diff --git a/cmd/create/createNode.go b/cmd/create/createNode.go
index db1d77c3..1326de44 100644
--- a/cmd/create/createNode.go
+++ b/cmd/create/createNode.go
@@ -123,7 +123,7 @@ func parseCreateNodeCmd(cmd *cobra.Command, args []string) ([]*k3d.Node, *k3d.Cl
 			Role:  role,
 			Image: image,
 			Labels: map[string]string{
-				"k3d.role": roleStr,
+				k3d.LabelRole: roleStr,
 			},
 		}
 		nodes = append(nodes, node)
diff --git a/cmd/get/getNode.go b/cmd/get/getNode.go
index c254ac42..35db3bb3 100644
--- a/cmd/get/getNode.go
+++ b/cmd/get/getNode.go
@@ -118,6 +118,6 @@ func printNodes(nodes []*k3d.Node, headersOff bool) {
 	})
 
 	for _, node := range nodes {
-		fmt.Fprintf(tabwriter, "%s\t%s\t%s\n", strings.TrimPrefix(node.Name, "/"), string(node.Role), node.Labels["k3d.cluster"])
+		fmt.Fprintf(tabwriter, "%s\t%s\t%s\n", strings.TrimPrefix(node.Name, "/"), string(node.Role), node.Labels[k3d.LabelClusterName])
 	}
 }
diff --git a/pkg/cluster/cluster.go b/pkg/cluster/cluster.go
index 3b6634c7..c4f4bfbc 100644
--- a/pkg/cluster/cluster.go
+++ b/pkg/cluster/cluster.go
@@ -101,8 +101,8 @@ func CreateCluster(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Clus
 	 */
 	if !cluster.CreateClusterOpts.DisableImageVolume {
 		imageVolumeName := fmt.Sprintf("%s-%s-images", k3d.DefaultObjectNamePrefix, cluster.Name)
-		if err := runtime.CreateVolume(ctx, imageVolumeName, map[string]string{"k3d.cluster": cluster.Name}); err != nil {
-			log.Errorln("Failed to create image volume '%s' for cluster '%s'", imageVolumeName, cluster.Name)
+		if err := runtime.CreateVolume(ctx, imageVolumeName, map[string]string{k3d.LabelClusterName: cluster.Name}); err != nil {
+			log.Errorf("Failed to create image volume '%s' for cluster '%s'", imageVolumeName, cluster.Name)
 			return err
 		}
 
@@ -127,10 +127,10 @@ func CreateCluster(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Clus
 		if node.Labels == nil {
 			node.Labels = make(map[string]string) // TODO: maybe create an init function?
 		}
-		node.Labels["k3d.cluster"] = cluster.Name
+		node.Labels[k3d.LabelClusterName] = cluster.Name
 		node.Env = append(node.Env, fmt.Sprintf("K3S_TOKEN=%s", cluster.Token))
-		node.Labels[k3d.LabelToken] = cluster.Token
-		node.Labels["k3d.cluster.url"] = connectionURL
+		node.Labels[k3d.LabelClusterToken] = cluster.Token
+		node.Labels[k3d.LabelClusterURL] = connectionURL
 
 		// append extra labels
 		for k, v := range extraLabels {
@@ -387,7 +387,7 @@ func GetClusters(ctx context.Context, runtime k3drt.Runtime) ([]*k3d.Cluster, er
 	for _, node := range nodes {
 		clusterExists := false
 		for _, cluster := range clusters {
-			if node.Labels["k3d.cluster"] == cluster.Name { // TODO: handle case, where this label doesn't exist
+			if node.Labels[k3d.LabelClusterName] == cluster.Name { // TODO: handle case, where this label doesn't exist
 				cluster.Nodes = append(cluster.Nodes, node)
 				clusterExists = true
 				break
@@ -396,7 +396,7 @@ func GetClusters(ctx context.Context, runtime k3drt.Runtime) ([]*k3d.Cluster, er
 		// cluster is not in the list yet, so we add it with the current node as its first member
 		if !clusterExists {
 			clusters = append(clusters, &k3d.Cluster{
-				Name:  node.Labels["k3d.cluster"],
+				Name:  node.Labels[k3d.LabelClusterName],
 				Nodes: []*k3d.Node{node},
 			})
 		}
@@ -445,7 +445,7 @@ func populateClusterFieldsFromLabels(cluster *k3d.Cluster) error {
 
