using devops tools to achieve continuous integration
Post on 10-May-2015
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Using DevOps Tools to Achieve Continuous Integration
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Speakers
Kyle KelleyDeveloper Support Engineer
@rgbkrk
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Ryan Richard, RHCADevOps Automation Team
Lead
@rackninja
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First, a precursor
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Why are we here?
•We are all building up similar systems
•Similar configurations, minor tweaks
•Want:
•More time for applications and business
•Less time doing SysOps
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Keep Deploying!
•Let’s keep that product going
•Let’s keep delivering!
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What can we do?
•Write tests
•Use Continuous Integration
•Use version control, particularly git
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Let’s Test!
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Object Placeholder
Downtime
•It’s going to happen
•Assume failure
•Have a rollback strategy
-for your application
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Testing with Open Source Tools
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Minimal .travis.yml
language: python
python:
– “2.6”
– “2.7”
– “3.2”
– “3.3”
# install dependencies
install: “pip install .”
# run tests
script: nosetests
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Need more build power?
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How the DevOps Automation Service tests our cookbooks
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Practical examples with Chef
•Our pipeline for testing cookbooks
•Testing your chef powered infrastructure
Our CI pipeline for Chef cookbooks
CI serverJenkins
Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional testsTest-kitchen + serverspec
Our CI pipeline for Chef cookbooks
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional testsTest-kitchen + serverspec
Thor
Human/automated
Post Steps
Final
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Two modes of application delivery
Webhook Cookbook
Python MongoSupervisord
• Build an application cookbook that can deploy latest version of the application/artifact (chef specific)
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Two modes of application delivery
Webhook Cookbook
Python MongoSupervisord
• Build an application cookbook that can deploy latest version of the application/artifact (chef specific)
• External workflow for application delivery• (Capistrano, fabric, etc).
Application Cookbook Workflow
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Application Cookbook Workflow
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional testsTest-kitchen + serverspecDo not destroy instance
Application Cookbook Workflow
CI serverJenkins
WorkflowRake
Ruby Syntax/lint
Chef Syntax/lintFoodcritic
Unit testChefspec
Functional testsTest-kitchen + serverspecDo not destroy instance
Jenkins steps or additional jobs:Integration tests, load tests, user tests, etc
Human/automated
Post Steps
Final
Deployment Workflow Model
CI serverJenkins
Chef WorkflowTest-kitchen + serverspecDo not destroy instance
Deployment Workflow Model
CI serverJenkins
Chef WorkflowTest-kitchen + serverspecDo not destroy instance
Additional JobsDeployment workflow executed
Deployment Workflow Model
CI serverJenkins
Chef WorkflowTest-kitchen + serverspecDo not destroy instance
Additional JobsDeployment workflow executed
Integration tests, load tests, user tests, etc. Additional Jobs
Deployment Workflow Model
CI serverJenkins
Chef Workflow
FinalHuman/automated
Test-kitchen + serverspecDo not destroy instance
Additional JobsDeployment workflow executed
Integration tests, load tests, user tests, etc. Additional Jobs
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