On Monday, February 24, 2014 7:17:28 AM UTC-8, jcbollinger wrote:
>
>
>
> On Friday, February 21, 2014 10:50:20 AM UTC-6, JonY wrote:
>>
>> I have 36 (seemingly) identical machines deployed from a single manifest.
>>
>
>
> Puppet does not do deployment, only post-deployment configuration.  I 
> raise that here because I think it likely that the problem likely boils 
> down to a deployment issue.
>
>  
>
>> For some reason I'm getting this error in my logs for a subset of them. 
>>
>> /etc/hosts:
>>
>> 127.0.0.1 hostname hostname.fqdn localhost
>>
>>
>
> Maybe nowhere else.  That hosts entry is bogus on at least two grounds:
>
>    1. You should not be pointing the host's primary name at a loopback 
>    address.  If you list it in /etc/hosts at all, it should be pointed at the 
>    IP address assigned to the host's primary network interface.
>    2. The canonical name field of each entry (the second) should hold the 
>    fqdn.  The unqualifed name, if listed, should be among the aliases 
>    (subsequent fields).
>
> Example:
>
> 192.168.0.42 host.mydomain.com host 
> 127.0.0.1    localhost.localdomain localhost
>
> Traditionally, the host's own name needed to be first in /etc/hosts, as 
> that was how machines determined their own names.  That might still be the 
> case for some UNIX flavors, but I don't think it's common any longer.  It 
> doesn't work well for machines with dynamic IPs, so many systems use an 
> alternative means to record a machine's hostname.  On RedHat-family 
> Linuxes, at least, that's the 'HOSTNAME' entry in file 
> /etc/sysconfig/network.  Machines that employ such a mechanism do not 
> normally require a machine's own hostname to be listed in /etc/hosts at all.
>
> It may be illuminating to run the 'dnsdomainname' command on one of the 
> affected machines.  If it does not give the correct fully-qualified name 
> for the machine, then the machine is configured wrongly.  Such an error is 
> an initial provisioning / deployment problem.  You should assign the 
> machine its name before first firing up the Puppet agent on it.
>
>
> John
>
>

I think I found the problem. On the systems that have this error the 
/etc/resolv.conf file is missing the 'domain <name.org>' line. It's getting 
wiped out / replaced by DHCP at boot time. 

If I add the appropriate line back in the error goes away. I'll add a 
template file to puppet to maintain this add see what happens.

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