def get_instance_metadata(instance_name): return autoscaling.Metadata( cfn.Init({ 'config': cfn.InitConfig( packages={'yum': { 'httpd': [] }}, files=cfn.InitFiles({ '/etc/cfn/cfn-hup.conf': cfn.InitFile(content=Join('', [ '[main]\n', 'stack=', Ref('AWS::StackName'), '\n', 'region=', Ref('AWS::Region'), '\n', ]), mode='000400', owner='root', group='root'), '/etc/cfn/hooks.d/cfn-auto-reloader.conf': cfn.InitFile(content=Join('', [ '[cfn-auto-reloader-hook]\n', 'triggers=post.update\n', 'path=Resources.', instance_name, '.Metadata.AWS::CloudFormation::Init\n', 'action=/opt/aws/bin/cfn-init -v ', ' --stack=', Ref('AWS::StackName'), ' --resource=', instance_name, ' --region=', Ref('AWS::Region'), '\n', 'runas=root\n', ])) }), services={ 'sysvinit': cfn.InitServices({ 'httpd': cfn.InitService(enabled=True, ensureRunning=True), 'cfn-hup': cfn.InitService( enabled=True, ensureRunning=True, files=[ '/etc/cfn/cfn-hup.conf', '/etc/cfn/hooks.d/cfn-auto-reloader.conf' ]) }) }) }))
Metadata=autoscaling.Metadata( cloudformation.Init({ "config": cloudformation.InitConfig( files=cloudformation.InitFiles({ "/etc/rsyslog.d/20-somethin.conf": cloudformation.InitFile( source=Join( "", [ "http://", Ref(DeployBucket), ".s3.amazonaws.com/stacks/", Ref(RootStackName), "/env/etc/rsyslog.d/20-somethin.conf", ], ), mode="000644", owner="root", group="root", authentication="DeployUserAuth", ) }), services={ "sysvinit": cloudformation.InitServices({ "rsyslog": cloudformation.InitService( enabled=True, ensureRunning=True, files=["/etc/rsyslog.d/20-somethin.conf"], ) }) }, ) }), cloudformation.Authentication({ "DeployUserAuth": cloudformation.AuthenticationBlock( type="S3", accessKeyId=Ref(DeployUserAccessKey), secretKey=Ref(DeployUserSecretKey), ) }), ),
Metadata=autoscaling.Metadata( cloudformation.Init(dict( config=cloudformation.InitConfig( commands=dict( register_cluster=dict(command=Join("", [ "#!/bin/bash\n", # Register the cluster "echo ECS_CLUSTER=", Ref(cluster), " >> /etc/ecs/ecs.config\n", # Enable CloudWatch docker logging 'echo \'ECS_AVAILABLE_LOGGING_DRIVERS=', '["json-file","awslogs"]\'', " >> /etc/ecs/ecs.config\n", "yum update -y \n" ])) ), files=cloudformation.InitFiles({ "/etc/cfn/cfn-hup.conf": cloudformation.InitFile( content=Join("", [ "[main]\n", "stack=", Ref(AWS_STACK_ID), "\n", "region=", Ref(AWS_REGION), "\n", ]), mode="000400", owner="root", group="root", ), "/etc/cfn/hooks.d/cfn-auto-reloader.conf": cloudformation.InitFile( content=Join("", [ "[cfn-auto-reloader-hook]\n", "triggers=post.update\n", "path=Resources.%s." % container_instance_configuration_name, "Metadata.AWS::CloudFormation::Init\n", "action=/opt/aws/bin/cfn-init -v ", " --stack ", Ref(AWS_STACK_NAME), " --resource %s" % container_instance_configuration_name, " --region ", Ref("AWS::Region"), "\n", "runas=root\n", ]) ) }), services=dict( sysvinit=cloudformation.InitServices({ 'cfn-hup': cloudformation.InitService( enabled=True, ensureRunning=True, files=[ "/etc/cfn/cfn-hup.conf", "/etc/cfn/hooks.d/cfn-auto-reloader.conf", ] ), }) ) ) )) ),
