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EVO:RAIL vSAN VLAN Troubleshooting (2118997)

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Symptoms

EVO:RAIL requires a vSAN VLAN on your switch that is configured with IPv4 multicasting. When it is not working properly, you experience these symptoms:

  • EVO:RAIL Management displays the total disk size for the MARVIN-Virtual-SAN-Datastorexxxx to be 3.35 TB of space. A single EVO:RAIL appliance should show 13.1 TB of space for the MARVIN-Virtual-SAN-Datastorexxxx.
  • vSphere Web Client displays this error in the Network Status field for Virtual SAN:

    Misconfiguration Detected

Resolution

To troubleshoot and re-enable your vSAN network:

  1. Verify that the vSAN VLAN settings specified during EVO:RAIL Initial Configuration match the VLAN configuration on the switch using these steps:

    1. For each ESXi host in the EVO:RAIL appliance:

      1. Log in as root user to the ESXi host using a console or SSH session. For more information, see Using ESXi Shell in ESXi 5.x and 6.0.
      2. Run this command to identify the IP addresses assigned to each ESXi host on the vmk3 interface:

        esxcli network ip interface ipv4 get

      3. Make a note of the IPv4 addresses for the vmk3 interface on each ESXi host.

        ESXi host ESXi IPv4 Address for vmk3
        Node 1
        Node 2
        Node 3
        Node 4

    2. For each ESXi host, verify that it can communicate with the other 3 ESXi hosts using these steps:

      1. Log in as root to the ESXi host using a console or SSH session. For more information, see Using ESXi Shell in ESXi 5.x and 6.0.
      2. Run this command to verify network connectivity between the hosts:

        vmkping –I vmk3 ESXi_IPv4_address

        Note: Using the table in Step 1a, run this command replacing ESXi_IPv4_addressowith the IP addresses for the vmk3 interface on each host.

      3. Repeat this process for each host in the EVO:RAIL appliance.

    3. If the ping fails, you will need to verify that the switch and EVO:RAIL configurations match.
    4. If the switch and EVO:RAIL configuration match, proceed to Step 2.

  2. Re-enable the vSAN network on all the ESXi hosts using these steps:

    1. Log in to vCenter Server Appliance via ssh as a user with administrator privileges.
    2. Run this command to start the Ruby vSphere Console (RVC):

      rvc

    3. When prompted, enter these values:

      1. Host to connect to: root@localhost
      2. Are you sure you want to continue: y
      3. Password: vCenter Server password

    4. Run these commands to navigate to the hosts directory and list the directory contents:

      cd localhost/MARVIN-Datacenter/computers/MARVIN-Virtual-SAN-Cluster- uuid/hosts
      ls

    5. From the output in Step 2d, determine the host numbers identified as the first character line. This is an sample example of the output shown with the host numbers highlighted:

      0host01.localdomain.local (host): cpu 2*12*2.09 GHz, memory 206.00 GB
      1host03.localdomain.local (host): cpu 2*12*2.09 GHz, memory 206.00 GB
      2host04.localdomain.local (host): cpu 2*12*2.09 GHz, memory 206.00 GB
      3host02.localdomain.local (host): cpu 2*12*2.09 GHz, memory 206.00 GB


    6. Run these commands to restart vSAN for all ESXi host on the EVO:RAIL appliance one at a time a time using these commands:

      vsan.reapply_vsan_vmknic_config 0
      vsan.reapply_vsan_vmknic_config1
      vsan.reapply_vsan_vmknic_config2
      vsan.reapply_vsan_vmknic_config3

    7. Verify that the problem is resolved. To verify, you may:

    • From EVO:RAIL management, verify the storage capacity is 13.1 TB.
    • From vSphere Web Client, verify that you no longer see the error:

    1. If the problem persists, go to Step 3.

  3. Verify the vSAN VLAN on your switch is configured for IPv4 multicast. For more information, see Virtual SAN Troubleshooting: Multicast.

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