[Linux-HA] Preventing STONITH deathmatch

[Andreas Kurz]

On 9/4/07, Daniel X Moore <dxm at sgi.com> wrote:
> Is there any way to rate-limit STONITH attempts? We occasionally cause a
> problem in one of our plugins that causes the status & stop actions to
> always fail. This causes both nodes to continually kill the other node
> (and themselves, I suspect).

Depending on the application and the availability you expect you could
add "on_fail=block" to the stop operation of your resource instead of
the default "fence" (in case you are using stonith) so heartbeat waits
for manual interaction.

Regards,
Andreas

>
> This "deathmatch" behaviour makes it pretty difficult to get in and
> reconfigure/fix things since the nodes are being killed almost
> immediately they come back up.
>
> Is there any way to force a delay (with associated lack of availability)
> between STONITH attempts?
>
> Constantly rebooting machines are actually less available than machines
> not running a specific service :)
>
> --
> -------------------------------------------------------------------
>   Daniel Moore                              dxm at sgi.com
>   Engineering Manager: AppMan + HA          Phone:  +61-3-9963-1957
>   SGI Australian Software Group             Mobile: +61-4-1360-4720
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