[Gluster-users] Suggested method for replacing an entire node

[Atin Mukherjee]

On 10/08/2015 09:52 PM, Gene Liverman wrote:
>  Thanks for all the replies! Just to make sure I have this right, the
> following should work for *both* machines with and machines without a
> currently populated brick if the name and IP stay the same:
> 
>   * reinstall os
>   * reinstall gluster software
>   * start gluster
> 
> Do I need to do any peer probing or anything else? Do I need to do any
> brick removal / adding (I'm thinking no but want to make sure)?
No you don't.
> 
> 
> 
> 
> Thanks,
> *Gene Liverman*
> Systems Integration Architect
> Information Technology Services
> University of West Georgia
> gliverma at westga.edu <mailto:gliverma at westga.edu>
> 
> ITS: Making Technology Work for You!
> 
> 
> 
> On Thu, Oct 8, 2015 at 9:52 AM, Alastair Neil <ajneil.tech at gmail.com
> <mailto:ajneil.tech at gmail.com>> wrote:
> 
>     Ahh that is good to know.
> 
>     On 8 October 2015 at 09:50, Atin Mukherjee
>     <atin.mukherjee83 at gmail.com <mailto:atin.mukherjee83 at gmail.com>> wrote:
> 
>         -Atin
>         Sent from one plus one
>         On Oct 8, 2015 7:17 PM, "Alastair Neil" <ajneil.tech at gmail.com
>         <mailto:ajneil.tech at gmail.com>> wrote:
>         >
>         > I think you should back up /var/lib/glusterd and then restore it after the reinstall and installation of glusterfs packages.  Assuming the node will have the same hostname and ip addresses and you are installing the same version gluster bits, I think it should be fine.  I am assuming you are not using ssl for the connections if so you will need to back up the keys for that too.
>         If the same machine is used with out hostname/ IP change,
>         backing up glusterd configuration *is not* needed as syncing the
>         configuration will be taken care peer handshaking.
> 
> 
>         >
>         > -Alastair
>         >
>         > On 8 October 2015 at 00:12, Atin Mukherjee
>         <amukherj at redhat.com <mailto:amukherj at redhat.com>> wrote:
>         >>
>         >>
>         >>
>         >> On 10/07/2015 10:28 PM, Gene Liverman wrote:
>         >> > I want to replace my existing CentOS 6 nodes with CentOS 7
>         ones. Is
>         >> > there a recommended way to go about this from the
>         perspective of
>         >> > Gluster? I am running a 3 node replicated cluster (3
>         servers each with 1
>         >> > brick). In case it makes a difference, my bricks are on
>         separate drives
>         >> > formatted as XFS so it is possible that I can do my OS
>         reinstall without
>         >> > wiping out the data on two nodes (the third had a hardware
>         failure so it
>         >> > will be fresh from the ground up).
>         >> That's possible. You could do the re-installation one at a
>         time. Once
>         >> the node comes back online self heal daemon will take care of
>         healing
>         >> the data. AFR team can correct me if I am wrong.
>         >>
>         >> Thanks,
>         >> Atin
>         >> >
>         >> >
>         >> >
>         >> >
>         >> > Thanks,
>         >> > *Gene Liverman*
>         >> > Systems Integration Architect
>         >> > Information Technology Services
>         >> > University of West Georgia
>         >> > gliverma at westga.edu <mailto:gliverma at westga.edu>
>         <mailto:gliverma at westga.edu <mailto:gliverma at westga.edu>>
>         >> >
>         >> > ITS: Making Technology Work for You!
>         >> >
>         >> >
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>         >> >
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