Add config for dynamic params

dcron/config.go

@@ -2,20 +2,30 @@ package dcron
 
 import (
 	"fmt"
+	"os"
+
 	"github.com/spf13/viper"
 )
 
 var config *viper.Viper
 
 func init() {
+	hostname, err := os.Hostname()
+	if err != nil {
+		panic(err)
+	}
 	config = viper.New()
 
 	config.SetDefault("rpc_addr", "127.0.0.1:7373")
 	config.SetDefault("discover", "dcron")
+	config.SetDefault("node_name", hostname)
+	config.SetDefault("node", config.GetString("node_name"))
+	config.SetDefault("bind", "0.0.0.0:7946")
+	config.SetDefault("http_addr", ":8080")
 
 	config.SetConfigName("dcron")    // name of config file (without extension)
 	config.AddConfigPath("./config") // call multiple times to add many search paths
-	err := config.ReadInConfig()     // Find and read the config file
+	err = config.ReadInConfig()      // Find and read the config file
 	if err != nil {                  // Handle errors reading the config file
 		panic(fmt.Errorf("Fatal error config file: %s \n", err))
 	}

dcron/serf.go

@@ -22,7 +22,11 @@ func (sm *serfManager) Start() {
 	if config.GetString("discover") != "" {
 		discover = " -discover=" + config.GetString("discover")
 	}
-	serfArgs := []string{discover, "-rpc-addr=" + config.GetString("rpc_addr"), "-config-file=config/dcron.json"}
+	bind := "-bind= " + config.GetString("bind")
+	rpc_addr := "-rpc-addr=" + config.GetString("rpc_addr")
+	node := "-node=" + config.GetString("node")
+
+	serfArgs := []string{discover, node, rpc_addr, bind, "-config-file=config/dcron.json"}
 	agent, err := spawnProc("./bin/serf agent" + strings.Join(serfArgs, " "))
 	if err != nil {
 		log.Error(err)