groovy devops in the cloud
Post on 05-Dec-2014
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Groovy DevOps in theCloud
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About us02
Luciano Fiandesio
Bio: Developer, speaker, author, kitchen hacker
Company: Aestas/IT (http://aestasit.com)
E-mail: luciano@aestasit.com
Linkedin: http://www.linkedin.com/in/lucianofiandesio
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Andrey Adamovich
Bio: Developer, coach, speaker, author
Company: Aestas/IT (http://aestasit.com)
E-mail: andrey@aestasit.com
Linkedin: http://www.linkedin.com/in/andreyadamovich
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What's this presentation about?
Our take on:
DevOps
Software Provisioning
Continuous Integration
Continuous Delivery
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Technologies
AWS - http://aws.amazon.com
Groovy - http://groovy.codehaus.org
Gradle - http://gradle.org
Jenkins - http://jenkins-ci.org
Puppet - http://puppetlabs.com
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Developers +Operations =
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Silos
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Conflicts09
Risk
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Agile
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What is DevOps?
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Infrastructure as Code
Automate the provisioning and maintenance of servers:
Build from source control
Utilize Open Source tools
Ensure testability
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Configuration propagation
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Changes
No Manual Changes!
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Building a DevOps toolkit
Automation is key
We are JVM hackers
Fragmented ecosystem
Full-stack approach
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Sshoogr
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Sshoogr Features
Remote command execution
File uploading/downloading
Tunneling
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Sshoogr Example I
remoteSession {
url = 'user2:654321@localhost:2222'
exec 'rm -rf /tmp/*'
exec 'touch /var/lock/my.pid'
remoteFile('/var/my.conf').text = "enabled=true"
}
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Sshoogr Example II
remoteSession {
scp {
from { localDir "$buildDir/application" }
into { remoteDir '/var/bea/domain/application' }
}
}
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Sshoogr Example III
def result = exec(command: '/usr/bin/mycmd',
failOnError: false, showOutput: false)
if (result.exitStatus == 1) {
result.output.eachLine { line ->
if (line.contains('WARNING')) {
throw new RuntimeException("Warning!!!")
}
}
}
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Why Groovy?
Groovy is perfect choice for scripting
Very mature, concise syntax
Extremely easy to produce DSL
We wrote a book about it!
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Shameless plug
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Puppet24
Why Puppet?
More mature than competition
Large community
Ruby-based DSL
No need to learn Ruby ;)
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Puppet example
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Puppet provisioning
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Puppet provisioning
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Puppet provisioning
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Puppet provisioning
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Puppet state management
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Puppet state management
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Puppet state management
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Puppet modules
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Puppet modules
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Puppet modules
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Continuous Integration
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Why Jenkins?
De-facto standard
Stable
There is a plugin for that!
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Services Partner
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Gradle Example I
task uploadModules << {
remoteSession {
exec 'rm -rf /tmp/repo.zip'
scp {
from { localFile "${buildDir}/repo.zip" }
into { remoteDir "/root" }
}
...
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Gradle Example I
...
exec 'rm -rf /etc/puppet/modules'
exec 'unzip /tmp/repo.zip -d /etc/puppet/modules'
}
}
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Gradle Example II
task puppetApply(dependsOn: uploadModules) << {
remoteSession {
scp {
from { localFile "${buildDir}/setup.pp" }
into { remoteDir "/tmp" }
}
exec 'puppet apply /tmp/setup.pp'
}
}
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Jenkins example
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In the meanwhile...
We started developing complex Puppet modules
Modules needs proper testing
...on different platforms
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Do you test, right?
How to test this stuff?
How to reuse a JUnit approach to testing?
We wanted things to be SIMPLE!
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PuppetUnit
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PUnit
Simple testing tool for verifying remote server state
Uses sshoogr and JUnit
Reuse reporting features of JUnit and Jenkins
As simple as ...
