Redhat 5 Cluster suite
Frank DiPrete
fdiprete at comcast.net
Sat Jul 5 19:42:37 EDT 2008
I like linux-ha + mon. wonderful in it's simplicity and since it just
runs scripts on events you can make it do anything (like restart rinetd )
and there's watchdog for ftp and http to kick the box if they die.
much more info in the lvs howto also.
Kenny Lussier wrote:
>
>
> On Sat, Jul 5, 2008 at 2:23 PM, Bruce Labitt <bruce.labitt at verizon.net
> <mailto:bruce.labitt at verizon.net>> wrote:
>
>
> Kenny Lussier wrote:
>
> Hi All,
>
> Sorry if this is a re-post, but I sent it yesterday, and I
> haven't seen it come through yet....
>
> I have been tasked with some clustering work, and I have run
> into a few snags. Is anyone familiar with the RHEL 5 clustering
> suite? The situation that I have is that I have a system that
> needs to be set up as a failover cluster. There are two services
> running (http and ftp) that are essential services, so if either
> of them die, the system needs to fail over to the other system.
> The snag is that I have a third service (rinetd) that isn't
> important, and I just want to have it re-started if it dies. I
> can set it up so that rinetd is re-started, but then if the box
> fails over, rinetd isn't started on the other system. If I tie
> rinetd to the the IP address resource or to one of the essential
> resources, then the whole system fails over if rinetd dies (when
> the cluster manager detects a failure in rinetd, it re-starts
> the service, but fails over the box anyway).
> Has anyone dealt with anything similar to this?
>
> TIA,
> Kenny
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>
> Yes, it was a repost. Did you read this?
>
> http://www.redhat.com/docs/manuals/csgfs/browse/4.6/Cluster_Suite_Overview/s1-service-management-overview-CSO.html
>
> It sounds like you want high availability. There is a description
> of the fail over service in the above link. I am sorry I have no
> experience in this. I was recently looking into clusters for
> massively parallel computation.
>
> Regards,
> Bruce
>
>
> I have read all of the RH docs for the cluster suite and GFS.
> Unfortunately, they only cover vanilla failover. In my case, I have two
> services that need to fail over the whole box, and one that just needs
> to be re-started. We have RH support, but the cluster suite is only
> covered with the "Advanced Platform" support, and the decision was made
> that we would get the support for it if it does what we need (except
> that we can't get it to do what we need without the support....).
>
> Oddly, I never got either of the e-mails that I sent to gnhlug-discuss,
> but I got the replies to it.
>
> Thanks,
> Kenny
>
>
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