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HUAWEI CLOUD Stack 6.5.0 Alarm and Event Reference 04

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ALM-16019 ELB LVS Node Split-brain

ALM-16019 ELB LVS Node Split-brain


This alarm is generated when the arbitration center cannot detect two master LVS nodes.


Alarm ID

Alarm Severity

Alarm Type



Communications alarm

Parameters (for Alarm Locating)

Table 17-16 Parameters





Namespace to which the ELB service belongs.



Name of the service that generates the alarm.



Name of the microservice that generates the alarm.



List of LVS node IP addresses.


IP address of the node triggering the alarm.

Impact on the System

Sessions between two LVS nodes may be lost.

Possible Causes

The keepalived heartbeat between two LVS nodes is interrupted, but the arbitration center cannot detect heartbeat interruption.


Perform the following steps:

  1. Log in to the FusionStage tenant management zone console.

    The console address is https://Access address of the console home page, for example,

  2. Choose Console > Application > FusionStage from the main menu.
  3. Choose Application Operations> Application Operations.
  4. Choose Alarm Center > Alarm List to query the following alarm information:

    Additional information: Split brain occurs on the ELB LVS node, which may hinder the ELB service forwarding.

  5. Use PuTTY to log in to the LVS node.

    The default username is paas. The default password is QAZ2wsx@123!.

  6. Run the following command and enter the password QAZ2wsx@123! of the root user to switch to the root user:

    su - root

  7. Run the following command to check the status of the current LVS node:

    Run the following command:

    cat /etc/keepalived/status

    Check whether both nodes are in the master state.

    • If they are, go to 8.
    • If the status of one management node is master and that of the other is backup, the network is restored and the alarm is cleared.

  8. Run the PING command to check whether the two nodes are connected.

    • If the network is disconnected, fix the network first.
    • If the network is connected but the problem persists, contact technical support.

Alarm Clearance

After the fault is rectified, the system automatically clears the alarm.

Related Information


Updated: 2019-08-30

Document ID: EDOC1100062365

Views: 45004

Downloads: 33

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