topic Re: clustering .... in Operating System - Linux

clustering ....

f. halili — Thu, 04 Nov 2004 13:30:51 GMT

Any suggestions on software to use to cluster 2 more Linux RedHat machines?? Is there an open source I can use? If I go to a licensed one is there a trial version available for evaluation.

Re: clustering ....

Vitaly Karasik_1 — Thu, 04 Nov 2004 15:39:47 GMT

I suggest RH CLuster Manager; you may ask RH
for trial, I think.

Of course, there are free sw too:

http://www.linux-mag.com/2003-11/clusters_01.html Linux Virtual Server Clusters

http://www.linux-mag.com/2003-11/availability_01.html Highly-Affordable High Availability

http://www.linux-mag.com/2003-11/drbd_01.html Data Redundancy By DRBD

Linuxgazette: http://www.linuxgazette.com/node/view/8468

http://lists.linux-ha.org/mailman/listinfo/linux-ha Linux-HA -- General Linux-HA mailing list

Re: clustering ....

Steven E. Protter — Thu, 04 Nov 2004 17:14:48 GMT

ha-linux.org may currently have a 2 node limit. I'm testng it out right now.

It is extremely simple to configure and has very low hardware requirements.

SEP

Re: clustering ....

Serviceguard for Linux — Fri, 05 Nov 2004 00:17:44 GMT

Red Hat Cluster Manager is licensed only for the AS version of Red Hat and is by subscription (pay each year).

ha-org used to suggest a STONITH mechanism that required extra HW - don't know if that is still the case. (Probably one of the reasones for the two node limit.)

Serviceguard for Linux (from HP) trial versions are available from your sales person and can be used with either AS or ES.

Re: clustering ....

Vitaly Karasik_1 — Fri, 05 Nov 2004 00:28:52 GMT

RH Cluster Suite works for RHEL ES and AS.

As for HP ServiceGuard - it's limited to HP hw only.

In fact, there are many types of applications, in many cases we don't need "HA cluster a-la Serviceguard" at all for providing HA.

Re: clustering ....

dirk dierickx — Fri, 05 Nov 2004 02:13:34 GMT

There are several possibilities;

- RH cluster software
- HP MC/Serviceguard
- Veritas Cluster Server
- Linux HA project
- Linux Virtual Server (loadbalancing)

what is the advantage of Serviceguard and Veritas? they have the same interface (and run) on other OS's, so if you run a multi OS shop you might like to unify your tools, in that case they might be a good choice.

Re: clustering ....

Michael Williams_6 — Fri, 05 Nov 2004 04:03:55 GMT

Personally I work for a really cheap company, so we use Heartbeat for clustering and DRBD for the shared storage, all can be used with innexpensive hardware and works a treat!

Best of all, it's bloody free!

M

Re: clustering ....

Rick Beldin — Fri, 05 Nov 2004 09:04:15 GMT

A note - while you can buy support from HP for RH Enterprise Linux, the RH Cluster product is NOT supported by HP. If you chose to go that route, you will need to go directly to RH for support.

Re: clustering ....

Ross Minkov — Fri, 05 Nov 2004 15:05:44 GMT

Just s clarification on the discussion about Red Hat Cluster Manager. It provides fail over type of clustering.
It was supported only on AS for RHEL3. Then when RHEL3 came up Red Hat Cluster Manager was available on both RHEL 3 AS and RHEL 3 ES. Also it came included with RHEL AS 2.1, and now you have to buy it as a separate product for RHEL 3.

Regards,
Ross

Re: clustering ....

Vitaly Karasik_1 — Sun, 07 Nov 2004 01:35:04 GMT

>Just s clarification on the discussion >about Red Hat Cluster Manager. It provides >fail over type of clustering.
Right for RH Cluster Manager, but RH Cluster Suite provides Cluster Manager and IP loadbalancing clusters
http://www.redhat.com/software/rha/cluster/

I suggest http://www.redhat.com/software/rha/cluster/ and RH whitepapers/manuals for more.