kulkarnidotcom
2/22/2018 - 6:31 PM
Test YAML snippet
AWSTemplateFormatVersion: 2010-09-09
Description: >-
AWS CloudFormation Sample Template ELBStickinessSample: Create a load balanced
sample web site with ELB stickiness enabled. The AI is chosen based on the
region in which the stack is run. This example creates 2 EC2 instances behind
a load balancer with a simple health check. The ec2 instances are untargeted
and may be deployed in one or more availability zones. The web site is
available on port 80, however, the instances can be configured to listen on
any port (8888 by default). **WARNING** This template creates one or more
Amazon EC2 instances and an Application Load Balancer. You will be billed for
the AWS resources used if you create a stack from this template.
Parameters:
VpcId:
Type: 'AWS::EC2::VPC::Id'
Description: VpcId of your existing Virtual Private Cloud (VPC)
ConstraintDescription: must be the VPC Id of an existing Virtual Private Cloud.
Subnets:
Type: 'List<AWS::EC2::Subnet::Id>'
Description: The list of SubnetIds in your Virtual Private Cloud (VPC)
ConstraintDescription: >-
must be a list of at least two existing subnets associated with at least
two different availability zones. They should be residing in the selected
Virtual Private Cloud.
InstanceType:
Description: WebServer EC2 instance type
Type: String
Default: t2.small
AllowedValues:
- t1.micro
ConstraintDescription: must be a valid EC2 instance type.
KeyName:
Description: Name of an existing EC2 KeyPair to enable SSH access to the instances
Type: 'AWS::EC2::KeyPair::KeyName'
ConstraintDescription: must be the name of an existing EC2 KeyPair.
SSHLocation:
Description: The IP address range that can be used to SSH to the EC2 instances
Type: String
MinLength: '9'
MaxLength: '18'
Default: 0.0.0.0/0
AllowedPattern: '(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})/(\d{1,2})'
ConstraintDescription: must be a valid IP CIDR range of the form x.x.x.x/x.
Mappings:
Region2Examples:
us-east-1:
Examples: 'https://s3.amazonaws.com/cloudformation-examples-us-east-1'
AWSInstanceType2Arch:
t1.micro:
Arch: PV64
AWSInstanceType2NATArch:
t1.micro:
Arch: NATPV64
AWSRegionArch2AMI:
us-east-1:
PV64: ami-2a69aa47
HVM64: ami-6869aa05
HVMG2: ami-0a6e3770
Resources:
ApplicationLoadBalancer:
Type: 'AWS::ElasticLoadBalancingV2::LoadBalancer'
Properties:
Subnets: !Ref Subnets
ALBListener:
Type: 'AWS::ElasticLoadBalancingV2::Listener'
Properties:
DefaultActions:
- Type: forward
TargetGroupArn: !Ref ALBTargetGroup
LoadBalancerArn: !Ref ApplicationLoadBalancer
Port: '80'
Protocol: HTTP
ALBTargetGroup:
Type: 'AWS::ElasticLoadBalancingV2::TargetGroup'
Properties:
HealthCheckIntervalSeconds: 30
HealthCheckTimeoutSeconds: 5
HealthyThresholdCount: 3
Port: 80
Protocol: HTTP
UnhealthyThresholdCount: 5
VpcId: !Ref VpcId
Targets:
- Id: !Ref EC2Instance1
Port: 80
- Id: !Ref EC2Instance2
Port: 80
TargetGroupAttributes:
- Key: stickiness.enabled
Value: 'true'
- Key: stickiness.type
Value: lb_cookie
- Key: stickiness.lb_cookie.duration_seconds
