1. Ubuntu OpenStack & Ceph

2. Agenda
●
Canonical?
●
What is Ceph?
●
How does it work?
●
How is Ceph supported in OpenStack?
●
How can I try is out?
●
Q&A

5. IaaS
●
Openstack
→ Swift
→ Nova
→ Quantum
→ Horizon
→ Glance
Core areas for scale out with Ubuntu
SDN
●
Nicera
●
BigSwitch
●
NEC
●
MidoNet
PaaS
●
Cloud Foundry
●
Engine Yard
Storage
●
Block| Object
●
Ceph
All share Ubuntu as a common platform

6. IaaS
●
Openstack
→ Swift
→ Nova
→ Quantum
→ Horizon
→ Glance
Core areas for scale out with Ubuntu
Storage
●
Ceph

7. In OpenStack before it was OpenStack....

8. Ceph + Ubuntu OpenStack
Ceph is a fully supported option as part of Ubuntu OpenStack
Cinder
Glance
Support is backed by Inktank

9. What is Ceph?
●
Free to develop and use
●
Backed by Inktank
●
Solves most OpenStack storage
requirements
●
Provides block, object and file (!)
storage
●
Fully supported in Ubuntu

10. Ceph is based on a distributed,
autonomic, redundant native object
store called RADOS
Reliable
Autonomic
Distributed
Object
Store

11. What is Ceph?
●
Object Store (RADOS)
●
Block Storage (RDB)
●
Swift/S3 REST API (RGW)
●
Distributed File System (CephFS)
●
Librados (python/C/C++/Java/PHP)

12. What is Ceph?
Object Store
●
Self healing and replicated across
failure domains
●
No single point of failure
●
Runs on commodity hardware
●
No RAID or expensive disks needed

13. How does it work?
2 types of daemon
●
Monitor (MON)
– odd number in quorum
– Maintains cluster status
●
Object Storage daemon
– Typically uses XFS
– Typically 1:1 with disks
– Maintain data and replicas

14. How does it work?
CRUSH Algorithm
●
OSDs, Buckets and rules
●
Defines failure domains
●
Provides deterministic object
placement
Controlled
Replication
Under
Scaleble
Hashing

15. How does it work?
Pools
●
Logically partition cluster based on
storage type/performance
●
Provide client access to specific pool
using cephx

16. How does it work?

17. Ceph Support in OpenStack
●
Supported in OpenStack since Cactus
●
Supported in:
– Nova (Compute) – KVM + Xen
– Cinder (Storage)
– Glance (images)

18. Ceph support in OpenStack
●
RDB driver for volumes, snapshots,
clones
●
Bootable volumes using copy on write
clone of Glance images
●
Incremental differential backup of
cinder volumes

19. Ceph support in OpenStack

20. How can I try it out?
●
Simplest is to use Juju

21. Juju Charms
●
Juju utilizes service formulas
called Charms”
●
Charms are building blocks
●
Charms contain instructions :
Deploy, Install, and Configure
●
Charms can be instantiated
one or many times
Database
Ceph
Juju environment

22. ●
Juju maintains the relations
between the services
●
Eliminates complex
configuration management
Ceph
Ceph-Radosgw
Juju relation
Juju relation
Ceph-OSD

23. ●
Multiple charms can
provide the same service
and can be easily switched
Cloud app
HAProxy
Depends Provides
Depends Provides
Ceph

24. Juju maintains the
relations between
the services
Eliminates complex
configuration
management
Ceph
Ceph-Radosgw
Juju relation
Juju relation
Ceph-OSD

25. juju deploy -n 3 --config ceph.yaml ceph
Deploying Ceph Monitors
Deploying Ceph- OSDS
juju set ceph-osd "osd-devices=/dev/xvdf"
Set Ceph to use Volumes
juju add-relation ceph-osd ceph
Build the relationships between Ceph Monitor and OSDS
http://ceph.com/dev-notes/deploying-ceph-with-juju/

26. Questions please
Thank you
Mark Baker
Mark.baker@canonical.com