optimize log and fix typo (#311)

Signed-off-by: Jim Ma <majinjing3@gmail.com>

client/daemon/peer/peertask_base.go

@@ -210,9 +210,11 @@ loop:
 			if de, ok := err.(*dferrors.DfError); ok {
 				pt.failedCode = de.Code
 				pt.failedReason = de.Message
+				pt.Errorf("receive peer packet failed: %s", pt.failedReason)
+			} else {
+				pt.Errorf("receive peer packet failed: %s", err)
 			}
 			pt.cancel()
-			pt.Errorf(pt.failedReason)
 			if !firstSpanDone {
 				firstPeerSpan.RecordError(err)
 			}

cmd/scheduler/cmd/root.go

@@ -83,6 +83,7 @@ func runScheduler() error {
 
 	svr, err := server.New(cfg)
 	if err != nil {
+		logger.Errorf("get scheduler server error: %s", err)
 		return err
 	}
 

pkg/rpc/scheduler/client/client.go

@@ -40,7 +40,7 @@ import (
 
 func GetClientByAddr(addrs []dfnet.NetAddr, opts ...grpc.DialOption) (SchedulerClient, error) {
 	if len(addrs) == 0 {
-		return nil, errors.New("address list of cdn is empty")
+		return nil, errors.New("address list of scheduler is empty")
 	}
 	sc := &schedulerClient{
 		rpc.NewConnection(context.Background(), "scheduler-static", addrs, []rpc.ConnOption{