Recently, I am going to try to using MON and Heartbeat to build a complete HA system. The following is my purpose:
1. There are two server: active server(node1) and backup server(node2)
2. Active server provides cluster-protected resources(imn my case,
HTTP && Oracle)for client to access via specific network identities
(e.g., an active IP address or a computer alias name). Of course,an
active server can also be the backup server of another active server.
The cluster software will monitor the availability of the active server
and two services. If any one of them should become unavailable, the
services running in active server will be interrupted. The cluster
software will trigger a pre-designated backup server to resume the
interrupted services originally provided by the active server.
3. Backup server will takeover the active server when the active server is
down or unavailable. Or when anyone of two services running on the
active server is considered unavailable, the cluster software will
notify the backup server to takeover this services. Backup servers can
be standby and active operation modes.
I really have no idea whether MON and Heartbeat can meet my requirement or not.
Also no idea how to switch one interrupted service to backup server. using ifconfig and route add/del ? Can someone point me in the right direction? If making this work, what part shall I modify? If someone has the similar experience, your advice is welcome!!! Thanks a lots!!!!
Best regard!
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