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 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 Parameters

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.

1. Log in to FusionInsight Manager. In the alarm list, locate the alarm and click to view the alarm host address.
2. Log in to the host for which the alarm is generated as user root.
3. If the memory usage exceeds the preset threshold, increase the memory of the cluster.
4. Check the system memory usage:

   free -m | grep Mem\: | awk '{printf("%s,", $3 * 100 / $2)}'

5. Wait for 5 minutes, check whether the alarm is cleared.
   • If yes, no further action is required.
   • If no, go to Step 6.

Collect fault information.

6. On the FusionInsight Manager in the active cluster, choose O&M > Log > Download.
7. Select OmmServer from the Service and click OK.
8. 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.
9. Contact the O&M personnel and send the collected log information.

Alarm Clearance

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

Related Information

None