EC2 cloudFormationTemplate: различия между версиями

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</PRE>
  
</PRE>
   
  +
<PRE>
  +
"Mappings" : {
  +
"AWSInstanceType2Arch" : {
  +
"t1.micro" : { "Arch" : "64" },
  +
"m1.small" : { "Arch" : "64" },
  +
"m1.medium" : { "Arch" : "64" },
  +
"m1.large" : { "Arch" : "64" },
  +
"m1.xlarge" : { "Arch" : "64" },
  +
"m2.xlarge" : { "Arch" : "64" },
  +
"m2.2xlarge" : { "Arch" : "64" },
  +
"m2.4xlarge" : { "Arch" : "64" },
  +
"c1.medium" : { "Arch" : "64" },
  +
"c1.xlarge" : { "Arch" : "64" },
  +
"cc1.4xlarge" : { "Arch" : "64HVM" },
  +
"cc2.8xlarge" : { "Arch" : "64HVM" },
  +
"cg1.4xlarge" : { "Arch" : "64HVM" }
  +
},
  +
  +
"AWSRegionArch2AMI" : {
  +
"us-east-1" : { "32" : "ami-31814f58", "64" : "ami-1b814f72", "64HVM" : "ami-0da96764" },
  +
"us-west-2" : { "32" : "ami-38fe7308", "64" : "ami-30fe7300", "64HVM" : "NOT_YET_SUPPORTED" },
  +
"us-west-1" : { "32" : "ami-11d68a54", "64" : "ami-1bd68a5e", "64HVM" : "NOT_YET_SUPPORTED" },
  +
"eu-west-1" : { "32" : "ami-973b06e3", "64" : "ami-953b06e1", "64HVM" : "NOT_YET_SUPPORTED" },
  +
"ap-southeast-1" : { "32" : "ami-b4b0cae6", "64" : "ami-beb0caec", "64HVM" : "NOT_YET_SUPPORTED" },
  +
"ap-northeast-1" : { "32" : "ami-0644f007", "64" : "ami-0a44f00b", "64HVM" : "NOT_YET_SUPPORTED" },
  +
"sa-east-1" : { "32" : "ami-3e3be423", "64" : "ami-3c3be421", "64HVM" : "NOT_YET_SUPPORTED" }
  +
}
  +
},
  +
</PRE>
  +
<PRE>
  +
"Resources" : {
  +
</PRE>
  +
<PRE>
  +
"CfnUser" : {
  +
"Type" : "AWS::IAM::User",
  +
"Properties" : {
  +
"Path": "/",
  +
"Policies": [{
  +
"PolicyName": "root",
  +
"PolicyDocument": { "Statement":[{
  +
"Effect":"Allow",
  +
"Action":"cloudformation:DescribeStackResource",
  +
"Resource":"*"
  +
}]}
  +
}]
  +
}
  +
},
  +
</PRE>
  +
<PRE>
  +
"HostKeys" : {
  +
"Type" : "AWS::IAM::AccessKey",
  +
"Properties" : {
  +
"UserName" : {"Ref": "CfnUser"}
  +
}
  +
},
  +
</PRE>
  +
  +
<PRE>
  +
"ElasticLoadBalancer" : {
  +
"Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
  +
"Properties" : {
  +
"AvailabilityZones" : { "Fn::GetAZs" : "" },
  +
"Listeners" : [ {
  +
"LoadBalancerPort" : "80",
  +
"InstancePort" : "8080",
  +
"Protocol" : "HTTP"
  +
} ],
  +
"HealthCheck" : {
  +
"Target" : "HTTP:80/",
  +
"HealthyThreshold" : "3",
  +
"UnhealthyThreshold" : "5",
  +
"Interval" : "30",
  +
"Timeout" : "5"
  +
}
  +
}
  +
},
  +
</PRE>
  +
  +
<PRE>
  +
"WebServerAutoScailingGroup" : {
  +
"Type" : "AWS::AutoScaling::AutoScalingGroup",
  +
"Properties" : {
  +
"AvailabilityZones" : { "Fn::GetAZs" : ""},
  +
"LaunchConfigurationName" : { "Ref" : "WebServerLaunchConfig" },
  +
"MinSize" : "1",
  +
"MaxSize" : "3",
  +
"LoadBalancerNames" : [ { "Ref" : "ElasticLoadBalancer" } ]
  +
}
  +
},
  +
</PRE>
  +
  +
<PRE>
  +
"WebServerScaleUpPolicy" : {
  +
"Type" : "AWS::AutoScaling::ScalingPolicy",
  +
"Properties" : {
  +
"AdjustmentType" : "ChangeInCapacity",
  +
"AutoScalingGroupName" : { "Ref" : "WebServerAutoScailingGroup" },
  +
"Cooldown" : "60",
  +
"ScalingAdjustment" : "1"
  +
}
  +
},
  +
</PRE>
  +
  +
<PRE>
  +
"WebServerScaleDownPolicy" : {
  +
"Type" : "AWS::AutoScaling::ScalingPolicy",
  +
"Properties" : {
  +
"AdjustmentType" : "ChangeInCapacity",
  +
"AutoScalingGroupName" : { "Ref" : "WebServerAutoScailingGroup" },
  +
"Cooldown" : "60",
  +
"ScalingAdjustment" : "-1"
  +
}
  +
},
  +
</PRE>
  +
  +
<PRE>
  +
"CPUAlarmHigh": {
  +
"Type": "AWS::CloudWatch::Alarm",
  +
"Properties": {
  +
"AlarmDescription": "Scale-up if CPU > 90% for 60 sec",
