Rename CLUSTER env var to CLUSTER_NAME for consistency

CLUSTER_NAME is more descriptive than the bare CLUSTER. This renames
the environment variable everywhere: Go code, Makefile, shell scripts,
CI pipeline, docker-compose, and documentation.

Author: tuxerrante

.pipelines/ci.yml

@@ -275,9 +275,9 @@ stages:
           # Run the E2E test suite
           - bash: |
               . ./hack/e2e/run-rp-and-e2e.sh
-              echo "##vso[task.setvariable variable=CLUSTER]${CLUSTER}"
+              echo "##vso[task.setvariable variable=CLUSTER_NAME]${CLUSTER_NAME}"
               echo "##vso[task.setvariable variable=DATABASE_NAME]${DATABASE_NAME}"
-            displayName: Set CLUSTER and DATABASE_NAME
+            displayName: Set CLUSTER_NAME and DATABASE_NAME
           - bash: |
               . ./hack/e2e/run-rp-and-e2e.sh
               az acr login --name arosvcdev
@@ -312,7 +312,7 @@ stages:
               # Since must-gather runs independently, we rebuild the binary on-demand.
               . secrets/env
               go build ./hack/db
-              ./hack/get-admin-kubeconfig.sh /subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$CLUSTER/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER > admin.kubeconfig
+              ./hack/get-admin-kubeconfig.sh /subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$CLUSTER_NAME/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME > admin.kubeconfig
               export KUBECONFIG=$(pwd)/admin.kubeconfig
               wget -nv https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp/$(OpenShiftCLIVersion)/openshift-client-linux-$(OpenShiftCLIVersion).tar.gz
               tar xf openshift-client-linux-$(OpenShiftCLIVersion).tar.gz
@@ -406,9 +406,9 @@ stages:
           - bash: |
               . secrets/env
               . ./hack/e2e/run-rp-and-e2e.sh
-              echo "##vso[task.setvariable variable=CLUSTER]${CLUSTER}"
+              echo "##vso[task.setvariable variable=CLUSTER_NAME]${CLUSTER_NAME}"
               echo "##vso[task.setvariable variable=DATABASE_NAME]${DATABASE_NAME}"
-            displayName: Set CLUSTER and DATABASE_NAME
+            displayName: Set CLUSTER_NAME and DATABASE_NAME
           - bash: |
               sudo tdnf install -y azurelinux-repos-extended
               sudo tdnf install -y yq
@@ -460,7 +460,7 @@ stages:
               # Since must-gather runs independently, we rebuild the binary on-demand.
               . secrets/env
               go build ./hack/db
-              ./hack/get-admin-kubeconfig.sh /subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$CLUSTER/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER > admin.kubeconfig
+              ./hack/get-admin-kubeconfig.sh /subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$CLUSTER_NAME/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME > admin.kubeconfig
               export KUBECONFIG=$(pwd)/admin.kubeconfig
               wget -nv https://mirror.openshift.com/pub/openshift-v4/x86_64/clients/ocp/$(OpenShiftCLIVersion)/openshift-client-linux-$(OpenShiftCLIVersion).tar.gz
               tar xf openshift-client-linux-$(OpenShiftCLIVersion).tar.gz

Makefile

@@ -429,7 +429,7 @@ unit-test-python:
 
 .PHONY: admin.kubeconfig
 admin.kubeconfig: ## Get cluster admin kubeconfig
-	hack/get-admin-kubeconfig.sh /subscriptions/${AZURE_SUBSCRIPTION_ID}/resourceGroups/${RESOURCEGROUP}/providers/Microsoft.RedHatOpenShift/openShiftClusters/${CLUSTER} >admin.kubeconfig
+	hack/get-admin-kubeconfig.sh /subscriptions/${AZURE_SUBSCRIPTION_ID}/resourceGroups/${RESOURCEGROUP}/providers/Microsoft.RedHatOpenShift/openShiftClusters/${CLUSTER_NAME} >admin.kubeconfig
 
