[DRBD-user] Changing Hostname

Ian Knight ian at 34sp.com
Fri May 16 22:53:03 CEST 2008

Note: "permalinks" may not be as permanent as we would like,
direct links of old sources may well be a few messages off.


LINBIT Support - Lars Ellenberg wrote:
> On Fri, May 16, 2008 at 06:30:55PM +0100, Ian Knight wrote:
>   
>> Lars Ellenberg wrote:
>>     
>>> On Fri, May 16, 2008 at 01:06:49PM +0100, Ian Knight wrote:
>>>   
>>>       
>>>> Hi,
>>>>
>>>> We have a situation where we need to update the hostname of the 
>>>> machines  that host a drbd system.
>>>>
>>>> I thought it would be a matter of update hostname, and then update 
>>>> the  drbd.conf and restart drbd.
>>>>
>>>> Sadly this does not seem to be the case, as it seems drbd stores the  
>>>> hostnames in the meta-data - is there anyway to update this?
>>>>     
>>>>         
>>> no, it does not.
>>> what makes you think so?
>>>
>>> what does "uname -n" say?
>>>       
>
>   
>> Uname -n would return the master.CORRECTDOMAIN.com
>>     
>
> would you please just type in "uname -n",
> and copy'n'paste the output into your drbd.conf?
>
>   
For security reasons i can not on a public list - but it is 
"master.CORRECTDOMAIN.com"
>> For the time being i have had to set the hostname back to  
>> master.INCORRECTDOMAIN.com - but ideally i would like to update it  
>> properly which means updating the hostname within the meta-data i would  
>> imagine.
>>     
>
> again, DRBD does NOT store anything hostname related anywhere.
> drbdadm just does a "uname -n" equivalent, and looks for a "on
> $thatname" section in the config file.
>
>   
So does drbdadm dump-xml just get its info from the drbd.conf file?

> do you happen to use the ofc drbd resource agent,
> and the "clone overrides hostname" misfeature?
> if so, you'd need to change your "override" as well...
>
>   
Im afraid i dont understand this question - i am just using drbd on a 
centos5 x86_64 kernel.

--
Ian



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