def buildStack(bootstrap, env): t = Template() t.add_description("""\ Configures autoscaling group for hello world app""") vpcCidr = t.add_parameter( Parameter( "VPCCidr", Type="String", Description="VPC cidr (x.x.x.x/xx)", )) publicSubnet1 = t.add_parameter( Parameter( "PublicSubnet1", Type="String", Description="A public VPC subnet ID for the api app load balancer.", )) publicSubnet2 = t.add_parameter( Parameter( "PublicSubnet2", Type="String", Description="A public VPC subnet ID for the api load balancer.", )) dbName = t.add_parameter( Parameter( "DBName", Default="HelloWorldApp", Description="The database name", Type="String", MinLength="1", MaxLength="64", AllowedPattern="[a-zA-Z][a-zA-Z0-9]*", ConstraintDescription=("must begin with a letter and contain only" " alphanumeric characters."))) dbUser = t.add_parameter( Parameter( "DBUser", NoEcho=True, Description="The database admin account username", Type="String", MinLength="1", MaxLength="16", AllowedPattern="[a-zA-Z][a-zA-Z0-9]*", ConstraintDescription=("must begin with a letter and contain only" " alphanumeric characters."))) dbPassword = t.add_parameter( Parameter( "DBPassword", NoEcho=True, Description="The database admin account password", Type="String", MinLength="8", MaxLength="41", AllowedPattern="[a-zA-Z0-9]*", ConstraintDescription="must contain only alphanumeric characters.") ) dbType = t.add_parameter( Parameter( "DBType", Default="db.t2.medium", Description="Database instance class", Type="String", AllowedValues=[ "db.m5.large", "db.m5.xlarge", "db.m5.2xlarge", "db.m5.4xlarge", "db.m5.12xlarge", "db.m5.24xlarge", "db.m4.large", "db.m4.xlarge", "db.m4.2xlarge", "db.m4.4xlarge", "db.m4.10xlarge", "db.m4.16xlarge", "db.r4.large", "db.r4.xlarge", "db.r4.2xlarge", "db.r4.4xlarge", "db.r4.8xlarge", "db.r4.16xlarge", "db.x1e.xlarge", "db.x1e.2xlarge", "db.x1e.4xlarge", "db.x1e.8xlarge", "db.x1e.16xlarge", "db.x1e.32xlarge", "db.x1.16xlarge", "db.x1.32xlarge", "db.r3.large", "db.r3.xlarge", "db.r3.2xlarge", "db.r3.4xlarge", "db.r3.8xlarge", "db.t2.micro", "db.t2.small", "db.t2.medium", "db.t2.large", "db.t2.xlarge", "db.t2.2xlarge" ], ConstraintDescription="must select a valid database instance type.", )) dbAllocatedStorage = t.add_parameter( Parameter( "DBAllocatedStorage", Default="5", Description="The size of the database (Gb)", Type="Number", MinValue="5", MaxValue="1024", ConstraintDescription="must be between 5 and 1024Gb.", )) whitelistedCIDR = t.add_parameter( Parameter( "WhitelistedCIDR", Description="CIDR whitelisted to be open on public instances", Type="String", )) #### NETWORK SECTION #### vpc = t.add_resource( VPC("VPC", CidrBlock=Ref(vpcCidr), EnableDnsHostnames=True)) subnet1 = t.add_resource( Subnet("Subnet1", CidrBlock=Ref(publicSubnet1), AvailabilityZone="eu-west-1a", VpcId=Ref(vpc))) subnet2 = t.add_resource( Subnet("Subnet2", CidrBlock=Ref(publicSubnet2), AvailabilityZone="eu-west-1b", VpcId=Ref(vpc))) internetGateway = t.add_resource(InternetGateway('InternetGateway')) gatewayAttachment = t.add_resource( VPCGatewayAttachment('AttachGateway', VpcId=Ref(vpc), InternetGatewayId=Ref(internetGateway))) routeTable = t.add_resource(RouteTable('RouteTable', VpcId=Ref(vpc))) route = t.add_resource( Route( 'Route', DependsOn='AttachGateway', GatewayId=Ref('InternetGateway'), DestinationCidrBlock='0.0.0.0/0', RouteTableId=Ref(routeTable), )) subnetRouteTableAssociation = t.add_resource( SubnetRouteTableAssociation( 'SubnetRouteTableAssociation', SubnetId=Ref(subnet1), RouteTableId=Ref(routeTable), )) subnetRouteTableAssociation2 = t.add_resource( SubnetRouteTableAssociation( 'SubnetRouteTableAssociation2', SubnetId=Ref(subnet2), RouteTableId=Ref(routeTable), )) #### SECURITY GROUP #### loadBalancerSg = t.add_resource( ec2.SecurityGroup( "LoadBalancerSecurityGroup", VpcId=Ref(vpc), GroupDescription="Enable SSH access via port 22", SecurityGroupIngress=[ ec2.SecurityGroupRule( IpProtocol="tcp", FromPort="80", ToPort="80", CidrIp="0.0.0.0/0", ), ], )) instanceSg = t.add_resource( ec2.SecurityGroup( "InstanceSecurityGroup", VpcId=Ref(vpc), GroupDescription="Enable SSH access via port 22", SecurityGroupIngress=[ ec2.SecurityGroupRule( IpProtocol="tcp", FromPort="22", ToPort="22", CidrIp=Ref(whitelistedCIDR), ), ec2.SecurityGroupRule( IpProtocol="tcp", FromPort="8000", ToPort="8000", SourceSecurityGroupId=Ref(loadBalancerSg), ), ], )) rdsSg = t.add_resource( SecurityGroup("RDSSecurityGroup", GroupDescription="Security group for RDS DB Instance.", VpcId=Ref(vpc), SecurityGroupIngress=[ ec2.SecurityGroupRule( IpProtocol="tcp", FromPort="5432", ToPort="5432", SourceSecurityGroupId=Ref(instanceSg), ), ec2.SecurityGroupRule( IpProtocol="tcp", FromPort="5432", ToPort="5432", CidrIp=Ref(whitelistedCIDR), ), ])) #### DATABASE SECTION #### subnetGroup = t.add_resource( DBSubnetGroup( "SubnetGroup", DBSubnetGroupDescription= "Subnets available for the RDS DB Instance", SubnetIds=[Ref(subnet1), Ref(subnet2)], )) db = t.add_resource( DBInstance( "RDSHelloWorldApp", DBName=Join("", [Ref(dbName), env]), DBInstanceIdentifier=Join("", [Ref(dbName), env]), EnableIAMDatabaseAuthentication=True, PubliclyAccessible=True, AllocatedStorage=Ref(dbAllocatedStorage), DBInstanceClass=Ref(dbType), Engine="postgres", EngineVersion="10.4", MasterUsername=Ref(dbUser), MasterUserPassword=Ref(dbPassword), DBSubnetGroupName=Ref(subnetGroup), VPCSecurityGroups=[Ref(rdsSg)], )) t.add_output( Output("RDSConnectionString", Description="Connection string for database", Value=GetAtt("RDSHelloWorldApp", "Endpoint.Address"))) if (bootstrap): return t #### INSTANCE SECTION #### keyName = t.add_parameter( Parameter( "KeyName", Type="String", Description="Name of an existing EC2 KeyPair to enable SSH access", MinLength="1", AllowedPattern="[\x20-\x7E]*", MaxLength="255", ConstraintDescription="can contain only ASCII characters.", )) scaleCapacityMin = t.add_parameter( Parameter( "ScaleCapacityMin", Default="1", Type="String", Description="Number of api servers to run", )) scaleCapacityMax = t.add_parameter( Parameter( "ScaleCapacityMax", Default="1", Type="String", Description="Number of api servers to run", )) scaleCapacityDesired = t.add_parameter( Parameter( "ScaleCapacityDesired", Default="1", Type="String", Description="Number of api servers to run", )) amiId = t.add_parameter( Parameter( "AmiId", Type="String", Default="ami-09693313102a30b2c", Description="The AMI id for the api instances", )) instanceType = t.add_parameter( Parameter("InstanceType", Description="WebServer EC2 instance type", Type="String", Default="t2.medium", AllowedValues=[ "t2.nano", "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" ], ConstraintDescription="must be a valid EC2 instance type.")) assumeRole = t.add_resource( Role("AssumeRole", AssumeRolePolicyDocument=json.loads("""\ { "Version": "2012-10-17", "Statement": [ { "Action": "sts:AssumeRole", "Principal": { "Service": "ec2.amazonaws.com" }, "Effect": "Allow", "Sid": "" } ] }\ """))) instanceProfile = t.add_resource( InstanceProfile("InstanceProfile", Roles=[Ref(assumeRole)])) rolePolicyType = t.add_resource( PolicyType("RolePolicyType", Roles=[Ref(assumeRole)], PolicyName=Join("", ["CloudWatchHelloWorld", "-", env]), PolicyDocument=json.loads("""\ { "Version": "2012-10-17", "Statement": [ { "Action": [ "logs:CreateLogGroup", "logs:CreateLogStream", "logs:DescribeLogStreams", "logs:PutLogEvents" ], "Effect": "Allow", "Resource": [ "arn:aws:logs:*:*:*" ] } ] }\ """))) appPassword = t.add_parameter( Parameter( "AppPassword", NoEcho=True, Description="The Password for the app user", Type="String", MinLength="8", MaxLength="41", AllowedPattern="[a-zA-Z0-9]*", ConstraintDescription="must contain only alphanumeric characters.") ) launchConfig = t.add_resource( LaunchConfiguration( "LaunchConfiguration", Metadata=autoscaling.Metadata( cloudformation.Init({ "config": cloudformation.InitConfig(files=cloudformation.InitFiles({ "/home/app/environment": cloudformation.InitFile(content=Join( "", [ "SPRING_DATASOURCE_URL=", "jdbc:postgresql://", GetAtt("RDSHelloWorldApp", "Endpoint.Address"), ":5432/HelloWorldApp" + env + "?currentSchema=hello_world", "\n", "SPRING_DATASOURCE_USERNAME=app", "\n", "SPRING_DATASOURCE_PASSWORD="******"\n", "SPRING_PROFILES_ACTIVE=", env, "\n" ]), mode="000600", owner="app", group="app") }), ) }), ), UserData=Base64( Join('', [ "#!/bin/bash\n", "/opt/aws/bin/cfn-init", " --resource LaunchConfiguration", " --stack ", Ref("AWS::StackName"), " --region ", Ref("AWS::Region"), "\n", "/opt/aws/bin/cfn-signal -e $? ", " --stack ", { "Ref": "AWS::StackName" }, " --resource AutoscalingGroup ", " --region ", { "Ref": "AWS::Region" }, "\n" ])), ImageId=Ref(amiId), KeyName=Ref(keyName), IamInstanceProfile=Ref(instanceProfile), BlockDeviceMappings=[ ec2.BlockDeviceMapping(DeviceName="/dev/xvda", Ebs=ec2.EBSBlockDevice(VolumeSize="8")), ], SecurityGroups=[Ref(instanceSg)], InstanceType=Ref(instanceType), AssociatePublicIpAddress='True', )) applicationElasticLB = t.add_resource( elb.LoadBalancer("ApplicationElasticLB", Name="ApplicationElasticLB-" + env, Scheme="internet-facing", Type="application", SecurityGroups=[Ref(loadBalancerSg)], Subnets=[Ref(subnet1), Ref(subnet2)])) targetGroup = t.add_resource( elb.TargetGroup("TargetGroupHelloWorld", HealthCheckProtocol="HTTP", HealthCheckTimeoutSeconds="15", HealthyThresholdCount="5", Matcher=elb.Matcher(HttpCode="200,404"), Port="8000", Protocol="HTTP", UnhealthyThresholdCount="3", TargetGroupAttributes=[ elb.TargetGroupAttribute( Key="deregistration_delay.timeout_seconds", Value="120", ) ], VpcId=Ref(vpc))) listener = t.add_resource( elb.Listener("Listener", Port="80", Protocol="HTTP", LoadBalancerArn=Ref(applicationElasticLB), DefaultActions=[ elb.Action(Type="forward", TargetGroupArn=Ref(targetGroup)) ])) t.add_output( Output("URL", Description="URL of the sample website", Value=Join("", ["http://", GetAtt(applicationElasticLB, "DNSName")]))) autoScalingGroup = t.add_resource( AutoScalingGroup( "AutoscalingGroup", DesiredCapacity=Ref(scaleCapacityDesired), LaunchConfigurationName=Ref(launchConfig), MinSize=Ref(scaleCapacityMin), MaxSize=Ref(scaleCapacityMax), VPCZoneIdentifier=[Ref(subnet1), Ref(subnet2)], TargetGroupARNs=[Ref(targetGroup)], HealthCheckType="ELB", HealthCheckGracePeriod=360, UpdatePolicy=UpdatePolicy( AutoScalingReplacingUpdate=AutoScalingReplacingUpdate( WillReplace=True, ), AutoScalingRollingUpdate=AutoScalingRollingUpdate( PauseTime='PT5M', MinInstancesInService="1", MaxBatchSize='1', WaitOnResourceSignals=True)), CreationPolicy=CreationPolicy(ResourceSignal=ResourceSignal( Timeout="PT15M", Count=Ref(scaleCapacityDesired))))) # print(t.to_json()) return t
def _launch_config(self): return LaunchConfiguration( "LaunchConfiguration", Metadata=autoscaling.Metadata( cloudformation.Init({ "config": cloudformation.InitConfig(files=cloudformation.InitFiles({ '/etc/cfn/cfn-hup.conf': cloudformation.InitFile(content=Join( '', [ '[main]\n', 'stack=', self.ref_stack_id, '\n', 'region=', self.ref_region, '\n', ]), mode='000400', owner='root', group='root'), '/etc/cfn/hooks.d/cfn-auto-reloader.conf': cloudformation.InitFile( content=Join('', [ '[cfn-auto-reloader-hook]\n', 'triggers=post.update\n', 'path=Resources.WebServerInstance.\ Metadata.AWS::CloudFormation::Init\n', 'action=/opt/aws/bin/cfn-init -v ', ' --stack ', self.ref_stack_name, ' --resource WebServerInstance ', ' --region ', self.ref_region, '\n', 'runas=root\n', ])) }), services={ "sysvinit": cloudformation.InitServices({ "rsyslog": cloudformation. InitService( enabled=True, ensureRunning=True, files=[ '/etc/rsyslog.d/20-somethin.conf' ]) }) }) })), UserData=Base64(Join('', self.config['app_instance_user_data'])), ImageId=FindInMap("RegionMap", Ref("AWS::Region"), "AMI"), KeyName=self.config['sshkey'], IamInstanceProfile=Ref(self.instance_iam_role_instance_profile), BlockDeviceMappings=[ ec2.BlockDeviceMapping(DeviceName=self.config['device_name'], Ebs=ec2.EBSBlockDevice(VolumeSize="8")), ], SecurityGroups=self.config['app_sg'], InstanceType=self.config['instance_type'], )
def init_template(self): self.template.add_description(self.TEMPLATE_DESCRIPTION) ecs_cluster = self.template.add_resource(Cluster(self.CLUSTER_NAME)) ecs_instance_role = self.template.add_resource( Role('sitInstanceRole', Path='/', AssumeRolePolicyDocument={ "Statement": [{ "Effect": "Allow", "Principal": { "Service": ["ec2.amazonaws.com"] }, "Action": ["sts:AssumeRole"] }] })) ecs_instance_profile = self.template.add_resource( InstanceProfile('sitInstanceProfile', Path='/', Roles=[Ref(ecs_instance_role)])) ecs_instance_policy = self.template.add_resource( PolicyType('sitInstancePolicy', PolicyName='ecs-policy', Roles=[Ref(ecs_instance_role)], PolicyDocument={ "Statement": [{ "Effect": "Allow", "Action": [ "ecs:CreateCluster", "ecs:RegisterContainerInstance", "ecs:DeregisterContainerInstance", "ecs:DiscoverPollEndpoint", "ecs:Submit*", "ecs:Poll", "ecs:StartTelemetrySession", "ecr:GetAuthorizationToken", "ecr:BatchCheckLayerAvailability", "ecr:GetDownloadUrlForLayer", "ecr:BatchGetImage", "logs:CreateLogStream", "logs:PutLogEvents" ], "Resource": "*" }], })) commands = { '01_add_instance_to_cluster': { 'command': Join('', [ '#!