Base cluster-update.sh to define needed link_multus_into_k3s

The remaining contents of this file coming in another PR

Signed-off-by: Andrew Durbin <[email protected]>

pkg/kube/Dockerfile

@@ -26,6 +26,8 @@ COPY cluster-init.sh /usr/bin/
 COPY cluster-utils.sh /usr/bin/
 COPY cgconfig.conf /etc
 
+COPY cluster-update.sh /usr/bin/
+
 # k3s
 COPY install-etcdctl.sh /usr/bin/
 RUN mkdir -p /etc/rancher/k3s

pkg/kube/cluster-init.sh

@@ -29,6 +29,8 @@ CLUSTER_WAIT_FILE="/run/kube/cluster-change-wait-ongoing"
 # Source the utility script, Dockerfile copies the script to /usr/bin
 # shellcheck source=/dev/null
 . /usr/bin/cluster-utils.sh
+# shellcheck source=pkg/kube/cluster-update.sh
+. /usr/bin/cluster-update.sh
 
 # get cluster IP address from the cluster status file
 get_cluster_node_ip() {

pkg/kube/cluster-update.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+#
+# Copyright (c) 2024 Zededa, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+link_multus_into_k3s() {
+    ln -s /var/lib/cni/bin/multus /var/lib/rancher/k3s/data/current/bin/multus
+}