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Agile Devops in the Cloud
Chamith J Kumarage
Member, Cloud Devops Team
WSO2
Outline
• Automation• Monitoring and Analytics• Agile Delivery• Tools and Utilities• Scaling into the cloud• Devops at WSO2
Automation
● Tools that perform functions otherwise done by
humans.
● Task execution ○ Repetitive tasks
● Process flow○ Connects tasks and decisions
● Decision trigger○ When and Why to take action
Automation contd.
● Design for failure
● Validate every operation
● Enforce discipline ( and process )
● Accelerates execution
● Improves agility
Be the automator, without being automated!
Monitoring and Analytics
● Discovery
○ Normal vs abnormal
● Communication
○ Do you understand what it say?
● The big picture
● Root cause analysis
Hint: #monitoringsucks
source: http://www.teachthought.com/technology/the-relationship-between-confusion-and-information/
source: http://www.philcallaway.ab.ca/images/Cartoons/privacy%20cartoon2.jpg
Agile Delivery
● Discoverability
○ Create, Test and Deploy in smaller increments
● Quality
○ Frequent testing, Catch bugs when they are small
● Operations is the first customer
● Continuous delivery or Continuous deployment
Source: http://blog.crisp.se/2013/02/05/yassalsundman/continuous-delivery-vs-continuous-deployment
Tools and Utilities
● Shorten the pipeline from dev -> production
● Enforce best practices and standards
● No need to reinvent the wheel
● Each tool can be a component of a framework
● Documentation is a must
● Has to comply with the ‘bus monkey’ test
Scaling into the Cloud
● Automatic failure detection and prediction
● Self healing at all possible levels
● Use native cloud offerings
● One-Click operations
● Design for failure
● Kill instance test (chaos monkey test) is a must!
Devops at WSO2
● Focused on “one-click” deployments
● Use Puppet and a few homemade tools for automation
● Icinga and Heartbeat Checker for first-level monitoring
● Heavily use Python for automation
● Ruby to extend Puppet features
● Working on getting Continuous deployment to action
We are not there yet :)
Devops at WSO2 contd.
● Primarily use AWS infrastructure technologies
● ~100 EC2 instance
● ~15 RDS instances
● ~140 services
● Ownership: ~65 resources/person
