Merge pull request #201 from captainblue2013/patch-1

fix: 获取hostname的优先级逻辑

pkg/conf/env/env.go

@@ -5,6 +5,8 @@ package env
 import (
 	"flag"
 	"os"
+	"strconv"
+	"time"
 )
 
 // deploy env.
@@ -45,10 +47,13 @@ var (
 
 func init() {
 	var err error
-	if Hostname, err = os.Hostname(); err != nil || Hostname == "" {
 	Hostname = os.Getenv("HOSTNAME")
+	if Hostname == "" {
+		Hostname, err = os.Hostname()
+		if err != nil {
+			Hostname = strconv.Itoa(int(time.Now().UnixNano()))
+		}
 	}
-
 	addFlag(flag.CommandLine)
 }