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cmd/ctrld: prefix log with listener number when update listener config

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This commit is contained in:
Cuong Manh Le
2023-07-14 00:18:33 +00:00
committed by Cuong Manh Le
parent e65a71b2ae
commit 28df551195
1 changed files with 18 additions and 11 deletions
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29
cmd/ctrld/cli.go
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@@ -1238,6 +1238,12 @@ func updateListenerConfig() {
return udpErr == nil && tcpErr == nil
}
logMsg := func(e *zerolog.Event, listenerNum int, format string, v ...any) {
e.MsgFunc(func() string {
return fmt.Sprintf("listener.%d %s", listenerNum, fmt.Sprintf(format, v...))
})
}
listeners := make([]int, 0, len(cfg.Listener))
for k := range cfg.Listener {
n, err := strconv.Atoi(k)
@@ -1275,14 +1281,14 @@ func updateListenerConfig() {
maxAttempts := 10
for {
if attempts == maxAttempts {
mainLog.Fatal().Msg("could not find available listen ip and port")
logMsg(mainLog.Fatal(), n, "could not find available listen ip and port")
}
addr := net.JoinHostPort(listener.IP, strconv.Itoa(listener.Port))
if listenOk(addr) {
break
}
if !check.IP && !check.Port {
mainLog.Fatal().Msgf("failed to listen on: %s", addr)
logMsg(mainLog.Fatal(), n, "failed to listen on: %s", addr)
}
if tryAllPort53 {
tryAllPort53 = false
@@ -1293,7 +1299,7 @@ func updateListenerConfig() {
listener.Port = 53
}
if check.IP {
mainLog.Warn().Msgf("could not listen on address: %s, trying: %s", addr, net.JoinHostPort(listener.IP, strconv.Itoa(listener.Port)))
logMsg(mainLog.Warn(), n, "could not listen on address: %s, trying: %s", addr, net.JoinHostPort(listener.IP, strconv.Itoa(listener.Port)))
}
continue
}
@@ -1306,7 +1312,7 @@ func updateListenerConfig() {
listener.Port = 53
}
if check.IP {
mainLog.Warn().Msgf("could not listen on address: %s, trying localhost: %s", addr, net.JoinHostPort(listener.IP, strconv.Itoa(listener.Port)))
logMsg(mainLog.Warn(), n, "could not listen on address: %s, trying localhost: %s", addr, net.JoinHostPort(listener.IP, strconv.Itoa(listener.Port)))
}
continue
}
@@ -1318,7 +1324,7 @@ func updateListenerConfig() {
if check.Port {
listener.Port = 5354
}
mainLog.Warn().Msgf("could not listen on address: %s, trying current ip with port 5354", addr)
logMsg(mainLog.Warn(), n, "could not listen on address: %s, trying current ip with port 5354", addr)
continue
}
if tryPort5354 {
@@ -1329,7 +1335,7 @@ func updateListenerConfig() {
if check.Port {
listener.Port = 5354
}
mainLog.Warn().Msgf("could not listen on address: %s, trying 0.0.0.0:5354", addr)
logMsg(mainLog.Warn(), n, "could not listen on address: %s, trying 0.0.0.0:5354", addr)
continue
}
if check.IP && !isZeroIP { // for "0.0.0.0" or "::", we only need to try new port.
@@ -1343,9 +1349,9 @@ func updateListenerConfig() {
listener.Port = oldPort
}
if listener.IP == oldIP && listener.Port == oldPort {
mainLog.Fatal().Msgf("could not listener on: %s", net.JoinHostPort(listener.IP, strconv.Itoa(listener.Port)))
logMsg(mainLog.Fatal(), n, "could not listener on: %s", net.JoinHostPort(listener.IP, strconv.Itoa(listener.Port)))
}
mainLog.Warn().Msgf("could not listen on address: %s, pick a random ip+port", addr)
logMsg(mainLog.Warn(), n, "could not listen on address: %s, pick a random ip+port", addr)
attempts++
}
}
@@ -1353,11 +1359,12 @@ func updateListenerConfig() {
// Specific case for systemd-resolved.
if useSystemdResolved {
if listener := cfg.FirstListener(); listener != nil && listener.Port == 53 {
n := listeners[0]
// systemd-resolved does not allow forwarding DNS queries from 127.0.0.53 to loopback
// ip address, other than "127.0.0.1", so trying to listen on default route interface
// address instead.
if ip := net.ParseIP(listener.IP); ip != nil && ip.IsLoopback() && ip.String() != "127.0.0.1" {
mainLog.Warn().Msg("using loopback interface do not work with systemd-resolved")
logMsg(mainLog.Warn(), n, "using loopback interface do not work with systemd-resolved")
found := false
if netIface, _ := net.InterfaceByName(defaultIfaceName()); netIface != nil {
addrs, _ := netIface.Addrs()
@@ -1367,14 +1374,14 @@ func updateListenerConfig() {
if listenOk(addr) {
found = true
listener.IP = netIP.IP.String()
mainLog.Warn().Msgf("use %s as listener address", listener.IP)
logMsg(mainLog.Warn(), n, "use %s as listener address", listener.IP)
break
}
}
}
}
if !found {
mainLog.Fatal().Msgf("could not use %q as DNS nameserver with systemd resolved", listener.IP)
logMsg(mainLog.Fatal(), n, "could not use %q as DNS nameserver with systemd resolved", listener.IP)
}
}
}