Value: '180'
EC2Instance1:
Type: 'AWS::EC2::Instance'
Metadata:
Comment: Install a simple application
'AWS::CloudFormation::Init':
config:
packages:
yum:
httpd: []
files:
/var/www/html/index.html:
content: !Join
- |+
- - <img src="
- !FindInMap
- Region2Examples
- !Ref 'AWS::Region'
- Examples
- /cloudformation_graphic.png" alt="AWS CloudFormation Logo"/>
- >-
<h1>Congratulations, you have successfully launched the AWS
CloudFormation sample.</h1>
mode: '000644'
owner: root
group: root
/etc/cfn/cfn-hup.conf:
content: !Join
- ''
- - |
[main]
- stack=
- !Ref 'AWS::StackId'
- |+
- region=
- !Ref 'AWS::Region'
- |+
mode: '000400'
owner: root
group: root
/etc/cfn/hooks.d/cfn-auto-reloader.conf:
content: !Join
- ''
- - |
[cfn-auto-reloader-hook]
- |
triggers=post.update
- >
path=Resources.WebServerInstance.Metadata.AWS::CloudFormation::Init
- 'action=/opt/aws/bin/cfn-init -v '
- ' --stack '
- !Ref 'AWS::StackName'
- ' --resource EC2Instance1 '
- ' --region '
- !Ref 'AWS::Region'
- |+
- |
runas=root
mode: '000400'
owner: root
group: root
services:
sysvinit:
httpd:
enabled: 'true'
ensureRunning: 'true'
cfn-hup:
enabled: 'true'
ensureRunning: 'true'
files:
- /etc/cfn/cfn-hup.conf
- /etc/cfn/hooks.d/cfn-auto-reloader.conf
Properties:
SecurityGroups:
- !Ref InstanceSecurityGroup
KeyName: !Ref KeyName
InstanceType: !Ref InstanceType
ImageId: !FindInMap
- AWSRegionArch2AMI
- !Ref 'AWS::Region'
- !FindInMap
- AWSInstanceType2Arch
- !Ref InstanceType
- Arch
UserData: !Base64
'Fn::Join':
- ''
- - |
#!/bin/bash -xe
- |
yum update -y aws-cfn-bootstrap
- '/opt/aws/bin/cfn-init -v '
- ' --stack '
- !Ref 'AWS::StackName'
- ' --resource EC2Instance1 '
- ' --region '
- !Ref 'AWS::Region'
- |+
- '/opt/aws/bin/cfn-signal -e $? '
- ' --stack '
- !Ref 'AWS::StackName'
- ' --resource EC2Instance1 '
- ' --region '
- !Ref 'AWS::Region'
- |+
CreationPolicy:
ResourceSignal:
Timeout: PT15M
EC2Instance2:
Type: 'AWS::EC2::Instance'
Properties:
SecurityGroups:
- !Ref InstanceSecurityGroup
KeyName: !Ref KeyName
InstanceType: !Ref InstanceType
ImageId: !FindInMap
- AWSRegionArch2AMI
- !Ref 'AWS::Region'
- !FindInMap
- AWSInstanceType2Arch
- !Ref InstanceType
- Arch
UserData: !Base64
'Fn::Join':
- ''
- - |
#!/bin/bash -xe
- |
yum update -y aws-cfn-bootstrap
- '/opt/aws/bin/cfn-init -v '
- ' --stack '
- !Ref 'AWS::StackName'
- ' --resource EC2Instance1 '
- ' --region '
- !Ref 'AWS::Region'
- |+
- '/opt/aws/bin/cfn-signal -e $? '
- ' --stack '
- !Ref 'AWS::StackName'
- ' --resource EC2Instance2 '
- ' --region '
- !Ref 'AWS::Region'
- |+
CreationPolicy:
ResourceSignal:
Timeout: PT15M
InstanceSecurityGroup:
Type: 'AWS::EC2::SecurityGroup'
Properties:
GroupDescription: Enable SSH access and HTTP access on the inbound port
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: '22'
ToPort: '22'
CidrIp: !Ref SSHLocation
- IpProtocol: tcp
FromPort: '80'
ToPort: '80'
CidrIp: 0.0.0.0/0
Outputs:
URL:
Description: URL of the sample website
Value: !Join
- ''
- - 'http://'
- !GetAtt
- ApplicationLoadBalancer
- DNSName