Re: mount with one alive node in replica set

Ravishankar N <ravishankar@xxxxxxxxxx> · Thu, 18 Jun 2015 16:48:16 +0530



    On 06/18/2015 04:25 PM, Игорь Бирюлин
      wrote:

    
                  Thank you for you answer!

                    
                  I check recomendation:

                
                1. On first node closed all connection from second
                  node by iptables. Check that on both nodes "gluster
                  peer status" return  "Disconnected". Check that on
                  both nodes share was mounted and work well like local
                  file system.

                
                2. Rebooted second node (remind first node closed by
                    iptables). Second node booted without problem and
                    proccesses of glusterfs started:

                    # ps aux | grep [g]luster

                    root      4145  0.0  0.0 375692 16076 ?        Ssl 
                    13:35   0:00 /usr/sbin/glusterd -p
                    /var/run/glusterd.pid

                  
              "gluster peer status" return "Disconnected" and
                  volume started on localhost:

                  # gluster volume info

                   Volume Name: files

                  Type: Replicate

                  Volume ID: 41067184-d57a-4132-a997-dbd47c974b40

                  Status: Started

                  Number of Bricks: 1 x 2 = 2

                  Transport-type: tcp

                  Bricks:

                  Brick1: xxx1:/storage/gluster_brick_repofiles

                  Brick2: xxx2:/storage/gluster_brick_repofiles

                  
            Вut
                I cann't mount this volume:

                # cat /etc/fstab |grep gluster

                127.0.0.1:/files                           
                /repo           glusterfs       rw,_netdev             
                0 0

                # mount /repo

                Mount failed. Please check the log file for more
                details.

                
          Part
              of log I have sent in first message.

              
        If I
            will open first node by iptables I could mount without
            problem, but what must I do, when I lost one node and I have
          probability reboot another node?

          
    `gluster volume start <volname> force` doesn't work?

    
        2015-06-17 18:46 GMT+03:00 Ravishankar
          N <ravishankar@xxxxxxxxxx>:

          
              On 06/17/2015 07:04 PM, Игорь Бирюлин wrote:

              
                If we turn off one server, another will be work and
                mounted volume will be use without problem.

                But if we rebooted our another server, when first was
                turned off (or gluster was stopped on this server), our
                volume cann't mount (glusterd started).

              
            If both nodes are down and you bring up only one node,
            glusterd will not start the volume (i.e. the brick, nfs and
            glustershd processes) automatically. It waits for the other
            node's glusterd also to be up so that they are in sync. You
            can override this behavior by doing a `gluster volume start
            <volname> force` to bring up the gluster process only
            on this node and then mount the volume.

            
            -Ravi

          
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