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FusionAccess 6.5 Alarm Handling 05

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1004006 Active and Standby Database Nodes are Disconnected

1004006 Active and Standby Database Nodes are Disconnected

Description

In the active/standby database deployment scenario, the active database checks the standby database status every 2 minutes. This alarm is generated when the active database detects that the standby database status is abnormal for three consecutive times.

This alarm is cleared when the active database detects that the standby database recovers.

Attribute

Alarm ID

Alarm Severity

Auto Clear

1004006

Critical

Yes

Parameters

Name

Meaning

Alarm ID

Identifies an alarm. Each alarm is uniquely identified by an alarm ID and an alarm name.

Alarm Severity

Indicates the severity of an alarm. Value:

  • Critical: indicates that a fault affecting services provided by the system occurs. You need to rectify the fault immediately. If a device or resource is faulty, rectify it immediately even if the fault occurs during non-working hours.
  • Major: indicates that a fault affecting the service quality of the system occurs. You need to rectify the fault immediately. If the service quality of a device or resource is degraded, rectify it immediately during working hours.
  • Minor: indicates a fault that does not affect service quality. To prevent more serious faults, this type of alarm needs to be observed or handled if necessary.
  • Warning: indicates a fault that may affect service quality. This type of alarm must be handled based on the error type.

Alarm Name

Identifies an alarm. Each alarm is uniquely identified by an alarm ID and an alarm name.

Object Type

Specifies the type of the object for which the alarm is generated.

Alarm Object Name

Specifies the name of the object for which the alarm is generated.

Generation Time

Specifies the time when the alarm is generated.

Clear Time

Specifies the time when the alarm is cleared.

Clear Mode

Specifies whether the alarm is manually or automatically cleared.

Operation

Specifies the operation that can be performed on the alarm.

Value: Manually Clear Alarm

Impact on the System

Active and standby database nodes getting disconnected will result in the data inconsistence in the active and standby databases. The databases should keep connected, if this alarm appeared, you must handle it on the same day.

Possible Causes

  • The HA service of the standby database server is abnormal.
  • Database server abnormal.
  • The active and standby database nodes are disconnect.

Procedure

  1. Choose FusionAccess > Alarm to check whether alarm 1004001 Database Server Abnormal exists and whether the IP address displayed in peer IP address in Detailed Alarm Information is the same as that of the abnormal database server.

  2. Choose FusionAccess > Alarm to check whether the alarm still exists.

    • If yes, go to 3.
    • If no, no further operation is required.

  3. Log on the standby database server, run the shell command gs_ctl query -P database administrator password to check whether the active and standby databases are disconnected.

    • If yes, go to 4.
    • If no, contact Huawei technical support.

      If the information similar to the following is displayed, the active and standby databases are disconnected:

      Ha state: 
              LOCAL_ROLE                     : Standby 
              STATIC_CONNECTIONS             : 1 
              DB_STATE                       : NeedRepair 
              DETAIL_INFORMATION             : repl1: Disconnected 
       
       Senders info: 
              No information 
       Receiver info: 
              No information

  4. On the standby database server, run the shell command gs_ctl restart to restart the database service.
  5. Choose FusionAccess > Alarm to check whether the alarm still exists.

    • If yes, contact Huawei technical support.
    • If no, go to 6.

  6. Checking whether the database data is complete by the following method.

    • Check whether the number of VMs, the user assignment relationships and so on are correct.
    • Check whether the operation logs are complete, whether recent operation logs are missing.

  7. After the above check, whether the database data is complete?

    • If yes, no further operation is required.
    • If no, contact Huawei technical support.

Related Information

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Updated: 2019-12-13

Document ID: EDOC1100061083

Views: 7349

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