Help Center/ MapReduce Service/ User Guide (Kuala Lumpur Region)/ FusionInsight Manager Operation Guide (Applicable to 3.x)/ Alarm Reference (Applicable to MRS 3.x)/ ALM-12067 Tomcat Resource Is Abnormal
Updated on 2022-08-12 GMT+08:00
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ALM-12067 Tomcat Resource Is Abnormal

Alarm Description

HA checks the Tomcat resources of Manager every 85 seconds. This alarm is generated when HA detects that the Tomcat resources are abnormal for 2 consecutive times.

This alarm is cleared when the Tomcat resource is normal.

Resource Type of Tomcat is Single-active. Active/standby will be triggered upon resource exceptions. When this alarm is generated, the active/standby switchover is complete and new Tomcat resources have been enabled on the new active FusionInsight Manager. In this case, this alarm is cleared. This alarm is used to notify users of the cause of the active/standby switchover.

Attribute

Alarm ID

Alarm Severity

Auto Clear

12067

Major

Yes

Parameters

Parameter

Description

Source

Specifies the cluster or system for which the alarm is generated.

ServiceName

Specifies the name of 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

  • The active/standby FusionInsight Manager switchover occurs.
  • The Tomcat process repeatedly restarts.

Possible Causes

  • The Tomcat directory permission is incorrect. The Tomcat process is abnormal.

Procedure

Check whether the Tomcat directory permission is normal.

  1. In the alarm list on FusionInsight Manager, locate the row that contains the alarm, and view the IP address of the host for which the alarm is generated.
  2. Log in to the host where the alarm is generated as user root.
  3. Run the su - omm command to switch to user omm.
  4. Run the vi $BIGDATA_LOG_HOME/omm/oms/ha/scriptlog/tomcat.log command to check whether the Tomcat resource log contains the keyword "Cannot find XXX" and rectify the file permission based on the keyword.
  1. 5 minutes later, check whether the alarm is cleared.

    • If it is, no further action is required.
    • If it is not, go to 6.

Collect fault information.

  1. On FusionInsight Manager, choose O&M > Log > Download.
  2. Select OmmServer and Tomcat for Service and click OK.
  3. Click in the upper right corner, and set Start Date and End Date for log collection to 10 minutes ahead of and after the alarm generation time, respectively. Then, click Download.
  4. Contact the O&M personnel and send the collected log information.

Alarm Clearing

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

Related Information

None