A large number of [terror.go:307] ["encountered error"] [error=EOF] appeared in TiDB logs

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Original topic: tidb日志上出现大量[terror.go:307] [“encountered error”] [error=EOF]

| username: TiDBer_Y2d2kiJh

[TiDB Usage Environment] Production Environment / Testing / PoC
[TiDB Version] v5.4.0 2tidb 3pd 3tikv 2haproxy 1keepalived
[Reproduction Path] The TiDB log shows [terror.go:307] [“encountered error”] [error=EOF] every minute, as shown in the figure:
[Encountered Problem: Problem Phenomenon and Impact]
[Resource Configuration] Enter TiDB Dashboard - Cluster Info - Hosts and take a screenshot of this page
[Attachment: Screenshot/Log/Monitoring]

| username: redgame | Original post link

This is the only error. Check if the network connection is normal, including examining the network connectivity between servers, firewall settings, and network configuration.

| username: Kongdom | Original post link

Looking at the INFO log, it seems that the error is caused by a timeout.

| username: tidb菜鸟一只 | Original post link

error=EOF, mostly caused by network issues.

| username: system | Original post link

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