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Full Discussion: HP-UX DNS issue
Operating Systems HP-UX HP-UX DNS issue Post 302887312 by methyl on Thursday 6th of February 2014 06:56:56 PM
Old 02-06-2014
Assuming that 192.168.1.1 and 192.168.1.2 are both DNS servers and that they are Primary and Secondary respectively.

You can test whether they are both working DNS servers with:
nslookup microsoft.com 192.168.1.1
nslookup microsoft.com 192.168.2.1

The /etc/nsswitch.conf posted will give up if the Primary DNS is down.
With "NOTFOUND=return" first I don't think that your server will ever look at the secondary (or any reserve) DNS's listed in your /etc/resolv.conf .

Unless your server does tons of DNS lookups on computers which are for some reason not in your DNS, imho this is much better:

hosts: dns [NOTFOUND=continue UNAVAIL=continue TRYAGAIN=continue] files

(I cut/paste this from one of my long-term reliable computers. Not my original work and I would like to credit the tip, but it's been too long).

Last edited by methyl; 02-06-2014 at 08:02 PM..
 

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rpc.nisd_resolv(1M)					  System Administration Commands				       rpc.nisd_resolv(1M)

NAME
rpc.nisd_resolv, nisd_resolv - NIS+ service daemon SYNOPSIS
rpc.nisd_resolv [-v | -V] [ -F [-C fd]] [-t xx] [-p yy] DESCRIPTION
rpc.nisd_resolv is an auxiliary process which provides DNS forwarding service for NIS hosts requests to both ypserv and rpc.nisd that are running in the NIS compatibility mode. It is generally started by invoking rpc.nisd(1M) with the -B option or ypserv(1M) with the -d option. Although it is not recommended, rpc.nisd_resolv can also be started independently with the following options. This command requires that the /etc/resolv.conf file be setup for communication with a DNS nameserver. The nslookup utility can be used to verify communication with a DNS nameserver. See resolv.conf(4) and nslookup(1M). OPTIONS
-F Run in foreground. -C fd Use fd for service xprt (from nisd). -v Verbose. Send output to the syslog daemon. -V Verbose. Send output to stdout. -t xx Use transport xx. -p yy Use transient program# yy. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWnisu | +-----------------------------+-----------------------------+ SEE ALSO
nslookup(1M), rpc.nisd(1M), resolv.conf(4), attributes(5) NOTES
NIS+ might not be supported in future releases of the SolarisTM Operating Environment. Tools to aid the migration from NIS+ to LDAP are available in the Solaris 9 operating environment. For more information, visit http://www.sun.com/directory/nisplus/transition.html. SunOS 5.10 12 Dec 2001 rpc.nisd_resolv(1M)
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