add some logging

easy_config.go

@@ -4,6 +4,7 @@ import (
 	"crypto/tls"
 	"crypto/x509"
 	"errors"
+	"log"
 	"time"
 
 	etcd "github.com/coreos/etcd/clientv3"
@@ -17,8 +18,11 @@ type EasyConfig struct {
 }
 
 func (c EasyConfig) prepare() (etcd.Config, error) {
+	log.Println("enter prepare() for EasyConfig")
+	log.Printf("clientCert is '%s'", c.ClientCert)
 	cert, err := tls.X509KeyPair([]byte(c.ClientCert), []byte(c.ClientKey))
 	if err != nil {
+		log.Println("error building keypair")
 		return etcd.Config{}, err
 	}
 
@@ -40,12 +44,14 @@ func (c EasyConfig) prepare() (etcd.Config, error) {
 
 	conn, err := tls.Dial("tcp", c.Endpoints[0], tc)
 	if err != nil {
+		log.Printf("can't connect to %s:%s", c.Endpoints[0], err)
 		return etcd.Config{}, err
 	}
 	defer conn.Close()
 
 	err = conn.Handshake()
 	if err != nil {
+		log.Printf("failed tls handshake with %s:%s", c.Endpoints[0], err)
 		return etcd.Config{}, err
 	}