On 2013-11-30 20:24, ~Stack~ wrote:
> On 11/30/2013 01:03 PM, Nico Kadel-Garcia wrote:
>> You shouldn't have to install NetworkManager for servers. It is *NOT*
>> your friend.
> 
> I agree. However, I have wasted too much time already on this problem
> (several hours last night and several again this morning) and installing
> NetworkManager is the easy way out at the moment. I need and would
> rather focus my attention on the project and not chasing down a DHCP
> problem. It really sucks I have to install so many more unneeded
> packages just to get DHCP to work on boot. Such an absurd problem to have.
> 
>> Neither is DHCP for servers, since sometimes upstream
>> switches have not yet detected the active device by the time your
>> client has scurried its way through the local host restart. In
>> general, I keep servers set statically, and only set them to DHCP when
>> planning a migration. You might this and see if it brings up the
>> network at boot time reliably.
> 
> Agreed. Most of my servers are actually hard set. However, in this
> particular project things would be so much better if I had a working
> DHCP at boot.
> 
>> If the upstream detection is the issue, put a "sleep 10" in the
>> "start" stanza of /etc/nit.d/network. Amusingly enough, you can even
>> put it in /etc/sysconfig/network-scripts/ifcfg-eth0, although that can
>> get irritating and tools like system-config-network or NetworkManager
>> will happily overwrite it.
> 
> Not a bad idea. I just tried it and didn't get it to work. Maybe 10
> seconds is too short?
> 
> I will probably just script something when I have time and shove it into
> puppet. However, it seems to me that others are also having/seen this
> problem. Maybe this should be something fixed upstream?
> 
> Thanks for the help everyone!
> ~Stack~

Are this bare metal boxes or virtual systems?

Perhaps you can find a hint with `dmesg' or by disabling the (annoying)
splash boot so you see what happens when the network is initialized.

As workaround you can create a simple init script that tries to
detect if the network is up and running (ping GW address) and executes
ifdown/ifup.

-- 
olli