Switching of a package

[UniRock]

Hello All,

Coming directly to the point..
Cluster (serviceguard 11.18) has 2 nodes (node1 and node2).

Package is running on node1.
Now, suppose for any reason, I want to switch/transfer/run the package to node2 but with following condition:
-Package should not be halted
-Node1 should be continue running

I know, if something happens to node1, the package will switch over to node2 without interruption (switching is enabled).

How can we achieve this manually?
I do not require this but just wanted to know.

Thanks

[R.O. · Accepted solution]

Hi,

Package must be restarted, to release resources from one node (application, ip, VGs) and be available for the other node. VGs have exclusive activation, so they cannot be activated by two nodes at the same time and must be deactivated in one node before they can be activated by the 2nd node.

Regards,

[Michal Kapalka (mikap)]

hi,

this is not possible, to make it without application downtime.

mikap

[melvyn burnard]

Now, suppose for any reason, I want to switch/transfer/run the package to node2 but with following condition:
-Package should not be halted
-

Well you cannot do that, the package must first be halted on node1, then started on node2.
Use either cmhaltpkg/cmrunpkg, or use the SGMGR Gui to do this.

[S.N.S]

Hi Rock,

Hi,

I doubt that the package can be switched to the other node without the package being halted on 1st node.

From my understanding, if we run manually
cmrunpkg -n node2 package >> would (try to)run the SAME package =>
TWO instances of ORACLE (for example) -- corrupting the Database itself.

That is my logic! :-)

HTH
SNS

[UniRock]

Thanks all..

That is what I wanted to clear.

@SNS
# cmrunpkg -n node2 package

I have already tried that, but got message something like "package already running on node1".

Have a great day !!

[S.N.S]

Hi (again),

The command wont work without halting the package :-) => not possible manually

(But, there is a way, of course cmruncl -n node2 >> and there you would get database CORRUPTION for a properly functional server & I wont try that out, normally!)

Danke,
SNS