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Gollum_Single_Instance_With_EBS_Volume.template
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Gollum_Single_Instance_With_EBS_Volume.template
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{
"AWSTemplateFormatVersion" : "2010-09-09",
"Description" : "AWS CloudFormation Sample Template Gollum_Single_Instance_With_EBS_Volume: Gollum is a simple wiki system built on top of Git that powers GitHub Wikis. This template installs a Gollum Wiki stack on a single EC2 instance with an EBS volume for storage and demonstrates using the AWS CloudFormation bootstrap scripts to install the packages and files necessary at instance launch time. **WARNING** This template creates an Amazon EC2 instance and an EBS volume. You will be billed for the AWS resources used if you create a stack from this template.",
"Parameters" : {
"KeyName" : {
"Description" : "Name of an existing EC2 KeyPair to enable SSH access to the instances",
"Type" : "String",
"MinLength": "1",
"MaxLength": "64",
"AllowedPattern" : "[-_ a-zA-Z0-9]*",
"ConstraintDescription" : "can contain only alphanumeric characters, spaces, dashes and underscores."
},
"VolumeSize" : {
"Description" : "WebServer EC2 instance type",
"Type" : "Number",
"Default" : "5",
"MinValue" : "5",
"MaxValue" : "1024",
"ConstraintDescription" : "must be between 5 and 1024 Gb."
},
"InstanceType" : {
"Description" : "WebServer EC2 instance type",
"Type" : "String",
"Default" : "m1.small",
"AllowedValues" : [ "t1.micro","m1.small","m1.medium","m1.large","m1.xlarge","m2.xlarge","m2.2xlarge","m2.4xlarge","m3.xlarge","m3.2xlarge","c1.medium","c1.xlarge","cc1.4xlarge","cc2.8xlarge","cg1.4xlarge"],
"ConstraintDescription" : "must be a valid EC2 instance type."
},
"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" : "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" },
"m3.xlarge" : { "Arch" : "64" },
"m3.2xlarge" : { "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-southeast-2" : { "32" : "ami-b3990e89", "64" : "ami-bd990e87", "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" : {
"WebServer": {
"Type": "AWS::EC2::Instance",
"Metadata" : {
"AWS::CloudFormation::Init" : {
"config" : {
"packages" : {
"yum" : {
"gcc" : [],
"make" : [],
"ruby-devel" : [],
"ruby-rdoc" : [],
"rubygems" : [],
"libxml2-devel": [],
"libxslt-devel": [],
"git" : []
},
"rubygems" : {
"nokogiri" : [],
"rdiscount" : [],
"gollum" : []
}
}
}
}
},
"Properties": {
"ImageId" : { "Fn::FindInMap" : [ "AWSRegionArch2AMI", { "Ref" : "AWS::Region" },
{ "Fn::FindInMap" : [ "AWSInstanceType2Arch", { "Ref" : "InstanceType" }, "Arch" ] } ] },
"InstanceType" : { "Ref" : "InstanceType" },
"SecurityGroups" : [ {"Ref" : "WebServerSecurityGroup"} ],
"KeyName" : { "Ref" : "KeyName" },
"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 Rails packages\n",
"/opt/aws/bin/cfn-init -s ", { "Ref" : "AWS::StackId" }, " -r WebServer ",
" --region ", { "Ref" : "AWS::Region" }, " || error_exit 'Failed to run cfn-init'\n",
"# Wait for the EBS volume to show up\n",
"while [ ! -e /dev/sdh ]; do echo Waiting for EBS volume to attach; sleep 5; done\n",
"# Format the EBS volume and mount it\n",
"mkdir /var/wikidata\n",
"/sbin/mkfs -t ext3 /dev/sdh1\n",
"mount /dev/sdh1 /var/wikidata\n",
"# Initialize the wiki and fire up the server\n",
"cd /var/wikidata\n",
"git init\n",
"gollum --port 80 --host 0.0.0.0 &\n",
"# If all is well so signal success\n",
"/opt/aws/bin/cfn-signal -e $? -r \"Rails application setup complete\" '", { "Ref" : "WaitHandle" }, "'\n"
]]}}
}
},
"WebServerSecurityGroup" : {
"Type" : "AWS::EC2::SecurityGroup",
"Properties" : {
"GroupDescription" : "Enable SSH access and HTTP access on the inbound port",
"SecurityGroupIngress" : [
{"IpProtocol" : "tcp", "FromPort" : "80", "ToPort" : "80", "CidrIp" : "0.0.0.0/0"},
{"IpProtocol" : "tcp", "FromPort" : "22", "ToPort" : "22", "CidrIp" : { "Ref" : "SSHLocation"}}
]
}
},
"DataVolume" : {
"Type" : "AWS::EC2::Volume",
"Properties" : {
"Size" : { "Ref" : "VolumeSize" },
"AvailabilityZone" : { "Fn::GetAtt" : [ "WebServer", "AvailabilityZone" ]},
"Tags" : [{ "Key" : "Usage", "Value" : "Gollum Data Volume" }]
}
},
"MountPoint" : {
"Type" : "AWS::EC2::VolumeAttachment",
"Properties" : {
"InstanceId" : { "Ref" : "WebServer" },
"VolumeId" : { "Ref" : "DataVolume" },
"Device" : "/dev/sdh"
}
},
"WaitHandle" : {
"Type" : "AWS::CloudFormation::WaitConditionHandle"
},
"WaitCondition" : {
"Metadata" : {
"Comment1" : "Note that the WaitCondition is dependent on the volume mount point allowing the volume to be created and attached to the EC2 instance",
"Comment2" : "The instance bootstrap script waits for the volume to be attached to the instance prior to installing Gollum and signalling completion"
},
"Type" : "AWS::CloudFormation::WaitCondition",
"DependsOn" : "MountPoint",
"Properties" : {
"Handle" : {"Ref" : "WaitHandle"},
"Timeout" : "300"
}
}
},
"Outputs" : {
"WebsiteURL" : {
"Value" : { "Fn::Join" : ["", ["http://", { "Fn::GetAtt" : [ "WebServer", "PublicDnsName" ]}]] },
"Description" : "URL for Gollum wiki"
}
}
}