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FusionAccess 6.5 Alarm Handling 04

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
1000029 ITA DB Dual Master Exception

1000029 ITA DB Dual Master Exception

Description

The alarm module checks the connection of the third-party backup server once every two minutes. This alarm is generated when the alarm module detects that both GaussDB databases are writable for three consecutive times. This alarm is cleared when the alarm module detects that only one GaussDB database is writable.

Attribute

Alarm ID

Alarm Severity

Auto Clear

1000029

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.

Impact on the System

The data on the two GaussDB databases are inconsistent. After recovery, the service data generated when both GaussDB databases are writable may be lost.

Possible Causes

Assume that DB1 is the active database, DB2 is the standby database, the gateway is GW, and the floating IP is FLOAT. If the network meets all of the following conditions, two active databases exist:

  • DB1 and DB2 cannot detect each other.
  • DB1 and DB2 can detect GW.
  • DB2 cannot detect FLOAT.

Procedure

  1. In FusionAccess > Task, check whether there are ongoing service provisioning operations (such as creating VMs or assigning VMs).

  2. Check whether the alarm "GaussDB Active/Standby Switchover Alarm" is reported in FusionAccess > Alarm Monitoring in the same period.

    • If yes, go to Step 3.
    • If no, contact Huawei technical support.

  3. Record the IP address in the alarm detailed information. This IP address belongs to the original standby GaussDB server that has finally become the active GaussDB server.
  4. In the FusionCompute system, shut down the GaussDB server that corresponds to the recorded IP address.
  5. After no service provisioning operation is performed on FusionAccess, start the GaussDB server that is shut down previously.
  6. Rectify network faults according to the description in possible causes. Ensure that no service provisioning operation is performed on FusionAccess during the troubleshooting process.
  7. Choose FusionAccess > Alarm Monitoring to check whether the alarm still exists.

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

Related Information

None

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Updated: 2019-10-11

Document ID: EDOC1100061083

Views: 4140

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