  +
"MetricName": "CPUUtilization",
  +
"Namespace": "AWS/EC2",
  +
"Statistic": "Average",
  +
"Period": "60",
  +
"EvaluationPeriods": "2",
  +
"Threshold": "90",
  +
"AlarmActions": [ { "Ref": "WebServerScaleUpPolicy" } ],
  +
"Dimensions": [
  +
{
  +
"Name": "AutoScalingGroupName",
  +
"Value": { "Ref": "WebServerAutoScailingGroup" }
  +
}
  +
],
  +
"ComparisonOperator": "GreaterThanThreshold"
  +
}
  +
},
  +
</PRE>
  +
<PRE>
  +
"CPUAlarmLow": {
  +
"Type": "AWS::CloudWatch::Alarm",
  +
"Properties": {
  +
"AlarmDescription": "Scale-down if CPU < 70% for 1 minutes",
  +
"MetricName": "CPUUtilization",
  +
"Namespace": "AWS/EC2",
  +
"Statistic": "Average",
  +
"Period": "60",
  +
"EvaluationPeriods": "2",
  +
"Threshold": "70",
  +
"AlarmActions": [ { "Ref": "WebServerScaleDownPolicy" } ],
  +
"Dimensions": [
  +
{
  +
"Name": "AutoScalingGroupName",
  +
"Value": { "Ref": "WebServerAutoScailingGroup" }
  +
}
  +
],
  +
"ComparisonOperator": "LessThanThreshold"
  +
}
  +
},
  +
</PRE>
  +
<PRE>
  +
"WebServerLaunchConfig": {
  +
"Type" : "AWS::AutoScaling::LaunchConfiguration",
  +
"Metadata" : {
  +
"Comment1" : "this is test config",
  +
</PRE>
  +
<PRE>
  +
"AWS::CloudFormation::Init" : {
  +
"config" : {
  +
</PRE>
  +
<PRE>
  +
"packages" : {
  +
"rubygems" : {
  +
"chef" : [ "0.10.2" ]
  +
},
  +
</PRE>
  +
<PRE>
  +
"yum" : {
  +
"puppet" : [],
  +
"mc" : [],
  +
"tomcat7" : [],
  +
"nginx" : [],
  +
"mysql" : [],
  +
"mysql-server" : [],
  +
"mysql-libs" : [],
  +
"httpd" : [],
  +
"php" : [],
  +
"php-mysql" : [],
  +
"gcc-c++" : [],
  +
"ruby-devel" : [],
  +
"make" : [],
  +
"autoconf" : [],
  +
"automake" : [],
  +
"rubygems" : []
  +
  +
}
  +
},
  +
</PRE>
  +
<PRE>
  +
"sources" : {
  +
"/var/www/html" : "https://s3.amazonaws.com/cloudformation-examples/CloudFormationPHPSample.zip"
  +
},
  +
</PRE>
  +
<PRE>
  +
"files" : {
  +
"/etc/chef/solo.rb" : {
  +
"content" : { "Fn::Join" : ["", [
  +
"log_level :info\n",
  +
"log_location STDOUT\n",
  +
"file_cache_path \"/var/chef-solo\"\n",
  +
"cookbook_path \"/var/chef-solo/cookbooks\"\n",
  +
"json_attribs \"/etc/chef/node.json\"\n"
  +
]] },
  +
"mode" : "000644",
  +
"owner" : "root",
  +
"group" : "root"
  +
},
  +
</PRE>
  +
<PRE>
  +
"/tmp/setup.mysql" : {
  +
"content" : "CREATE DATABASE lampdb;\n",
  +
"mode" : "000644",
  +
"owner" : "root",
  +
"group" : "root"
  +
},
  +
</PRE>
  +
<PRE>
  +
"/etc/yum.repos.d/epel.repo" : {
  +
"source" : "https://s3.amazonaws.com/cloudformation-examples/enable-epel-on-amazon-linux-ami",
  +
"mode" : "000644",
  +
"owner" : "root",
  +
"group" : "root"
  +
},
  +
<PRE>
  +
</PRE>
  +
"/etc/puppet/puppet.conf" : {
  +
"content" : { "Fn::Join" : ["", [
  +
"[main]\n",
  +
" logdir=/var/log/puppet\n",
  +
" rundir=/var/run/puppet\n",
  +
" ssldir=$vardir/ssl\n",
  +
" pluginsync=true\n",
  +
"[agent]\n",
  +
" classfile=$vardir/classes.txt\n",
  +
" localconfig=$vardir/localconfig\n",
  +
" server=",{ "Ref" : "PuppetMasterDNSName" },"\n"
  +
]] },
  +
"mode" : "000644",
  +
"owner" : "root",
  +
"group" : "root"
  +
}
  +
},
  +
</PRE>
  +
<PRE>
  +
"services" : {
  +
"sysvinit" : {
  +
"mysqld" : {
  +
"enabled" : "true",
  +
"ensureRunning" : "true"
  +
},
  +
"httpd" : {
  +
"enabled" : "true",
  +
"ensureRunning" : "true"
  +
}
  +
}
  +
}
  +
}
  +
}
  +
},
  +
</PRE>
  +
<PRE>
  +
"Properties": {
  +
"ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
  +
{ "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] },
  +
"InstanceType" : { "Ref" : "InstanceType" },