 		// get k3s cluster's token
 		if cluster.Token == "" {
-			if token, ok := node.Labels[k3d.LabelToken]; ok {
+			if token, ok := node.Labels[k3d.LabelClusterToken]; ok {
 				cluster.Token = token
 			}
 		}
@@ -457,7 +457,7 @@ func populateClusterFieldsFromLabels(cluster *k3d.Cluster) error {
 // GetCluster returns an existing cluster with all fields and node lists populated
 func GetCluster(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Cluster) (*k3d.Cluster, error) {
 	// get nodes that belong to the selected cluster
-	nodes, err := runtime.GetNodesByLabel(ctx, map[string]string{"k3d.cluster": cluster.Name})
+	nodes, err := runtime.GetNodesByLabel(ctx, map[string]string{k3d.LabelClusterName: cluster.Name})
 	if err != nil {
 		log.Errorf("Failed to get nodes for cluster '%s'", cluster.Name)
 	}
@@ -599,4 +599,4 @@ func SortClusters(clusters []*k3d.Cluster) []*k3d.Cluster {
 		return clusters[i].Name < clusters[j].Name
 	})
 	return clusters
-}
\ No newline at end of file
+}
diff --git a/pkg/cluster/kubeconfig.go b/pkg/cluster/kubeconfig.go
index 3aba82e1..c0c2d9bc 100644
--- a/pkg/cluster/kubeconfig.go
+++ b/pkg/cluster/kubeconfig.go
@@ -113,7 +113,7 @@ func GetAndWriteKubeConfig(ctx context.Context, runtime runtimes.Runtime, cluste
 func GetKubeconfig(ctx context.Context, runtime runtimes.Runtime, cluster *k3d.Cluster) (*clientcmdapi.Config, error) {
 	// get all master nodes for the selected cluster
 	// TODO: getKubeconfig: we should make sure, that the master node we're trying to fetch from is actually running
-	masterNodes, err := runtime.GetNodesByLabel(ctx, map[string]string{"k3d.cluster": cluster.Name, "k3d.role": string(k3d.MasterRole)})
+	masterNodes, err := runtime.GetNodesByLabel(ctx, map[string]string{k3d.LabelClusterName: cluster.Name, k3d.LabelRole: string(k3d.MasterRole)})
 	if err != nil {
 		log.Errorln("Failed to get master nodes")
 		return nil, err
@@ -129,11 +129,11 @@ func GetKubeconfig(ctx context.Context, runtime runtimes.Runtime, cluster *k3d.C
 	APIHost := k3d.DefaultAPIHost
 
 	for _, master := range masterNodes {
-		if _, ok := master.Labels["k3d.master.api.port"]; ok {
+		if _, ok := master.Labels[k3d.LabelMasterAPIPort]; ok {
 			chosenMaster = master
-			APIPort = master.Labels["k3d.master.api.port"]
-			if _, ok := master.Labels["k3d.master.api.host"]; ok {
-				APIHost = master.Labels["k3d.master.api.host"]
+			APIPort = master.Labels[k3d.LabelMasterAPIPort]
+			if _, ok := master.Labels[k3d.LabelMasterAPIHost]; ok {
+				APIHost = master.Labels[k3d.LabelMasterAPIHost]
 			}
 			break
 		}
@@ -228,7 +228,7 @@ func WriteKubeConfigToPath(ctx context.Context, kubeconfig *clientcmdapi.Config,
 		return err
 	}
 
