topic Re: MC/SG Network problem in Operating System - HP-UX

MC/SG Network problem

Marco Di Ianni — Wed, 07 Nov 2007 06:38:26 GMT

Hì all,

I've a working cluster with 2 nodes (MC/SG 11.15 on HP-UX 11.23).
After a recofiguration (for changing of disk lock), I've run check command, but the output is this:
...
Error: Non-uniform connections detected:
NODE1 lan6 is assigned to bridged net 3
but it should be assigned to bridged net 2
to which saphp048 lan2 belongs.
Error: Non-uniform connections detected:
NODE2 lan6 is assigned to bridged net 3
but it should be assigned to bridged net 2
to which saphp048 lan2 belongs.
Error: Non-uniform connections detected:
NODE1 lan2 is assigned to bridged net 2
but it should be assigned to bridged net 3
to which saphp048 lan6 belongs.
Error: Non-uniform connections detected:
NODE2 lan2 is assigned to bridged net 2
but it should be assigned to bridged net 3
to which saphp048 lan6 belongs.
...
cmcheckconf : Unable to reconcile configuration file /etc/cmcluster/cluster.conf
with discovered configuration information.

LAN2 and LAN6 is two heartbeat, whereas the Stationary IP is assigned to LAN1.

Someone have some idea?
Thanks to all.

Re: MC/SG Network problem

Torsten. — Wed, 07 Nov 2007 06:41:01 GMT

This sounds to me like your re-configuration violates the configuration rules. The message is telling you what is wrong.

BTW, your version is quite old and should be updated.

Re: MC/SG Network problem

Marco Di Ianni — Wed, 07 Nov 2007 06:48:51 GMT

My re-configuration concern only lock disks. Nothing about net conf.

Re: MC/SG Network problem

Stephen Doud — Wed, 07 Nov 2007 10:18:05 GMT

cmcheckconf compares the current network configuration to that which previously existed and was recorded in the cluster binary file.
The error message reflects a change in the network configuration compared to that which was saved in the cluster binary file.

Use cmviewconf to inspect the cluster binary file - and particularly the "bridged net ID" for each NIC.
Then use 'linkloop' between NICs on the same bridged network to confirm that physical network is still intact.
Command syntax:
# linkloop -i
The ppa number is the same as the Card In# shown in lanscan.

The error appears to indicate that lan6 is no longer connected to bridged net 3, but on bridged net 2, shich is where lan2 is attached.

Suggest you halt and rebuild the cluster if the new bridging is acceptable or correct the bridging changes that were made previous to this error.

Re: MC/SG Network problem

Marco Di Ianni — Wed, 07 Nov 2007 10:44:46 GMT

Thanks Stephen!
I was supposed to be a binary-file problem!

I've tested NICs by linkloop, and all NICs are ok!

Only another question: Must I stop cluster for remove and re-create binary file (by check e apply)? Is it only solution?

Thanks a lot!

Re: MC/SG Network problem

Stephen Doud — Thu, 08 Nov 2007 08:58:06 GMT

yes - you must stop the cluster and do a cmapplyconf to update the cluster binary file with network changes.

Re: MC/SG Network problem

Marco Di Ianni — Thu, 08 Nov 2007 09:14:12 GMT

Thanks to all!