Re: un-expected warning message when atempting to build a 4 node gluster setup.

Ravishankar N <ravishankar@xxxxxxxxxx> · Mon, 16 Apr 2018 09:48:47 +0530



    On 04/16/2018 05:15 AM, Thing wrote:

    
      Hi,
        

        I am on centos 7.4 with gluster 4.
        

        I am trying to a distributed and replicated volume on the 4
          nodes
        

        I am getting this un-expected qualification,
        

          [root@glustep1 brick1]# gluster volume create gv0 replica
            2 glusterp1:/bricks/brick1/gv0 glusterp2:/bricks/brick1/gv0
            glusterp3:/bricks/brick1/gv0 glusterp4:/bricks/brick1/gv0
          

          8><----
          

          Replica 2 volumes are prone to split-brain. Use Arbiter
            or Replica 3 to avoid this. See: http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/.
          Do you still want to continue?
           (y/n) n
        
        
        8><-----
        

        Looking at both gluster docs and redhat docs this seems
          un-expected.
      
    
    This warning was introduced from glusterfs 3.11 onward to encourage
    people to move away from replica 2 and use arbiter (or replica 3)
    instead.  If you are okay with the split-brain issues inherent in
    replica 2, you can still go ahead and create it.

    Regards,

    Ravi

    
        regards
        

        Steven
      
      
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