 .PHONY: aks.kubeconfig
 aks.kubeconfig: ## Get AKS admin kubeconfig

docker-compose.yml

@@ -183,7 +183,7 @@ services:
     environment:
       <<: *common-env
       ARO_SELENIUM_HOSTNAME:
-      CLUSTER:
+      CLUSTER_NAME:
       E2E_DELETE_CLUSTER:
       E2E_LABEL:
       OS_CLUSTER_VERSION:

docs/adding-new-instance-types.md

@@ -42,7 +42,7 @@ The desired instance types should be free of any restrictions. The subscription
 3) Follow steps in https://docs.microsoft.com/en-us/azure/openshift/tutorial-create-cluster to create a cluster, specifying `-worker-vm-size` and/or `--master-vm-size` in the `az aro create` step to specify an alternate sku:
 
 ~~~
-az aro create   --resource-group $RESOURCEGROUP   --name $CLUSTER   --vnet aro-lseries   --master-subnet master-subnet   --worker-subnet worker-subnet   --worker-vm-size "Standard_L8s_v2"
+az aro create   --resource-group $RESOURCEGROUP   --name $CLUSTER_NAME   --vnet aro-lseries   --master-subnet master-subnet   --worker-subnet worker-subnet   --worker-vm-size "Standard_L8s_v2"
 ~~~
 
 4) Once an install with an alternate size is successful, a basic check of cluster health can be conducted, as well as local e2e tests to confirm supportability.

docs/deploy-development-rp.md

@@ -203,13 +203,13 @@ mock a cluster MSI. This script will also create the platform identities, platfo
 
       ```bash
       # Create the cluster
-      CLUSTER=<cluster-name> go run ./hack/cluster create
+      CLUSTER_NAME=<cluster-name> go run ./hack/cluster create
       ```
 
       Later the cluster can be deleted as follows:
 
       ```bash
-      CLUSTER=<cluster-name> go run ./hack/cluster delete
+      CLUSTER_NAME=<cluster-name> go run ./hack/cluster delete
       ```
 
       By default, a public cluster will be created. In order to create a private cluster, set the `PRIVATE_CLUSTER` environment variable to `true` prior to creation. Internet access from the cluster can also be restricted by setting the `NO_INTERNET` environment variable to `true`.
@@ -365,7 +365,7 @@ After that, when you [create](https://github.com/Azure/ARO-RP/blob/master/docs/d
 ## Make Admin-Action API call(s) to a running local-rp
 
 ```bash
-export CLUSTER=<cluster-name>
+export CLUSTER_NAME=<cluster-name>
 export AZURE_SUBSCRIPTION_ID=<subscription-id>
 export RESOURCEGROUP=<resource-group-name>
   [OR]
@@ -375,62 +375,62 @@ export RESOURCEGROUP=<resource-group-name>
 - Perform AdminUpdate on a dev cluster
 
   ```bash
-  curl -X PATCH -k "https://localhost:8443/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER?api-version=admin" --header "Content-Type: application/json" -d "{}"
+  curl -X PATCH -k "https://localhost:8443/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME?api-version=admin" --header "Content-Type: application/json" -d "{}"
   ```
 
 - Get Cluster details of a dev cluster
 
   ```bash
-  curl -X GET -k "https://localhost:8443/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER?api-version=admin" --header "Content-Type: application/json" -d "{}"
+  curl -X GET -k "https://localhost:8443/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME?api-version=admin" --header "Content-Type: application/json" -d "{}"
   ```
 
 - Get SerialConsole logs of a VM of dev cluster
 
   ```bash
   VMNAME="aro-cluster-qplnw-master-0"
-  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/serialconsole?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
+  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/serialconsole?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
   ```
 
 - Redeploy a VM in a dev cluster
 
   ```bash
   VMNAME="aro-cluster-qplnw-master-0"
-  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/redeployvm?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
+  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/redeployvm?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
   ```
 
 - Stop a VM in a dev cluster
 
   ```bash
   VMNAME="aro-cluster-qplnw-master-0"
-  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/stopvm?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
+  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/stopvm?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
   ```
 
 - Stop and [deallocate a VM](https://learn.microsoft.com/en-us/azure/virtual-machines/states-billing) in a dev cluster
 
   ```bash
   VMNAME="aro-cluster-qplnw-master-0"
-  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/stopvm?vmName=$VMNAME&deallocateVM=True" --header "Content-Type: application/json" -d "{}"
+  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/stopvm?vmName=$VMNAME&deallocateVM=True" --header "Content-Type: application/json" -d "{}"
   ```
 
 - Start a VM in a dev cluster
 
   ```bash
   VMNAME="aro-cluster-qplnw-master-0"
-  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/startvm?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
+  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/startvm?vmName=$VMNAME" --header "Content-Type: application/json" -d "{}"
   ```
 
 - List VM Resize Options for a master node of dev cluster
 
   ```bash
-  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/skus" --header "Content-Type: application/json" -d "{}"
+  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/skus" --header "Content-Type: application/json" -d "{}"
   ```
 
 - Resize master node of a dev cluster
 
   ```bash
   VMNAME="aro-cluster-qplnw-master-0"
   VMSIZE="Standard_D16s_v3"
-  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/resize?vmName=$VMNAME&vmSize=$VMSIZE" --header "Content-Type: application/json" -d "{}"
+  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/resize?vmName=$VMNAME&vmSize=$VMSIZE" --header "Content-Type: application/json" -d "{}"
   ```
 
 - List Clusters of a local-rp
@@ -442,13 +442,13 @@ export RESOURCEGROUP=<resource-group-name>
 - List cluster Azure Resources of a dev cluster
 
   ```bash
-  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/resources"
+  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/resources"
   ```
 
 - Perform Cluster Upgrade on a dev cluster
 
   ```bash
-  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/upgrade"
+  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/upgrade"
   ```
 
 - Get container logs from an OpenShift pod in a cluster
@@ -457,7 +457,7 @@ export RESOURCEGROUP=<resource-group-name>
   NAMESPACE=<namespace-name>
   POD=<pod-name>
   CONTAINER=<container-name>
-  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/kubernetespodlogs?podname=$POD&namespace=$NAMESPACE&container=$CONTAINER"
+  curl -X GET -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/kubernetespodlogs?podname=$POD&namespace=$NAMESPACE&container=$CONTAINER"
   ```
 
