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

Updated on 2024-09-23 GMT+08:00

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NOTE:

This section applies only to MRS 3.1.2 or later.

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

Alarm ID	Alarm Severity	Auto Cleared
45430	Major	No

Parameter	Description
Source	Specifies the cluster for which the alarm was generated.
ServiceName	Specifies the service for which the alarm was generated.
RoleName	Specifies the role for which the alarm was generated.
HostName	Specifies the host for which the alarm was generated.

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

A node is stopped or faulty during capacity expansion.

On FusionInsight Manager, choose Cluster > Services > ClickHouse > Instance.
Check whether an instance is stopped, decommissioned, or faulty.
- If yes, go to 3.
- If no, go to 4.
Start the instance or rectify the instance fault until all instances are running properly.
On FusionInsight Manager, choose O&M > Alarm > Alarms, locate this alarm and the faulty host based on the location information.

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

source ${BIGDATA_HOME}/FusionInsight_ClickHouse_*/*_*_ClickHouseServer/etc/ENV_VARS

source ${BIGDATA_HOME}/FusionInsight_ClickHouse_*/*_*_ClickHouseServer/etc/clickhouse-env.sh

export CLICKHOUSE_CONF_DIR=${CLICKHOUSE_CONF_DIR}
Run the following command to run the metadata synchronization tool to synchronize metadata from the existing node to the faulty node:

sh ${BIGDATA_HOME}/FusionInsight_ClickHouse_*/install/FusionInsight-ClickHouse-*/clickhouse/sbin/clickhouse-create-meta.sh true
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.
On FusionInsight 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.

On FusionInsight Manager, choose O&M. In the navigation pane on the left, choose Log > Download.
Expand the Service drop-down list, select ClickHouse for the target cluster, and click OK.
Choose the corresponding host form the host list.
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.
Contact O&M personnel and provide the collected logs.