Help Center/ MapReduce Service/ User Guide/ MRS Cluster O&M/ MRS Cluster Alarm Handling Reference/ ALM-12071 Httpd Resource Is Abnormal
Updated on 2024-09-23 GMT+08:00
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ALM-12071 Httpd Resource Is Abnormal

Description

HA checks the httpd resources of Manager every 120 seconds. This alarm is generated when HA detects that the httpd resources are abnormal for 10 consecutive times.

This alarm is cleared when the httpd resource is normal.

Resource Type of httpd is Single-active. Active/standby will be triggered upon resource exceptions. When this alarm is generated, the active/standby switchover is complete and new httpd 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

12071

Major

Yes

Parameters

Name

Meaning

Source

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

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

  • The alarm persists for a long time, causing frequent active/standby switchovers of FusionInsight Manager. As a result, users cannot log in to FusionInsight Manager and perform O&M operations.
  • The httpd process is repeatedly restarts, which may lead to the failure to visit the native service UI.

Possible Causes

The httpd process is abnormal.

Procedure

Check whether the httpd process is abnormal.

  1. In the alarm list on FusionInsight Manager, locate the row that contains the alarm, and view the name of the host for which the alarm is generated.
  2. Log in to the host for which the alarm is generated as user root.
  3. Run the su - omm command to switch to user omm.
  4. Run the sh ${BIGDATA_HOME}/om-server/OMS/workspace0/ha/module/hacom/script/status_ha.sh command to check whether the status of the httpd resources managed by the HA is normal. In the single-node system, the httpd resource is in the normal state. In the dual-node system, the httpd resource is in the normal state on the active node and in the stopped state on the standby node.

    • If it is, go to 7.
    • If it is not, go to 5.

  5. Run the vi $BIGDATA_LOG_HOME/omm/oms/ha/scriptlog/httpd.log command to view the httpd resource logs, check whether the keyword ERROR exists. Analyze the logs to locate and rectify the fault.
  6. Five minutes later, check whether this alarm is cleared.

    • If it is, no further action is required.
    • If it is not, go to 7.

Collect fault information.

  1. On FusionInsight Manager, choose O&M > Log > Download.
  2. Select Controller and OmmServer for Service and click OK.
  3. Click in the upper right corner. In the displayed dialog box, set Start Date and End Date to 1 hour before and after the alarm generation time respectively and click OK. Then, click Download.
  4. Contact the O&M personnel and send the collected log information.

Alarm Clearing

This alarm will be automatically cleared after the fault is rectified.

Related Information

None