Adam Kentosh - 12-factor assessment

Transcript

1. CLOUD IS ABOUT HOW COMPUTING IS DONE, NOT WHERE Pivotal TWELVE-FACTOR APP ASSESSMENT
2. TWELVE-FACTOR APP ASSESSMENT CLOUD-NATIVE APPLICATION ASSESSMENT ▸ Based on twelve-factor app methodology ▸ Answers questions around what to migrate
3. TWELVE-FACTOR APP ASSESSMENT TWELVE-FACTOR APP ▸ Methodology for building cloud-native web apps
4. TWELVE-FACTOR APP ASSESSMENT SCORING ▸ Evaluate an app against each of the twelve-factors ▸ Assign a score of 0-1 for each
5. TWELVE-FACTOR APP ASSESSMENT I. CODEBASE ▸ Version controlled, one-to-one correlation Example: Multiple codebases is a distributed system, not an app score = .6
6. TWELVE-FACTOR APP ASSESSMENT II. DEPENDENCIES ▸ Explicitly declare and isolate dependencies EXAMPLE: Pip + wget for external dependency score = .7
7. TWELVE-FACTOR APP ASSESSMENT III. CONFIG ▸ Store config in the environment EXAMPLE: Using java system properties score = .5
8. TWELVE-FACTOR APP ASSESSMENT IV. BACKING SERVICES ▸ Treat backing services as attached resources EXAMPLE: Accessing local file system score = .4
9. TWELVE-FACTOR APP ASSESSMENT V. BUILD, RELEASE, RUN ▸ Strict separation between build, release, and run EXAMPLE: Build rpm, run with startup script score = .8
10. TWELVE-FACTOR APP ASSESSMENT VI. PROCESSES ▸ Processes are stateless and share nothing. EXAMPLE:
 Sticky sessions score = 0
11. TWELVE-FACTOR APP ASSESSMENT VII. PORT BINDING ▸ Export services via port binding EXAMPLE: local MTA instead of a smarthost score = .2
12. TWELVE-FACTOR APP ASSESSMENT VIII. CONCURRENCY ▸ Scale out via the process model EXAMPLE: JVM with large block of system resources score = .3
13. TWELVE-FACTOR APP ASSESSMENT IX. DISPOSABILITY ▸ The entire process is disposable EXAMPLE: Web processes stop listening score = 1
14. TWELVE-FACTOR APP ASSESSMENT X. DEV/PROD PARITY ▸ All environments are as similar as possible. EXAMPLE:
 Using Redis and MySQL but deploy oracle in prod score = .7
15. TWELVE-FACTOR APP ASSESSMENT XI. LOGS ▸ Treat logs as event streams Logging to local file but using Splunk score = .4
16. TWELVE-FACTOR APP ASSESSMENT XII. ADMIN PROCESSES ▸ Run admin/management tasks as one-off processes EXAMPLE: SSH to create Tomcat symlink score = .2
17. TWELVE-FACTOR APP ASSESSMENT SCORING Sum Sum of Squares 0.6 0.6 0.7 0.7 0.5 0.5 0.4 0.4 0.8 0.8 0 0 0.2 0.2 0.3 0.3 1 1 0.7 0.7 0.4 0.4 0.2 0.2 5.8 3.72
18. TWELVE-FACTOR APP ASSESSMENT SCORING ▸ Sum of squares
19. TWELVE-FACTOR APP ASSESSMENT BUSINESS OBJECTIVES ▸ Can take business objectives into consideration.
20. TWELVE-FACTOR APP ASSESSMENT GAP ANALYSIS ▸ Identify quick wins and long polls
21. TWELVE-FACTOR APP ASSESSMENT CONTACT INFORMATION ▸ Adam Kentosh ▸ devops@advizex.com