cosmetic: some error logging message tweaks

plugin/net/driver.go

@@ -113,7 +113,7 @@ func (driver *driver) JoinEndpoint(j *api.JoinRequest) (*api.JoinResponse, error
 	}
 
 	if err := netlink.LinkSetUp(local); err != nil {
-		return nil, errorf(`unable to bring veth up: %s`, err)
+		return nil, errorf(`unable to bring up veth: %s`, err)
 	}
 
 	ifname := &api.InterfaceName{
@@ -171,7 +171,7 @@ func createAndAttach(id, bridgeName string, mtu int) (*netlink.Veth, error) {
 			return nil, errorf(`failed to attach "%s" to device "%s": %s`, local.Name, bridgeName, err)
 		}
 	default:
-		return nil, errorf(`device "%s" not a bridge`, bridgeName)
+		return nil, errorf(`device "%s" is not a bridge`, bridgeName)
 	}
 	return local, nil
 }

plugin/net/watcher.go

@@ -27,10 +27,10 @@ func NewWatcher(client *docker.Client, weave *weaveapi.Client, driver *driver) (
 }
 
 func (w *watcher) ContainerStarted(id string) {
-	Log.Debugf("Container started %s", id)
+	Log.Debugf("Container %s started", id)
 	info, err := w.client.InspectContainer(id)
 	if err != nil {
-		Log.Warningf("error inspecting container: %s", err)
+		Log.Warningf("error inspecting container %s: %s", id, err)
 		return
 	}
 	// check that it's on our network, via the endpointID
@@ -38,7 +38,7 @@ func (w *watcher) ContainerStarted(id string) {
 		if w.driver.HasEndpoint(net.EndpointID) {
 			fqdn := fmt.Sprintf("%s.%s", info.Config.Hostname, info.Config.Domainname)
 			if err := w.weave.RegisterWithDNS(id, fqdn, net.IPAddress); err != nil {
-				Log.Warningf("unable to register with weaveDNS: %s", err)
+				Log.Warningf("unable to register %s with weaveDNS: %s", id, err)
 			}
 		}
 	}