Ceph and cloud stack apr 2014

•

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Ian Colle

Ceph and CloudStack - from CloudStack Collaboration Summit

Technology

Ian Colle
Director of Engineering, Inktank
ian@inktank.com
@ircolle
www.linkedin.com/in/ircolle
ircolle on oftc/freenode
inktank.com | ceph.com

CEPH UNIFIED STORAGE
FILE
SYSTEM
BLOCK
STORAGE
OBJECT
STORAGE
CloudStack
Geo-Replication
Native API
5
Multi-tenant
S3 & Swift
CloudStack
Linux Kernel
iSCSI
Clones
Snapshots
CIFS/NFS
HDFS
Distributed Metadata
Linux Kernel
POSIX
Copyright © 2014 by Inktank

CEPH OVERVIEW
PHILOSOPHY TODAY
6
2004
2010
2012
HISTORY
2006
Included in
Linux kernel
Integrated into
CloudStack
Open sourced for
the first time
Project starts
at UCSC
Failure is normal
Self managing
Scale out on
commodity
hardware
Everything runs
in software
Copyright © 2014 by Inktank

TRADITIONAL STORAGE VS. CEPH
TRADITIONAL
ENTERPRISE STORAGE
7
Copyright © 2014 by Inktank

STRONG & GROWING COMMUNITY
8
8,172
37,946
2,888
11,500
1,418
2,715
2011-Q3 2011-Q4 2012-Q1 2012-Q2 2012-Q3 2012-Q4 2013-Q1 2013-Q2 2013-Q3
IRC chatlines
ML messages
Commits
Copyright © 2014 by Inktank

ARCHITECTURE
9
S3/SWIFT
HOST/
HYPERVISOR
iSCSI CIFS/NFS SDK
INTERFACESSTORAGECLUSTERS
MONITORS OBJECT STORAGE DAEMONS (OSD)
BLOCK
STORAGE
FILE SYSTEM
OBJECT
STORAGE
Copyright © 2014 by Inktank

CRUSH
10
hash(object name) % num pg
CRUSH(pg, cluster state, rule set)

§  CRUSH
§  Pseudo-random placement algorithm
§  Fast calculation, no lookup
§  Repeatable, deterministic
§  Statistically uniform distribution
§  Stable mapping
§  Limited data migration on change
§  Rule-based configuration
§  Infrastructure topology aware
§  Adjustable replication
§  Weighting
12

HOW DO YOU
SPIN UP
HUNDREDS OF VMs
INSTANTLY
AND
EFFICIENTLY?
21

§  Wido den Hollander wido@42on.com
§  If you don’t know him, you should
§  Developed
§  rados-java
§  libvirt support for RBD
§  CloudStack integration
THIS IS THE HOUSE THAT WIDO BUILT

ARCHITECTURAL COMPONENTS
27
APP HOST/VM CLIENT
Copyright © 2014 by Inktank

CEPH WITH CLOUDSTACK
28
Copyright © 2014 by Inktank

§  Ceph (Firefly in rc)
§  http://www.ceph.com/download/
§  libvirt (1.2.3 released on 01APR2014)
§  http://libvirt.org/sources/
§  QEMU (2.0 in rc, or 1.7.1)
§  http://wiki.qemu.org/Download
§  Cloudstack (4.2 or newer)
§  http://cloudstack.apache.org/downloads.html
WHAT DO I NEED?

§  Set up a ceph cluster
§  http://ceph.com/docs/master/start/
§  Install/configure QEMU
§  http://ceph.com/docs/master/rbd/qemu-rbd/
§  Install/configure libvirt
§  http://ceph.com/docs/master/rbd/libvirt/
§  Create your Cloudstack pool
§  ceph osd pool create cloudstack
§  Add Primary Storage
§  For Protocol select RBD
WHAT DO I DO?

CEPH ROADMAP
32
Firefly Giant H-Release
Copyright © 2014 by Inktank

CACHE TIERING - WRITEBACK
Copyright © 2014 by Inktank
5 PB HDD OBJECT STORAGE
500TB
writeback cache

CACHE TIERING - READONLY
Copyright © 2014 by Inktank
5 PB HDD OBJECT STORAGE
200TB
redonly cache
150TB
readonly cache
150TB
readonly cache

NEXT STEPS
WHAT NOW?
•  Read about the latest version of
Ceph: http://ceph.com/docs
•  Deploy a test cluster using ceph-
deploy: http://ceph.com/qsg
§  Most discussion happens on the mailing
lists ceph-devel and ceph-users. Join or
view archives at http://ceph.com/list
§  IRC is a great place to get help (or help
others!) #ceph and #ceph-devel. Details
and logs at http://ceph.com/irc
38
•  Deploy a test cluster on the AWS free-tier
using Juju: http://ceph.com/juju
•  Ansible playbooks for Ceph:
https://github.com/ceph/ceph-ansible
§  Download the code:
http://www.github.com/ceph
§  The tracker manages bugs and feature
requests. Register and start looking
around at http://tracker.ceph.com
§  Doc updates and suggestions are always
welcome. Learn how to contribute docs at
http://ceph.com/docwriting

