Display config on operator start up

cmd/main.go

@@ -60,7 +60,7 @@ func ControllerConfig() *controller.Config {
 func main() {
 	log.SetOutput(os.Stdout)
 	log.Printf("Spilo operator %s\n", version)
-	log.Printf("ServiceAccountName: %s\n", cfg.ServiceAccountName)
+	log.Printf("Config: %s", cfg.MustMarshal())
 
 	sigs := make(chan os.Signal, 1)
 	stop := make(chan struct{})

pkg/util/config/config.go

@@ -3,6 +3,7 @@ package config
 import (
 	"fmt"
 	"time"
+	"encoding/json"
 
 	"github.com/kelseyhightower/envconfig"
 )
@@ -49,3 +50,12 @@ func LoadFromEnv() *Config {
 
 	return &cfg
 }
+
+func (c Config) MustMarshal() string {
+	b, err := json.MarshalIndent(c, "", "\t")
+	if err != nil {
+		panic(err)
+	}
+
+	return string(b)
+}