The necessary component `NgMonitoring` is not started in the cluster, some functions will be unavailable

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 集群中未启动必要组件 NgMonitoring,部分功能将不可用

| username: 艾维iii

The dashboard interface shows that the necessary component NgMonitoring in the cluster is not started, and some functions will be unavailable. Following the official documentation to restart the machine component with tiup cluster reload tidb-test --role prometheus did not solve the issue.

| username: TiDBer_jYQINSnf | Original post link

I have encountered this as well, but I usually ignore it.
This ngmonitor is mainly useful for debugging issues. I haven’t used it before.

| username: songxuecheng | Original post link

Try referring to this.

| username: 艾维iii | Original post link

I tried it, but it still doesn’t work.

| username: songxuecheng | Original post link

The error message indicates that the tidb-server process is not running. You can check the status of the tidb-server process by using the ps command to see if it is running. If it is not running, you can start it using the systemctl start tidb command.

| username: tidb菜鸟一只 | Original post link

Column - Step-by-Step Guide to Becoming a TiDB Contributor | TiDB Community
See if this is useful to you?

| username: dba远航 | Original post link

Check if there are any dependent parameters or functions that are not enabled for this component.

| username: 小龙虾爱大龙虾 | Original post link

This is not very useful, just top SQL and diagnostic information collection.

| username: wangccsy | Original post link

You can do without the NgMonitor feature, it doesn’t have much impact.

| username: TIDB-Learner | Original post link

Refer to the documentation

| username: 艾维iii | Original post link

After taking a break, it got better.

| username: system | Original post link

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