[AKS] az aks create: Add --network-plugin=none support for BYO CNI (#…

…23344)

src/azure-cli/azure/cli/command_modules/acs/_consts.py

@@ -73,6 +73,7 @@
 # network plugin
 CONST_NETWORK_PLUGIN_KUBENET = "kubenet"
 CONST_NETWORK_PLUGIN_AZURE = "azure"
+CONST_NETWORK_PLUGIN_NONE = "none"
 
 # consts for addons
 # http application routing

src/azure-cli/azure/cli/command_modules/acs/_help.py

@@ -365,11 +365,11 @@
   - name: --max-pods -m
     type: int
     short-summary: The maximum number of pods deployable to a node.
-    long-summary: If not specified, defaults to 110, or 30 for advanced networking configurations.
+    long-summary: If not specified, defaults based on network-plugin. 30 for "azure", 110 for "kubenet", or 250 for "none".
   - name: --network-plugin
     type: string
     short-summary: The Kubernetes network plugin to use.
-    long-summary: Specify "azure" for advanced networking configurations. Defaults to "kubenet".
+    long-summary: Specify "azure" for routable pod IPs from VNET, "kubenet" for non-routable pod IPs with an overlay network, or "none" for no networking configured. Defaults to "kubenet".
   - name: --network-policy
     type: string
     short-summary: The Kubernetes network policy to use.
@@ -610,6 +610,8 @@
     text: az aks create -g MyResourceGroup -n MyManagedCluster --kubernetes-version 1.20.9 --snapshot-id "/subscriptions/00000/resourceGroups/AnotherResourceGroup/providers/Microsoft.ContainerService/snapshots/mysnapshot1"
   - name: create a kubernetes cluster with support of hostgroup id.
     text: az aks create -g MyResourceGroup -n MyMC --kubernetes-version 1.20.13 --location westus2 --host-group-id /subscriptions/00000/resourceGroups/AnotherResourceGroup/providers/Microsoft.ContainerService/hostGroups/myHostGroup --node-vm-size VMSize --enable-managed-identity --assign-identity <user_assigned_identity_resource_id>
+  - name: Create a kubernetes cluster with no CNI installed.
+    text: az aks create -g MyResourceGroup -n MyManagedCluster --network-plugin none
 """
 
 helps['aks update'] = """
@@ -1009,7 +1011,7 @@
   - name: --max-pods -m
     type: int
     short-summary: The maximum number of pods deployable to a node.
-    long-summary: If not specified, defaults to 110, or 30 for advanced networking configurations.
+    long-summary: If not specified, defaults based on network-plugin. 30 for "azure", 110 for "kubenet", or 250 for "none".
   - name: --zones -z
     type: string array
     short-summary: Availability zones where agent nodes will be placed.

src/azure-cli/azure/cli/command_modules/acs/_params.py

@@ -12,7 +12,7 @@
     get_vm_size_completion_list)
 from azure.cli.command_modules.acs._consts import (
     CONST_LOAD_BALANCER_SKU_BASIC, CONST_LOAD_BALANCER_SKU_STANDARD,
-    CONST_NETWORK_PLUGIN_AZURE, CONST_NETWORK_PLUGIN_KUBENET,
+    CONST_NETWORK_PLUGIN_AZURE, CONST_NETWORK_PLUGIN_KUBENET, CONST_NETWORK_PLUGIN_NONE,
     CONST_NODE_IMAGE_UPGRADE_CHANNEL, CONST_NODEPOOL_MODE_SYSTEM,
     CONST_NODEPOOL_MODE_USER, CONST_NONE_UPGRADE_CHANNEL,
     CONST_OS_DISK_TYPE_EPHEMERAL, CONST_OS_DISK_TYPE_MANAGED,
@@ -101,7 +101,7 @@
 
 # consts for ManagedCluster
 load_balancer_skus = [CONST_LOAD_BALANCER_SKU_BASIC, CONST_LOAD_BALANCER_SKU_STANDARD]
-network_plugins = [CONST_NETWORK_PLUGIN_KUBENET, CONST_NETWORK_PLUGIN_AZURE]
+network_plugins = [CONST_NETWORK_PLUGIN_KUBENET, CONST_NETWORK_PLUGIN_AZURE, CONST_NETWORK_PLUGIN_NONE]
 outbound_types = [CONST_OUTBOUND_TYPE_LOAD_BALANCER, CONST_OUTBOUND_TYPE_USER_DEFINED_ROUTING, CONST_OUTBOUND_TYPE_MANAGED_NAT_GATEWAY, CONST_OUTBOUND_TYPE_USER_ASSIGNED_NAT_GATEWAY]
 auto_upgrade_channels = [
     CONST_RAPID_UPGRADE_CHANNEL,