 - List Supported VM Sizes
@@ -470,27 +470,27 @@ export RESOURCEGROUP=<resource-group-name>
 - Perform Etcd Recovery Operation on a cluster
 
   ```bash
-  curl -X PATCH -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/etcdrecovery"
+  curl -X PATCH -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/etcdrecovery"
   ```
 
 - Delete a managed resource
   ```bash
   MANAGED_RESOURCEID=<id of managed resource to delete>
-  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/deletemanagedresource?managedResourceID=$MANAGED_RESOURCEID"
+  curl -X POST -k "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/deletemanagedresource?managedResourceID=$MANAGED_RESOURCEID"
   ```
 
 - Get top pod metrics for a dev cluster:
 
   ```bash
   curl -X GET -k \
-    "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/top/pods" 
+    "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/top/pods" 
   ```
 
 - Get top node metrics for a dev cluster
   
   ```bash
   curl -X GET -k \
-  "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER/top/nodes"
+  "https://localhost:8443/admin/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME/top/nodes"
   ```
 
 ## OpenShift Version
@@ -557,13 +557,13 @@ If you want to run the installer version via hive and not in container, you will
 
   ```bash
   sudo openvpn secrets/vpn-$LOCATION.ovpn &
-  CLUSTER=cluster hack/ssh-agent.sh bootstrap
+  CLUSTER_NAME=cluster hack/ssh-agent.sh bootstrap
   ```
 
 - Get an admin kubeconfig:
 
   ```bash
-  CLUSTER=cluster make admin.kubeconfig
+  CLUSTER_NAME=cluster make admin.kubeconfig
   export KUBECONFIG=admin.kubeconfig
   ```
 
@@ -584,11 +584,11 @@ If you want to run the installer version via hive and not in container, you will
   aro-dev-abc123-worker-eastus3-cbqs2   Ready      worker   47h   v1.19.0+2f3101c
 