-	log.Debugf("Wrote kubeconfig to '%s'", output.Name)
+	log.Debugf("Wrote kubeconfig to '%s'", output.Name())
 
 	return nil
 
diff --git a/pkg/cluster/loadbalancer.go b/pkg/cluster/loadbalancer.go
index 38c9fdb4..75c4ecb6 100644
--- a/pkg/cluster/loadbalancer.go
+++ b/pkg/cluster/loadbalancer.go
@@ -38,7 +38,7 @@ func UpdateLoadbalancerConfig(ctx context.Context, runtime runtimes.Runtime, clu
 	// update cluster details to ensure that we have the latest node list
 	cluster, err = GetCluster(ctx, runtime, cluster)
 	if err != nil {
-		log.Errorln("Failed to update details for cluster '%s'", cluster.Name)
+		log.Errorf("Failed to update details for cluster '%s'", cluster.Name)
 		return err
 	}
 
diff --git a/pkg/cluster/node.go b/pkg/cluster/node.go
index f7908cc2..ea3b8913 100644
--- a/pkg/cluster/node.go
+++ b/pkg/cluster/node.go
@@ -51,7 +51,7 @@ func AddNodeToCluster(ctx context.Context, runtime runtimes.Runtime, node *k3d.N
 	// skeleton
 	if node.Labels == nil {
 		node.Labels = map[string]string{
-			"k3d.role": string(node.Role),
+			k3d.LabelRole: string(node.Role),
 		}
 	}
 	node.Env = []string{}
@@ -102,7 +102,7 @@ func AddNodeToCluster(ctx context.Context, runtime runtimes.Runtime, node *k3d.N
 		}
 	}
 	if !k3sURLFound {
-		if url, ok := node.Labels["k3d.cluster.url"]; ok {
+		if url, ok := node.Labels[k3d.LabelClusterURL]; ok {
 			node.Env = append(node.Env, fmt.Sprintf("K3S_URL=%s", url))
 		} else {
 			log.Warnln("Failed to find K3S_URL value!")
@@ -225,7 +225,7 @@ func CreateNode(ctx context.Context, runtime runtimes.Runtime, node *k3d.Node, c
 	}
 	node.Labels = labels
 	// second most important: the node role label
-	node.Labels["k3d.role"] = string(node.Role)
+	node.Labels[k3d.LabelRole] = string(node.Role)
 
 	// ### Environment ###
 	node.Env = append(node.Env, k3d.DefaultNodeEnv...) // append default node env vars
@@ -258,7 +258,7 @@ func DeleteNode(ctx context.Context, runtime runtimes.Runtime, node *k3d.Node) e
 		log.Error(err)
 	}
 
-	cluster, err := GetCluster(ctx, runtime, &k3d.Cluster{Name: node.Labels["k3d.cluster"]})
+	cluster, err := GetCluster(ctx, runtime, &k3d.Cluster{Name: node.Labels[k3d.LabelClusterName]})
 	if err != nil {
 		log.Errorf("Failed to update loadbalancer: Failed to find cluster for node '%s'", node.Name)
 		return err
@@ -293,9 +293,9 @@ func patchMasterSpec(node *k3d.Node) error {
 
 	// Add labels and TLS SAN for the exposed API
 	// FIXME: For now, the labels concerning the API on the master nodes are only being used for configuring the kubeconfig
-	node.Labels["k3d.master.api.hostIP"] = node.MasterOpts.ExposeAPI.HostIP // TODO: maybe get docker machine IP here
-	node.Labels["k3d.master.api.host"] = node.MasterOpts.ExposeAPI.Host
-	node.Labels["k3d.master.api.port"] = node.MasterOpts.ExposeAPI.Port
+	node.Labels[k3d.LabelMasterAPIHostIP] = node.MasterOpts.ExposeAPI.HostIP // TODO: maybe get docker machine IP here
+	node.Labels[k3d.LabelMasterAPIHost] = node.MasterOpts.ExposeAPI.Host
+	node.Labels[k3d.LabelMasterAPIPort] = node.MasterOpts.ExposeAPI.Port
 
 	node.Args = append(node.Args, "--tls-san", node.MasterOpts.ExposeAPI.Host) // add TLS SAN for non default host name
 
