"OR" conditionals/dependencies?

[Jamie Baddeley]

Hi Justin,

You might be able to achieve what you want with check_cluster.


jamie

On Thu, 07 Aug 2003 18:55, you wrote:
> Hello everyone;
>
> I have an interesting situation here.  I have a large server cluster being
> operated by Veritas Cluster.  In a nutshell, we have 6 Oracle instances,
> spread out over three machines, all sharing the same EMC array via a
> fibre-channel connection.  Each instance has its own set of mountpoints. 
> If something goes wrong, VCS will take down Oracle, unmount the mount
> points, remount them on another machine, then bring up Oracle on the new
> machine (if you've never seen VCS in action, it's rather cool).
>
> The problem I encountered:  Nagios is monitoring the mountpoints on Machine
> A, which we just rebooted.  This means VCS unmounted and moved the
> mountpoints to Machine B.  This means when A comes back up, the mountpoints
> aren't going to be there (and that's not a bad thing).  SNMP just reports
> the mount points as "Unknown".  To make matters worse, Nagios isn't
> monitoring the mount points on B (which just appeared), so when one of
> those fills up, we don't know about it.
>
> What I'm looking for is something like this for a service
>
> define service {
>       host_name machine_A
>       name         mount_db01_oracle
>       service_or machine_B,machine_C
> }
>
> Basically, the service won't go into critical/warning/unknown unless two of
> them go into Unknown and one of them goes into Critical/Warning/Unknown. 
> If two of them are in Warning/Critical, that's a bad thing:  it means two
> database servers are writing to the same disks on the array (which results
> in a very very bad week for the DBA's).
>
> Right now, we just have it set to not alert on Unknowns... but we got
> bitten by this the other day when VCS malfunctioned and all three ended up
> being Unknown.... and took one of our 1.2 terabyte production databases
> down with it.. and we didn't know for an hour.  (oops)  :-)
>
> Any ideas or suggestions?
>
> Thanks;
> Justin
>
>
>
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