> On Mon, Jun 11, 2007 at 01:21:26PM -0500, brad@xxxxxxxxxxxxxx wrote: >> Hi all, >> >> I have just begun playing around with redhat cluster and I have a >> question >> that I am not finding a straight answer to. I would like to have one >> server be a backup to 3 primary servers. In other words I guess I >> would >> have 3 services (db1, db2, and db3) and then a 4th server (db4) that is >> available to take over for any of the 3 primary servers. Obviously if >> 2 >> primary servers fail I am in trouble, but the odds of that are extremely >> slim. Is this possible? Are there caveats? >> > > Yeah you can do this with priority failover domains. I assume from your > description that you will want 3 failover domains, one for each > application. > You will add two servers for each domain, the primary server which will > have the > higher priority and then db4. Then if anything fails on the main servers > they > will failover to db4, and then when they come back up the service will > failback. > You will want the "restricted" and "ordered" flag set. The only caveat > you have > already specified, if db4 is down and something fails everything hangs > since you > will have lost 2 nodes. You may want to look into qdisk if you want to > change > this behavior slightly. > > Josef > Thanks Josef. I will look into qdisk. Brad Crotchett brad@xxxxxxxxxxxxxx http://www.bradandkim.net -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
