What is Devops ? This presentation talks about the story behind devops, key principles, practices and gives you a path to understand how to get started with devops.
14. THEORY OF CONSTRAINT
▸ Identify System’s Constraints
▸ Exploit the Constraint
▸ Subordinate everything to above decision
▸ Elevate the Constraint
▸ Repeat the Process
23. BUILDING TOOLS AND CULTURE TO BRIDGE THE GAP BETWEEN DEV AND OPS
AUTOMATED INFRASTRUCTURE
SHARED VERSION CONTROL
ONE STEP BUILD AND DEPLOY
SHARED METRICS
FEATURE FLAGS
IRC AND IM BOTS
MUTUAL RESPECT
TRUST
HEALTHY ATTITUDE ABOUT FAILURE
AVOIDING BLAME
src: https://www.slideshare.net/jallspaw/10-deploys-per-day-dev-and-ops-cooperation-at-flickr/76
Tools
Culture
26. To achieve their business
goals
CHANGE
to achieve competitive advantage
to survive
to respond to changing customer
needs
Organizations need to
constantly
27. EACH OF THAT CHANGE
TRANSLATES TO A
DEFINING DEVOPS
DEPLOYMENT
28. EACH OF THAT CHANGE
INTRODUCES A
DEFINING DEVOPS
RISK
29. WHILE STILL ACHIEVING
OFFERS A PATH TO REDUCE THE
RISK
DEVOPS
RAPID CHANGE
PRINCIPLES PRACTICES TOOLS
IS A CULTURAL MOVEMENT WHICH
30. METRICS
LEAD TIME TO CHANGE
MEAN TIME TO RECOVER
FREQUENCY OF DEPLOYMENTS
CHANGE FAILURE RATES
41. Source – The DevOps
Handbook
Value Stream Mapping
42. IDENTIFY THE WASTE
WASTE IN SOFTWARE DELIVERY
▸ Over Production: Running tests which need not be run. Component has no
dependencies. Building features not useful for customers.
▸ Waiting : Dev and QA waiting for environment to be available.
▸ Over Processing : Engaging workforce in deployment planning, environment setup,
manual releases.
▸ Defects : Bugs and Rework, Firefighting.
▸ Inventory : Piling up Work in Progress
▸ Waste of Resources : Allocating more than necessary, valuable processing power and
memory
▸ Waste of movement : Exchanging emails, having multiple meetings for deployment
planning
Source : Amit Choudhary https://www.linkedin.com/pulse/20140928153300-27449214-when-i-see-devops-i-see-tps-and-poka-yoke
51. Infrastructure as a
Code (IaaC)
Ability to describe state of infrastructure
Treat it similar to Application Code
Repeatable, Flexible, Automat-able
Consistent Provisioning and Configuration of
Environments
65. Without automated testing continuous
integration is the fastest way to get a big
pile of jump that never compiles or runs
correctly….. !
AUTOMATED TESTING
66. Automated UI Test
Integration Test
Unit Test
Manual Test
Anti Pattern Inverted Test Pyramid
Automated UI
Test
Automated API Test
Automated Service Test
Automated Component Test
Automated Unit Test
Exploratory
Test
10%
67. Continuous Delivery
Extension of Continuous
Integration
Keep the builds green
Always ready to release
Business decides when to
release