Re: Need to reattach downed server

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This works perfectly. Thanks so much Samiskshan!!!


Jordan
> On Apr 26, 2017, at 12:21 PM, Samikshan Bairagya <sbairagy@xxxxxxxxxx> wrote:
> 
> 
> 
> On 04/26/2017 02:06 PM, J.R. W wrote:
>> Hi everyone,
>> 
>> Let’s see. I have one of my servers in my trusted storage pool have a drive go down. It had all the volume configurations in it. /etc/lib/glusterd/vols/ was wiped.
>> 
>> 
>> Now this drive is completely separate from the glusterfs brick. The drive that was corrupted was just part of the /root. The glusterfs brick is actually a direct attached storage to this server. What is the easiest way to copy all the configurations from another member in the trusted pool?
>> 
>> I thought I could just remove it and then re-probe it and it would autogenerate. But since it’s part of the volume, no such luck.
>> 
>> Jordan
>> 
> 
> Hi Jordan,
> 
> The following steps should restore the configuration on the bad node:
> 
> 1. On the bad node (I'm calling this 'N1' for the rest of the steps) remove everything inside /var/lib/glusterd/* (in case there are any contents) and then restart glusterd.
> 2. From one of the good nodes (calling this 'N2'), execute the peer status command and copy the uuid mentioned for N1.
> 3. On N1, replace the uuid in /var/lib/glusterd/glusterd.info with the uuid retrieved from step 2.
> 4. Next, copy /var/lib/glusterd/peers/* from N2 to N1.
> 5. Now on N1:
>    - Find the file which has a filename same as that of the uuid in /var/lib/glusterd/glusterd.info
>    - Rename that file to the uuid of N2 (you can find the uuid of N2 from the /var/lib/glusterd/glusterd.info file on N2)
>    - Open this renamed file now, and replace the uuid and hostname sections with the uuid and hostname of N2 respectively.
>    - Restart glusterd on N1
> 
> Hope this helps.
> 
> ~ Samikshan
> 
>> 
>> 
>> 
>> 
>> 
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>> 

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