clusterDelete: no error if no cluster was found (fixes #379)

cmd/cluster/clusterDelete.go

@@ -113,11 +113,14 @@ func parseDeleteClusterCmd(cmd *cobra.Command, args []string) []*k3d.Cluster {
 	}
 
 	for _, name := range clusternames {
-		cluster, err := cluster.ClusterGet(cmd.Context(), runtimes.SelectedRuntime, &k3d.Cluster{Name: name})
+		c, err := cluster.ClusterGet(cmd.Context(), runtimes.SelectedRuntime, &k3d.Cluster{Name: name})
 		if err != nil {
+			if err == cluster.ClusterGetNoNodesFoundError {
+				continue
+			}
 			log.Fatalln(err)
 		}
-		clusters = append(clusters, cluster)
+		clusters = append(clusters, c)
 	}
 
 	return clusters

pkg/cluster/cluster.go

@@ -24,6 +24,7 @@ package cluster
 import (
 	"bytes"
 	"context"
+	"errors"
 	"fmt"
 	"sort"
 	"strconv"
@@ -488,6 +489,8 @@ func populateClusterFieldsFromLabels(cluster *k3d.Cluster) error {
 	return nil
 }
 
+var ClusterGetNoNodesFoundError = errors.New("No nodes found for given cluster")
+
 // ClusterGet returns an existing cluster with all fields and node lists populated
 func ClusterGet(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Cluster) (*k3d.Cluster, error) {
 	// get nodes that belong to the selected cluster
@@ -497,7 +500,7 @@ func ClusterGet(ctx context.Context, runtime k3drt.Runtime, cluster *k3d.Cluster
 	}
 
 	if len(nodes) == 0 {
-		return nil, fmt.Errorf("No nodes found for cluster '%s'", cluster.Name)
+		return nil, ClusterGetNoNodesFoundError
 	}
 
 	// append nodes