ticdc: UT TestServerTLSWithCommonNameAndRotate is not stable

[hongyunyan]

What did you do?

run TestServerTLSWithCommonNameAndRotate

What did you expect to see?

pass successfully

What did you see instead?

Error: 3/13 08:03:47.889 +00:00] [ERROR] [server.go:298] ["http server error"] [error="[CDC:ErrServeHTTP]serve http error: mux: server closed"] [errorVerbose="[CDC:ErrServeHTTP]serve http error: mux: server closed\ngithub.com/pingcap/errors.AddStack\n\t/home/runner/go/pkg/mod/github.com/pingcap/errors@v0.11.5-0.20231212100244-799fae176cfb/errors.go:174\ngithub.com/pingcap/errors.(*Error).GenWithStackByArgs\n\t/home/runner/go/pkg/mod/github.com/pingcap/errors@v0.11.5-0.20231212100244-799fae176cfb/normalize.go:164\ngithub.com/pingcap/tiflow/pkg/errors.WrapError\n\t/home/runner/work/tiflow/tiflow/pkg/errors/helper.go:34\ngithub.com/pingcap/tiflow/cdc/server.(*server).startStatusHTTP.func1\n\t/home/runner/work/tiflow/tiflow/cdc/server/server.go:298\nruntime.goexit\n\t/opt/hostedtoolcache/go/1.21.7/x64/src/runtime/asm_amd64.s:1650"] [stack="github.com/pingcap/tiflow/cdc/server.(*server).startStatusHTTP.func1\n\t/home/runner/work/tiflow/tiflow/cdc/server/server.go:298"]
server_test.go:369:
Error Trace: /home/runner/work/tiflow/tiflow/cdc/server/server_test.go:369
Error: Received unexpected error:
context deadline exceeded
github.com/pingcap/errors.AddStack
/home/runner/go/pkg/mod/github.com/pingcap/errors@v0.11.5-0.20231212100244-799fae176cfb/errors.go:174
github.com/pingcap/errors.Trace
/home/runner/go/pkg/mod/github.com/pingcap/errors@v0.11.5-0.20231212100244-799fae176cfb/juju_adaptor.go:15
github.com/pingcap/tiflow/pkg/retry.run
/home/runner/work/tiflow/tiflow/pkg/retry/retry_with_opt.go:48
github.com/pingcap/tiflow/pkg/retry.Do
/home/runner/work/tiflow/tiflow/pkg/retry/retry_with_opt.go:34
github.com/pingcap/tiflow/cdc/server.TestServerTLSWithCommonNameAndRotate.func4
/home/runner/work/tiflow/tiflow/cdc/server/server_test.go:328
github.com/pingcap/tiflow/cdc/server.TestServerTLSWithCommonNameAndRotate
/home/runner/work/tiflow/tiflow/cdc/server/server_test.go:369
testing.tRunner
/opt/hostedtoolcache/go/1.21.7/x64/src/testing/testing.go:1595
runtime.goexit
/opt/hostedtoolcache/go/1.21.7/x64/src/runtime/asm_amd64.s:1650
Test: TestServerTLSWithCommonNameAndRotate

Versions of the cluster

Upstream TiDB cluster version (execute SELECT tidb_version(); in a MySQL client):

(paste TiDB cluster version here)

Upstream TiKV version (execute tikv-server --version):

(paste TiKV version here)

TiCDC version (execute cdc version):

(paste TiCDC version here)