Add kubernetes version config option to BYO CNI cluster script

Co-authored-by: camrynl <[email protected]>

Author: Copilot

hack/aks/README-byocni.md

@@ -53,6 +53,7 @@ Preview the commands that would be executed without actually running them:
 | `--cluster` | Name of the AKS cluster | `byocni-cluster` |
 | `--subscription` | Azure subscription ID | *Required* |
 | `--azcli` | Azure CLI command | `az` |
+| `--kubernetes-version` | Kubernetes version for the cluster | `1.29` |
 | `--networking-mode` | Networking mode (overlay, swift, nodesubnet, dualstack-overlay, vnetscale-swift) | `overlay` |
 | `--no-kube-proxy` | Create cluster without kube-proxy | `true` |
 | `--with-kube-proxy` | Create cluster with kube-proxy | Overrides --no-kube-proxy |
@@ -133,14 +134,23 @@ The script supports the following Cilium versions based on available manifests (
     --cilium-version-tag v1.17.0
 ```
 
-### Example 6: Only cluster and CNS, no CNI plugin
+### Example 6: Cluster with specific Kubernetes version
+```bash
+./create-byocni-cluster.sh \
+    --subscription 9b8218f9-902a-4d20-a65c-e98acec5362f \
+    --kubernetes-version 1.30 \
+    --networking-mode overlay \
+    --cni-plugin cilium
+```
+
+### Example 7: Only cluster and CNS, no CNI plugin
 ```bash
 ./create-byocni-cluster.sh \
     --subscription 9b8218f9-902a-4d20-a65c-e98acec5362f \
     --cni-plugin none
 ```
 
-### Example 7: Using different image registry
+### Example 8: Using different image registry
 ```bash
 ./create-byocni-cluster.sh \
     --subscription 9b8218f9-902a-4d20-a65c-e98acec5362f \

hack/aks/create-byocni-cluster.sh

@@ -20,6 +20,7 @@ DEFAULT_CILIUM_VERSION_TAG=""
 DEFAULT_IPV6_HP_BPF_VERSION=""
 DEFAULT_CNS_IMAGE_REPO="MCR"
 DEFAULT_AZCLI="az"
+DEFAULT_KUBERNETES_VERSION="1.29"
 
 # Script configuration
 SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
@@ -39,6 +40,7 @@ OPTIONS:
     -c, --cluster CLUSTER_NAME      Name of the AKS cluster (default: ${DEFAULT_CLUSTER_NAME})
     -s, --subscription SUB_ID       Azure subscription ID (required)
     -z, --azcli AZCLI_COMMAND      Azure CLI command (default: ${DEFAULT_AZCLI})
+    -k, --kubernetes-version VER    Kubernetes version for the cluster (default: ${DEFAULT_KUBERNETES_VERSION})
     -n, --networking-mode MODE      Networking mode: overlay, swift, nodesubnet, dualstack-overlay, vnetscale-swift (default: ${DEFAULT_NETWORKING_MODE})
     --no-kube-proxy                 Create cluster without kube-proxy (default: ${DEFAULT_NO_KUBE_PROXY})
     --with-kube-proxy               Create cluster with kube-proxy (overrides --no-kube-proxy)
@@ -300,7 +302,7 @@ create_cluster() {
             ;;
     esac
 
-    local make_cmd="AZCLI=${AZCLI} CLUSTER=${CLUSTER_NAME} SUB=${SUBSCRIPTION} make ${make_target}"
+    local make_cmd="AZCLI=${AZCLI} CLUSTER=${CLUSTER_NAME} SUB=${SUBSCRIPTION} K8S_VER=${KUBERNETES_VERSION} make ${make_target}"
 
     log "Using make target: ${make_target}"
     execute "cd '${SCRIPT_DIR}' && ${make_cmd}"
@@ -472,6 +474,7 @@ CILIUM_VERSION_TAG="${DEFAULT_CILIUM_VERSION_TAG}"
 IPV6_HP_BPF_VERSION="${DEFAULT_IPV6_HP_BPF_VERSION}"
 CNS_IMAGE_REPO="${DEFAULT_CNS_IMAGE_REPO}"
 AZCLI="${DEFAULT_AZCLI}"
+KUBERNETES_VERSION="${DEFAULT_KUBERNETES_VERSION}"
 DRY_RUN="false"
 
 while [[ $# -gt 0 ]]; do
@@ -488,6 +491,10 @@ while [[ $# -gt 0 ]]; do
             AZCLI="$2"
             shift 2
             ;;
+        -k|--kubernetes-version)
+            KUBERNETES_VERSION="$2"
+            shift 2
+            ;;
         -n|--networking-mode)
             NETWORKING_MODE="$2"
             shift 2
@@ -562,6 +569,7 @@ main() {
     log "  Cluster Name: ${CLUSTER_NAME}"
     log "  Subscription: ${SUBSCRIPTION}"
     log "  Azure CLI: ${AZCLI}"
+    log "  Kubernetes Version: ${KUBERNETES_VERSION}"
     log "  Networking Mode: ${NETWORKING_MODE}"
     log "  No Kube-proxy: ${NO_KUBE_PROXY}"
     log "  CNI Plugin: ${CNI_PLUGIN}"