PyCon SG 2014

A talk about OpenShift and Python. The talk is getting into the details of OpenShift and how it works so that when you write your application, you know how it is being served up. Beginner to intermediate.

Transcript

1. 1 by Python and OpenShift PyCon SG 2014 Harish Pillay Red Hat @harishpillay hpillay@redhat.com June 19, 2014
2. 2 by What is OpenShift?
3. 3 by OpenShift and Python How it works How it scales Single PaaS everywhere ... And Python!
4. 4 by Public / Hybrid / Private / Virtualization / Bare Metal Your PaaS on your deployment method of choice
5. 5 by RHEL Public / Hybrid / Private / Virtualization / Bare Metal RHEL RHEL The OS Foundation is Red Hat Enterprise Linux (also Fedora and CentOS) • OpenShift is built on instances of Red Hat Enterprise Linux (RHEL) • OpenShift can run anywhere RHEL can run RHEL
6. 6 by OpenShift Broker – Management and Orchestration Engine RHEL Public / Hybrid / Private / Virtualization / Bare Metal OpenShift Nodes – Application Hosting Infrastructure Broker (RHEL) Node (RHEL) Node (RHEL) An OpenShift Broker Manages Multiple OpenShift Nodes
7. 7 by Broker (RHEL) RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Node (RHEL) Node (RHEL) A Node is an Instance of RHEL
8. 8 by RHEL Red Hat Enterprise Linux GEAR Node Public / Hybrid / Private / Virtualization / Bare Metal GEAR GEAR My App Her App His App Broker (RHEL) Node (RHEL) Node (RHEL) OpenShift User Applications Run in Containers called Gears
9. 9 by RHEL Red Hat Enterprise Linux SELinux SELinux SELinux GEAR Node Public / Hybrid / Private / Virtualization / Bare Metal My App Broker (RHEL) Node (RHEL) Node (RHEL) SELinux Security •“Jail” around Gear •MAC instead of DAC •Process/memory protection •Pre-configured for you Gears Use SELinux for Pre-Configured High-Grade Security
10. 10 by RHEL Red Hat Enterprise Linux GEAR Node Public / Hybrid / Private / Virtualization / Bare Metal CGroups CGroups My App Broker (RHEL) Node (RHEL) Node (RHEL) CGroups Resource Mgmt • Sets upper bounds • CPU • Memory • Disk Gears Use Linux CGroups for Resource Management
11. 11 by RHEL Red Hat Enterprise Linux SELinux GEAR Node Public / Hybrid / Private / Virtualization / Bare Metal CGroups GEAR IDLED My App Her App Broker (RHEL) Node (RHEL) Node (RHEL) Idle Gears Can Be “de-hydrated” by the OpenShift Broker
12. 12 by OpenShift/Red Hat is working with Docker to drive converged container technology
13. 13 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Broker (RHEL) Node (RHEL) Node (RHEL) OpenShift Multi-tenancy Provides Density, Efficiency, and Security
14. 14 by Let's look at this from the Developer/Operator's perspective
15. 15 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal DEVELOPER Broker (RHEL) Node (RHEL) Node (RHEL) Developer Workflow A Developer creates a new application  OpenShift creates a GEAR
16. 16 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal MY GEAR DEVELOPER cron logs sshd Broker (RHEL) Node (RHEL) Node (RHEL) Gears Created via Web, CLI, Eclipse -RESTful call to Broker REST Web Console Eclipse IDE Cmd Line
17. 17 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Django DEVELOPER MY GEAR cron logs sshd Broker (RHEL) Node (RHEL) Node (RHEL) OpenShift Automates Gear Configuration via Cartridges CARTRIDGES are how OpenShift installs Languages & Middleware REST Web Console Eclipse IDE Cmd Line
18. 18 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Django DEVELOPER MySQL MY GEAR cron logs sshd Broker (RHEL) Node (RHEL) Node (RHEL) OpenShift Automates Gear Configuration via Cartridges REST Web Console Eclipse IDE Cmd Line
