• MapReduce Service

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  6. ALM-25500 KrbServer Service Unavailable

ALM-25500 KrbServer Service Unavailable

Description

The system checks the KrbServer service status every 30 seconds. This alarm is generated when the KrbServer service is abnormal and is cleared when the KrbServer service is in the normal state.

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

25500

Critical

Yes

Parameters

Parameter

Description

ServiceName

Specifies the service for which the alarm is generated.

RoleName

Specifies the role for which the alarm is generated.

HostName

Specifies the host for which the alarm is generated.

Impact on the System

  • No operation can be performed for the KrbServer component in the cluster.
  • KrbServer authentication of other components will be affected.
  • The health status of components that depend on KrbServer in the cluster is Bad.

Possible Causes

  • The node where the KrbServer service resides is faulty.
  • The OLdap service is unavailable.

Procedure

  1. Check whether the node where the KrbServer service locates is faulty.

    1. On MRS Manager, choose Service > KrbServer > Instance to go to the KrbServer instance page. Obtain the host name of the node where the KrbServer service resides.
    2. On the Alarm page of MRS Manager, check whether alarm ALM-12006 Node Fault is generated.
      • If yes, go to 1.c.
      • If no, go to 2.a.
    3. Check whether the host name in the alarm is consistent with the host name in 1.a.
      • If yes, go to 1.d.
      • If no, go to 2.a.
    4. Rectify the fault by following the steps provided in ALM-12006 Node Fault.
    5. In the alarm list, check whether alarm ALM-25500 KrbServer Service Unavailable is cleared.
      • If yes, no further action is required.
      • If no, go to Step 3.

  2. Check whether the OLdap service is unavailable.

    1. On the Alarm page of MRS Manager, check whether alarm ALM-12004 OLdap Resource Is Abnormal is generated.
    2. Rectify the fault by following the steps provided in ALM-12004 OLdap Resource Is Abnormal.
    3. In the alarm list, check whether alarm ALM-25500 KrbServer Service Unavailable is cleared.
      • If yes, no further action is required.
      • If no, go to Step 3.

  3. Collect fault information.

    1. On MRS Manager, choose System > Export Log.
    2. Contact technical support engineers for help, detail see technical support.

Related Information

N/A