[2023/07/31 14:05:45.699 +08:00] [ERROR] [main.go:674] ["open Db failed"] ["take time"=30.066849144s] [error="dial tcp [::1]:35611: connect: connection refused"]

[2023/07/31 14:05:45.700 +08:00] [FATAL] [main.go:694] ["open DB failed"] [error="dial tcp [::1]:35611: connect: connection refused"] [errorVerbose="dial tcp [::1]:35611: connect: connection refused\ngithub.com/pingcap/errors.AddStack\n\t/go/pkg/mod/github.com/pingcap/errors@v0.11.5-0.20221009092201-b66cddb77c32/errors.go:174\ngithub.com/pingcap/errors.Trace\n\t/go/pkg/mod/github.com/pingcap/errors@v0.11.5-0.20221009092201-b66cddb77c32/juju_adaptor.go:15\nmain.openDBWithRetry\n\t/home/jenkins/agent/workspace/pingcap/tidb/ghpr_check/tidb/cmd/explaintest/main.go:675\nmain.main\n\t/home/jenkins/agent/workspace/pingcap/tidb/ghpr_check/tidb/cmd/explaintest/main.go:689\nruntime.main\n\t/usr/local/go/src/runtime/proc.go:250\nruntime.goexit\n\t/usr/local/go/src/runtime/asm_amd64.s:1598"] [stack="main.main\n\t/home/jenkins/agent/workspace/pingcap/tidb/ghpr_check/tidb/cmd/explaintest/main.go:694\nruntime.main\n\t/usr/local/go/src/runtime/proc.go:250"]