[Linux-HA] Two-node clusters in split-sites

[Hell, Robert]

Hi,

 

we are planning to run multiple two-node clusters (with different
functions: database cluster, samba cluster, ...) in two different sites
with a fast, but unreliable network connections. All cluster nodes
replicate data with drbd.

I'm specially afraid of split-brain in this scenario because reliable
fencing is not possible in this split-site situation.

 

After investigating multiple cluster solutions I think Linux-HA is the
only project which provides a solution for our problem. We want to use
Linux-HA with one cluster node in each site and an external quorum
server (as described in the Heartbeat tutorial) without fencing.

Has anyone experiences with a solution like this and is this a solutions
which should work, is "supported" and is worth further investigations?
And last but not least: is it possible to run one quorum server for
multiple clusters (as mentioned before we have multiple two-node
clusters, but I only want to run one quorum server).

 

Many thanks and kind regards,

Robert