Through GUI

Prerequisites

• You must install management node services on the selected two servers. For installation instructions, see Install Management Node.
• Ensure both management nodes have gateway addresses on the same network segment and have consistent NIC names.
• Ensure both management nodes are running the same version.
• Ensure the operating system type and architecture are supported and both management nodes run compatible operating system types.
• Ensure both management nodes use the same license type.

Procedure

1. Log in to the UI management interface of either management node.

   For a new environment that has not been initialized:

   1. In the Welcome to Initialization Wizard dialog, click Next. The system automatically detects the management node HA status.
   2. In the Set Up MN HA dialog, click Go to MN Ops.
   3. A new browser tab opens displaying the MN Ops page.

   For an existing environment:

   1. In the navigation pane, choose Reliability > MN Monitoring.
   2. On the MN Monitoring page, click Go to MN Ops.
   3. A new browser tab opens displaying the MN Ops page.

2. On the MN Monitoring page in MN Ops, click Set Up MN HA.

   

3. In the Set Up MN HA dialog, complete configuring MN, reviewing configuration, and setting up MN HA.

   1. For Configure MN, set the following parameters:

      • VIP: Configure the VIP for accessing the management interface of the management node environment.

        Ensure the VIP is in the same network segment as the active management node IP.

      • Active MN IP: Display the IP address of the active management node. Specify the SSH username and password for the active management node.

      • Standby MN IP: Specify the IP address, SSH username, and SSH password for the standby management node.

Note:

• Ensure the standby management node IP is in the same network segment as the active management node IP.
• When setting up management node HA, the management node password can contain English letters, numbers, and these special characters: `-=[];,./~!@#$%^&*()_+|:<>?``. If your password does not meet this rule, update it before setting up management node HA.
• Time Sync Server: Uses the active management node IP as the time synchronization server by default.
• Force Sync: Disabled by default. If the databases between active and standby management nodes cannot synchronize automatically, run the zsha2 installation command forcibly on the active management node.
• Database Password: If left blank, the initial database password will be used by default. If the password has been changed, enter the new password here.

2. Click Next.

   The system automatically checks if the requirements for addition are met.

3. In the Review Configuration step, check the resource information of both active and standby management nodes.

Note:

1. Upon confirmation, the system will automatically back up databases from active and standby management nodes before proceeding.

2. During this process, the active and standby MNs will shut down and the standby MN's database will be overwritten by the active MN's database. Proceed with caution.

3. If you find that the standby management node contains more resources during the resource comparison, and you want to preserve these resources, we recommend that you select the Switch Active/Standby MNs checkbox. When selected, this option switches the roles of active and standby management nodes, using the resource-rich standby management node as the active management node to set up management node HA.

4. Enter the confirmation information. Then, click OK.

5. In the Set Up MN HA step, view the addition progress and task results.

   

6. After the addition completes successfully, click Go to VIP to access the platform management interface through the VIP.