[ClusterLabs] Antw: [EXT] Suggestions for multiple NFS mounts as LSB script

[Tony Stocker]

On Mon, Jun 29, 2020 at 11:08 AM Ulrich Windl
<Ulrich.Windl at rz.uni-regensburg.de> wrote:
>
> You could construct a script that generates the commands needed, so it would
> be rather easy to handle.

True. The initial population wouldn't be that burdensome. I was
thinking of later when my coworkers have to add/remove mounts. I,
honestly, don't want to be involved in that any more than I must.
Currently they just make changes in their script and alles ist gut.
But more than anything I don't want them mucking about with Pacemaker
commands (which means I would have to do updates) since once they
break things, I'm the one who would have to fix it and explain how it
wasn't my fault.

>
>
> Have you considered using automount? It's like fstab, but won't mount
> automatically.

We looked at it a few years ago, but it didn't seem to react too well
to being used in a file server (https/ftps) role and so we abandoned
it.

>
>
> The most interesting part seems to be the question whow you define (and
> detect) a failure that will cause a node switch.

That is a VERY good question! How many mounts failed is the critical
number when you have 130+? If a single one fails, do you suddenly move
everything to the other node (even though it's just as likely to fail
there)? Do you just monitor and issue complaints? At the moment
there's zero checking of this, so until someone complains that they
can't reach something, we don't know that the mount isn't working
properly -- so apparently I guess it's not viewed as that critical.
But at the very least, the main home directory for the https/ftps file
server operations should be operational, or else it's all moot.

Is ocf_tester still available? I installed via 'yum' from the High
Availability repository and don't see it. I also did a 'yum
whatprovides *bin/ocf-tester' and no package came back. Do I have to
manual download it from somewhere? If so, could someone provide a link
to the most up-to-date source?

Thanks!