On Jun 9, 2009, at 10:42 AM, Randal, Phil wrote: > Option 5: Install a local caching DNS server on your nagios box, > and put 127.0.0.1 at the top of resolv.conf.
My reading of the issue, and I believe that I've seen it in the past as well, is that the problem isn't with DNS resolution on the nagios box but DNS resolution happening on the target boxes. Installing a caching nameserver on the nagios box isn't going to help any. The target system is trying to do a DNS lookup on the connecting host (nagios). The OP isn't specific on how he's checking these boxes so it could be xinetd, nrpe, whatever... The default timeout for DNS server failure detection in the resolver libraries is too long so the plugin times out. I'd personally look at changing that timeout and rotation between servers in resolv.conf (options timeout:x rotate). -- Marc ------------------------------------------------------------------------------ Crystal Reports - New Free Runtime and 30 Day Trial Check out the new simplified licensing option that enables unlimited royalty-free distribution of the report engine for externally facing server and web deployment. http://p.sf.net/sfu/businessobjects _______________________________________________ Nagios-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
