PowerHA Configuration.

Steps to configure IBM PowerHA:

1. Define Nodes and confirm the AIX Level(oslevel -r).
2. Install 2 networks, 1 heartbeat network, and Define Resources(service ip, disk).
3. Install all the RSCT, HACMP filesets from CDs.
4. Install all the patches from IBM Fix Central site.
5. Reboot.
6. Make sure the both sides don't have save file system names, including log logical volumes.
7. Recreate log lv. (logform /dev/loglvname)
8. Make sure the VG major number is not the same in both nodes.
(ls –lrt /dev | grep vg)
9. VG and files sytems - Mount automatically at system restart should be set to NO. (chvg -an vgname, chfs -A no file_systems)
10. umount all the filesystems and varyoff all the VGs.
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11. Go to node 2 and run cfgmgr –v to import the shared volumes.
12. Import all the VGs on node 2. (smitty importvg) -- # import with the same major number as assigned on node 1.
13. Run chvg –an for all VGs on node 2.
14. Create the boot1, boot2, service ip and persistent ip in /etc/hosts files in both nodes.
15. Create file /usr/es/sbin/cluster/etc/rhosts(permission 600).
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16. Define cluster name. (hacmp extended configuration)
17. Define the cluster nodes.
18. Discover HACMP config.
19. Adding boot IP & Disk heart beat information.
20. Configure HACMP persistent nodes IP label/Addresses
21. Add a persistent ip label for both nodes.
22. Define the service IP labels for both nodes.
23. Add Resource Groups (start.sh, stop.sh)
24. Set attributes of the resource groups already defined.
25. Adding IP label ; RG owned by Node. Add the service IP label.
26. Synchronize the cluster: (Smitty cl_sync)
27. Start the cluster (smitty clstart)
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28. Perform all the tests such as resource take-over, node failure, n/w failure.
29. Check for cluster to stabilize.
a. #netstat –v | grep -i error
b. #ifconfig –a ; look-out for service/persistent ip.
c. File systems are mounted.

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