[Building Sakai] Sakai on VMware?

[Coetzee, Nico]

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________________________________

Hi Bryan

We at UNISA are also running SAKAI on VMWARE ESX SERVER except for the DATABASE (oracle).

Our setup is as follows

1. One Load Balancer Machine and Log File Server (all or nodes tomcat & Apache logs are logged to to this machine) (Load balancing software POUND http://www.apsis.ch/pound/)
OS: UBUNTU
        Mem : 4096MB
        CPU's : 2
        HDD: 40G
         (32bit)

2. One "File Server"
      OS: UBUNTU
      Mem: 4096MB
      CPU's: 2
      HDD: 100G
      (32bit)

3. 10x NODES
     OS: UBUNTU
     Mem : 8192MB
     CPU's: 2
     HDD: 10G
     (64bit)


All of our nodes are running 2 tomcat's and are front ended with apache.  We currently do not have any performance problems.  For the last six months (since upgrading to sakai2.6), we only changed the nodes to 64Bit machine's to allocate more memory to the JVM's.

Our student stats for last year (2010) was :

Number of students joining :           112 599
Number of Visits by students :  12 421 735
Number of Active Students:            230 134

For 2011 so far:

Number of students joining :          19 489
Number of Visits by students:   1 380 909
Number of Active Students:          112 225


Hope this will help you


On 02 Feb 2011, at 6:41 PM, Bryan Bakotich wrote:

Thanks for all the information!

I guess I should've been a little more clear. We already have our installation split up into a couple servers.

 1.  Apache in front of a 6GB Tomcat on a Physical machine
 2.  Our MySQL db is on a separate machine that was virtualized about 6 months ago
 3.  And LDAP has it's own physical machine

Virtualizing MySQL gave us some performance issues for the first month or so, but we've finally found the right mix of settings and it's not an issue anymore.

We only have the one application server though and that is what we are trying to virtualize. It sounds like enough people are doing this without too many problems so I think we'll go for it. I'm hoping once we're virtualized I can get extra VMs so we can have a couple smaller tomcats instead of one 6GB tomcat.

-Bryan

On Wed, Feb 2, 2011 at 7:30 AM, Martin B. Smith <smithmb at ufl.edu<mailto:smithmb at ufl.edu>> wrote:
On 02/01/2011 11:14 PM, Bryan Bakotich wrote:
Hi all,

I have been getting asked by our systems team to move our Sakai app
server to a VM. Has anybody else has done this and is the performance
good enough for production?

We are currently running only one app server on real hardware with a
heap size of 6GB. We are using VMware vSphere 4, and the OS of the VM
would be CentOS 5.

Any insight is much appreciated. The only info I found about this
relating to Sakai was in this thread:
http://collab.sakaiproject.org/pipermail/production/2009-March/000021.html

-Bryan

Hi Bryan,

We use VMware for everything except NFS and Database (Oracle). Our 10 application nodes (6gb heaps, RHEL x86_64) and 4 web frontends work great under vSphere 4 with the latest tools.

Have you looked at the production deployments JIRA tickets? You'll probably find a lot more detail there:
 http://jira.sakaiproject.org/browse/PROD

Cheers,
--
Martin B. Smith
smithmb at ufl.edu<mailto:smithmb at ufl.edu> - (352) 273-1374
CNS/Open Systems Group
University of Florida


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--
Bryan Bakotich
Open Source Implementation Specialist
Digital Media Center, Information & Technology Services
Pacific Lutheran University
Tacoma, WA 98447-0013
Phone: 253-536-5021
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