Help Center > > User Guide> FusionInsight Manager Operation Guide> Alarm Reference (Applicable to MRS 3.x)> ALM-45426 ClickHouse Service Quantity Quota Usage in ZooKeeper Exceeds the Threshold

ALM-45426 ClickHouse Service Quantity Quota Usage in ZooKeeper Exceeds the Threshold

Updated at: Mar 25, 2021 GMT+08:00

Description

The alarm module checks the quota usage of the ClickHouse service in the ZooKeeper every 60 seconds. This alarm is generated when the alarm module detects that the usage exceeds the threshold (90%).

This alarm is cleared when the system detects that the usage is lower than the threshold and the alarm is cleared.

Attribute

Alarm ID

Alarm Severity

Automatically Cleared

45426

Major

Yes

Parameters

Name

Meaning

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.

Impact on the System

After the ZooKeeper quantity quota of the ClickHouse service exceeds the threshold, you cannot perform cluster operations on the ClickHouse service on FusionInsight Manager. As a result, the ClickHouse service cannot be used.

Possible Causes

The number of ClickHouse nodes created in ZooKeeper exceeds the threshold.

Procedure

Check the number of ClickHouse nodes created in ZooKeeper.

  1. On FusionInsight Manager, choose O&M > Alarm > Alarms. In the alarm list, check whether the alarm "ALM-45246 ClickHouse Service Quantity Quota Usage in ZooKeeper Exceeds the Threshold" exists.

    • If yes, go to 2.
    • If no, no further action is required.

  2. On FusionInsight Manager, choose Cluster > Services > ClickHouse > Configurations. On the Configuration page, increase the value of clickhouse.zookeeper.quota.node.count. Restart the ClickHouse service, and check whether the alarm is cleared.

    • If yes, no further action is required.
    • If no, go to 3.

Collect the fault information.

  1. On FusionInsight Manager, choose O&M > Log > Download.
  2. Expand the Service drop-down list, and select ClickHouse for the target cluster.
  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 Clearing

After the fault that triggers the alarm is rectified, the alarm is automatically cleared.

Related Information

None

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