Embed Size (px)
DESCRIPTION
RBD, the RADOS Block Device in Ceph, gives you virtually unlimited scalability (without downtime), high performance, intelligent balancing and self-healing capabilities that traditional SANs can't provide. Ceph achieves this higher throughput through a unique system of placing objects across multiple nodes, and adaptive load balancing that replicates frequently accessed objects over more nodes. This talk will give a brief overview of the Ceph architecture, current integration with Apache CloudStack, and recent advancements with Xen and blktap2.
Citation preview
Ceph, Xen, and CloudStack:Semper Melior
Xen User Summit| New Orleans, LA | 18 SEP 2013
•Patrick McGarry•Community monkey•Inktank / Ceph•/. > ALU > P4•@scuttlemonkey•patrick@inktankcom
Accept no substitutes
C’est Moi2
•Ceph in <30s•Ceph, a little bit more•Ceph in the wild•Orchestration•Community status•What’s Next?•Questions
The plan, Stan
Welcome!3
On commodity hardware
Ceph can run on any infrastructure, metal or virtualized to provide a cheap and powerful storage cluster.
Object, block, and file
Low overhead doesn’t mean just hardware, it means people too!
Awesomesauce
Infrastructure-aware placement algorithm allows you to do really cool stuff.
Huge and beyond
Designed for exabyte, current implementations in the multi-petabyte. HPC, Big Data, Cloud, raw storage.
…besides wicked-awesome?
What is Ceph?
Software All-in-1 CRUSH Scale
4
Find out more!Ceph.com
…but you can find out more
Use it todayDreamhost.com/cloud/DreamObjects
Get SupportInktank.com
That WAS fast5
OBJECTS VIRTUAL DISKS FILES & DIRECTORIES
CEPHFILE SYSTEM
A distributed, scale-out filesystem with POSIX
semantics that provides storage for a legacy and
modern applications
CEPHGATEWAY
A powerful S3- and Swift-compatible gateway that brings the power of the Ceph Object Store to modern applications
CEPHBLOCK DEVICE
A distributed virtual block device that delivers high-
performance, cost-effective storage for virtual machines
and legacy applications
CEPH OBJECT STOREA reliable, easy to manage, next-generation distributed object
store that provides storage of unstructured data for applications
6
7
8
• CRUSH– Pseudo-random placement
algorithm– Ensures even distribution– Repeatable, deterministic– Rule-based configuration
• Replica count• Infrastructure topology• Weighting
9
10 10 01 01 10 10 01 11 01 10
10 10 01 01 10 10 01 11 01 10
hash(object name) % num pg
CRUSH(pg, cluster state, rule set)
10
10 10 01 01 10 10 01 11 01 10
10 10 01 01 10 10 01 11 01 10
11
CLIENT12
13
14
15
CLIENT
??
16
…with Marty Stouffer
Ceph in the Wild17
No incendiary devices please…
Linux Distros18
Object && BlockVia RBD and RGW (Swift API)
Our BFF
IdentityVia Keystone
More coming!Work continues with updates in Havana and Icehouse.
OpenStack19
BlockAlternate primary, and secondary
Community maintained
CommunityWido from 42on.com
More coming in 4.2!Snapshot & backup supportCloning (layering) supportNo NFS for system VMsSecondary/Backup storage (s3)
CloudStack20
A blatent ripoff!
Primary Storage Flow
•The mgmt server never talks to the Ceph cluster
•One mgmt server can manage 1000s of hypervisors
•Mgmt server can be clustered
•Multiple Ceph clusters/pools can be added to CloudStack cluster
21
A pretty package
A commercially packaged OpenStacksolution back by Ceph.
RADOS for Archipelago
Virtual server management software tool on top of Xen or KVM.
RBD backed
Complete virtualization management with KVM and containers.
BBC territory
Talk next week in Berlin
So many delicious flavors
Other Cloud
SUSE Cloud Ganeti Proxmox OpenNebula
22
Since 2.6.35
Kernel clients for RBD and CephFS. Active development as a Linux file system.
iSCSI ahoy!
One of the Linux iSCSItarget frameworks. Emulates: SBC (disk), SMC (jukebox), MMC (CD/DVD), SSC (tape), OSD.
Getting creative
Creative community member used Ceph to back their VMWareinfrastructure via fibre channel.
You can always use more friends
Project Intersection
Kernel STGT VMWareLove me!
Slightly out-of-date. Some work has been done, but could use some love.
Wireshark
23
CephFS
CephFS can serve as a drop-in replacement for HDFS.
