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cf-MultiAZ-AutoSacling-Nginx.yaml
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cf-MultiAZ-AutoSacling-Nginx.yaml
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AWSTemplateFormatVersion: 2010-09-09
Description: 'Create a multi-az, load balanced and Auto Scaled web server running on Nginx.'
Parameters:
InstanceType:
Description: WebServer EC2 instance type
Type: String
Default: t2.micro
AllowedValues:
- t1.micro
- t2.nano
- t2.micro
- t2.small
- t2.medium
- t2.large
- m1.small
- m1.medium
- m1.large
- m1.xlarge
- m2.xlarge
- m2.2xlarge
- m2.4xlarge
- m3.medium
- m3.large
- m3.xlarge
- m3.2xlarge
- m4.large
- m4.xlarge
- m4.2xlarge
- m4.4xlarge
- m4.10xlarge
- c1.medium
- c1.xlarge
- c3.large
- c3.xlarge
- c3.2xlarge
- c3.4xlarge
- c3.8xlarge
- c4.large
- c4.xlarge
- c4.2xlarge
- c4.4xlarge
- c4.8xlarge
- g2.2xlarge
- g2.8xlarge
- r3.large
- r3.xlarge
- r3.2xlarge
- r3.4xlarge
- r3.8xlarge
- i2.xlarge
- i2.2xlarge
- i2.4xlarge
- i2.8xlarge
- d2.xlarge
- d2.2xlarge
- d2.4xlarge
- d2.8xlarge
- hi1.4xlarge
- hs1.8xlarge
- cr1.8xlarge
- cc2.8xlarge
- cg1.4xlarge
ConstraintDescription: must be a valid EC2 instance type.
KeyName:
Description: The EC2 Key Pair to allow 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:
AWSInstanceType2Arch:
t1.micro:
Arch: PV64
t2.nano:
Arch: HVM64
t2.micro:
Arch: HVM64
t2.small:
Arch: HVM64
t2.medium:
Arch: HVM64
t2.large:
Arch: HVM64
m1.small:
Arch: PV64
m1.medium:
Arch: PV64
m1.large:
Arch: PV64
m1.xlarge:
Arch: PV64
m2.xlarge:
Arch: PV64
m2.2xlarge:
Arch: PV64
m2.4xlarge:
Arch: PV64
m3.medium:
Arch: HVM64
m3.large:
Arch: HVM64
m3.xlarge:
Arch: HVM64
m3.2xlarge:
Arch: HVM64
m4.large:
Arch: HVM64
m4.xlarge:
Arch: HVM64
m4.2xlarge:
Arch: HVM64
m4.4xlarge:
Arch: HVM64
m4.10xlarge:
Arch: HVM64
c1.medium:
Arch: PV64
c1.xlarge:
Arch: PV64
c3.large:
Arch: HVM64
c3.xlarge:
Arch: HVM64
c3.2xlarge:
Arch: HVM64
c3.4xlarge:
Arch: HVM64
c3.8xlarge:
Arch: HVM64
c4.large:
Arch: HVM64
c4.xlarge:
Arch: HVM64
c4.2xlarge:
Arch: HVM64
c4.4xlarge:
Arch: HVM64
c4.8xlarge:
Arch: HVM64
g2.2xlarge:
Arch: HVMG2
g2.8xlarge:
Arch: HVMG2
r3.large:
Arch: HVM64
r3.xlarge:
Arch: HVM64
r3.2xlarge:
Arch: HVM64
r3.4xlarge:
Arch: HVM64
r3.8xlarge:
Arch: HVM64
i2.xlarge:
Arch: HVM64
i2.2xlarge:
Arch: HVM64
i2.4xlarge:
Arch: HVM64
i2.8xlarge:
Arch: HVM64
d2.xlarge:
Arch: HVM64
d2.2xlarge:
Arch: HVM64
d2.4xlarge:
Arch: HVM64
d2.8xlarge:
Arch: HVM64
hi1.4xlarge:
Arch: HVM64
hs1.8xlarge:
Arch: HVM64
cr1.8xlarge:
Arch: HVM64
cc2.8xlarge:
Arch: HVM64
AWSRegionArch2AMI:
us-east-1:
PV64: ami-2a69aa47
HVM64: ami-6869aa05
HVMG2: ami-a41a3fb3
us-west-2:
PV64: ami-7f77b31f
HVM64: ami-f2d3638a
HVMG2: ami-caf253aa
