AIX Hardware Migration w/ HACMP...Advice Needed Post: 302971626

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Operating Systems AIX AIX Hardware Migration w/ HACMP...Advice Needed Post 302971626 by uzair_rock on Friday 22nd of April 2016 03:58:13 PM

04-22-2016

Registered User

AIX Hardware Migration w/ HACMP...Advice Needed

Hello Everyone,

Hope you all are doing great!

As you can see by the title on top, we are in the process of migrating alot of our servers from Power5 (physical) to Power8 (Virtual). Now it's turn for servers with HACMP Cluster on it. Let me lay out the environment like:

OLD ENVIRONMENT:

The Primary and secondary nodes resides on a Power5 host. Both are physical servers. The rootvg is on internal disks and the data vg's are on SAN Attached storage. Both primary and secondary nodes are on AIX 7.1 TL3 SP4. For HACMP we have a Active-Passive configuration.

NEW ENVIRONMENT:

Everything is virtualized. We have a Dual VIO setup on the Power8s. The boot disk are coming through a Storage cluster on VIO (vSCSI) and Data disks from SAN (NPIV).
As part of the new environment we are also moving on to the new network i.e. different IP subnet. (old=172.XXX) (new=10.XXX)

The way we have been migrating our previous (non-HA/test/dev) servers is that we clone the mksysb on to the vscsi disk on the new lpar before the day of the cutover and configure the new network on the server. On the day of cutover we bring down apps/DB on the old server (p5) then umount FS, varyoff and export VGs and remove the SAN disks. The storage team unmaps the LUNs and maps them back on the NEW WWPNs on the Power8 (NPIV).

On the new server we configure and import the disks and VGs and mount all FS inclulding NFS. Make DNS changes with the new IP and bring down all apps and DBs.

Now once we bring HACMP into the picture things become a little more complicated, can some of the experts here give me sound advice on how can we make the process as smooth as possible as we are moving on to the new server hardware as well as new network.

Thanks in Advance!

uzair_rock

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LEARN ABOUT OSX

ypset

YPSET(8)						    BSD System Manager's Manual 						  YPSET(8)

NAME

     ypset -- tell ypbind(8) which YP server process to use

SYNOPSIS

     ypset [-h host] [-d domain] server

DESCRIPTION

     Ypset tells the ypbind(8) process on the current machine which YP server process to communicate with.  If server is down or is not running a
     YP server process, it is not discovered until a YP client process attempts to access a YP map, at which time ypbind(8) tests the binding and
     takes appropriate action.

     Ypset is most useful for binding a YP client that is not on the same broadcast network as the closest YP server, but can also be used for
     debugging a local network's YP configuration, testing specific YP client programs, or binding to a specific server when there are many
     servers on the local network supplying YP maps.

     The options are as follows:

     -h host
	     Set the YP binding on host instead of the local machine.

     -d domain
	     Use the YP domain domain instead of the default domain as returned by domainname(1).

SEE ALSO

     domainname(1), ypbind(8), ypcat(1), ypmatch(1), yppoll(8), ypwhich(1), yp(8)

AUTHOR

     Theo de Raadt

BSD
								 October 25, 1994							       BSD

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