Active/Active Cluster Installation & Configuration

[suresh_singh27yahoo.com]

Hi,

I done the Active/Passive Cluster MCSG Cluster in 2-node environment.

Please provide the detailed procedure to configure Active/Active MCSG Cluster.

Thanks

[Vinod Kumar Yadav · Accepted solution]

Hi Suresh,


For Active/Active HP-UX MCSG Cluster Node Configuration that is fully depends on the customer requriment.

As you know the Active/Active Cluster is used for Applicatio Environment.

And in the Oracle Databse Environment you can use with Oracle RAC(Real Application Cluster.

Active/Active Cluster used maxium in the Core Banking Environment.

At the time Active/Active Cluster Installation those VG u requried to be Active in second cluster node.

Use the following commands to setup VG on another cluster node.

# vgexport -s -p -m /tmp/vgtu1.map /dev/vgtu1

Copy the map file to second cluster node.

# rcp /tmp/vgtu1.map tcidb02:/tmp/vgtu1.map

Import the VG using the map on second cluster node.

# vgimport -s -m /tmp/vgtu1.map /dev/vgtu1

Then after done every thing the VG active in the shared mode for which active/active cluster.

Activate the shared VG in the shared mode then the both node can read write.

Use to active the VG in the pkg cntl file in place of vgchange -a e vgname to vgchange -a s vgname

# vgchange -a e vgname

# vgchange -a s vgname

Thanks
Vinod Kumar Yadav

[Prashanth Waugh]

Hi,
Active/active configuration: In an active/active cluster configuration, both servers perform meaningful work all the time.
suppose u have 2 DC one at mumbai and another at delhi. some packages are runnning at mumbai dc which are the part of cluster1 and some packages are running at delhi dc which are the part of cluster2. meaning is that boths sides are active. both storage should be synchronised at any time .CA software is availble DC to DC storage synchronization.there will be bit bit synchronization at storage level. the export/import fundamentals will be same for cluster. u have to export/import the vg as per failbackup/failover policey on nodes.


Reagrds,
prashant

[Duncan Edmonstone]

Same question came up a few weeks ago:

http://forums11.itrc.hp.com/service/forums/questionanswer.do?threadId=1358005

HTH

Duncan

[Steven E. Protter]

Shalom,

The most important component for active/active is to activate the shared volume group in exclusive mode

vgchange -s -a y

Also important is getting software that works in that mode.

Oracle Server if used this way will destroy the data. Oracle RAC is designed for this environment but now ships with its own cluster suite.

SEP

[suresh_singh27yahoo.com]

Thanks