 
-  CLUSTER=cluster hack/ssh-agent.sh master0 # master node aro-dev-abc123-master-0
-  CLUSTER=cluster hack/ssh-agent.sh aro-dev-abc123-worker-eastus1-2s5rb # worker aro-dev-abc123-worker-eastus1-2s5rb
-  CLUSTER=cluster hack/ssh-agent.sh eastus1 # worker aro-dev-abc123-worker-eastus1-2s5rb
-  CLUSTER=cluster hack/ssh-agent.sh 2s5rb  # worker aro-dev-abc123-worker-eastus1-2s5rb
-  CLUSTER=cluster hack/ssh-agent.sh bootstrap # the bootstrap node used to provision cluster
+  CLUSTER_NAME=cluster hack/ssh-agent.sh master0 # master node aro-dev-abc123-master-0
+  CLUSTER_NAME=cluster hack/ssh-agent.sh aro-dev-abc123-worker-eastus1-2s5rb # worker aro-dev-abc123-worker-eastus1-2s5rb
+  CLUSTER_NAME=cluster hack/ssh-agent.sh eastus1 # worker aro-dev-abc123-worker-eastus1-2s5rb
+  CLUSTER_NAME=cluster hack/ssh-agent.sh 2s5rb  # worker aro-dev-abc123-worker-eastus1-2s5rb
+  CLUSTER_NAME=cluster hack/ssh-agent.sh bootstrap # the bootstrap node used to provision cluster
   ```
 
 # Debugging AKS Cluster

docs/deploy-full-rp-service-in-dev.md

@@ -428,11 +428,11 @@
 
 1. Create the cluster
     ```bash
-    export CLUSTER=$USER
+    export CLUSTER_NAME=$USER
 
     az aro create \
         --resource-group $RESOURCEGROUP \
-        --name $CLUSTER \
+        --name $CLUSTER_NAME \
         --vnet aro-vnet \
         --master-subnet master-subnet \
         --worker-subnet worker-subnet

docs/disk-encryption-set.md

@@ -77,7 +77,7 @@ az keyvault set-policy -n $KEYVAULT_NAME \
   - run the az aro create command
 ```bash
 az aro create --resource-group $RESOURCEGROUP \
-              --name $CLUSTER  \
+              --name $CLUSTER_NAME  \
               --vnet aro-vnet  \
               --master-subnet master-subnet \
               --worker-subnet worker-subnet \

docs/operators.md

@@ -104,7 +104,7 @@ export ARO_IMAGE=quay.io/<user>/aro:latest
 - We can mimick the AdminUpdate when updating the ARO Operator
 This is the way we would test the same PUCM workflow we would use in Prod to update the operator.
 ```
-curl -X PATCH -k "https://localhost:8443/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER?api-version=admin" --header "Content-Type: application/json" -d "{}"
+curl -X PATCH -k "https://localhost:8443/subscriptions/$AZURE_SUBSCRIPTION_ID/resourceGroups/$RESOURCEGROUP/providers/Microsoft.RedHatOpenShift/openShiftClusters/$CLUSTER_NAME?api-version=admin" --header "Content-Type: application/json" -d "{}"
 ```
 
 ### How to create & publish ARO Operator image to ACR/Quay

docs/testing.md

@@ -79,8 +79,8 @@ End to end tests are run using ginkgo. You can run subsets of tests or ignore so
 # source your environment file
 . ./secrets/env
 
-# set the CLUSTER env if you are testing locally
-export CLUSTER=<cluster-name>
+# set the CLUSTER_NAME env if you are testing locally
+export CLUSTER_NAME=<cluster-name>
 
 # source the e2e helper file
 . ./hack/e2e/run-rp-and-e2e.sh
@@ -119,13 +119,13 @@ clean_e2e_db
 If you already created a dev cluster, you can run the e2e tests just by running the following command:
 
 ```bash
-CLUSTER=<cluster-name> RESOURCEGROUP=<resource-group> make test-e2e
+CLUSTER_NAME=<cluster-name> RESOURCEGROUP=<resource-group> make test-e2e
 ```
 
 For smoke tests:
 
 ```bash
-CLUSTER=<cluster-name> RESOURCEGROUP=<resource-group> E2E_LABEL=smoke make test-e2e
+CLUSTER_NAME=<cluster-name> RESOURCEGROUP=<resource-group> E2E_LABEL=smoke make test-e2e
 ```
 
 ### Run tests to private clusters
@@ -141,7 +141,7 @@ sudo openvpn secrets/vpn-eastus.ovpn  # for eastus
 # sudo openvpn secrets/vpn-aks-westeurope.ovpn  # for westeurope
 # sudo openvpn secrets/vpn-aks-australiaeast.ovpn  # for australiaeast
 
-CLUSTER=<cluster-name> RESOURCEGROUP=<resource-group> make test-e2e
+CLUSTER_NAME=<cluster-name> RESOURCEGROUP=<resource-group> make test-e2e
 ```
 
 #### az cli
@@ -210,7 +210,7 @@ After creating the VPN gateway, you can connect to it using the following comman
 
 ```bash
 sudo openvpn --config $VPN_CLIENT.ovpn
-CLUSTER=<cluster-name> RESOURCEGROUP=<resource-group> make test-e2e
+CLUSTER_NAME=<cluster-name> RESOURCEGROUP=<resource-group> make test-e2e
 ```
 
 ### Run tests to upgraded clusters