us-west-1:
PV64: ami-a2490dc2
HVM64: ami-31490d51
HVMG2: ami-00347e60
eu-west-1:
PV64: ami-4cdd453f
HVM64: ami-f9dd458a
HVMG2: ami-e2f7bd91
eu-west-2:
PV64: NOT_SUPPORTED
HVM64: ami-886369ec
HVMG2: NOT_SUPPORTED
eu-central-1:
PV64: ami-6527cf0a
HVM64: ami-ea26ce85
HVMG2: ami-d2ff04bd
ap-northeast-1:
PV64: ami-3e42b65f
HVM64: ami-374db956
HVMG2: ami-4c78d52d
ap-northeast-2:
PV64: NOT_SUPPORTED
HVM64: ami-2b408b45
HVMG2: NOT_SUPPORTED
ap-southeast-1:
PV64: ami-df9e4cbc
HVM64: ami-a59b49c6
HVMG2: ami-f3f95990
ap-southeast-2:
PV64: ami-63351d00
HVM64: ami-dc361ebf
HVMG2: ami-3a122e59
ap-south-1:
PV64: NOT_SUPPORTED
HVM64: ami-ffbdd790
HVMG2: ami-21a7d34e
us-east-2:
PV64: NOT_SUPPORTED
HVM64: ami-f6035893
HVMG2: NOT_SUPPORTED
ca-central-1:
PV64: NOT_SUPPORTED
HVM64: ami-730ebd17
HVMG2: NOT_SUPPORTED
sa-east-1:
PV64: ami-1ad34676
HVM64: ami-6dd04501
HVMG2: NOT_SUPPORTED
cn-north-1:
PV64: ami-77559f1a
HVM64: ami-8e6aa0e3
HVMG2: NOT_SUPPORTED
Resources:
WebServerGroup:
Type: 'AWS::AutoScaling::AutoScalingGroup'
Properties:
AvailabilityZones: !GetAZs ''
LaunchConfigurationName: !Ref LaunchConfig
MinSize: '3'
MaxSize: '9'
LoadBalancerNames:
- !Ref ElasticLoadBalancer
LaunchConfig:
Type: 'AWS::AutoScaling::LaunchConfiguration'
Properties:
KeyName: !Ref KeyName
ImageId: !FindInMap
- AWSRegionArch2AMI
- !Ref 'AWS::Region'
- !FindInMap
- AWSInstanceType2Arch
- !Ref InstanceType
- Arch
UserData: !Base64
'Fn::Join':
- ''
- - '#!/bin/bash'
- |+
- sudo yum install -y epel-release
- |+
- sudo yum install -y nginx
- |+
- |+
- rm /usr/share/nginx/html/index.html
- |+
- echo '<head>' >> /usr/share/nginx/html/index.html
- |+
- echo '<title>Welcome</title>' >> /usr/share/nginx/html/index.html
- |+
- echo '</head>' >> /usr/share/nginx/html/index.html
- |+
- echo '<center>' >> /usr/share/nginx/html/index.html
- |+
- echo '<body>' >> /usr/share/nginx/html/index.html
- |+
- >-
echo '<h1><strong>WEB SERVER DETAILS</strong></h1>' >>
/usr/share/nginx/html/index.html
- |+
- >-
INSTANCE_ID=`curl
http://169.254.169.254/latest/meta-data/instance-id`
- |+
- >-
echo '<h2>INSTANCE ID: '$INSTANCE_ID'</h2>' >>
/usr/share/nginx/html/index.html
- |+
- >-
INSTANCE_TYPE=`curl
http://169.254.169.254/latest/meta-data/instance-type`
- |+
- >-
echo '<h2>AMI ID: '$INSTANCE_TYPE'</h2>' >>
/usr/share/nginx/html/index.html
- |+
- >-
PRIVATE_IP=`curl
http://169.254.169.254/latest/meta-data/local-ipv4`
- |+
- >-
echo '<h2>PRIVATE IP: '$PRIVATE_IP'</h2>' >>
/usr/share/nginx/html/index.html
- |+
- >-
AZ=`curl
http://169.254.169.254/latest/meta-data/placement/availability-zone`
- |+
- >-
echo '<h2>AVAILABILITY ZONE: '$AZ'</h2>' >>
/usr/share/nginx/html/index.html
- |+
- 'AMI_ID=`curl http://169.254.169.254/latest/meta-data/ami-id`'
