ALM-45430 Permission Metadata Synchronization Failed on the Added ClickHouse Node

Description

This alarm is generated when user and permission information fails to be synchronized during ClickHouse capacity expansion.

Attribute

Parameters

Impact on the System

The created user does not have operation permissions on the node.

Possible Causes

A node is stopped or faulty during capacity expansion.

Procedure

1. On MRS Manager, choose Cluster > Services > ClickHouse > Instance.
2. Check whether an instance is stopped, decommissioned, or faulty.
   • If yes, go to 3.
   • If no, go to 4.

3. Start the instance or rectify the instance fault until all instances are running properly.
4. On MRS Manager, choose O&M > Alarm > Alarms, locate this alarm and the faulty host based on the location information.

5. Log in to the faulty host as user omm.
6. Run the following commands to initialize environment variables:

   source Cluster installation directory/FusionInsight_ClickHouse_*/*_*_ClickHouseServer/etc/ENV_VARS

   source Cluster installation directory/FusionInsight_ClickHouse_*/*_*_ClickHouseServer/etc/clickhouse-env.sh

   export CLICKHOUSE_CONF_DIR=${CLICKHOUSE_CONF_DIR}

7. Run the following command to run the metadata synchronization tool to synchronize metadata from the existing node to the faulty node:

   sh Cluster installation directory/FusionInsight_ClickHouse_*/install/FusionInsight-ClickHouse-*/clickhouse/sbin/clickhouse-create-meta.sh true

8. Run the following command to view the log information and check whether the metadata has been synchronized:

   vim /var/log/Bigdata/clickhouse/clickhouseServer/start.log

   If the synchronization is complete, go to 9.

   If the synchronization fails, go to 10.

9. On MRS Manager, choose O&M > Alarm > Alarms. In the Alarm ID column, locate the corresponding alarm and click Clear in the Operation column. In the displayed dialog box, click OK to manually clear the alarm.

Collect the fault information.

10. On MRS Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
11. Expand the Service drop-down list, select ClickHouse for the target cluster, and click OK.
12. Choose the corresponding host form the host list.
13. Click in the upper right corner, and set Start Date and End Date for log collection to 30 minutes ahead of and after the alarm generation time respectively. Then, click Download.
14. Contact O&M personnel and provide the collected logs.

Alarm Clearing

This alarm needs to be manually cleared after the fault is rectified.

Related Information

None