diff --git a/pkg/runtimes/containerd/node.go b/pkg/runtimes/containerd/node.go
index 1147a61c..582fc0bc 100644
--- a/pkg/runtimes/containerd/node.go
+++ b/pkg/runtimes/containerd/node.go
@@ -91,7 +91,7 @@ func (d Containerd) DeleteNode(ctx context.Context, node *k3d.Node) error {
 		return err
 	}
 	if err = container.Delete(ctx, []containerd.DeleteOpts{}...); err != nil {
-		log.Errorln("Failed to delete container", container.ID)
+		log.Errorf("Failed to delete container '%s'", container.ID)
 		return err
 	}
 
diff --git a/pkg/runtimes/docker/node.go b/pkg/runtimes/docker/node.go
index 94e891c7..46fdb009 100644
--- a/pkg/runtimes/docker/node.go
+++ b/pkg/runtimes/docker/node.go
@@ -182,7 +182,7 @@ func getContainerDetails(ctx context.Context, containerID string) (types.Contain
 
 	containerDetails, err := docker.ContainerInspect(ctx, containerID)
 	if err != nil {
-		log.Errorln("Failed to get details for container '%s'", containerID)
+		log.Errorf("Failed to get details for container '%s'", containerID)
 		return types.ContainerJSON{}, err
 	}
 
@@ -301,7 +301,7 @@ func (d Docker) ExecInNode(ctx context.Context, node *k3d.Node, cmd []string) er
 		// get info about exec process inside container
 		execInfo, err := docker.ContainerExecInspect(ctx, exec.ID)
 		if err != nil {
-			log.Errorln("Failed to inspect exec process in node '%s'", node.Name)
+			log.Errorf("Failed to inspect exec process in node '%s'", node.Name)
 			return err
 		}
 
@@ -322,7 +322,7 @@ func (d Docker) ExecInNode(ctx context.Context, node *k3d.Node, cmd []string) er
 
 			logs, err := ioutil.ReadAll(execConnection.Reader)
 			if err != nil {
-				log.Errorln("Failed to get logs from node '%s'", node.Name)
+				log.Errorf("Failed to get logs from node '%s'", node.Name)
 				return err
 			}
 
diff --git a/pkg/runtimes/docker/translate.go b/pkg/runtimes/docker/translate.go
index e2ef8c21..881dd781 100644
--- a/pkg/runtimes/docker/translate.go
+++ b/pkg/runtimes/docker/translate.go
@@ -86,7 +86,7 @@ func TranslateNodeToContainer(node *k3d.Node) (*NodeInDocker, error) {
 	/* Ports */
 	exposedPorts, portBindings, err := nat.ParsePortSpecs(node.Ports)
 	if err != nil {
-		log.Errorln("Failed to parse port specs '%v'", node.Ports)
+		log.Errorf("Failed to parse port specs '%v'", node.Ports)
 		return nil, err
 	}
 	containerConfig.ExposedPorts = exposedPorts
@@ -116,7 +116,7 @@ func TranslateContainerToNode(cont *types.Container) (*k3d.Node, error) {
 		Name:   strings.TrimPrefix(cont.Names[0], "/"), // container name with leading '/' cut off
 		Image:  cont.Image,
 		Labels: cont.Labels,
-		Role:   k3d.NodeRoles[cont.Labels["k3d.role"]],
+		Role:   k3d.NodeRoles[cont.Labels[k3d.LabelRole]],
 		// TODO: all the rest
 	}
 	return node, nil
@@ -142,7 +142,7 @@ func TranslateContainerDetailsToNode(containerDetails types.ContainerJSON) (*k3d
 	// get the clusterNetwork
 	clusterNetwork := ""
 	for networkName := range containerDetails.NetworkSettings.Networks {
-		if strings.HasPrefix(networkName, fmt.Sprintf("%s-%s", k3d.DefaultObjectNamePrefix, containerDetails.Config.Labels["k3d.cluster"])) { // FIXME: catch error if label 'k3d.cluster' does not exist, but this should also never be the case
+		if strings.HasPrefix(networkName, fmt.Sprintf("%s-%s", k3d.DefaultObjectNamePrefix, containerDetails.Config.Labels[k3d.LabelClusterName])) { // FIXME: catch error if label 'k3d.cluster' does not exist, but this should also never be the case
 			clusterNetwork = networkName
 		}
 	}
@@ -150,16 +150,11 @@ func TranslateContainerDetailsToNode(containerDetails types.ContainerJSON) (*k3d
 	// masterOpts
 	masterOpts := k3d.MasterOpts{IsInit: false}
 	for k, v := range containerDetails.Config.Labels {
-		/*
-			node.Labels["k3d.master.api.hostIP"] = node.MasterOpts.ExposeAPI.HostIP // TODO: maybe get docker machine IP here
-			node.Labels["k3d.master.api.host"] = node.MasterOpts.ExposeAPI.Host
-			node.Labels["k3d.master.api.port"] = node.MasterOpts.ExposeAPI.Port
-		*/
-		if k == "k3d.master.api.hostIP" {
+		if k == k3d.LabelMasterAPIHostIP {
 			masterOpts.ExposeAPI.HostIP = v
-		} else if k == "k3d.master.api.host" {
+		} else if k == k3d.LabelMasterAPIHost {
 			masterOpts.ExposeAPI.Host = v
-		} else if k == "k3d.master.api.port" {
+		} else if k == k3d.LabelMasterAPIPort {
 			masterOpts.ExposeAPI.Port = v
 		}
 	}
@@ -182,7 +177,7 @@ func TranslateContainerDetailsToNode(containerDetails types.ContainerJSON) (*k3d
 