/bin/bash\n', 'echo ECS_CLUSTER=', Ref(ecs_cluster), '$"\n"ECS_ENGINE_TASK_CLEANUP_WAIT_DURATION=', self.ECS_TASK_CLEANUP_WAIT, ' >> /etc/ecs/ecs.config' ]) } } files = { "/etc/cfn/cfn-hup.conf": { "content": Join("", [ "[main]\n", "stack=", Ref("AWS::StackId"), "\n", "region=", Ref("AWS::Region"), "\n" ]), "mode": "000400", "owner": "root", "group": "root" }, "/etc/cfn/hooks.d/cfn-auto-reloader.conf": { "content": Join("", [ "[cfn-auto-reloader-hook]\n", "triggers=post.update\n", "path=Resources.{0}.Metadata.AWS::CloudFormation::Init\n". format(self.LAUNCH_CONFIGURATION_NAME), "action=/opt/aws/bin/cfn-init -v ", " --stack ", Ref("AWS::StackName"), " --resource {0}".format( self.LAUNCH_CONFIGURATION_NAME), " --region ", Ref("AWS::Region"), "\n", "runas=root\n" ]) } } services = { "sysvinit": { "cfn-hup": { "enabled": "true", "ensureRunning": "true", "files": [ "/etc/cfn/cfn-hup.conf", "/etc/cfn/hooks.d/cfn-auto-reloader.conf" ] } } } launch_configuration = self.template.add_resource( LaunchConfiguration(self.LAUNCH_CONFIGURATION_NAME, ImageId=self.AMI_ID, IamInstanceProfile=Ref(ecs_instance_profile), InstanceType=self.INSTANCE_TYPE, UserData=self.user_data.get_base64_data(), AssociatePublicIpAddress=False, SecurityGroups=self.SECURITY_GROUPS, KeyName=self.KEY_NAME, Metadata=autoscaling.Metadata( cloudformation.Init({ "config": cloudformation.InitConfig( commands=commands, files=files, services=services) })), BlockDeviceMappings=[ autoscaling.BlockDeviceMapping( DeviceName=self.EBS_DEVICE_NAME, Ebs=autoscaling.EBSBlockDevice( DeleteOnTermination=True, VolumeSize=self.EBS_VOLUME_SIZE, VolumeType='gp2')) ])) auto_scaling_group = self.template.add_resource( AutoScalingGroup(self.AUTOSCALING_GROUP_NAME, MaxSize=self.MAX_SIZE, MinSize=self.MIN_SIZE, Cooldown=60, LaunchConfigurationName=Ref(launch_configuration), VPCZoneIdentifier=[self.SUBNET])) """ Scale UP Policy """ scaling_up_policy = self.template.add_resource( ScalingPolicy('{0}ScaleUpPolicy'.format( self.AUTOSCALING_GROUP_NAME), AdjustmentType='ChangeInCapacity', AutoScalingGroupName=Ref(auto_scaling_group), Cooldown=60, ScalingAdjustment='1')) for alarm_name, alarm in self.AUTOSCALE_UP_ALARMS.iteritems(): """ Cloud Watch Alarm """ self.template.add_resource( Alarm('{0}ScaleUp{1}'.format(self.AUTOSCALING_GROUP_NAME, alarm_name), ActionsEnabled=True, Namespace='AWS/ECS', MetricName=alarm['scaling_metric'], ComparisonOperator='GreaterThanOrEqualToThreshold', Threshold=alarm['scale_up_threshold'], EvaluationPeriods=1, Statistic=alarm['statistic'], Period=alarm['period'], AlarmActions=[Ref(scaling_up_policy)], Dimensions=[ MetricDimension(Name='ClusterName', Value=Ref(ecs_cluster)) ])) """ Scale DOWN Policy """ scaling_down_policy = self.template.add_resource( ScalingPolicy('{0}ScaleDownPolicy'.format( self.AUTOSCALING_GROUP_NAME), AdjustmentType='ChangeInCapacity', AutoScalingGroupName=Ref(auto_scaling_group), Cooldown=60, ScalingAdjustment='-1')) for alarm_name, alarm in