Help Center/ MapReduce Service/ User Guide/ MRS Cluster O&M/ MRS Cluster Alarm Handling Reference/ ALM-12069 AOS Resource Exception
Updated on 2024-11-13 GMT+08:00
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ALM-12069 AOS Resource Exception

Alarm Description

HA checks the AOS resources of Manager every 81 seconds. This alarm is generated when HA detects that the AOS resources are abnormal for two consecutive times.

This alarm is cleared when HA detects that the AOS resources become normal.

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

In MRS 3.3.1 and later versions, the alarm name is changed from "AOS Resource Exception" to "Abnormal AOS Resources of Manager".

Alarm Attributes

Alarm ID

Alarm Severity

Auto Cleared

12069

Major

Yes

Alarm Parameters

Parameter

Description

Source

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

ServiceName

Specifies the service for which the alarm was generated.

RoleName

Specifies the role for which the alarm was generated.

HostName

Specifies the host for which the alarm was generated.

Impact on the System

An active/standby Manager switchover may occur. Tenant and role management cannot be provided for AOS upper-layer applications. As a result, you may fail to log in to Manager and component web UIs.

Possible Causes

The AOS process is abnormal.

Handling Procedure

Check whether the AOS process is normal.

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

    • If yes, go to 6.
    • If no, go to 4.

  4. Run the vi $BIGDATA_LOG_HOME/omm/oms/ha/scriptlog/aos.log command to check whether the AOS resource log of HA contains the keyword ERROR. If yes, analyze the logs to locate the resource exception cause and fix the exception.
  5. After 5 minutes, check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 6.

Collect fault information.

  1. On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
  2. In the Services area, select Controller and OmmServer, and click OK.
  3. Click in the upper right corner, and set Start Date and End Date for log collection to 1 hour ahead of and after the alarm generation time, respectively. Then, click Download.
  4. Contact O&M personnel and provide the collected logs.

Alarm Clearance

This alarm is automatically cleared after the fault is rectified.

Related Information

None