On Dec 1, 2007 2:01 AM, Amos Shapira <[EMAIL PROTECTED]> wrote:

> On 30/11/2007, Noam Meltzer <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > I had some experience with RHCS. Personally, it will be one of my last
> > choices for a good opensource HA software. (linux-ha first, actually)
>
> That's what I tried - but at least the packages on my test systems
> just crash and burn even running a simple "stonith -h" or
> "BasicSanityCheck".

Never felt the need for using stonith, so can't really know. Linux-HA just
worked for me great without it.

>
>
> > It is very lacking in the area of Ethernet heartbeats (allows only one!)
> and
>
> What do you mean by "allows only one"?

Exactly what it sounds like.

>
>
> > Anyhow, RHCS does have one good point which will make it the first OSS
> > candidate on certain scenarios which is GFS.
>
> Well - can't you configure GFS without it?

No. GFS requires RHCS, it's one bundle.

>
>
> Also - I got the impression the OCFS is more recommanended by users on
> the net, but it doesn't come as a CentOS package - is it worth the
> trouble to install?

You need OCFS2. You can download RPMs from Oracle's website.
Though, I *think* that you will require oracle's cssd to use it.

>
>
> > There is much more into it, but in order to give more information I
> would
> > need more information about your application and its architecture.
>
> The main application just updates a SQLite file a lot. All we want is
> to have a stand-by node to take over and keep providing network
> service (reading and updating the file) if/when the primary node goes
> down. For this we share the file on DRBD but of course we need
> something to tell the secondary node to take control of the service.

Uhm. Don't have actual experience with DRBD. Though, I find this technology
a bit scary. Personally I would prefer a real storage device (SAN  or NAS)
for this kind of work (and make sure that the storage is highly available).
Then I can go to sleep at night ;-)
At this point I would prefer Linux-HA (or if you really have the money:
Veritas Cluster)



Best regards,
Noam

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