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feat: adds script to setup OIDC issuer (#1209)
Signed-off-by: Nilekh Chaudhari <[email protected]>
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| @@ -0,0 +1,151 @@ | ||
| #!/usr/bin/env bash | ||
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| # This script requires the following tools: | ||
| # - azure-cli : This is used for interacting with Azure services. | ||
| # - kind : This is required if you need a kind cluster. | ||
| # - kubectl : This is required and the context should be configured to the cluster if SKIP_CLUSTER=true. | ||
| # - openssl : This is used to generate a random string. | ||
| # - jq : This is used to process JSON data. | ||
| # | ||
| # Note: A kind cluster with the same name will be deleted if it already exists. | ||
| # Please ensure you have these tools installed and configured correctly before running this script. | ||
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| set -o errexit | ||
| set -o nounset | ||
| set -o pipefail | ||
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| SCRIPT_PATH="$(dirname "${BASH_SOURCE[0]}")" | ||
| KIND_CLUSTER_NAME="azure-workload-identity" | ||
| KIND_IMAGE_VERSION="${KIND_IMAGE_VERSION:-v1.29.0}" | ||
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| help() { | ||
| echo "Usage: $0 [LOCATION] [RESOURCE_GROUP]" | ||
| echo | ||
| echo "Arguments:" | ||
| echo " LOCATION The location for the Azure resources." | ||
| echo " RESOURCE_GROUP The resource group for the Azure resources." | ||
| echo | ||
| echo "Environment variables:" | ||
| echo " SKIP_CLUSTER If set to 'true', the script will skip the kind cluster creation. Default: false" | ||
| echo " KIND_CLUSTER_NAME The name of the kind cluster. Default: ${KIND_CLUSTER_NAME}" | ||
| echo " KIND_IMAGE_VERSION The version of the kind image. Default: ${KIND_IMAGE_VERSION}" | ||
| echo | ||
| echo "This script requires the following tools:" | ||
| echo " - azure-cli : This is used for interacting with Azure services." | ||
| echo " - kind : This is required if you need a kind cluster." | ||
| echo " - kubectl : This is required and the context should be configured to the cluster if SKIP_CLUSTER=true." | ||
| echo " - openssl : This is used to generate a random string." | ||
| echo " - jq : This is used to process JSON data." | ||
| echo | ||
| echo "Note: A kind cluster with the same name will be deleted if it already exists." | ||
| echo "Please ensure you have these tools installed and configured correctly before running this script." | ||
| } | ||
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| if [[ "$1" == "-h" || "$1" == "--help" ]]; then | ||
| help | ||
| exit 0 | ||
| fi | ||
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| LOCATION="${1}" | ||
| RESOURCE_GROUP="${2}" | ||
| AZURE_STORAGE_ACCOUNT="oidcissuer$(openssl rand -hex 4)" | ||
| AZURE_STORAGE_CONTAINER="oidc" | ||
| SERVICE_ACCOUNT_ISSUER="https://${AZURE_STORAGE_ACCOUNT}.blob.core.windows.net/${AZURE_STORAGE_CONTAINER}/" | ||
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| validate() { | ||
| # check if user is logged into azure cli | ||
| if ! az account show > /dev/null 2>&1; then | ||
| echo "Please login to Azure CLI using 'az login'" | ||
| exit 1 | ||
| fi | ||
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| # check if RESOURCE_GROUP and LOCATION are provided | ||
| if [ -z "${RESOURCE_GROUP:-}" ] || [ -z "${LOCATION:-}" ]; then | ||
| echo "RESOURCE_GROUP and LOCATION are required." | ||
| exit 1 | ||
| fi | ||
| } | ||
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| create_azure_blob_storage_account() { | ||
| if [ "$(az group exists --name "${RESOURCE_GROUP}" --output tsv)" == 'false' ]; then | ||
