As per title, do NOT install/upgrade OMI agent on NNMi boxes to v12, as this will overwrite files in the /opt/OV/nonOV/perl directory. NNMi9 relies on Per 5.8.8 however 5.16.0 files will be installed when the OMI agent is installed.
Likely the first issues you will see will be NNMi self monitoring alerts, and then you’ll notice that you can’t run any of the .ovpl commands any more, getting a message like this:
Can't locate OVNNMvars.pm in @INC (@INC contains: /opt/OV/nonOV/perl/a/lib/site_perl/5.16.0/x86_64-linux-thread-multi /opt/OV/nonOV/perl/a/lib/site_perl/5.16.0 /opt/OV/nonOV/perl/a/lib/5.16.0/x86_64-linux-thread-multi /opt/OV/nonOV/perl/a/lib/5.16.0 /opt/OV/nonOV/perl/a/lib/site_perl/5.16.0/x86_64-linux-thread-multi /opt/OV/nonOV/perl/a/lib/site_perl/5.16.0 /opt/OV/nonOV/perl/a/lib/site_perl .) at /opt/OV/bin/nnmversion.ovpl line 19. BEGIN failed--compilation aborted at /opt/OV/bin/nnmversion.ovpl line 19.
It wasn’t fun getting back to a known state but we managed in the end by looking at what files the agent had installed/modified and restoring backups. Avoid the pain by not getting into the situation in the first place – also make sure you’re not just backing up data files but binaries as well.
The latest version of NNM10 uses Perl 5.16.0 I believe so this shouldn’t be an issue. I’d personally still avoid installing any product that uses the same file structure.