBound: 0.0
ScalingAdjustment: 25
ScaleDownPolicy:
Type: 'AWS::AutoScaling::ScalingPolicy'
Properties:
AutoScalingGroupName: !Ref AutoScalingGroup
PolicyType: StepScaling
AdjustmentType: PercentChangeInCapacity
MinAdjustmentMagnitude: 1
StepAdjustments:
- MetricIntervalLowerBound: 0.0
ScalingAdjustment: -25
ContainerInstancesShortageAlarm:
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Cluster is running out of container instances'
Namespace: !Ref 'AWS::StackName'
Dimensions:
- Name: ClusterName
Value: !Ref Cluster
MetricName: SchedulableContainers
ComparisonOperator: LessThanOrEqualToThreshold
Statistic: Minimum # special rule because we scale on reservations and not utilization
Period: 60
EvaluationPeriods: 1
Threshold: !Ref ContainerShortageThreshold
AlarmActions:
- !Ref ScaleUpPolicy
ContainerInstancesExcessAlarm:
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: 'Cluster is wasting container instances'
Namespace: !Ref 'AWS::StackName'
Dimensions:
- Name: ClusterName