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PUnit Example I
class DerbyInstallTest
extends BasePuppetIntegrationTest {
@Before
void installDerby() {
apply("include derby")
}
...
}
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PUnit Example II
@Test
def void ensureDerbyRunning() {
command('service derby status > derbystatus.log')
assertTrue fileText("/root/derbystatus.log")
.contains('Derby')
assertTrue fileText("/root/derbystatus.log")
.contains('is running.')
}
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PUnit Example III
@Test
def void ensureCanConnect() {
Thread.sleep(10000)
uploadScript()
command('/opt/derby/db-derby-10.9.1.0-bin/bin/ij ' +
'testDataScript.sql > derbytest.log')
...
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PUnit Example III
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// Check if the log of the insert
// operation contains the word ERROR.
assertFalse(
"The script should returne at least one error",
fileText("/root/derbytest.log")
.contains('ERROR')
)
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PUnit Example III
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// Check on data that was inserted into a table.
assertTrue(
"The log should contain a SELECT result",
fileText("/root/derbytest.log")
.contains('Grand Ave.')
)
}
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PUnit
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Nextproblem?
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Scalability
How do we test on different OS?
How do we run parallel tests on multiple architectures?
How do we avoid selling our houses?
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Amazon WebServices
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Elastic Compute Cloud
Mature
Great API
Virtual hardware variety
OS variety
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EC2 Console
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Gramazon
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Gramazon
Groovy based API for interacting with EC2
Integrates with the rest of the stack
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Gramazon Example I
task startInstance(type: StartInstance) {
keyName 'cloud-do'
securityGroup 'cloud-do'
instanceName 'gramazon/cloud-do'
stateFileName 'cloud-do.json'
ami 'ami-6f07e418'
instanceType 't1.micro'
waitForStart true
}
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Gramazon Example II
task terminateInstance(type: TerminateInstance) {
stateFileName 'cloud-do.json'
}
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Costs considerations
Name Compute Units Memory Hourly Cost
t1.micro 2 0.60 GB $0.02
m1.small 1 1.70 GB $0.06
c1.medium 5 1.70 GB $0.14
m1.medium 2 3.75 GB $0.12
m1.large 4 7.50 GB $0.24
c1.xlarge 20 7.00 GB $0.58
m3.xlarge 13 15.00 GB $0.50
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Free tier
750 hours of Amazon EC2 Linux Micro Instance usage (613 MB of
memory and 32-bit and 64-bit platform support)
Enough hours to run continuously each month
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Security considerations
Host operating system
Individual SSH keyed logins
All accesses logged and audited
Customer-generated keypairs
Stateful firewall
Mandatory inbound firewall, default deny mode
Signed API Calls
Require X.509 certificate or secret AWS key
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Imgr
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Imgr
A tool for building images
Inspired by Packer
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Images?
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Supports
Shell
Puppet
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Configuration Example
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The big picture
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Aetomation
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Conclusions
Reuse your existing Java knowledge
...to build a bridge between DEVs and OPs
Reuse development best practices for OPs
Don't be afraid to try new technologies
Automate!
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Readingmaterial
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Groovy 2 Cookbook
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The Phoenix Project
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Continuous Delivery
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Programming Amazon EC2
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Gradle in Action
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Technologies to follow
Vagrant - http://www.vagrantup.com/
Docker - https://www.docker.io/
Packer - http://www.packer.io/
Qemu - http://wiki.qemu.org/Main_Page
jclouds - http://jclouds.apache.org/
Cloudbees - http://www.cloudbees.com/
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One morething...
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It's all OpenSource!
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Source code
Sshoogr: https://github.com/aestasit/sshoogr
Sshoogr Gradle: https://github.com/aestasit/sshoogr-gradle
PUnit: https://github.com/aestasit/puppet-unit
Gramazon: https://github.com/aestasit/gramazon
Imgr: https://github.com/aestasit/imgr
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Seekingcontributors!
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Questions?86
Paldies! Thank you!
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