[bug] listen endpoint panic but program still run

[zhyass]

The config json file:

"server": {
	"endpoint": "test-krypton-1.test-krypton.default:8801"
},

When the container start, get error logs:

2021/04/16 03:18:29.911339 trace.go:32:      [WARNING]  FOLLOWER[ID:test-krypton-1.test-krypton.default:8801, V:0, E:0].state.init
2021/04/16 03:18:29.913554 server.go:186:       [PANIC]    server.rpc.start.error[listen tcp: lookup test-krypton-1.test-krypton.default on 10.96.0.10:53: no such host
xbase/xrpc.(*Service).Start
    /go/src/github.com/radondb/xenon/src/xbase/xrpc/xrpc.go:54
server.(*Server).Start
    /go/src/github.com/radondb/xenon/src/server/server.go:185
main.main
    /go/src/github.com/radondb/xenon/src/xenon/xenon.go:79
runtime.main
    /usr/local/go/src/runtime/proc.go:203
runtime.goexit
    /usr/local/go/src/runtime/asm_amd64.s:1357]

According to normal logic, the program should exit at this time. Actually xenon still run because of the code recover() , but we cannot listen the endpoint.

[zhyass]

Currently we want to use the publishNotReadyAddresses parameter in kubernetes to be able to access pods even if the pod is not ready. From this kubernetes/kubernetes#92559 , even if this parameter is used, we may still need to wait 30s after pod creation. So we add retrys 30s for set the listener.

[andyli029]

Good job.