Small improvements in ci-entrypoint script

Makefile

@@ -447,7 +447,7 @@ create-management-cluster: $(KUSTOMIZE) $(ENVSUBST)
 	$(MAKE) kind-create
 
 	# Install cert manager and wait for availability
-	kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.0.1/cert-manager.yaml
+	kubectl apply -f https://github.com/jetstack/cert-manager/releases/download/v1.1.0/cert-manager.yaml
 	kubectl wait --for=condition=Available --timeout=5m -n cert-manager deployment/cert-manager
 	kubectl wait --for=condition=Available --timeout=5m -n cert-manager deployment/cert-manager-cainjector
 	kubectl wait --for=condition=Available --timeout=5m -n cert-manager deployment/cert-manager-webhook

hack/ensure-acr-cleanup-schedule.sh

@@ -18,10 +18,14 @@ set -o errexit
 set -o nounset
 set -o pipefail
 
-e2e_registry="ci-e2e/cluster-api-azure-controller-amd64"
-az acr task create --name midnight_capz_ci_e2e_purge --cmd "acr purge --filter ${e2e_registry}:.* --ago 1d --untagged" \
-  --schedule "0 0 * * *" --registry capzci --context /dev/null
+repos=$(az acr repository list -o tsv --name capzci)
+
+for repo in $repos
+do
+  filters+="--filter $repo:.* "
+done
+
+PURGE_CMD="acr purge $filters --ago 1d --untagged"
 
-registry="cluster-api-azure-controller-amd64"
-az acr task create --name midnight_capz_purge --cmd "acr purge --filter ${registry}:.* --ago 1d --untagged" \
+az acr task create --name midnight_capz_purge --cmd "${PURGE_CMD}" \
   --schedule "0 0 * * *" --registry capzci --context /dev/null

hack/ensure-acr-login.sh

@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+# Copyright 2021 The Kubernetes Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -o errexit
+set -o nounset
+set -o pipefail
+
+REPO_ROOT=$(dirname "${BASH_SOURCE[0]}")/..
+cd "${REPO_ROOT}" || exit 1
+
+if [[ "${REGISTRY:-}" =~ capzci\.azurecr\.io ]]; then
+    # if we are using the prow Azure Container Registry, login.
+    ${REPO_ROOT}/hack/ensure-azcli.sh
+    : "${AZURE_SUBSCRIPTION_ID:?Environment variable empty or not defined.}"
+    az account set -s "${AZURE_SUBSCRIPTION_ID}"
+    az acr login --name capzci
+fi

scripts/ci-conformance.sh

@@ -55,15 +55,8 @@ export LOCAL_ONLY=${LOCAL_ONLY:-"false"}
 if [[ "${LOCAL_ONLY}" == "true" ]]; then
   export REGISTRY="localhost:5000/ci-e2e"
 else
-  export REGISTRY=${REGISTRY:-"capzci.azurecr.io/ci-e2e"}
-
-  if [[ "${REGISTRY}" =~ azurecr\.io ]]; then
-    # if we are using Azure Container Registry, login
-    ${REPO_ROOT}/hack/ensure-azcli.sh
-    az account set -s "${AZURE_SUBSCRIPTION_ID}"
-    az acr login --name capzci
-  fi
-fi
+  : "${REGISTRY:?Environment variable empty or not defined.}"
+  ${REPO_ROOT}/hack/ensure-acr-login.sh
 
 defaultTag=$(date -u '+%Y%m%d%H%M%S')
 export TAG="${defaultTag:-dev}"

scripts/ci-e2e.sh

@@ -53,14 +53,8 @@ get_random_region() {
 export LOCAL_ONLY=${LOCAL_ONLY:-"true"}
 
 if [[ "${LOCAL_ONLY}" == "false" ]]; then
-  export REGISTRY=${REGISTRY:-"capzci.azurecr.io/ci-e2e"}
-
-  if [[ "${REGISTRY}" =~ azurecr\.io ]]; then
-    # if we are using Azure Container Registry, login
-    ${REPO_ROOT}/hack/ensure-azcli.sh
-    az account set -s "${AZURE_SUBSCRIPTION_ID}"
-    az acr login --name capzci
-  fi
+  : "${REGISTRY:?Environment variable empty or not defined.}"
+  ${REPO_ROOT}/hack/ensure-acr-login.sh
 else
   export REGISTRY="localhost:5000/ci-e2e"
 fi

scripts/ci-entrypoint.sh

@@ -38,7 +38,15 @@ source "${REPO_ROOT}/hack/ensure-tags.sh"
 # shellcheck source=../hack/parse-prow-creds.sh
 source "${REPO_ROOT}/hack/parse-prow-creds.sh"
 
+get_random_region() {
+    local REGIONS=("northcentralus" "centralus" "canadacentral" "eastus" "eastus2" "westus2" "westeurope" "uksouth" "northeurope" "francecentral")
+    echo "${REGIONS[${RANDOM} % ${#REGIONS[@]}]}"
+}
+
 create_cluster() {
+    # setup REGISTRY for custom images.
+    : "${REGISTRY:?Environment variable empty or not defined.}"
+    ${REPO_ROOT}/hack/ensure-acr-login.sh
     # export cluster template which contains the manifests needed for creating the Azure cluster to run the tests
     if [[ -n ${CI_VERSION:-} || -n ${USE_CI_ARTIFACTS:-} ]]; then
         KUBERNETES_BRANCH="$(cd $(go env GOPATH)/src/k8s.io/kubernetes && git rev-parse --abbrev-ref HEAD)"
@@ -60,10 +68,10 @@ create_cluster() {
 
     export CLUSTER_NAME="capz-$(head /dev/urandom | LC_ALL=C tr -dc a-z0-9 | head -c 6 ; echo '')"
     export AZURE_RESOURCE_GROUP="${CLUSTER_NAME}"
+    export AZURE_LOCATION="${AZURE_LOCATION:-$(get_random_region)}"
     # Need a cluster with at least 2 nodes
     export CONTROL_PLANE_MACHINE_COUNT="${CONTROL_PLANE_MACHINE_COUNT:-1}"
     export WORKER_MACHINE_COUNT="${WORKER_MACHINE_COUNT:-2}"
-    export REGISTRY="${REGISTRY:-capz}"
     export EXP_CLUSTER_RESOURCE_SET="true"
     ${REPO_ROOT}/hack/create-dev-cluster.sh
 }