| echo "Creating resource group '${RESOURCE_GROUP}' in '${LOCATION}'" | ||
| az group create --name "${RESOURCE_GROUP}" --location "${LOCATION}" --output none --only-show-errors | ||
| fi | ||
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| if ! az storage account show --name "${AZURE_STORAGE_ACCOUNT}" --resource-group "${RESOURCE_GROUP}" > /dev/null 2>&1; then | ||
| echo "Creating storage account '${AZURE_STORAGE_ACCOUNT}' in '${RESOURCE_GROUP}'" | ||
| az storage account create --resource-group "${RESOURCE_GROUP}" --name "${AZURE_STORAGE_ACCOUNT}" --allow-blob-public-access true --output none --only-show-errors | ||
| fi | ||
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| if ! az storage container show --name "${AZURE_STORAGE_CONTAINER}" --account-name "${AZURE_STORAGE_ACCOUNT}" > /dev/null 2>&1; then | ||
| echo "Creating storage container '${AZURE_STORAGE_CONTAINER}' in '${AZURE_STORAGE_ACCOUNT}'" | ||
| az storage container create --name "${AZURE_STORAGE_CONTAINER}" --account-name "${AZURE_STORAGE_ACCOUNT}" --public-access blob --output none --only-show-errors | ||
| fi | ||
| } | ||
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| upload_openid_docs(){ | ||
| cat <<EOF > "${SCRIPT_PATH}/openid-configuration.json" | ||
| { | ||
| "issuer": "${SERVICE_ACCOUNT_ISSUER}", | ||
| "jwks_uri": "${SERVICE_ACCOUNT_ISSUER}openid/v1/jwks", | ||
| "response_types_supported": [ | ||
| "id_token" | ||
| ], | ||
| "subject_types_supported": [ | ||
| "public" | ||
| ], | ||
| "id_token_signing_alg_values_supported": [ | ||
| "RS256" | ||
| ] | ||
| } | ||
| EOF | ||
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| echo "Uploading openid-configuration document to '${AZURE_STORAGE_ACCOUNT}' storage account" | ||
| upload_to_blob "${AZURE_STORAGE_CONTAINER}" "${SCRIPT_PATH}/openid-configuration.json" ".well-known/openid-configuration" | ||
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| echo "Getting public signing key from the cluster" | ||
| kubectl get --raw /openid/v1/jwks | jq > "${SCRIPT_PATH}/jwks.json" | ||
| echo "Uploading jwks document to '${AZURE_STORAGE_ACCOUNT}' storage account" | ||
| upload_to_blob "${AZURE_STORAGE_CONTAINER}" "${SCRIPT_PATH}/jwks.json" "openid/v1/jwks" | ||
| } | ||
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| upload_to_blob() { | ||
| local container_name=$1 | ||
| local file_path=$2 | ||
| local blob_name=$3 | ||
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| echo "Uploading ${file_path} to '${AZURE_STORAGE_ACCOUNT}' storage account" | ||
| az storage blob upload \ | ||
| --container-name "${container_name}" \ | ||
| --file "${file_path}" \ | ||
| --name "${blob_name}" \ | ||
| --account-name "${AZURE_STORAGE_ACCOUNT}" \ | ||
| --output none --only-show-errors | ||
| } | ||
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| create_kind_cluster() { | ||
| if [ "${SKIP_CLUSTER:-}" = "true" ]; then | ||
| echo "Skipping cluster creation" | ||
| return | ||
| fi | ||
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| echo "Creating kind cluster" | ||
| kind delete cluster --name "${KIND_CLUSTER_NAME}" | ||
| cat <<EOF | kind create cluster --name ${KIND_CLUSTER_NAME} --image kindest/node:"${KIND_IMAGE_VERSION}" --config=- | ||
| kind: Cluster | ||
| apiVersion: kind.x-k8s.io/v1alpha4 | ||
| nodes: | ||
| - role: control-plane | ||
| kubeadmConfigPatches: | ||
| - | | ||
| kind: ClusterConfiguration | ||
| apiServer: | ||
| extraArgs: | ||
| service-account-issuer: ${SERVICE_ACCOUNT_ISSUER} | ||
| EOF | ||
| } | ||
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| validate "$@" | ||
| create_kind_cluster | ||
| create_azure_blob_storage_account "$@" | ||
| upload_openid_docs |