ServiceGuard and changing network cards

[Angela Cotter_2]

Hi,

We have a two node ServiceGuard cluster (ServiceGuard 11.15) running on D370s (OS 11.11). Currently there are one token ring and two ethernet network cards in each server. The Heartbeat IPs are on the ethernet cards and the Stationary IP is on the token ring card. The token ring cards need to be replaced with ethernet cards as the token ring network is being decommissioned. It will be possible for the cluster to be completely shut down during this change.

I've checked the ServiceGuard documents here:
http://docs.hp.com/hpux/onlinedocs/B3936-90065/B3936-90065.html
but in the "Replacement of LAN Cards" section it says that the new card must be exactly the same card type as the card removed.

Will it be possible to replace my token ring cards with ethernet cards? What cluster configuration changes will be required to get the cluster up and running as before with the new ethernet cards?

Many thanks for your help with this. I won't be able to respond/allocate points until Tuesday as we have a Bank Holiday this Monday but I will do so then.

Angela

[Sanjay_6]

Hi Angela,

Once you have installed the ethernet card, you'll have to a cmquerycl and then modify the ascii conf file and do a cmcheckconf and cmapplyconf to check and apply the configuration file.

Only the network replated paramters need to be changed in the ascii conf file.

don't think you'll have to change anything on the package configuration side, but have a look at the current package configuration and see if the old network is referenced anywhere in that.

Hope this helps.

Regds

[Sridhar Bhaskarla]

Angela,

All you need to do is to delete the serviceguard configuration, replace the cards, change the configuration files to note the changes and then apply the configuration.

-Sri

[Ashwani Kashyap · Accepted solution]

Its possible . I have done it earlier . I had to move the IP from HPPB card to HSC cards on a K class .

When you change the cards , the LAN device number changes and MAC address changes . you will have to update the new lan numbers and the associated IP's in /etc/rc.config.d/netconf file and also the MAC address in hpbase100conf or hpetherconf file depending on the type of card you are using .

Then modify the cluster ascii file cmclonf with the new lan numbers and IP addreses . If you are also changin IP addresses you may need to modify the IP/SUBNET pair in the packeg conf files as well .

Then do cmheckconf with the modified files and then apply the modified files with cmapplyconf . THen start the cluster .