Automated infrastructure testing - by Ranjib Dey

Automated Infrastructure Testing Ranjib Dey System Administrator, ThoughtWorks

Part 1What we are building?

What you already know?

To Code (develop functionalities)To Test (ensure if its working fine)

To Code (develop functionalities) AutomateTo Test (ensure if its working fine)

Enter DevOps/CD

To Code (develop functionalities)To Test (ensure if its working fine)To Deploy (ensure if it can be released)

To Code (develop functionalities)To Test (ensure if its working fine)AutomateTo Deploy (ensure if it can be released)

To Code (develop functionalities)AutomateTo Test (ensure if its working fine)AutomateTo Deploy (ensure if it can be released)

To CodeAutomate CITo TestAutomateTo Deploy

To CodeAutomate CITo Test CDAutomateTo Deploy

Part 2How it is different?

Tested codeAutomateDeployed code

InfrastructureTested codeAutomateDeployed code

InfrastructureTested code OperationsAutomateDeployed code

InfrastructureTested code OperationsAutomate DataDeployed code

InfrastructureTested code OperationsAutomate DataDeployed code Compliance

InfrastructureTested code OperationsAutomate DataDeployed code Compliance End users

InfrastructureTested code OperationsAutomate DataDeployed code Compliance End users Integrations

On infrastructure

To CodeAutomateTo TestAutomateTo Deploy

To Code AutomateBuild infrastructure To Test Automate To Deploy

To Code AutomateBuild infrastructure To Test AutomateProduction To DeployInfrastructure

Part 3On testing

Tested codeAutomateDeployed code

Tested code Automate Infrastructure as CodeDeployed code

Tested code Automate Infrastructure as CodeDeployed codeCode

Tested code Automate Infrastructure as CodeDeployed codeCode Test

Tested code Automate Infrastructure as CodeDeployed code Unit TestingCode Test

Tested code Automate Infrastructure as CodeDeployed code Unit TestingCode Test Functional Testing

Scenario: Nginx is running as a daemon When I run "ps aux | grep nginx" Then I should see “nginx:master" in the output

Tested code Automate Infrastructure as CodeDeployed code Unit TestingCode Test Functional Testing

Tested code Automate Infrastructure as CodeDeployed code Unit TestingCode Test Functional Testing Integration Testing

describe_recipe nginx:configuration do it installs version 1.0.15 do node[:nginx][:version].should == 1.0.15 file("/etc/nginx/nginx.conf").must_have(:mode, "644") package("nginx").must_be_installed service("nginx").must_be_running endend

Tested code Automate Infrastructure as CodeDeployed code Unit TestingCode Test Functional Testing Monitoring Integration Testing

• Monitoring

Tested code Automate Infrastructure as CodeDeployed code Monitoring Tests Mocks

Tested code Automate Infrastructure as CodeDeployed code Tests Mocks Monitoring Analytics

Part 4Cloud cometh

I see more code

I see more codeI need more tests

Cloud AWS

Cloud AWSRackspace GCE HP Joyent

Oh yeahWe love cross browser testing?

Part 5Lessons learned

Health of infrastructure

Health of infrastructureBattle tested code

Health of infrastructureBattle tested code Thorough Monitoring

• Remember to build feedback system . – Test harness should publish metrics in the same system where ops and project metrics are kept. – Have analytics or trending system on top of the metrics.

Collaborate more withOps.

Some advice• Remember MIME types?• World wont be fully automatic ever. Always automate the most time consuming task first.• No easy way out. The function domain requires you to understand man pages, rfps etc.• Choose a text editor rather than an Window manager based IDE.

References• Infra-automation: http://www.opscode.com/chef/• Monitoring: http://www.nagios.org/• Lint tool: http://acrmp.github.com/foodcritic/• Unit testing: https://github.com/acrmp/chefspec• Functional testing: http://www.cucumber-chef.org/• Integration testing: https://github.com/calavera/minitest-chef-handler

@RanjibDey http://ranjib.posterous.comhttp://www.dzone.com/users/ranjibd dey.ranjib@gmail.com

Automated infrastructure testing - by Ranjib Dey

by bhumika2108 on Nov 02, 2012

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