2 node MC/SG cluster with non revertive TOC but with automatic switch over on both nodes

[Enrico Venturi]

Hello colleagues,
I want to configure a cluster MC/SG composed by two nodes, A and B; the main node is A, the adoptive node is B; after a TOC the package run on B and the switch over is only manual, no automatic switch over in case of B fault is allowed.
I'd like to configure the cluster in such a way that the the TOC from A to B is automatic but not revertive; after an A fault the package runs on B; when A is newly running the package still runs on B but is a fault occurs on B then a TOC is automatically performed to A.
Is it possible?
What have I to configure?

thanks
regards
Enrico

[melvyn burnard]

Sounds like a normal type of configuration to me.
I suggest you read through the manual
Manging Serviceguard available at:
http://docs.hp.com/hpux/pdf/B3936-90073.pdf

[Steve Lewis]

Melvyn is THE ServiceGuard guru.

But Enrico, you are describing the default behaviour. Packages do not move back to their primary node when it comes up again, they always keep running on whichever their current node is, until either they are halted or the node fails.

[Sridhar Bhaskarla · Accepted solution]

Hi Enrico,

The default failback policy should work for you. Check the entry "FAILBACK_POLICY" in your package configuration file and make sure it is set to MANUAL. Also check the parameter PKG_SWITCHING_ENABLED. It should be YES. NODE_FAIL_FAST_ENABLED parameter controls if the node is to be TOC'ed or not. An YES is the answer for your situation.

All these are defaults unless you modified them before.

-Sri