Hi list,
I've got 2 questions concerning the prevention of splitbrain and
monitoring MySQL Server 5.
I'm testing a MySQL Server 5 with 3 instances on a CentOS 5.1 with
Heartbeat and DRBD on a 2 Node Cluster (active / passive)
At the moment my 2 Nodes are running on a VMware Server.
I use the following Versions:
heartbeat v. 2.0.8-1
DRBD v. 8.0.6
For heartbeat style I'm using Release 1.
I've configured on each 2 NICs, 1 for DRBD sync and heartbeat and
another one for heartbeat.
haresoures:
mysql1 drbddisk::r0 Filesystem::/dev/drbd0::/pool/mysql/::ext3
172.16.100.110 mysqld_multi
My Questions:
1. If I unplug both NICs of the active Node, I get a Splitbrain after I
reconnect them again.
Is there any solution to prevent this using heartbeat R1 or which
possibilities would I have with R2?
2. How can I tell heartbeat to make an automatic failover to my passive
node if any of my MySQL Process has a hangup or terminates?
Can you monitor these processes and in cause of failure provoke an
automatic failover? If yes, which tools would I have to use?
I digged around the linux-ha site and other mailing-list articles but so
far unsuccessful.
Has anyone had this combination yet?
I'd be very thankful for any ideas / suggestions.
Lino
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