19. 19 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Django DEVELOPER MySQL MY GEAR cron logs sshd Broker (RHEL) Node (RHEL) Node (RHEL) Etc. Etc. Ruby Python PHP Java Postgres MySQL JBoss EWS JBoss EAP CUSTOM Cartridge Types REST Web Console Eclipse IDE Cmd Line
20. 20 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Django Code GIT Repo DEVELOPER GIT/SSH MySQL MY GEAR cron logs sshd Broker (RHEL) Node (RHEL) Node (RHEL) Now, Code and Push Developer pushes application code via GIT source code management system REST Web Console Eclipse IDE Cmd Line
21. 21 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Django Code Git Repo DEVELOPER GIT/SSH cron jenkins logs sshd MySQL Jenkins MY GEAR Broker (RHEL) Node (RHEL) Node (RHEL) OpenShift Automates Build, Test with Maven and Jenkins for CI Maven REST Web Console Eclipse IDE Cmd Line REST
22. 22 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Django Code Git Repo DEVELOPER USER GIT/SSH cron logs sshd MySQL HTTP/S MY GEAR Broker (RHEL) Node (RHEL) Node (RHEL) HTTP(s) Served from Gears jenkins Jenkins Maven REST Web Console Eclipse IDE Cmd Line
23. 23 by Real-world App Dev – PaaS across the life-cycle Nodes Dev Dev QA Release Mgmt/Ops Nodes QA Nodes Production Git Git Git Git Git HTTP/S USER
24. 24 by RHEL Red Hat Enterprise Linux Node PRODUCTION INFRASTRUCTURE/CLOUD MANY USERS MySQL MY AUTO-SCALED APP Django cron logs sshd Django cron logs sshd Django cron logs sshd HA-Proxy HTTP/S Broker (RHEL) Node (RHEL) Node (RHEL) OpenShift Automates Application Scaling!
25. 25 by Django cron logs sshd Django cron logs sshd HA-Proxy RHEL Red Hat Enterprise Linux Node PRODUCTION INFRASTRUCTURE/CLOUD MANY USERS MySQL MY AUTO-SCALED APP Django cron logs sshd HA-Proxy Broker (RHEL) Node (RHEL) Node (RHEL) External Load Balancer Integration Production Routing/LB Hardware HTTP/S • Multiple HA-Proxy • Integration with Existing Web Routing Infrastructure
26. 26 by All Together Now
27. 27 by RHEL Red Hat Enterprise Linux Node Public / Hybrid / Private / Virtualization / Bare Metal Django Code Git Repo DEVELOPER USER GIT/SSH cron logs sshd MySQL HTTP/S MY GEAR Broker (RHEL) Node (RHEL) Node (RHEL) REST SELinux GE AR My App jenkins Jenkins Maven CGroups Web Console Eclipse IDE Cmd Line
28. 28 by OpenShift Architecture
29. 29 by BROKER The Broker is responsible for state, DNS, and authentication. The OpenShift Broker – The PaaS Controller Subsystem
30. 30 by OpenShift Architecture
31. 31 by NODE The node hosts are responsible for holding application gears. The OpenShift Nodes – The Application Host Systems
32. 32 by Communication from external clients occurs through the REST API The Broker then communicates through the messaging service to nodes Control Communications – How Commands Are Delivered To the PaaS
33. 33 by Application Communications – Part 1 – Incoming Requests to User Applications
34. 34 by Application Communications – Part 2 – Inter-Gear Communications
35. 35 by So what?
36. 36 by WIIFM?
37. 37 by Polyglot
38. 38 by
39. 39 by Choose Your PaaS Strategy (or use all of them) Public PaaS Service On- premise or Private PaaS Software Open Source PaaS Project
40. 40 by Single PaaS view Nodes Origin Dev QA Release Mgmt/Ops Nodes Enterprise Nodes Online Git Git Git Git Git HTTP/S USERS HTTP/S
41. 41 by Tip: start with OpenShift Online
42. 42 by Go to: OpenShift.com
43. 43 by Demo Time (creating an instance using python ...)
44. 44 by Get the OpenShift Origin image here http://openshift.github.io/ (or from me)
45. 45 by • Choose your PaaS model
46. 46 by • Choose your PaaS model • OpenShift offers one common platform whether private, hybrid or public
47. 47 by • Choose your PaaS model • OpenShift offers one common platform whether private, hybrid or public • Go solve world problems!
48. 48 by Thank you! hpillay@redhat.com @harishpillay