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Puppet and AWSGetting the Best of Both Worlds
Mike Ryan - Epitech BV23
August2013
CONTACT:[email protected]
Saturday, August 24, 13
EPITECH BV
Hello, I’m Mike2
CONTACT:[email protected]
Sysadmin with a passion for automa2on
Londoner in Amsterdam
Epitech.nl -‐ sysadmin as a service
Saturday, August 24, 13
EPITECH BV
AWS - A very brief introduction
3
CONTACT:[email protected]
EC2 -‐ Elas2c Compute Cloud
AMI -‐ Amazon Machine Images
User Data
Saturday, August 24, 13
EPITECH BV
CloudFormation5
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{ "AWSTemplateFormatVersion" : "2010-09-09", "Description" : "EC2 instance", "Resources" : { "MyEC2Instance" : { "Type" : "AWS::EC2::Instance", "Properties" : { "ImageId" : "ami-79fd7eee", "KeyName" : "my-ssh-key", } } }}
Saturday, August 24, 13
EPITECH BV
6
CONTACT:[email protected]
"Enabled" : "true", "Logging" : { "Bucket" : "webapplication.s3.amazonaws.com", "Prefix" : "webapp-logging/" } } } },
"asgMyAutoScalingGroup": { "Type": "AWS::AutoScaling::AutoScalingGroup", "Properties": { "AvailabilityZones": [ "us-east-1b", "us-east-1c" ], "Cooldown": "300", "DesiredCapacity": "1", "MaxSize": "1", "MinSize": "1", "LaunchConfigurationName": { "Ref": "lcMyLC" }, "LoadBalancerNames": [ { "Ref": "elbMyLB" } ] } }, "s3webapplication": { "Type": "AWS::S3::Bucket" }, "sgwebappsecuritygroup": { "Type": "AWS::EC2::SecurityGroup", "Properties": { "GroupDescription": "for web app", "SecurityGroupIngress": [
Saturday, August 24, 13
EPITECH BV
7
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Bootstrapping an Infrastructure
www.infrastructures.org
Saturday, August 24, 13
EPITECH BV
9
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Files, Services and Packages with cfn-init
"Metadata": { "AWS::CloudFormation::Init": { "config": { "sources" : { "/etc/puppet" : "http://example.com/puppet.tar.gz" }, "packages": { "yum": { "puppet-server": [], }, }, "services": { "sysvinit": { "puppetmaster": { "ensureRunning": "true", "enabled": "true"
Saturday, August 24, 13
EPITECH BV
10
CONTACT:[email protected]
Run a script at launch time with User Data
{ "AWSTemplateFormatVersion" : "2010-09-09", "Description" : "EC2 instance", "Resources" : { "PuppetMasterInstance": { "Type": "AWS::EC2::Instance", "Metadata": { }, "Properties": { "UserData": { "Fn::Base64": { "Fn::Join": [ "", [ "#!/bin/bash\n", "/opt/aws/bin/cfn-init --region ", "\n", "/usr/bin/puppet apply site.pp, "\n" ]...
Saturday, August 24, 13
EPITECH BV
11
CONTACT:[email protected]
cfn-create-stack
cfn-create-stack puppetmaster \--template-file=puppetmaster.json
http://aws.amazon.com/developertools/2555753788650372
http://aws.amazon.com/cli/
Saturday, August 24, 13
EPITECH BV
13
CONTACT:[email protected]
The Hostname Issuemike@ip-10-32-34-116:~$ hostname -fip-10-32-34-116.eu-west-1.compute.internal
Saturday, August 24, 13
EPITECH BV
15
CONTACT:[email protected]
User Data - CloudFormation},"UserData": { "Fn::Base64": { "Fn::Join": [ "", [ “{\”role\”: \”web\”, ”, “\”env\”: \”staging\”} ” ] ] }}
Saturday, August 24, 13
EPITECH BV
16
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include stdlibnode default { $userdata = parsejson($ec2_userdata) $role = userdata[‘role’] $environment = userdata[‘env’]
case $role { ‘web’: { include nginx } ‘db’: { include postgresql } }}
Saturday, August 24, 13
EPITECH BV
19
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Vagrant::Config.run do |config| config.vm.provision :puppet do |puppet| puppet.manifests_path = "../puppet/manifests" puppet.module_path = "../puppet/modules" puppet.manifest_file = "site.pp" puppet.options = "--verbose --debug" puppet.facter = { :ec2_userdata => { :role => "database", :env => "vagrant", }.to_json, :vagrant => "true" } endend
Saturday, August 24, 13
EPITECH BV
21
CONTACT:[email protected]
Broken Puppet Master =Broken Auto Scaling
No
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EPITECH BV
22
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#!/bin/bash
/usr/local/bin/update.sh/usr/bin/puppet apply site.pp
/etc/rc.local
Saturday, August 24, 13
EPITECH BV
23
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But you lose...
Puppet Dashboard
Exported Resources
Stored configs
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EPITECH BV
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env.roledefs = { 'web': ['www1', 'www2', 'www3'], 'db': ['db1', 'db1']}
@roles('db', ‘web’)def run_puppet(): sudo('puppet apply site.pp')
$fab run_puppet #run puppet everywhere$fab run_puppet --roles db # role-specific
Triggering Puppet with Fabric
Saturday, August 24, 13
EPITECH BV
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def configure_roles():
tags = EC2TagManager(AWS_KEY, AWS_SECRET, regions=['eu-west-1'])
roles = {}
for role in [‘db’, ‘web’]: roles[role] = tags.get_instances(role=role) return roles
Triggering Puppet with Fabric
https://github.com/mikery/fabric-ec2
Saturday, August 24, 13
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