  +
"KeyName" : { "Ref" : "KeyName" },
  +
"SecurityGroups" : [ {"Ref" : "WebServerSecurityGroup"} ],
  +
</PRE>
  +
<PRE>
  +
"UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [
  +
"#!/bin/bash -v\n",
  +
"yum update -y aws-cfn-bootstrap\n",
  +
  +
"# Helper function\n",
  +
"function error_exit\n",
  +
"{\n",
  +
" /opt/aws/bin/cfn-signal -e 1 -r \"$1\" '", { "Ref" : "WaitHandle" }, "'\n",
  +
" exit 1\n",
  +
"}\n",
  +
  +
"# Install LAMP packages\n",
  +
"#/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackName" }, " -r WebServer ", "--access-key ", { "Ref" : "HostKeys" }, " --secret-key ", {"Fn::GetAtt": ["HostKeys", "SecretAccessKey"]}, " --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",
  +
" /opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackName" }, " -r WebServerLaunchConfig ", "--access-key ", { "Ref" : "HostKeys" }, " --secret-key ", {"Fn::GetAtt": ["HostKeys", "SecretAccessKey"]}, " --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",
  +
  +
  +
"# Setup MySQL, create a user and a database\n",
  +
"mysqladmin -u root password '", { "Ref" : "DBRootPassword" }, "' || error_exit 'Failed to initialize root password'\n",
  +
"mysql -u root --password='", { "Ref" : "DBRootPassword" }, "' < /tmp/setup.mysql || error_exit 'Failed to initialize database'\n",
  +
  +
"# Configure the PHP application - in this case, fixup the page with the right references to the database\n",
  +
"sed -i \"s/REPLACE_WITH_DATABASE/localhost/g\" /var/www/html/index.php\n",
  +
"sed -i \"s/REPLACE_WITH_DBUSER/root/g\" /var/www/html/index.php\n",
  +
"sed -i \"s/REPLACE_WITH_DBPASSWORD/", { "Ref" : "DBRootPassword" }, "/g\" /var/www/html/index.php\n",
  +
  +
"echo interface \"eth0\" > /etc/dhcp/dhclient-eth0.conf \n",
  +
"sed -i \"s/localhost.localdomain/", { "Ref" : "HostName" }, "/g\" /etc/sysconfig/network\n",
  +
"/bin/hostname ", { "Ref" : "HostName" }, "\n",
  +
"echo " , { "Ref" : "PuppetMasterIPAddress" }," ", { "Ref" : "PuppetMasterDNSName" }, ">> /etc/hosts\n",
  +
"rm -rf /var/lib/puppet/ \n",
  +
"/usr/bin/wget http://", { "Ref" : "PuppetMasterDNSName" },"/puppet/puppet_cert/puppet.tar.gz -O /puppet.tar.gz \n",
  +
"tar -xvf puppet.tar.gz \n",
  +
"chown puppet:puppet /var/lib/puppet/ -Rc \n",
  +
"/usr/sbin/puppetd --server ", { "Ref" : "PuppetMasterDNSName" }, " --verbose --test --no-daemonize --debug \n",
  +
" sleep 60 \n",
  +
"/usr/bin/chef-solo -l debug -c /etc/chef/solo.rb -j /etc/chef/run_list.syslog-ng.json \n",
  +
" sleep 10 \n",
  +
"/usr/bin/chef-solo -l debug -c /etc/chef/solo.rb -j /etc/chef/run_list.tomcat.json \n",
  +
  +
"# All is well so signal success\n",
  +
"/opt/aws/bin/cfn-signal -e 0 -r \"LAMP Stack setup complete\" '", { "Ref" : "WaitHandle" }, "'\n"
  +
]]}}
  +
}
  +
},
  +
  +
"WaitHandle" : {
  +
"Type" : "AWS::CloudFormation::WaitConditionHandle"
  +
},
  +
  +
"WebServerSecurityGroup" : {
  +
"Type" : "AWS::EC2::SecurityGroup",
  +
"Properties" : {
  +
"GroupDescription" : "Enable HTTP access via port 80, ssh via 22",
  +
"SecurityGroupIngress" : [
  +
{"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"},
  +
{"IpProtocol" : "tcp", "FromPort" : "8080", "ToPort" : "8080", "CidrIp" : "0.0.0.0/0"},
  +
{"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : "0.0.0.0/0"}
  +
]
  +
}
  +
}
  +
},
  +
  +
"Outputs" : {
  +
"WebsiteURL" : {
  +
"Value" : { "Fn::Join" : [ "", [ "http://", { "Fn::GetAtt" : [ "ElasticLoadBalancer", "DNSName" ]}]]},
  +
"Description" : "Application URL"
  +
}
  +
}
  +
  +
}
  +
</PRE>
 
