ALM-12018 Memory Usage Exceeds the Threshold (For MRS 2.x or Earlier)

Description

The system checks the memory usage every 30 seconds and compares the actual memory usage with the threshold. The memory usage has a default threshold. This alarm is generated when the detected memory usage exceeds the threshold.

This alarm is cleared when the host memory usage is less than or equal to 90% of the threshold.

Attribute

Alarm ID	Alarm Severity	Auto Clear
12018	Major	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.
Trigger Condition	Generates an alarm when the actual indicator value exceeds the specified threshold.

Impact on the System

Processes respond slowly or do not work.

Possible Causes

Memory configuration cannot meet service requirements. The memory usage reaches the upper threshold.

Procedure

Expand the system.
1. Go to the MRS cluster details page. In the alarm list on the alarm management tab page, click the row that contains the alarm. In the alarm details, view the host address of the alarm.
2. Log in to the node for which the alarm is generated.
3. Run free -m | grep Mem\: | awk '{printf("%s,", ($3-$6-$7) * 100 / $2)}' to check the system memory usage.
4. If the memory usage exceeds the threshold, expand the memory capacity.
5. Wait 5 minutes and check whether the alarm is cleared.
  - If yes, no further action is required.
  - If no, go to 2.
Collect fault information.
1. On MRS Manager, choose System > Export Log.
2. Contact the O&M engineers and send the collected logs.