Migrating HACMP to PowerHA 6.1 in aix?
Migrating HACMP version 5.4 or lower to PowerHA 6.1 using Snapshot
GROUND WORK:
#lslpp -l|grep -i cluster.es --> To check the current version of the cluster
#./clRGinfo -->
Check if the RG is online status.
#lssrc -ls clstrmgrES -->
check if the cluster manager is stable on both nodes
TAKE SNAPSOFT OF THE CLUSTER CONFIG
(Taking snapshot from one node is enough as it is similar on both the nodes)
#smitty hacmp ->
Extended
configuration
snapshot
configuration
add
a cluster snapshot
Create a snapshot of the cluster configuration (Mandatory -snap name and
description)
output: .info and .odm file created under
/usr/es/sbin/cluster/snapshots directory (Required this for restoration, so
keep it in a safe location like your home directory)
STOP THE CLUSTER SERVICES ON BOTH THE NODES.
#lssrc -ls
clstrmgrES --> check if the cluster manager is st_stable on both nodes
#smitty hacmp
system
management (c-spoc)
manage hacmp services
stop cluster services (now, select node/nodes and bring resource groups
offline)
#lssrc -ls
clstrmgrES --> Now the cluster manager demon should be ST_INIT
REMOVE THE HACMP 5.4 VERSION WHICH IS CURRENTLY INSTALLED
#smitty remove
Sofware name: (use F7
and select the all the cluster filesets)
Remove only: No; Detailed output: Yes
Enter to accept the warning and the
cluster filesets will be removed in few minutes.
You will Ok prompt.
#lslpp –l|grep –I cluster.es (Make sure the cluster filesets has been
removed)
Note: you have to remove the
cluster filesets on all the nodes.
INSTALL THE NEW POWERHA 6.1 VERSION
#cd <package_located directory>
#smitty install
Install software (enter . )
Software to install (use F7 to select the powerha filesets)
Preview only: No; Commit software
update: No; Detailed output: Yes, Accept license: Yes
Enter to accept the warning and the new powerHA
filesets will be installed in few minutes.
You will Ok prompt.
#lslpp –l|grep –I cluster.es (Make sure the cluster filesets has been
removed)
Note: you have to do the same powerHA filesets installation on all the
nodes
CONVERT THE SNAPSHOT WHICH WAS
TAKEN ON THE CLUSTER 5.4 VERSION
We need to covert the snapshot to be compaitble with powerHA 6.1
Rememer that we have taken the snapshot
of the cluster 5.4 under /usr/es/sbin/cluster/snapshots
directory ( .info and .odm file )
#/usr/es/sbin/cluster/conversion/clconvert_snapshot -v 5.4
–s snapshot_5.4
v - <version of the HA in which the
snapshot was taken>
-s
<name of the snapshot>
Note: The .odm file will be updated.
THE SNAPSHOT NEEDS TO BE APPLIED.
# smitty hacmp
Extended Configuration
Snapshot Configuration
Restore the Cluster Configuration from a
Snapshot
Select the snapshot which was converted
on the previous step (i.e snapshot_5.4)
Cluster snapshotname: snapshot_5.4;
un/configure cluster resource: Yes
Enter to accept the warning and the snapshot
to be restored in few minutes.
You will Ok prompt.
After the snapshot restore on the primary node, We can see that the
cluster configuration has been restored.
#cltopinfo
THE CLUSTER CONFIGURATION NEEDS TO BE SYNCED.
Remember that the sync has to be performed where you restore the
snapshot.
#smitty hacmp
Extended Configuration
Extended Verification and Synchronization
Verify/sync or both: Both; Automatically
correct errors: Interactively; Logging: Verbos.
Enter
Now we can able to see the cluster information on the secondary node
Use cltopinfo to get/confirm the details.
START THE CLUSTER
#smitty hacmp
System Management (C-SPOC)
HACMP Services
Start now: now; start services on nodes:
mention nodes name; manage RGs: Auto;
startup cluster demon: True
Press enter
#clRGinfo -> check RG is online
#lssrc -ls clstrmgrES
--> To check if the cluster manager is stable (ST_Stable)
