DRBD

Posted Nov 22, 2010 6:58 UTC (Mon) by jjs (guest, #10315)
In reply to: DRBD by Richard_J_Neill
Parent article: Comparing MySQL and Postgres 9.0 Replication (TheServerSide)

Way to solve split brain (and I believe Linux-HA has this, certainly RHAS does) is STONITH - Shoot the Other Node in the Head. Basically each system has a connection to the other's power strip. Before takeover it turns off (normally restarts) the power. So the other system is guaranteed dead on takeover, and comes back up as the slave.