Oracle clusterware interfaces renamed after OS upgrade to RHEL7
Date: Wed, 8 Apr 2020 13:42:26 +0000
Message-ID: <DM6PR11MB34836E29433C2F188E41735AF4C00_at_DM6PR11MB3483.namprd11.prod.outlook.com>
Hi,
I have a three-node RAC running on RHEL6. The grid version is 12.1.0.2. To upgrade the OS from RHEL6 to RHEL7, we took the following path as suggested by Oracle:
- Delete the node before the OS upgrade.
- Perform the OS upgrade on the deleted node.
- Add the node back and perform the relink.
To upgrade the OS, our data center folks installed the new OS on a new disk, detached the old disk and attached the one with the new OS. After the upgrade, some of the RAC interfaces were renamed by the OS as shown below:
Old name --> New name eth7 --> eth9 eth8 --> eth4 eth9 --> eth10
I have been told by our data center folks that in RHEL7 these interfaces were reordered and that RHEL 7 does not give us the same easy ability to reorder the cards as in the previous version. It is my understanding that an interface name in RAC has to be consistent across the cluster (eth8 on node1 as a private interconnect has to have the same name on node2 and nod3), and therefore, with the reordering of interfaces, it will not be possible to add the node back into the cluster. Has anyone gone through a similar scenario as ours? How were you able to resolve it?
Any feedback will be appreciated.
Thanks,
Amri
-- http://www.freelists.org/webpage/oracle-lReceived on Wed Apr 08 2020 - 15:42:26 CEST