ALM-12018 Memory Usage Exceeds the Threshold

Alarm Description

The system checks the memory usage of the system 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 value of the memory usage exceeds the threshold.

When the Trigger Count is 1, this alarm is cleared when the host memory usage is less than or equal to the threshold. When the Trigger Count is greater than 1, this alarm is cleared when the host memory usage is less than or equal to 90% of the threshold.

Alarm Attributes

Alarm ID	Alarm Severity	Alarm Type	Service Type	Auto Cleared
12018	Critical (default threshold: 95%) Major (default threshold: 90%)	Physical resource	FusionInsight Manager	Yes

Alarm ID

Alarm Severity

Alarm Type

Service Type

Auto Cleared

12018

Critical (default threshold: 95%)

Major (default threshold: 90%)

Physical resource

FusionInsight Manager

Yes

Alarm Parameters

Type	Parameter	Description
Location Information	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.
Additional Information	Trigger Condition	Specifies the triggering condition for which the alarm is generated.

Impact on the System

Latency: If the host memory usage is too high, service processes may run slowly and services may be delayed.
Service failure: If the host memory usage is too high, memory overflow may occur in service processes and jobs may fail.

Possible Causes

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

Handling Procedure

Expand the system.

In the alarm list on FusionInsight Manager, click in the row where the alarm is located to view the alarm host address in the alarm details.
Log in to the host where the alarm is generated as user root.
If the memory usage exceeds the threshold, perform memory capacity expansion.
Run the command free -m | grep Mem\: | awk '{printf("%s,", $3 * 100 / $2)}' to check the system memory usage.
Wait for 5 minutes, check whether the alarm is cleared.
- If yes, no further action is required.
- If no, go to 6.

Collect fault information.

On the FusionInsight Manager in the active cluster, choose O&M > Log > Download.
Select OmmServer from the Service and click OK.
Click the edit button 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.
Contact the O&M engineers and send the collected log information.