enable clusters package to add --kubeconfig flag

Author: Diaphteiros

pkg/clusters/cluster.go

@@ -61,6 +61,7 @@ func (c *Cluster) WithRESTConfig(cfg *rest.Config) *Cluster {
 }
 
 // RegisterConfigPathFlag adds a flag '--<id>-cluster' for the cluster's config path to the given flag set.
+// If only a single kubeconfig is required, RegisterSingleConfigPathFlag can be used instead to have the flag named '--kubeconfig'.
 // Panics if the cluster's id is not set.
 func (c *Cluster) RegisterConfigPathFlag(flags *flag.FlagSet) {
 	if !c.HasID() {
@@ -69,6 +70,12 @@ func (c *Cluster) RegisterConfigPathFlag(flags *flag.FlagSet) {
 	flags.StringVar(&c.cfgPath, fmt.Sprintf("%s-cluster", c.id), "", fmt.Sprintf("Path to the %s cluster kubeconfig file or directory containing either a kubeconfig or host, token, and ca file. Leave empty to use in-cluster config.", c.id))
 }
 
+// RegisterSingleConfigPathFlag adds a '--kubeconfig' flag for the cluster's config path to the given flag set.
+// If more than one kubeconfig is required, consider using RegisterConfigPathFlag instead, which is identical, but names the flag '--<id>-cluster'.
+func (c *Cluster) RegisterSingleConfigPathFlag(flags *flag.FlagSet) {
+	flags.StringVar(&c.cfgPath, "kubeconfig", "", "Path to the kubeconfig file or directory containing either a kubeconfig or host, token, and ca file. Leave empty to use in-cluster config.")
+}
+
 // WithClientOptions allows to overwrite the default client options.
 // It must be called before InitializeClient().
 // Note that using this method disables the the scheme injection during client initialization.