Ian R. Colle
Director of Engineering
ian@inktank.com
@ircolle
www.linkedin.com/in/ircolle
ircolle on oftc/freenode

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Ceph and cloud stack apr 2014

1. 20140411

2. Ian Colle Director of Engineering, Inktank ian@inktank.com @ircolle www.linkedin.com/in/ircolle ircolle on oftc/freenode inktank.com | ceph.com

3. AGENDA 3

4. CEPH

5. CEPH UNIFIED STORAGE FILE SYSTEM BLOCK STORAGE OBJECT STORAGE CloudStack Geo-Replication Native API 5 Multi-tenant S3 & Swift CloudStack Linux Kernel iSCSI Clones Snapshots CIFS/NFS HDFS Distributed Metadata Linux Kernel POSIX Copyright © 2014 by Inktank

6. CEPH OVERVIEW PHILOSOPHY TODAY 6 2004 2010 2012 HISTORY 2006 Included in Linux kernel Integrated into CloudStack Open sourced for the first time Project starts at UCSC Failure is normal Self managing Scale out on commodity hardware Everything runs in software Copyright © 2014 by Inktank

8. STRONG & GROWING COMMUNITY 8 8,172 37,946 2,888 11,500 1,418 2,715 2011-Q3 2011-Q4 2012-Q1 2012-Q2 2012-Q3 2012-Q4 2013-Q1 2013-Q2 2013-Q3 IRC chatlines ML messages Commits Copyright © 2014 by Inktank

10. CRUSH 10 hash(object name) % num pg CRUSH(pg, cluster state, rule set)

11. 11

12. §  CRUSH §  Pseudo-random placement algorithm §  Fast calculation, no lookup §  Repeatable, deterministic §  Statistically uniform distribution §  Stable mapping §  Limited data migration on change §  Rule-based configuration §  Infrastructure topology aware §  Adjustable replication §  Weighting 12

13. 13 ??

14. 14

15. 15

16. 16 ??

17. 17

18. 18

19. 19

20. 20

21. HOW DO YOU SPIN UP HUNDREDS OF VMs INSTANTLY AND EFFICIENTLY? 21

22. 22 instant copy = 144

23. 23 write write write = 148 write

24. 24 read read read = 148

25. CEPH AND CLOUDSTACK

26. §  Wido den Hollander wido@42on.com §  If you don’t know him, you should §  Developed §  rados-java §  libvirt support for RBD §  CloudStack integration THIS IS THE HOUSE THAT WIDO BUILT

29. §  Ceph (Firefly in rc) §  http://www.ceph.com/download/ §  libvirt (1.2.3 released on 01APR2014) §  http://libvirt.org/sources/ §  QEMU (2.0 in rc, or 1.7.1) §  http://wiki.qemu.org/Download §  Cloudstack (4.2 or newer) §  http://cloudstack.apache.org/downloads.html WHAT DO I NEED?

30. §  Set up a ceph cluster §  http://ceph.com/docs/master/start/ §  Install/configure QEMU §  http://ceph.com/docs/master/rbd/qemu-rbd/ §  Install/configure libvirt §  http://ceph.com/docs/master/rbd/libvirt/ §  Create your Cloudstack pool §  ceph osd pool create cloudstack §  Add Primary Storage §  For Protocol select RBD WHAT DO I DO?

31. WHAT’S NEXT FOR CEPH?

35. 35 Costs you 30MB of storage

36. 36 Costs you ~14MB of storage

37. NEXT STEPS

38. NEXT STEPS WHAT NOW? •  Read about the latest version of Ceph: http://ceph.com/docs •  Deploy a test cluster using ceph- deploy: http://ceph.com/qsg §  Most discussion happens on the mailing lists ceph-devel and ceph-users. Join or view archives at http://ceph.com/list §  IRC is a great place to get help (or help others!) #ceph and #ceph-devel. Details and logs at http://ceph.com/irc 38 •  Deploy a test cluster on the AWS free-tier using Juju: http://ceph.com/juju •  Ansible playbooks for Ceph: https://github.com/ceph/ceph-ansible §  Download the code: http://www.github.com/ceph §  The tracker manages bugs and feature requests. Register and start looking around at http://tracker.ceph.com §  Doc updates and suggestions are always welcome. Learn how to contribute docs at http://ceph.com/docwriting

39. Ian R. Colle Director of Engineering ian@inktank.com @ircolle www.linkedin.com/in/ircolle ircolle on oftc/freenode

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