==Ссылки==
  
==Ссылки==
 
http://www.devopscloud.com/05.01.html
  
http://www.devopscloud.com/05.01.html

Версия 18:03, 20 ноября 2012

EC2 Cloud Formation Template

Весь темрлейт тут: http://wiki.sirmax.noname.com.ua/index.php/EC2_cloudFormationTemplate_Example
Ниже разбор "По частям", насколько я сам за это время смог разобраться.

Задача

Требуется установить и настроить кластер из N машин. На клестре установить тестовое java-приложение. Настроить балансировку нагрузки. Число машин N в кластере должно изменяться динамически в зависимости от нагрузки. Для установки использовать средства амазона - CloudFormationTemplate. Т.к. задача тестовая то применить chef-solo и puppet для разварачивания сервисов. puppet-сервер имеется - настроенный и сконфигурированный.

CloudFormationTemplate

Это такая штука - позволяет описать конфигурацию стека машин (т.е. как я понимаю - группы машин! а не отдельного инстанса) в формате json (см. ссылку в начале). Формат довольно замороченный и для понимания не так уж и прост.

Подготовка управляющей ноды

Все действия мо мтеком будем производить с управляющей ноды. Опишу ее конфигурацию.

rpm

я поставил следующий набор пакетов для работы с амазоном: 

aws-amitools-ec2.noarch
aws-apitools-cfn.noarch
aws-apitools-common.noarch
aws-apitools-iam.noarch
aws-apitools-as.noarch
aws-apitools-ec2.noarch
aws-apitools-elb.noarch
aws-apitools-mon.noarch
aws-apitools-rds.noarch
aws-cfn-bootstrap.noarch
aws-scripts-ses.noarch