Upstream
Ceph vfs module upstream samba.
CephFS or RBD
Reexporting CephFSor RBD for NFS/CIFS.
MOAR projects
Project Intersection
Hadoop Samba GaneshaRecently Open Source
Commercially supported product from Citrix. Recently Open Sourced. Still a bit of a tech preview.
XenServer
24
Support for libvirtXenServer can manipulate Ceph!
Don’t let the naming fool you, it’s easy
Blktap{2,3,asplode}Qemu; new boss, same as the old boss(but not really)
What’s in a name?Ceph :: XenServer :: LibvirtBlock device :: VDI :: storage volPool :: Storage Repo :: storage pool
Doing it with Xen*25
Thanks David Scott!
XenServer host arch
Xapi, XenAPI
xenopsd S M adapters
libvirtlibxl ceph ocfs2
libxenguest libxc qemu
xen
Client(CloudStack, OpenStack, XenDesktop)
26
Come for the blockStay for the object and file
No matter what you use!
Reduced OverheadEasier to manage one cluster
“Other Stuff”CephFS prototypesfast development profileceph-devellots of partner action
Gateway Drug27
Squash HotspotsMultiple hosts = parallel workload
But what does that mean?
Instant ClonesNo time to boot for many images
Live migrationShared storage allows you to move instances between compute nodes transparently.
Blocks are delicious28
Flexible APIsNative support for swift and s3
And less filling!
Secondary StorageComing with 4.2
Horizontal ScalingEasy with HAProxy or others
Objects can juggle29
Neat prototypesImage distribution to hypervisors
You can dress them up, but you can’t take them anywhere
Still earlyYou can fix that!
Outside usesGreat way to combine resources.
Files are tricksy30
Where the metal meets the…software
Deploying this stuff31
Procedural, Ruby
Written in Ruby, this is more of the dev-side of DevOps. Once you get past the learning curve it’s powerful though.
Model-driven
Aimed more at the sysadmin, this procedural tool has a very wide penetration (even on Windows!).
Agentless, whole stack
Using the built-in OpenSSH in your OS, this super easy tool goes further up the stack than most.
Fast, 0MQ
Using ZeroMQ this tool is designed for massive scale and fast, fast, fast. Unfortunately 0MQ has no built in encryption.
The new hotness
Orchestration
Chef Puppet Ansible Salt
32
Canonical Unleashed
Being language agnostic, this tool can completely encapsulate a service. Can also handle provisioning all the way down to hardware.
Dell has skin in the game
Complete operations platform that can dive all the way down to BIOS/RAID level.
Others are joining in
Custom provisioning and orchestration, just one example of how busy this corner of the market is.
Doing it w/o a tool
If you prefer not to use a tool, Ceph gives you an easy way to deploy your cluster by hand.
MOAR HOTNESS
Orchestration Cont’d
Juju Crowbar ComodIT Ceph-deploy
33
All your space are belong to us
Ceph Community34
35
Up and to the right!
Code Contributions36
Up and to the right!
Commits37
Up and to the right!
List Participation38
This Ceph thing sounds hot.
What’s Next?39
An ongoing process
While the first pass for disaster recovery is done, we want to get to built-in, world-wide replication.
Reception efficiency
Currently underway in the community!
Headed to dynamic
Can already do this in a static pool-based setup. Looking to get to a use-based migration.
Making it open-er
Been talking about it forever. The time is coming!
Hop on board!
The Ceph Train
Geo-Replication Erasure Coding Tiering Governance
40
Quarterly Online Summit
Online summit puts the core devs together with the Ceph community.
Not just for NYC
More planned, including Santa Clara and London. Keep an eye out: http://inktank.com/cephdays/
Geek-on-duty
During the week there are times when Ceph experts are available to help. Stop by oftc.net/ceph
Email makes the world go
Our mailing lists are very active, check out ceph.com for details on how to join in!
Open Source is Open!
Get Involved!
CDS Ceph Day IRC Lists
41
http://wiki.ceph.com/04Development/Project_Ideas
Lists, blueprints, sideboard, paper cuts, etc.
http://tracker.ceph.com/
All the things!
New #ceph-devel
Splitting off developer chatter to make it easier to filter discussions.
http://ceph.com/resources/mailing-list-irc/
Our mailing lists are very active, check out ceph.com for details on how to join in!
Patches welcome
Projects
Wiki Redmine IRC Lists
42
Comments? Anything for the good of the cause?
WEBSITECeph.com
SOCIAL@[email protected]/cephstorage
43