self.AUTOSCALE_DOWN_ALARMS.iteritems(): """ Cloud Watch Alarm """ self.template.add_resource( Alarm('{0}ScaleDown{1}'.format(self.AUTOSCALING_GROUP_NAME, alarm_name), ActionsEnabled=True, Namespace='AWS/ECS', MetricName=alarm['scaling_metric'], ComparisonOperator='LessThanOrEqualToThreshold', Threshold=alarm['scale_down_threshold'], EvaluationPeriods=1, Statistic=alarm['statistic'], Period=alarm['period'], AlarmActions=[Ref(scaling_down_policy)], Dimensions=[ MetricDimension(Name='ClusterName', Value=Ref(ecs_cluster)) ]))
def template(): t = Template() keyname_param = t.add_parameter( Parameter( "KeyName", Description= "Name of an existing EC2 KeyPair to enable SSH access to the instance", Type="String")) image_id_param = t.add_parameter( Parameter("ImageId", Description="ImageId of the EC2 instance", Type="String")) instance_type_param = t.add_parameter( Parameter("InstanceType", Description="Type of the EC2 instance", Type="String")) ScaleCapacity = t.add_parameter( Parameter( "ScaleCapacity", Default="1", Type="String", Description="Number of api servers to run", )) VPCAvailabilityZone2 = t.add_parameter( Parameter( "VPCAvailabilityZone2", MinLength="1", Type="String", Description="Second availability zone", MaxLength="255", )) VPCAvailabilityZone1 = t.add_parameter( Parameter( "VPCAvailabilityZone1", MinLength="1", Type="String", Description="First availability zone", MaxLength="255", )) SecurityGroup = t.add_parameter( Parameter( "SecurityGroup", Type="String", Description="Security group.", )) RootStackName = t.add_parameter( Parameter( "RootStackName", Type="String", Description="The root stack name", )) ApiSubnet2 = t.add_parameter( Parameter( "ApiSubnet2", Type="String", Description="Second private VPC subnet ID for the api app.", )) ApiSubnet1 = t.add_parameter( Parameter( "ApiSubnet1", Type="String", Description="First private VPC subnet ID for the api app.", )) ##################################################### # Launch Configuration ##################################################### LaunchConfig = t.add_resource( LaunchConfiguration( "LaunchConfiguration", Metadata=autoscaling.Metadata( cloudformation.Init( cloudformation.InitConfigSets(InstallAndRun=['Install']), Install=cloudformation.InitConfig( packages={ "apt": { "curl": [], "zip": [], "unzip": [], "git": [], "supervisor": [], "sqlite3": [], "nginx": [], "php7.2-fpm": [], "php7.2-cli": [], "php7.2-pgsql": [], "php7.2-sqlite3": [], "php7.2-gd": [], "php7.2-curl": [], "php7.2-memcached": [], "php7.2-imap": [], "php7.2-mysql": [], "php7.2-mbstring": [], "php7.2-xml": [], "php7.2-zip": [], "php7.2-bcmath": [], "php7.2-soap": [], "php7.2-intl": [], "php7.2-readline": [], "php-msgpack": [], "php-igbinary": [] } }, files=cloudformation.InitFiles({ "/etc/nginx/sites-available/default": cloudformation. InitFile(content=Join('', [ "server {\n", " listen 80 default_server;\n", " root /var/www/html/public;\n", " index index.html index.htm index.php;\n", " server_name _;\n", " charset utf-8;\n", " location = /favicon.ico { log_not_found off; access_log off; }\n", " location = /robots.txt { log_not_found off; access_log off; }\n", " location / {\n", " try_files $uri $uri/ /index.php$is_args$args;\n", " }\n", " location ~ \.php$ {\n", " include snippets/fastcgi-php.conf;\n", " fastcgi_pass unix:/run/php/php7.2-fpm.sock;\n", " }\n", " error_page 404 /index.php;\n", "}\n" ])), "/etc/supervisor/conf.d/supervisord.conf": cloudformation. InitFile(content=Join('', [ "[supervisord]\n", "nodaemon=true\n", "[program:nginx]\n", "command=nginx\n", "stdout_logfile=/dev/stdout\n", "stdout_logfile_maxbytes=0\n", "stderr_logfile=/dev/stderr\n", "stderr_logfile_maxbytes=0\n", "[program:php-fpm]\n", "command=php-fpm7.2\n", "stdout_logfile=/dev/stdout\n", "stdout_logfile_maxbytes=0\n", "stderr_logfile=/dev/stderr\n", "stderr_logfile_maxbytes=0\n", "[program:horizon]\n", "process_name=%(program_name)s\n", "command=php /var/www/html/artisan horizon\n", "autostart=true\n", "autorestart=true\n", "user=root\n", "redirect_stderr=true\n", "stdout_logfile=/var/www/html/storage/logs/horizon.log\n", ])), "/etc/php/7.2/fpm/php-fpm.conf": cloudformation.InitFile( content=Join('', [ "[global]\n", "pid = /run/php/php7.2-fpm.pid\n", "error_log = /proc/self/fd/2\n", "include=/etc/php/7.2/fpm/pool.d/*.conf\n" ])) }))), ), UserData=Base64( Join('', [ "#!/bin/bash -xe\n", "apt-get update -y\n", "apt-get install -y language-pack-en-base\n", "export LC_ALL=en_US.UTF-8\n", "export LANG=en_US.UTF-8\n", "apt-get install -y ruby\n", "wget https://aws-codedeploy-ap-south-1.s3.amazonaws.com/latest/install\n", "chmod +x ./install\n", "./install auto\n", "service codedeploy-agent start\n", "apt-get install -y software-properties-common python-software-properties\n", "add-apt-repository -y ppa:ondrej/php\n", "apt-get update -y\n", "apt-get install -y python-setuptools\n", "mkdir -p /opt/aws/bin\n", "wget https://s3.amazonaws.com/cloudformation-examples/aws-cfn-bootstrap-latest.tar.gz\n", "easy_install --script-dir /opt/aws/bin aws-cfn-bootstrap-latest.tar.gz\n", "# Install the files and packages from the metadata\n", "/opt/aws/bin/cfn-init -v ", " --stack ", Ref("AWS::StackName"), " --resource LaunchConfiguration", " --configsets InstallAndRun ", " --region ", Ref("AWS::Region"), "\n" ])), ImageId=Ref("ImageId"), KeyName=Ref(keyname_param), BlockDeviceMappings=[ ec2.BlockDeviceMapping(DeviceName="/dev/sda1", Ebs=ec2.EBSBlockDevice(VolumeSize="8")), ], InstanceType=Ref("InstanceType"), IamInstanceProfile="CodeDeployDemo-EC2-Instance-Profile", SecurityGroups=[Ref(SecurityGroup)])) ##################################################### # AutoScaling Groups ##################################################### AutoscalingGroup = t.add_resource( AutoScalingGroup( "AutoscalingGroup", DesiredCapacity=Ref(ScaleCapacity), Tags=[ Tag("App", "cc-worker", True), Tag("Name", "cc-worker", True) ], LaunchConfigurationName=Ref(LaunchConfig), MinSize=Ref(ScaleCapacity), MaxSize=Ref(ScaleCapacity), VPCZoneIdentifier=[Ref(ApiSubnet1), Ref(ApiSubnet2)], AvailabilityZones=[ Ref(VPCAvailabilityZone1), Ref(VPCAvailabilityZone2) ], HealthCheckType="EC2", UpdatePolicy=UpdatePolicy( AutoScalingReplacingUpdate=AutoScalingReplacingUpdate( WillReplace=True, ), AutoScalingRollingUpdate=AutoScalingRollingUpdate( PauseTime='PT5M', MinInstancesInService="1", MaxBatchSize='1', WaitOnResourceSignals=True)))) return t.to_json()