Окружение

как я уже писал:
http://wiki.sirmax.noname.com.ua/index.php/EC2
нужно сконфигурировать окружение.
Принципиальной разницы нет - тот же набор ключей и сертефикатов. Переменные окружениея выглядят так: 


export EC2_PRIVATE_KEY=$HOME/keys/pk-nocrypt-XXXXXXXXXXXXXXX.pem
export EC2_CERT=$HOME/keys/cert-XXXXXXXXXXXXXXX.pem
export AWS_PRIVATE_KEY=$HOME/keys/pk-nocrypt-XXXXXXXXXXXXXXX.pem
export AWS_CERT=$HOME/keys/cert-XXXXXXXXXXXXXXX.pem
export JAVA_HOME=/usr/lib/jvm/jre-1.6.0-openjdk.x86_64/

export AWS_CLOUDFORMATION_HOME=/opt/aws/apitools/cfn-1.0.11/
export EC2_HOME=/opt/aws
AWS_CREDENTIAL_FILE=$HOME/keys/aws_cred

export PATH=${EC2_HOME}:${AWS_CLOUDFORMATION_HOME}:${PATH}

aws_cred - файл с логином и паролем. т.е. с ключем и id что впрочем одно и то же. 

AWSAccessKeyId=XXXXXXXXXXXXXXXXX
AWSSecretKey=YYYYYYYYYYYYYYYYYYYYYYYYYYYYY

Темплейт (по шагам)

Разбираем по шагам. В следующей секции JSON будет не совсем валидный - т.к. разбит на разные секции. Копировать внимательно.

Parameters

Секция параметры - это собственно параметры которые можно переопределить при создании стека. Довольно удобно. Я определил для всех дефолтные значениея - и в реальности их не переопределяю. но это делает темплейт более легко переносимым.
Секция начинаеся, собственно, с ключевого слова: 

"Parameters" : {

ХостНейм - тот хлостнейм который я хочу иметь на ВСЕХ нодах кластера. Это важно для паппета - что бы отработал сертефикат, привязанный к хостнейму. Других причин назначать одинаковый хостнейм нет. 

    "HostName": {
      "Description" : "Local Host Name (for puppet auth)",
      "Type": "String",
      "Default": "testtomcatnode.test.com"
    },

Параметры паппет-сервера - днс-имя и ip адрес. Нужны для того что бы стянуть с паппет-сервера конфигурацию. Т.к. на паппет-сервере сертефикат тоже привязан к его хостнейму а ip может меняться (например при изменении типа инстанса) то храню оба параметра. Ниже - добавляю запись в /etc/hosts 

    "PuppetMasterDNSName": {
      "Description" : "The PuppetMaster DNS name",
      "Type": "String",
      "Default": "ip-10-117-81-201.ec2.internal"
    },

    "PuppetMasterIPAddress": {
      "Description" : "The PuppetMaster IP address",
      "Type": "String",
      "Default": "10.XX.XX.XX"
    },

Ключ - ссылка на пре-конфигурированный ssh-ключ. Собственно это видно в комментарии. 

    "KeyName" : {
      "Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",
      "Type" : "String",
      "Default" :  "hp"
    },

Пароль базы данных - т.к. это тестовая инсталяция для демонстрации то кроме томкета я ставлю апач php mysql. В качестве источника вдохнования я использовал LAMP Template. 

    "DBRootPassword": {
      "NoEcho": "true",
      "Description" : "Root password for MySQL",
      "Default" : "admin",
      "Type": "String",
      "MinLength": "1",
      "MaxLength": "41",
      "AllowedPattern" : "[a-zA-Z0-9]*",
      "ConstraintDescription" : "must contain only alphanumeric characters."
    },

Тип инстанса - у меня самый простой т.к. это тест. 

    "InstanceType" : {
      "Description" : "WebServer EC2 instance type",
      "Type" : "String",
      "Default" : "t1.micro",
      "AllowedValues" : [ "t1.micro","m1.small","m1.medium","m1.large","m1.xlarge","m2.xlarge","m2.2xlarge","m2.4xlarge","c1.medium","c1.xlarge","cc1.4xlarge","cc2.8xlarge","cg1.4xlarge"],
      "ConstraintDescription" : "must be a valid EC2 instance type."
    }

Это апппендикс закрывающий секцию параметров. 

