[Linux-cluster] High Availability options
stephenk at olcinc.com
Thu Jul 13 16:30:46 UTC 2006
I am new to this list and am seeking advice from those of you who have
experience with high availability on RHEL. I have been researching this
through Google and have observed several options, but don't know what
would be most appropriate for our deployment.
Here is our deployment:
- Users run the application through an ssh login session.
- The application runs on the server and the display is rendered
on the end user's desktop. (We are not using X here, but this
is conceptually the same as running remote X apps).
- The application is backed by a database (IBM Informix) on the
- Using Red Hat EL 3 (ES)
- IBM xSeries server (I noticed clustering support for some of
IBM's ServeRAID controllers in The High-Availability Linux
Project, in case anyone is using this feature)
- these servers have dual onboard NICs
- SCSI disks - no SAN will be used
- Minimal downtime (preferably zero downtime) in the event of a
My main concern with providing HA for our environment is to not
interrupt our SSH login sessions. While there are other network
services running, such as Apache, these services could tolerate a
short interruption in the event of a failover.
Does anyone have opinions on offerings such as the High-Availability
Linux Project, Red Hat Cluster Suite, Linux Virtual Server, just to
mention a few. I am not opposed to a commercial offering, as long
as it isn't prohibitively expensive. I don't want to spend more on
HA software than the investment in hardware.
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