 	node := &k3d.Node{
 		Name:       strings.TrimPrefix(containerDetails.Name, "/"), // container name with leading '/' cut off
-		Role:       k3d.NodeRoles[containerDetails.Config.Labels["k3d.role"]],
+		Role:       k3d.NodeRoles[containerDetails.Config.Labels[k3d.LabelRole]],
 		Image:      containerDetails.Image,
 		Volumes:    containerDetails.HostConfig.Binds,
 		Env:        env,
diff --git a/pkg/runtimes/docker/translate_test.go b/pkg/runtimes/docker/translate_test.go
index 44475f5d..31184def 100644
--- a/pkg/runtimes/docker/translate_test.go
+++ b/pkg/runtimes/docker/translate_test.go
@@ -45,7 +45,7 @@ func TestTranslateNodeToContainer(t *testing.T) {
 		Args:    []string{"--some-boolflag"},
 		Ports:   []string{"0.0.0.0:6443:6443/tcp"},
 		Restart: true,
-		Labels:  map[string]string{"k3d.role": string(k3d.MasterRole), "test_key_1": "test_val_1"},
+		Labels:  map[string]string{k3d.LabelRole: string(k3d.MasterRole), "test_key_1": "test_val_1"},
 	}
 
 	expectedRepresentation := &NodeInDocker{
@@ -54,7 +54,7 @@ func TestTranslateNodeToContainer(t *testing.T) {
 			Image:        "rancher/k3s:v0.9.0",
 			Env:          []string{"TEST_KEY_1=TEST_VAL_1"},
 			Cmd:          []string{"server", "--https-listen-port=6443", "--some-boolflag"},
-			Labels:       map[string]string{"k3d.role": string(k3d.MasterRole), "test_key_1": "test_val_1"},
+			Labels:       map[string]string{k3d.LabelRole: string(k3d.MasterRole), "test_key_1": "test_val_1"},
 			ExposedPorts: nat.PortSet{},
 		},
 		HostConfig: container.HostConfig{
diff --git a/pkg/runtimes/docker/util.go b/pkg/runtimes/docker/util.go
index dd79a11c..026f858c 100644
--- a/pkg/runtimes/docker/util.go
+++ b/pkg/runtimes/docker/util.go
@@ -39,7 +39,7 @@ func GetDefaultObjectLabelsFilter(clusterName string) filters.Args {
 	for key, value := range k3d.DefaultObjectLabels {
 		filters.Add("label", fmt.Sprintf("%s=%s", key, value))
 	}
-	filters.Add("label", fmt.Sprintf("k3d.cluster=%s", clusterName))
+	filters.Add("label", fmt.Sprintf("%s=%s", k3d.LabelClusterName, clusterName))
 	return filters
 }
 
