[ClusterLabs] Antw: Re: Problem with stonith and starting services

[Ulrich Windl]

>>> Cesar Hernandez <c.hernandez at medlabmg.com> schrieb am 05.07.2017 um 08:50 in
Nachricht <AEF93306-C409-43C2-8222-CD457CC153C4 at medlabmg.com>:

>> Might be kind of a strange race as well ... but without knowing what the
>> script actually does ...
>> 
> 
> The script first try to reboot the node using ssh, something like ssh $NODE 
> reboot -f, then runs a remote reboot using AWS api

AFAIK that's not proper fencing. SunOS once had a "fasthalt" command. In Linux "halt -nf" might do a similar thing, or maybe trigger a reboot via sysrq (echo b > /proc/sysrq-trigger).

Fencing is everything but a clean shutdown. The specific problem is that shutdown may be performed asynchronously, so the command finishes, but the system is still in progress of shutting down (which may hang indefinitely).

Regards,
Ulrich

> 
> Thanks 
> 
> 
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