tidb version
v3.0.1
问题描叙:
①.应用侧:
Communications link failure
②.db侧tidb server的日志tidb.log
[root@TIDB004 log]# grep “Welcome to TiDB” tidb.log
[2020/07/19 21:31:10.048 +08:00] [INFO] [printer.go:41] [“Welcome to TiDB.”] [“Release Version”=v3.0.1] [“Git Commit Hash”=9e4e8da3c58c65123db5f26409759fe1847529f8] [“Git Branch”=HEAD] [“UTC Build Time”=“2019-07-16 01:03:40”] [GoVersion=“go version go1.12 linux/amd64”] [“Race Enabled”=false] [“Check Table Before Drop”=false] [“TiKVMin Version”=2.1.0-alpha.1-ff3dd160846b7d1aed9079c389fc188f7f5ea13e]
[2020/07/19 21:39:18.548 +08:00] [INFO] [printer.go:41] [“Welcome to TiDB.”] [“Release Version”=v3.0.1] [“Git Commit Hash”=9e4e8da3c58c65123db5f26409759fe1847529f8] [“Git Branch”=HEAD] [“UTC Build Time”=“2019-07-16 01:03:40”] [GoVersion=“go version go1.12 linux/amd64”] [“Race Enabled”=false] [“Check Table Before Drop”=false] [“TiKVMin Version”=2.1.0-alpha.1-ff3dd160846b7d1aed9079c389fc188f7f5ea13e]
[2020/07/19 22:25:43.549 +08:00] [INFO] [printer.go:41] [“Welcome to TiDB.”] [“Release Version”=v3.0.1] [“Git Commit Hash”=9e4e8da3c58c65123db5f26409759fe1847529f8] [“Git Branch”=HEAD] [“UTC Build Time”=“2019-07-16 01:03:40”] [GoVersion=“go version go1.12 linux/amd64”] [“Race Enabled”=false] [“Check Table Before Drop”=false] [“TiKVMin Version”=2.1.0-alpha.1-ff3dd160846b7d1aed9079c389fc188f7f5ea13e]
[2020/07/19 22:52:31.048 +08:00] [INFO] [printer.go:41] [“Welcome to TiDB.”] [“Release Version”=v3.0.1] [“Git Commit Hash”=9e4e8da3c58c65123db5f26409759fe1847529f8] [“Git Branch”=HEAD] [“UTC Build Time”=“2019-07-16 01:03:40”] [GoVersion=“go version go1.12 linux/amd64”] [“Race Enabled”=false] [“Check Table Before Drop”=false] [“TiKVMin Version”=2.1.0-alpha.1-ff3dd160846b7d1aed9079c389fc188f7f5ea13e]
[2020/07/19 23:23:16.298 +08:00] [INFO] [printer.go:41] [“Welcome to TiDB.”] [“Release Version”=v3.0.1] [“Git Commit Hash”=9e4e8da3c58c65123db5f26409759fe1847529f8] [“Git Branch”=HEAD] [“UTC Build Time”=“2019-07-16 01:03:40”] [GoVersion=“go version go1.12 linux/amd64”] [“Race Enabled”=false] [“Check Table Before Drop”=false] [“TiKVMin Version”=2.1.0-alpha.1-ff3dd160846b7d1aed9079c389fc188f7f5ea13e]
重启日志前后没有明显的报错信息,但有很多写冲突和重试,日志中未发现oom(dmesg -T | grep tidb-server)和panic(grep -i panic tidb.log)
db的服务器的uptime正常
systemd的日志中发现有异常