The newly expanded CDC component of the TiDB cluster does not appear in the Services Port Status under Overview

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

Original topic: tidb集群新扩容的cdc组件在Overview的Services Port Status中没有显示出来

| username: Ti青涩

[Test Environment for TiDB]
[TiDB Version] v6.1.6
[Reproduction Path] After expanding the TiDB cluster with the CDC component, I found that there is no CDC component information in the Services Port Status on the monitoring panel.
Without further ado, here are the images:
CDC component status:


Services Port Status display:

*** Key Point ***
I followed the steps in grafana 的监控指标是如何统计出来的 - TiDB 的问答社区, but there was no change, and the CDC component is still missing.

Seeking help…

| username: Ti青涩 | Original post link

Does CDC not support displaying in Services Port Status?

| username: zhanggame1 | Original post link

Have you read it?

| username: porpoiselxj | Original post link

The CDC machine does not support display.

| username: 像风一样的男子 | Original post link

My understanding is that this Grafana is an open-source monitoring tool. You can edit this lab yourself and add CDC monitoring.


| username: onlyacat | Original post link

The official JSON does not include it.

Please raise an issue to add it.

| username: 这里介绍不了我 | Original post link

The CDC dashboard is not in the Overview. You can check it in the cluster name - TiCDC dashboard.

| username: 这里介绍不了我 | Original post link

The default value of tidb_distsql_scan_concurrency is 15, which means that each SQL query will use 15 threads to scan data. If the number of concurrent queries is high, it may cause a large number of threads to be created, leading to high CPU usage. You can try reducing the value of tidb_distsql_scan_concurrency to reduce the number of threads created by each query.

| username: Ti青涩 | Original post link

The cluster name - TiCDC is available.

| username: 这里介绍不了我 | Original post link

What information do you need to check about CDC?

| username: Ti青涩 | Original post link

In the first image, I tried but couldn’t retrieve the data from TiCDC. Where is the second image from?

| username: 像风一样的男子 | Original post link

This monitoring item uses groups to count each node in the Endpoint. I found that there is indeed no CDC statistics.
http://promethues:9090/targets

| username: 小于同学 | Original post link

Does CDC not support displaying in Services Port Status?

| username: TiDBer_QYr0vohO | Original post link

There isn’t one in the official dashboard’s JSON, so just add one yourself.

| username: zhaokede | Original post link

Next, add some configurations in the test environment and take a look.

| username: system | Original post link

This topic was automatically closed 60 days after the last reply. New replies are no longer allowed.