[one-users] fencing a failed host?

Giovanni Toraldo gt at libersoft.it
Sat Jan 21 08:17:47 PST 2012


Hi,

the host hook documentation page says:

> Additionally, there is a corner case that in critical production
> environments should be taken into account. OpenNebula also has become
> tolerant to network errors (up to a limit). This means that a spurious
> network error won't trigger the hook. But if this network error stretches
> in time, the hook may be triggered and the VMs resubmitted. When (and if)
> the network comes back, there will be a potential clash between the old and
> the reincarnated VMs. In order to prevent this, a script can be placed in
> the cron of every host, that will detect the network error and shutdown the
> host completely (or delete the VMs).
>

There is a suggested implementation for this kind of script? Someone is
already using it in production?

Thanks.

-- 
Giovanni Toraldo - LiberSoft
http://www.libersoft.it
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