Add dial duration to debug error message

This should give us more detail on how long dials take before failing, so that we can perhaps better tune the retry loop in the future.

Signed-off-by: Brad Davidson <brad.davidson@rancher.com>

pkg/agent/loadbalancer/loadbalancer.go

@@ -8,6 +8,7 @@ import (
 	"os"
 	"path/filepath"
 	"sync"
+	"time"
 
 	"github.com/k3s-io/k3s/pkg/version"
 	"github.com/sirupsen/logrus"
@@ -167,11 +168,12 @@ func (lb *LoadBalancer) dialContext(ctx context.Context, network, _ string) (net
 		if server == nil || targetServer == "" {
 			logrus.Debugf("Nil server for load balancer %s: %s", lb.serviceName, targetServer)
 		} else if allChecksFailed || server.healthCheck() {
+			dialTime := time.Now()
 			conn, err := server.dialContext(ctx, network, targetServer)
 			if err == nil {
 				return conn, nil
 			}
-			logrus.Debugf("Dial error from load balancer %s: %s", lb.serviceName, err)
+			logrus.Debugf("Dial error from load balancer %s after %s: %s", lb.serviceName, time.Now().Sub(dialTime), err)
 			// Don't close connections to the failed server if we're retrying with health checks ignored.
 			// We don't want to disrupt active connections if it is unlikely they will have anywhere to go.
 			if !allChecksFailed {