[CentOS] Slow domain resolution problem - kind of resolved

Sat Aug 28 14:22:33 UTC 2010
Gabriel Tabares <gabriel.tabares at roboreus.com>

  Hi everyone,

I am answering this here as  I found a workaround.

I could not solve the solution when using the Juniper as the DNS server, 
so I reverted to using bind and that fixed the issue.

Thanks for the help, everybody.


> I've just joine the list as I am having an issue with our CentOS servers.
> The domain resolution is extremely slow from the application but doing
> an nslookup gives an immediate response. All the applications have the
> same issue, as do all the servers.
> I have been looking for the solution all over the web and all I have
> found are references to disabling ipv6.
> - By setting enable_ipv6 = no in /etc/sysconfig/network, which is
> already done on all the machines.
> - By blacklisting the ip6 module, which is not an option as it is used
> by the bonding module. Just for the sake of it, I tried it and, as
> expected, the bonding module did not come back up.
> If bad comes to worse, I could set up host entries for the main machines
> in /etc/hosts, but I really am trying to avoid that.
> Any suggestions?
> Thanks
> Gabriel Tabares