Re: Oracle clusterware interfaces renamed after OS upgrade to RHEL7

Hi

You can rename network interfaces in Red Hat

https://www.thegeekdiary.com/centos-rhel-7-how-to-modify-network-interface-names/

On Wed, Apr 8, 2020 at 3:44 PM Hameed, Amir <Amir.Hameed_at_xerox.com> wrote:

> 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:
>
> 1) Delete the node before the OS upgrade.
>
> 2) Perform the OS upgrade on the deleted node.
>
> 3) 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
>

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