[Veritas-bu] bpclntcmd and others ignoring nsswitch.conf?

On a UNIX (HP-UX) media server when I run bpclntcmd –hn <client> (and other bp commands) it appears they’re ignoring the IP specified for the client in /etc/hosts.

The server also exists in DNS but my nsswitch.conf clearly says to use files (i.e. /etc/hosts) then dns. If I run command line tests using other tools (e.g. nslookup and ping) the IP seen for the client is the one in /etc/hosts. However, bpclntcmd is giving me the one from DNS. The IPs are different because we have use a separate subnet for backup LAN.

I’ve done a fair amount of searching and have read this technote:

http://www.symantec.com/business/support/index?page=content&id=TECH141117&key=15143&actp=LIST

I had actually rebooted the server for another reason about an hour and a half after I changed /etc/hosts yesterday. According to all the notes I found the cache should clear itself about an hour after making a change but that didn’t happen.

This morning I still saw the issue. I tried reissuing the bpclntcmd –clear_host_cache (new in 7.x) and bouncing NetBackup on the media server to no avail.

Based on the above technote I have tried moving the cache directory out and bouncing NetBackup again to no avail.

I also tried just for the hell of it stopping the pbx_exchange daemon and restarting then bouncing NetBackup but that didn’t help either.

Interestingly bpclntcmd –hn <client> on the RHEL6 Linux master returns the correct IP from /etc/hosts file there. Running bpclntcmd on the client itself with various flags (e.g. –pn, -self) find the correct master etc…

My backup is failing with a status 59 – can’t connect to client and I’m assuming it is because the media server is getting the wrong IP for the client. (The client has an entry in its hosts file specifying the backup LAN IP of the media server – this is the same as it was in 6.5.4 except we were using a Windows media server then.)

P.S. On HP-UX nslookup DOES look at /etc/hosts unlike nslookup on other *nix flavors so please don’t respond that using nslookup for /etc/hosts isn’t valid. As noted ping also works so such an observation wouldn’t be helpful even if it weren’t incorrect. The issue isn’t host name resolution in UNIX but rather hostname resolution done by NetBackup commands.

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Proud partner. Susan G. Komen for the Cure.

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