ALM-45438 ClickHouse Disk Usage Exceeds 80%

Alarm Description

The system checks the disk capacity of the ClickHouseServer node every 1 minute. This alarm is generated when the usage of the disk where the ClickHouse data directory or metadata directory resides exceeds 80%.

This alarm is automatically cleared when the usage of the disk where the ClickHouse data directory or metadata directory is located is lower than 80%.

Alarm Attributes

Alarm Parameters

Impact on the System

The ClickHouse write operation may fail.

Possible Causes

The disk capacity of the ClickHouseServer node is too small.

Handling Procedure

1. Log in to FusionInsight Manager, choose O&M > Alarm > Alarms, and view the role name and the IP address for the hostname in Location.
2. Expand the disk capacity of the node for which the alarm is generated.
3. Go to 4 if the expansion fails or the alarm persists after the expansion.

Collect fault information.

4. On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
5. Expand the Service drop-down list, and select ClickHouse for the target cluster.
6. Expand the Hosts drop-down list. In the Select Host dialog box that is displayed, select the abnormal host, and click OK.
7. Click the edit icon 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.
8. Contact O&M personnel and provide the collected logs.

Alarm Clearance

This alarm is automatically cleared after the fault is rectified.

Related Information

None.