> It is actually worse than that: for as long as I remember RH 
> has included a trap for young players where if you edit 
> /etc/hosts all sorts of interesting things may happen after 
> next reboot. Or rpm update.
> Depending on your choice of editor and phase of the moon.
> 
> None of my RH6 machines have the hostname in /etc/hosts 
> anymore anyway, all there is is localhost and localhost6. 
> (And I think RHEL5 install scripts may or may not put it 
> there dep. on the install mode: DVD vs netboot or something.)
> 
> --
> Dimitri Maziuk

I only have 30 or so RHEL servers (5.X and 6.X) but they all have the hostnames 
in /etc/hosts using the format...

a.b.c.d thishost.domain.com     thishost

Things work fine as far as I have been able to tell over the past 6 years. 
There are some functions that I don't want to be dependent on dns. The last 
ting I want is cluster failure because some component can't resolve the address 
of the other nodes because the dns servers are unreachable for whatever reason.

> *Using the hostname* is against best practices. Reading it 
> from /etc/hosts is an automatic F on unix network programming.
> 

What's the point of having...

hosts: files,dns

..in nsswitch.conf if it is against best practices? I might be misunderstanding 
your meaning. 
 
--
Eric Robinson









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