 },

 "Mappings" : {
    "AWSInstanceType2Arch" : {
      "t1.micro"    : { "Arch" : "64" },
      "m1.small"    : { "Arch" : "64" },
      "m1.medium"   : { "Arch" : "64" },
      "m1.large"    : { "Arch" : "64" },
      "m1.xlarge"   : { "Arch" : "64" },
      "m2.xlarge"   : { "Arch" : "64" },
      "m2.2xlarge"  : { "Arch" : "64" },
      "m2.4xlarge"  : { "Arch" : "64" },
      "c1.medium"   : { "Arch" : "64" },
      "c1.xlarge"   : { "Arch" : "64" },
      "cc1.4xlarge" : { "Arch" : "64HVM" },
      "cc2.8xlarge" : { "Arch" : "64HVM" },
      "cg1.4xlarge" : { "Arch" : "64HVM" }
    },

    "AWSRegionArch2AMI" : {
      "us-east-1"      : { "32" : "ami-31814f58", "64" : "ami-1b814f72", "64HVM" : "ami-0da96764" },
      "us-west-2"      : { "32" : "ami-38fe7308", "64" : "ami-30fe7300", "64HVM" : "NOT_YET_SUPPORTED" },
      "us-west-1"      : { "32" : "ami-11d68a54", "64" : "ami-1bd68a5e", "64HVM" : "NOT_YET_SUPPORTED" },
      "eu-west-1"      : { "32" : "ami-973b06e3", "64" : "ami-953b06e1", "64HVM" : "NOT_YET_SUPPORTED" },
      "ap-southeast-1" : { "32" : "ami-b4b0cae6", "64" : "ami-beb0caec", "64HVM" : "NOT_YET_SUPPORTED" },
      "ap-northeast-1" : { "32" : "ami-0644f007", "64" : "ami-0a44f00b", "64HVM" : "NOT_YET_SUPPORTED" },
      "sa-east-1"      : { "32" : "ami-3e3be423", "64" : "ami-3c3be421", "64HVM" : "NOT_YET_SUPPORTED" }
    }
  },

   
  "Resources" : {     

    "CfnUser" : {
      "Type" : "AWS::IAM::User",
      "Properties" : {
        "Path": "/",
        "Policies": [{
          "PolicyName": "root",
          "PolicyDocument": { "Statement":[{
            "Effect":"Allow",
            "Action":"cloudformation:DescribeStackResource",
            "Resource":"*"
          }]}
        }]
      }
    },

    "HostKeys" : {
      "Type" : "AWS::IAM::AccessKey",
      "Properties" : {
        "UserName" : {"Ref": "CfnUser"}
      }
    },

    "ElasticLoadBalancer" : {
      "Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
      "Properties" : {
        "AvailabilityZones" : { "Fn::GetAZs" : "" },
        "Listeners" : [ {
          "LoadBalancerPort" : "80",
          "InstancePort" : "8080",
          "Protocol" : "HTTP"
        } ],
        "HealthCheck" : {
          "Target" : "HTTP:80/",
          "HealthyThreshold" : "3",
          "UnhealthyThreshold" : "5",
          "Interval" : "30",
          "Timeout" : "5"
        }
      }
    },

    "WebServerAutoScailingGroup" : {
      "Type" : "AWS::AutoScaling::AutoScalingGroup",
      "Properties" : {
        "AvailabilityZones" : { "Fn::GetAZs" : ""},
        "LaunchConfigurationName" : { "Ref" : "WebServerLaunchConfig" },
        "MinSize" : "1",
        "MaxSize" : "3",
        "LoadBalancerNames" : [ { "Ref" : "ElasticLoadBalancer" } ]
      }
    },

    "WebServerScaleUpPolicy" : {
      "Type" : "AWS::AutoScaling::ScalingPolicy",
      "Properties" : {
        "AdjustmentType" : "ChangeInCapacity",
        "AutoScalingGroupName" : { "Ref" : "WebServerAutoScailingGroup" },
        "Cooldown" : "60",
        "ScalingAdjustment" : "1"
      }
    },

 
   "WebServerScaleDownPolicy" : {
      "Type" : "AWS::AutoScaling::ScalingPolicy",
      "Properties" : {
        "AdjustmentType" : "ChangeInCapacity",
        "AutoScalingGroupName" : { "Ref" : "WebServerAutoScailingGroup" },
        "Cooldown" : "60",
        "ScalingAdjustment" : "-1"
      }
    },

