3.7. Shutting Down and Starting Up Cluster Nodes¶

To shut down a Virtuozzo Storage cluster completely, do the following:

1. Stop and disable the following services: shaman, pdrs, vstorage-iscsi, and va-agent (in case Virtuozzo Automator is installed):

   # systemctl stop shaman pdrs vstorage-iscsid va-agent
   # systemctl disable shaman pdrs vstorage-iscsid va-agent
   

2. Check what containers and virtual machines are running in the cluster with the prlctl list command and shut them down using prlctl stop. For example:

   #  prlctl list
   UUID                                    STATUS       IP_ADDR         T  NAME
   {8330ff27-5e84-4d13-a69c-63f3f8a3c516}  running      -               VM MyVM
   # prlctl stop MyVM
   Stopping the VM...
   The VM has been successfully stopped.
   

3. Stop and disable the prl-disp and vz services:

   # systemctl stop prl-disp vz
   # systemctl disable prl-disp vz
   

4. If you use Virtuozzo Storage GUI, also stop and disable the vstorage-ui-agent service:

   # systemctl stop vstorage-ui-agent
   # systemctl disable vstorage-ui-agent
   

5. Stop all clients in the cluster. To do this, on each client:

   1. Make sure no storage files are opened using the lsof utility. For example, for the stor1 cluster, run

      # lsof +D /vstorage/stor1
      

   2. Unmount the cluster file system using the umount command. For example, if the cluster is mounted to the /vstorage/stor1 directory on a client, you can unmount it as follows:

      # umount /vstorage/stor1
      

   3. Disable the automatic mounting of the cluster by removing the cluster entry from the /etc/fstab file.

6. Stop and disable all CS and MDS servers:

   # systemctl stop vstorage-csd.target vstorage-mdsd.target
   # systemctl disable vstorage-csd.target vstorage-mdsd.target
   

7. Shut down cluster servers.

To start up a Virtuozzo Storage cluster again, do the following:

1. Power on cluster servers.

2. Start and enable all MDS and chunk servers:

   # systemctl start vstorage-mdsd.target vstorage-csd.target
   # systemctl enable vstorage-mdsd.target vstorage-csd.target
   

3. Enable the automatic mounting of the cluster by adding the cluster entry to the /etc/fstab file and mount the cluster file system using the mount command.

4. If you use Virtuozzo Storage GUI, also start and enable the vstorage-ui-agent service:

   # systemctl start vstorage-ui-agent
   # systemctl enable vstorage-ui-agent
   

5. Start and enable the following services: prl-disp, vz, shaman, pdrs, vstorage-iscsid, and va-agent (in case Virtuozzo Automator is installed):

   # systemctl start prl-disp vz shaman pdrs vstorage-iscsid va-agent
   # systemctl enable prl-disp vz shaman pdrs vstorage-iscsid va-agent
   

6. Start containers and virtual machines with the prlctl start command. For example:

   # prlctl start MyVM
   Starting the VM...
   The VM has been successfully started.