- |+
- >-
echo '<h2>AMI ID: '$AMI_ID'</h2>' >>
/usr/share/nginx/html/index.html
- |+
- 'HOST_NAME=`curl http://169.254.169.254/latest/meta-data/hostname`'
- |+
- >-
echo '<h2>HOSTNAME: '$HOST_NAME'</h2>' >>
/usr/share/nginx/html/index.html
- |+
- |+
- echo '</div>' >> /usr/share/nginx/html/index.html
- |+
- echo '</body>' >> /usr/share/nginx/html/index.html
- |+
- echo '</center>' >> /usr/share/nginx/html/index.html
- |+
- echo '</html>' >> /usr/share/nginx/html/index.html
- |+
- sudo service enable nginx
- |+
- sudo chkconfig nginx on
- |+
- sudo service nginx start
- |+
SecurityGroups:
- !Ref InstanceSecurityGroup
InstanceType: !Ref InstanceType
WebServerScaleUpPolicy:
Type: 'AWS::AutoScaling::ScalingPolicy'
Properties:
AdjustmentType: ChangeInCapacity
AutoScalingGroupName: !Ref WebServerGroup
Cooldown: '60'
ScalingAdjustment: '1'
WebServerScaleDownPolicy:
Type: 'AWS::AutoScaling::ScalingPolicy'
Properties:
AdjustmentType: ChangeInCapacity
AutoScalingGroupName: !Ref WebServerGroup
Cooldown: '60'
ScalingAdjustment: '-1'
CPUAlarmHigh:
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: Scale-out if CPU > 90% for 10 minutes
MetricName: CPUUtilization
Namespace: AWS/EC2
Statistic: Average
Period: '300'
EvaluationPeriods: '2'
Threshold: '90'
AlarmActions:
- !Ref WebServerScaleUpPolicy
Dimensions:
- Name: AutoScalingGroupName
Value: !Ref WebServerGroup
ComparisonOperator: GreaterThanThreshold
CPUAlarmLow:
Type: 'AWS::CloudWatch::Alarm'
Properties:
AlarmDescription: Scale-in if CPU < 70% for 10 minutes
MetricName: CPUUtilization
Namespace: AWS/EC2
Statistic: Average
Period: '300'
EvaluationPeriods: '2'
Threshold: '70'
AlarmActions:
- !Ref WebServerScaleDownPolicy
Dimensions:
- Name: AutoScalingGroupName
Value: !Ref WebServerGroup
ComparisonOperator: LessThanThreshold
ElasticLoadBalancer:
Type: 'AWS::ElasticLoadBalancing::LoadBalancer'
Properties:
AvailabilityZones: !GetAZs ''
CrossZone: 'true'
Listeners:
- LoadBalancerPort: '80'
InstancePort: '80'
Protocol: HTTP
HealthCheck:
Target: 'http:80/'
HealthyThreshold: '3'
UnhealthyThreshold: '5'
Interval: '30'
Timeout: '5'
InstanceSecurityGroup:
Type: 'AWS::EC2::SecurityGroup'
Properties:
GroupDescription: Enable SSH access and HTTP from the load balancer only
SecurityGroupIngress:
- IpProtocol: tcp
FromPort: '22'
ToPort: '22'
CidrIp: !Ref SSHLocation
- IpProtocol: tcp
FromPort: '80'
ToPort: '80'
SourceSecurityGroupOwnerId: !GetAtt
- ElasticLoadBalancer
- SourceSecurityGroup.OwnerAlias
SourceSecurityGroupName: !GetAtt
- ElasticLoadBalancer
- SourceSecurityGroup.GroupName
Outputs:
URL:
Description: The URL of the website
Value: !Join
- ''
- - 'http://'
- !GetAtt
- ElasticLoadBalancer
- DNSName