    "CPUAlarmHigh": {
     "Type": "AWS::CloudWatch::Alarm",
     "Properties": {
        "AlarmDescription": "Scale-up if CPU > 90% for 60 sec",
        "MetricName": "CPUUtilization",
        "Namespace": "AWS/EC2",
        "Statistic": "Average",
        "Period": "60",
        "EvaluationPeriods": "2",
        "Threshold": "90",
        "AlarmActions": [ { "Ref": "WebServerScaleUpPolicy" } ],
        "Dimensions": [
          {
            "Name": "AutoScalingGroupName",
            "Value": { "Ref": "WebServerAutoScailingGroup" }
          }
        ],
        "ComparisonOperator": "GreaterThanThreshold"
      }
    },

    "CPUAlarmLow": {
     "Type": "AWS::CloudWatch::Alarm",
     "Properties": {
        "AlarmDescription": "Scale-down if CPU < 70% for 1 minutes",
        "MetricName": "CPUUtilization",
        "Namespace": "AWS/EC2",
        "Statistic": "Average",
        "Period": "60",
        "EvaluationPeriods": "2",
        "Threshold": "70",
        "AlarmActions": [ { "Ref": "WebServerScaleDownPolicy" } ],
        "Dimensions": [
          {
            "Name": "AutoScalingGroupName",
            "Value": { "Ref": "WebServerAutoScailingGroup" }
          }
        ],
        "ComparisonOperator": "LessThanThreshold"
      }
    },

    "WebServerLaunchConfig": {  
      "Type" : "AWS::AutoScaling::LaunchConfiguration",
      "Metadata" : {
        "Comment1" : "this is test config",

        "AWS::CloudFormation::Init" : {
          "config" : {

            "packages" : {
             "rubygems" : {
                "chef" : [ "0.10.2" ]
	      },

              "yum" : {
                "puppet"       : [],
                "mc"           : [],
                "tomcat7"      : [],
                "nginx"        : [],
                "mysql"        : [],
                "mysql-server" : [],
                "mysql-libs"   : [],
                "httpd"        : [],
                "php"          : [],
                "php-mysql"    : [],
                "gcc-c++"      : [],
                "ruby-devel"   : [],
                "make"         : [],
                "autoconf"     : [],
                "automake"     : [],
                "rubygems"     : []

              }
            },

            "sources" : {
              "/var/www/html" : "https://s3.amazonaws.com/cloudformation-examples/CloudFormationPHPSample.zip"
            },

            "files" : {
              "/etc/chef/solo.rb" : {
                "content" : { "Fn::Join" : ["", [
                  "log_level :info\n",
                  "log_location STDOUT\n",
                  "file_cache_path \"/var/chef-solo\"\n",
                  "cookbook_path \"/var/chef-solo/cookbooks\"\n",
                  "json_attribs \"/etc/chef/node.json\"\n"
                ]] },
                "mode"  : "000644",
                "owner" : "root",
                "group" : "root"
              },

              "/tmp/setup.mysql" : {
                "content" : "CREATE DATABASE lampdb;\n",
                "mode"    : "000644",
                "owner"   : "root",
                "group"   : "root"
              },

	      "/etc/yum.repos.d/epel.repo" : {
                "source" : "https://s3.amazonaws.com/cloudformation-examples/enable-epel-on-amazon-linux-ami",
                "mode"   : "000644",
                "owner"  : "root",
                "group"  : "root"
              },
<PRE>

             "/etc/puppet/puppet.conf" : {
               "content" : { "Fn::Join" : ["", [
                 "[main]\n",
                 "   logdir=/var/log/puppet\n",
                 "   rundir=/var/run/puppet\n",
                 "   ssldir=$vardir/ssl\n",
                 "   pluginsync=true\n",
                 "[agent]\n",
                 "   classfile=$vardir/classes.txt\n",
                 "   localconfig=$vardir/localconfig\n",
                 "   server=",{ "Ref" : "PuppetMasterDNSName" },"\n"
               ]] },
               "mode" : "000644",
               "owner" : "root",
               "group" : "root"
             }

}, 

            "services" : {
              "sysvinit" : {  
                "mysqld" : {
                  "enabled"       : "true",
                  "ensureRunning" : "true"                
                },
                "httpd" : {
                  "enabled"       : "true",
                  "ensureRunning" : "true"                
                }
              }
            }
          }
        }
      },

      "Properties": {
        "ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
                          { "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] },
        "InstanceType"   : { "Ref" : "InstanceType" },
	"KeyName" : { "Ref" : "KeyName" },
        "SecurityGroups" : [ {"Ref" : "WebServerSecurityGroup"} ],

