[Linux-HA] Stonith with APC Smart UPS 1000 + Network Management Card

Dejan Muhamedagic dejanmm at fastmail.fm
Thu Jul 9 04:29:38 MDT 2009


Hi,

On Wed, Jul 08, 2009 at 08:54:45AM +0200, Ehlers, Kolja wrote:
> Hello everybody,
> 
> right now I am trying to set up stonith for out 3 node Cluster. We have 2 APC Smart UPS 1000 for this purpose. Both APC units are
> equipped with a extra network management card. All nodes are connected to the LAN via NIC1 and to a HB switch through NIC2.
> 
> This is my set up:
> 
> APC1 (connected to LAN)
> Node1 (has only one power supply)
> Node3 (has two power supplies)
> 
> APC2 (connected to LAN) 
> Node2 (has only one power supply)
> Node3 (has two power supplies)
> 
> Right now I am stuck and can not figure out how the apc plugins
> can send its shutdown commands to the APC throuh those network
> management cards. Does anyone know if that is possible? If that
> is not possible I must use the serial cable and not all nodes
> can comminicate to the APCs. This means I only can connect 2 of
> the three nodes and if I am thinking correctly this set up is
> not quite save in case of split brain. 

apcsmart supports only serial communication. apcmaster and
apcmastersnmp work over TCP/IP. Perhaps this UPS also supports
snmp, maybe that's worth a try. What exactly is that extra
management card? Does it support master protocol?

Thanks,

Dejan

> Thanks for your help
> 
> Kolja
> 
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