[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version] v8.1.0
[Reproduction Path] Installed according to the official website
[Encountered Issues: Problem Phenomenon and Impact] Constantly reporting 3930 timeout, but the firewall is actually turned off and all ports are open
[Resource Configuration] Go to TiDB Dashboard - Cluster Info - Hosts and take a screenshot of this page
[Attachments: Screenshots/Logs/Monitoring]
The error seems to be related to network or file permissions.
Specific situations require specific analysis.
Let me share the situation I encountered yesterday. When deploying ticdc + kafka, all ports between the servers were open, and the firewall was also turned off. There was no problem with the telnet port…
Later, I added the IP and hostname of each server in /etc/hosts. After handling it this way, there were no more errors. I don’t know if this solution is applicable to your situation.
Please check the instance’s log (/tidb-deploy/tiflash-9000/log) for more details.
Is there more detailed information in this log file?
The network whitelist should still be added, including trusted ones.
There is no port occupation, I have checked it all the time, but it just can’t start. I have installed it five or six times. Can I use it directly without installing TiFlash?
The import tool DM reports an error here: “level=error msg=‘unable to initialize gossip mesh’ err=‘create memberlist: Could not set up network transport: failed to obtain an address: Failed to start TCP listener on ‘65.2.82.176’ port 9094: listen tcp ip:9094: bind: cannot assign requested address’”. These two ports are not occupied, but it just won’t start.