The basic training Cloud Foundry BOSH describes the features and architecture of BOSH and ends with a practical example in the form of a demonstration of a BOSH release. This contains the BOSH components such as Bosh Director, Bosh Health Monitor, Bosh Worker, Bosh Agent and the Bosh Stemcell. The concepts Bosh Release, Bosh Job and Bosh Deployment are separated from each other.

1. Bosh
Basics

2. • Inner vs. outer shell
• Bosh = Bosh outer shell

3. What is Bosh?

4. „BOSH is an open source tool chain for
release engineering, deployment, and
lifecycle management of large-scale
distributed services.“
http://docs.cloudfoundry.org/bosh/understanding-bosh.html

5. IaaS - OpenStack
VIRTUAL DATACENTER
VIRTUAL MACHINE
MicroBosh
Router
STORAGE
Storage Node Storage Node Storage Node
HDD HDD
HDD HDD
HDD HDD
HDD HDD
HDD HDD
HDD HDD
HDD HDD
HDD HDD
HDD HDD
Bosh API
Storage Volume
Operating
System
Bosh Agent
VIRTUAL MACHINE
Bosh CLI
$> bosh deploy
IaaS API

6. Bosh Deployment
Stemcell Release Manifest

7. A Bosh-Deployment
depends on 1 .. *
Stemcells

8. • VM template
• Bosh clones new VMs from stemcells
• Stemcell = OS + Bosh Agent
• Bosh Agent acts on the VM
• Stemcells are infrastructure and OS
specific (VMware + Ubuntu, OpenStack + CentOS, etc.)

9. A Bosh-Deployment
is described by a Release

10. • = collection of
• source code
• configuration files
• startup scripts
• software packages
• jobs

11. A Release contains 1 .. * Jobs

12. • Jobs = Processes to be run
• = set of configuration files
• + scripts
• > run process from a package,
e.g. mysqld

13. A Release contains 1 .. * Package

14. • Package
• src code
• compile script
• install script

15. A Bosh Deployment’s
settings are contained in a
Manifest

16. • defines the layout and properties of a
deployment
• infrastructure configuration
• network architecture
• VM dimensions, used stemcells (OS)

17. • bosh cli pushed manifest to Bosh
director
• > Bosh director creates a deployment

18. Bosh Deployment Workflow

19. • Upload stemcell
• Upload a release
• Set deployment with a manifest
• Execute deployment

20. Benefits from Bosh’s design

21. • Switch deployment between clouds
• Keep the same release
• Use a stemcell specific to the new
cloud
• Adapt the manifest

22. • Scaling-out a Bosh deployed system
• Keep the same release
• Use the same stemcell
• Change the manifest

23. • Update or roll-back Bosh deployed
system
• Use a newer or older release version
• Use the same stemcell
• Use the same manifest

24. Bosh Design
Principles

25. BOSH Deployments are
Predictable

26. • Src code is compiled in a freshly created
VMs
• VMs always contain exact the software,
specified in the release
• No left-overs of prior deployments as
new VMs are used.

27. BOSH Deployments are
Repeatable

28. Executing a specific Bosh deployment
always leads to exact same deployed
system.

29. BOSH Deployments are
Self-Healing

30. Bosh Health Monitor

31. • Bosh Health Monitor…
• monitors processes running on the
VMs managed by Bosh
• Compares desired vs. actual state
• Bosh can recreated processes and
VMS on failure.

32. PaaS Process Failure

33. Anynines Operations Manager (Bosh) Anynines IaaS (OpenStack)
CF Health Manager (Process)
Bosh Agent
VIRTUALMACHINE
Process Monitor
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process Monitor
Bosh Health Monitor
Bosh Director
NATS Message Bus
Infrastructure Level Self-Healing
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process Monitor
CF DEA (Process)
Process Monitor

34. PaaS VM Failure

35. Anynines Operations Manager (Bosh) Anynines IaaS (OpenStack)
CF Health Manager (Process)
Bosh Agent
VIRTUALMACHINE
Process Monitor
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process Monitor
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process Monitor
Bosh Health Monitor
Bosh Director
NATS Message Bus
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process Monitor
Infrastructure Level Self-Healing

36. Anynines Operations Manager (Bosh) Anynines IaaS (OpenStack)
CF Health Manager (Process)
Bosh Agent
VIRTUALMACHINE
Process Monitor
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process Monitor
Bosh Health Monitor
Bosh Director
NATS Message Bus
Infrastructure Level Self-Healing
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process Monitor
CF DEA (Process)
VIRTUALMACHINE
Bosh Agent Process MonitorBosh Agent

37. Thank you.
@fischerjulian
j@avtq.de

38. Links & Sources

39. • Open Source Bosh Documentation
http://docs.cloudfoundry.org/bosh/
• Understanding Bosh
http://docs.cloudfoundry.org/bosh/
understanding-bosh.html
• Bosh Source Code on github.com
https://github.com/cloudfoundry/bosh