        "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
          "#!/bin/bash -v\n",
          "yum update -y aws-cfn-bootstrap\n",

          "# Helper function\n",
          "function error_exit\n",
          "{\n",
          "  /opt/aws/bin/cfn-signal -e 1 -r \"$1\" '", { "Ref" : "WaitHandle" }, "'\n",
          "  exit 1\n",
          "}\n",

          "# Install LAMP packages\n",
          "#/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackName" }, " -r WebServer             ",  "--access-key ", { "Ref" : "HostKeys" }, " --secret-key ", {"Fn::GetAtt": ["HostKeys", "SecretAccessKey"]}, " --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",
          " /opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackName" }, " -r WebServerLaunchConfig ",  "--access-key ", { "Ref" : "HostKeys" }, " --secret-key ", {"Fn::GetAtt": ["HostKeys", "SecretAccessKey"]}, " --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",


          "# Setup MySQL, create a user and a database\n",
          "mysqladmin -u root password '", { "Ref" : "DBRootPassword" }, "' || error_exit 'Failed to initialize root password'\n",
          "mysql -u root --password='", { "Ref" : "DBRootPassword" }, "' < /tmp/setup.mysql || error_exit 'Failed to initialize database'\n",

          "# Configure the PHP application - in this case, fixup the page with the right references to the database\n",
          "sed -i \"s/REPLACE_WITH_DATABASE/localhost/g\" /var/www/html/index.php\n",
          "sed -i \"s/REPLACE_WITH_DBUSER/root/g\" /var/www/html/index.php\n",
          "sed -i \"s/REPLACE_WITH_DBPASSWORD/", { "Ref" : "DBRootPassword" }, "/g\" /var/www/html/index.php\n",

	  "echo interface \"eth0\" > /etc/dhcp/dhclient-eth0.conf \n",
          "sed -i \"s/localhost.localdomain/", { "Ref" : "HostName" }, "/g\" /etc/sysconfig/network\n",
	  "/bin/hostname  ",  { "Ref" : "HostName" }, "\n",
	  "echo " , { "Ref" : "PuppetMasterIPAddress" }," ", { "Ref" : "PuppetMasterDNSName" }, ">> /etc/hosts\n",
	  "rm -rf /var/lib/puppet/ \n",
	  "/usr/bin/wget http://", { "Ref" : "PuppetMasterDNSName" },"/puppet/puppet_cert/puppet.tar.gz -O /puppet.tar.gz \n",
          "tar -xvf puppet.tar.gz  \n",
          "chown puppet:puppet /var/lib/puppet/ -Rc \n",
          "/usr/sbin/puppetd --server ", { "Ref" : "PuppetMasterDNSName" }, " --verbose --test --no-daemonize  --debug \n",
	  " sleep 60 \n",
	  "/usr/bin/chef-solo -l debug -c /etc/chef/solo.rb -j /etc/chef/run_list.syslog-ng.json  \n",
	  " sleep 10 \n",
	  "/usr/bin/chef-solo -l debug -c /etc/chef/solo.rb -j /etc/chef/run_list.tomcat.json \n",

          "# All is well so signal success\n",
          "/opt/aws/bin/cfn-signal -e 0 -r \"LAMP Stack setup complete\" '", { "Ref" : "WaitHandle" }, "'\n"
        ]]}}
      }
    },

    "WaitHandle" : {
      "Type" : "AWS::CloudFormation::WaitConditionHandle"
    },
      
    "WebServerSecurityGroup" : {
      "Type" : "AWS::EC2::SecurityGroup",
      "Properties" : {
        "GroupDescription" : "Enable HTTP access via port 80, ssh via 22",
        "SecurityGroupIngress" : [
          {"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"},
          {"IpProtocol" : "tcp", "FromPort" : "8080", "ToPort" : "8080", "CidrIp" : "0.0.0.0/0"},
          {"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : "0.0.0.0/0"}
        ]
      }      
    }
  },    

  "Outputs" : {
    "WebsiteURL" : {
      "Value" :  { "Fn::Join" : [ "", [ "http://", { "Fn::GetAtt" : [ "ElasticLoadBalancer", "DNSName" ]}]]},
      "Description" : "Application URL"
    }
  }

}

Ссылки

http://www.devopscloud.com/05.01.html

Источник — https://noname.com.ua/mediawiki/index.php?title=EC2_cloudFormationTemplate&oldid=6026