Need for SRVCTL Modify during VIP Change?
I recently performed a test of a VIP Address change (*NO* host name change) in our Test RAC installation. We have the following in our three node RAC:
Test RAC Environment
-- Software
OEL 5 Update 2
Oracle Clusterware 11g (11.1.0.6)
Oracle ASM 11g (11.1.0.6)
Oracle Database 11g EE (11.1.0.6)
-- Hardware
3 servers
2 nic/server in active/backup configuration
We perfomed the following:
1) backup all software and database
2) backup OCR
3) Shutdown everything but CRS Stack
4) Change host file
5) Change VIP Address on DNS Servers
6) Restart Network
7) Restart CRS
8) Restart Servers
9) Check Current VIP Address
10) Modify VIP component (as root)
# srvctl modify nodeapps -n <hostname> -A <new vip>/<new subnet mask>/bond0
repeat for each node ...
11) Double Check VIP Address change
We noticed that at step 9 the VIP was already changed. I thought the VIP Address configuration was pulled from OCR but I hadn't made the change yet. Can anyone explan this?
Thank you.