1. Deploying Services with BOSH
Jeffrey Peckham | Engineer
Cloud Foundry

2. Who Am I? Jeffrey Peckham
– SRE in Higher Education and eCommerce.
2012 – SRE on Production Cloud Foundry
2013 – Engineer on BOSH
OSCON – 3rd time attending, 1st time speaking

3. What is BOSH? A comprehensive service deployment tool.
Developed originally for Cloud Foundry.
Deploys distributed software onto various IaaS providers.

4. What BOSH is not It is not a PaaS.
It is not Pacemaker, Clusterware, or other HA orchestration.
It is not clever.

5. Why BOSH?
Addresses the end-to-end problem of provisioning to running services.
Designed for updates, provisioning is just a side-effect.
Fast, predictable deploys that don't suffer from “Configuration Drift”.

6. Top Down Deployment Strategy
What do I want to deploy?
What services make it up?
How do those services run?
What software do they need?

7. Top Down Deployment Strategy
What do I want to deploy?
A search indexer
What services make it up?
Elastic Search
How do those services run?
A Single Elastic Search process.
What software do they need?
Java, Elastic Search

8. Job
Is a process or set of processes that can be configured and monitored.
What's the simplest thing I can monitor?

9. How about 'init'? $ ps -ef UID PID PPID C STIME TTY TIME CMD
root :10 ? :00:01 /sbin/init
root :10 ? :00:00 [kthreadd]
root :10 ? :00:01 [ksoftirqd/0]
root :10 ? :00:00 [kworker/0:0H]
root :10 ? :00:00 [kworker/u:0H]
root :10 ? :00:00 [migration/0]

10. Demo: Initial Release and Job

11. Deploy to a BOSH What BOSH? Deploy a BOSH
BOSH-Lite (VERY ALPHA)
Come talk to us

12. Stemcell A base OS image for deploying services on.
Currently an Ubuntu based image with an embedded BOSH Agent.
Knows how to discover location and can phone home.

13. Deployment Manifest A description of a BOSH deployed release.
Describes What...
Release
Resources (Networks, Disks and VMs)
Services
Update behavior
Settings for the Release

14. Demo: Initial Deploy

15. What did that do? Spun up a VM and monitored init.
This is where you think, 'Jolly good... who cares?'

16. Package Source Based Generates static files only, no templates
No pre/post apply scripts
Built on ephemeral VMs
Packaging script places files in $BOSH_INSTALL_TARGET

17. Demo: Adding Packages and Exploring an Instance

18. Demo: Updating a Service and Debugging

19. Properties
Variables that can be set at deployment time and used to configure jobs.
Can be scoped to single jobs or span multiple. Often to describe relationships (host / port to connect / listen to).

20. Demo: Introducing Properties

21. Scaling
Define the desired instances per job and BOSH will oblige.

22. Demo: Adding Instances

23. Rolling updates Canary based deployments.
Tunable timeouts on expected update times.
Supports OS base image updates.
Supports rollback as separate deploy*
*if release version is backwards compatible (may require roll forward)

24. Demo: Rolling update

25. Infrastructures Supported
vSphere
vCloud
OpenStack
AWS
Experimental
CloudStack
Warden (LXC)

26. Demo: Taking it to a new Infrastructure

27. Questions?

28. Thank You Jeffrey Peckham peckham@pivotallabs.com
twitter: abic – github: abic