@@ -55,7 +55,7 @@ func (d Docker) CopyToNode(ctx context.Context, src string, dest string, node *k
 
 	container, err := getNodeContainer(ctx, node)
 	if err != nil {
-		log.Errorln("Failed to find container for target node '%s'", node.Name)
+		log.Errorf("Failed to find container for target node '%s'", node.Name)
 		return err
 	}
 
diff --git a/pkg/runtimes/docker/volume.go b/pkg/runtimes/docker/volume.go
index 751cce9a..4294c6b0 100644
--- a/pkg/runtimes/docker/volume.go
+++ b/pkg/runtimes/docker/volume.go
@@ -82,7 +82,7 @@ func (d Docker) DeleteVolume(ctx context.Context, name string) error {
 	// check if volume is still in use
 	if vol.UsageData != nil {
 		if vol.UsageData.RefCount > 0 {
-			log.Errorf("Failed to delete volume '%s'")
+			log.Errorf("Failed to delete volume '%s'", vol.Name)
 			return fmt.Errorf("Volume '%s' is still referenced by %d containers", name, vol.UsageData.RefCount)
 		}
 	}
diff --git a/pkg/tools/tools.go b/pkg/tools/tools.go
index 9d506790..62ddbcf6 100644
--- a/pkg/tools/tools.go
+++ b/pkg/tools/tools.go
@@ -189,7 +189,7 @@ func LoadImagesIntoCluster(ctx context.Context, runtime runtimes.Runtime, images
 	// delete tools container
 	log.Infoln("Removing k3d-tools node...")
 	if err := runtime.DeleteNode(ctx, toolsNode); err != nil {
-		log.Errorln("Failed to delete tools node '%s': Try to delete it manually", toolsNode.Name)
+		log.Errorf("Failed to delete tools node '%s': Try to delete it manually", toolsNode.Name)
 	}
 
 	log.Infoln("Successfully imported image(s)")
@@ -210,7 +210,7 @@ func startToolsNode(ctx context.Context, runtime runtimes.Runtime, cluster *k3d.
 		Args:    []string{"noop"},
 		Labels:  k3d.DefaultObjectLabels,
 	}
-	node.Labels["k3d.cluster"] = cluster.Name
+	node.Labels[k3d.LabelClusterName] = cluster.Name
 	if err := runtime.CreateNode(ctx, node); err != nil {
 		log.Errorf("Failed to create tools container for cluster '%s'", cluster.Name)
 		return node, err
diff --git a/pkg/types/types.go b/pkg/types/types.go
index f569864b..ef9f6b92 100644
--- a/pkg/types/types.go
+++ b/pkg/types/types.go
@@ -76,10 +76,16 @@ var DefaultObjectLabels = map[string]string{
 
 // List of k3d technical label name
 const (
-	LabelToken           string = "k3d.cluster.token"
+	LabelClusterName     string = "k3d.cluster"
+	LabelClusterURL      string = "k3d.cluster.url"
+	LabelClusterToken    string = "k3d.cluster.token"
 	LabelImageVolume     string = "k3d.cluster.imageVolume"
 	LabelNetworkExternal string = "k3d.cluster.network.external"
 	LabelNetwork         string = "k3d.cluster.network"
+	LabelRole            string = "k3d.role"
+	LabelMasterAPIPort   string = "k3d.master.api.port"
+	LabelMasterAPIHost   string = "k3d.master.api.host"
+	LabelMasterAPIHostIP string = "k3d.master.api.hostIP"
 )
 
 // DefaultRoleCmds maps the node roles to their respective default commands