add script test

Dockerfile

@@ -6,4 +6,8 @@ RUN chmod +x kubectl
 RUN mv ./kubectl /usr/local/bin/
 RUN curl -LO https://github.com/kvaps/kubectl-node-shell/raw/master/kubectl-node_shell
 RUN chmod +x ./kubectl-node_shell
-RUN mv ./kubectl-node_shell /usr/local/bin/kubectl-node_shell
+RUN mv ./kubectl-node_shell /usr/local/bin/kubectl-node_shell
+
+COPY test.sh /app
+WORKDIR /app
+CMD ["/bin/sh","-c","/app/test.sh"]

test.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# Define the label key and value you want to search for
+LABEL=${NODE_LABEL:-}
+
+# Use `kubectl` to get the node name by label
+NODE_NAMES=$(kubectl get nodes --selector="$LABEL" -o custom-columns=NAME:.metadata.name --no-headers)
+
+
+if [ -z "$NODE_NAMES" ]; then
+  echo "No nodes found with the label $LABEL_KEY=$LABEL_VALUE."
+  exit 1
+fi
+
+for NODE_NAME in $NODE_NAMES; do
+  echo "Running command on node: $NODE_NAME"
+  kubectl node_shell $NODE_NAME -- reboot
+done