Changing host name
Rick Stevens
ricks at nerd.com
Thu Apr 8 01:16:39 UTC 2010
On 04/07/2010 06:03 PM, Paul W. Frields wrote:
> On Wed, Apr 07, 2010 at 01:34:35PM -0700, Rick Stevens wrote:
>> On 04/07/2010 10:51 AM, Tom H wrote:
>>>>>>> I've never found a need to reboot on changing hostnames. The most
>>>>>>> drastic action I've taken was to "service network restart".
>>>
>>>>>> One wold assumme if yo are using 'service network start' you are not
>>>>>> using NM so your comments about the changing hostname may not apply to
>>>>>> the OP's system.
>>>
>>>>> Unless I'm out of my mind...that assumption would not be true.....
>>>>> Even if you use NM you can still use "service network restart". When
>>>>> one uses NM the directories /etc/sysconfig/networking/profiles/default
>>>>> and /etc/sysconfig/networking/devices are empty. This is the case on my
>>>>> system.
>>
>> I would highly recommend you DON'T use "service network restart" if
>> you're using NM. The two are not compatible in many areas.
>>
>>>> I have no opinion on the soundness of this, but "service NetworkManager
>>>> restart" is what I use myself.
>>
>> I believe that's what's required if you do some manual reconfig of the
>> network behind NM's back.
>>
>>> There is a "NM_CONTROLLED" variable that can be set in the ifcfg-*
>>> scripts to use one or the other (although I do not see where my F13
>>> init.d scripts check for its value.)
>>
>> I'm not sure they do. I believe the idea is that NM would ONLY futz
>> with interfaces marked thus and leave the others alone.
>>
>> With both classic and NM enabled, the normal startup sequence would
>> "service network start" at sequence 10, then "service NetworkManager
>> start" at sequence 23 The way I read it, classic could play with all
>> the NICs and NM would only touch the ones marked "NM_CONTROLLED",
>> undoing what classic did to them.
>
> Just to be clear, NM_CONTROLLED is not a marker, it's a variable. You
> would set NM_CONTROLLED=no for an interface where you didn't want NM
> to monitor or change its state.
Yes, it is a variable. If the content of it is anything other than
"yes" or if the variable isn't defined, NM is supposed to ignore the
interface.
I won't swear to that. There's virtually no NM documentation.
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