Doc/gardenctl config (#163)

* not quite there yet * found a good solution * small correction * small correction 2 * Update README.md Co-authored-by: Peter Sutter <peter.sutter@sap.com> * no mo export * no mo export 2 * dynamic ns Co-authored-by: Peter Sutter <peter.sutter@sap.com>
gardener · Oct 21, 2022 · 2dcde47 · 2dcde47
1 parent 33fa169
commit 2dcde47
Showing 1 changed file with 12 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -61,11 +61,20 @@ Example `config` command:
 # Adapt the path to your kubeconfig file for the garden cluster
 export KUBECONFIG=~/relative/path/to/kubeconfig.yaml
 
-# Fetch cluster-identity of garden cluster
-CLUSTER_IDENTITY=$(kubectl -n kube-system get configmap cluster-identity -ojsonpath={.data.cluster-identity})
+# Method 1 : Fetch cluster-identity of garden cluster from the configmap
+cluster_identity=$(kubectl -n kube-system get configmap cluster-identity -ojsonpath={.data.cluster-identity})
+# OR
+# Method 2 : If you don't have access to the kube-system namespace in the garden cluster, the garden cluster-identity can also be extracted from every shoot's yaml
+project="your-project-name" # Change to your project name
+shoot="your-shoot-name" # Change to any shoot's name in your project
+# Simply copy/paste the following lines
+ns=$(kubectl get project $project -ojsonpath={.spec.namespace})
+prefix="shoot--$project--$shoot-"$(kubectl get shoot -n $ns $shoot -ojsonpath={.metadata.uid})"-"
+identity_status=$(kubectl get shoot -n $ns $shoot -ojsonpath={.status.clusterIdentity})
+cluster_identity=$(echo ${identity_status#"$prefix"})
 
 # Configure garden cluster
-gardenctl config set-garden $CLUSTER_IDENTITY --kubeconfig $KUBECONFIG
+gardenctl config set-garden $cluster_identity --kubeconfig $KUBECONFIG
 ```
 This command will create or update a garden with the provided identity and kubeconfig path of your garden cluster.