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Azure Bicep Deployment Orchestration

Project description

lolite

lolite is an Azure Bicep orchestration tool. The main goal is to separate environment configuration from templates. This is inspired by the AWS Sceptre tool.

NOTE: lolite is still very much a WIP.

There is a getting started guide on my blog here. This is meant to be complementry to the info in this Readme.

deploy with github actions

lolite sample project

lolite Slack, ask questions and get help here.

Goals

  • Separation of Bicep configuration and templates
  • Deploy individual configurations
  • Bulk deploy at different hierarchies: Resource Group, Subscription or Account
  • Automated Resource Group Creation
  • Automated deployment hierarchy based on output bindings.

Not Goals

  • Support for anything other than Bicep on Azure
  • Support for multiple Azure tenancies

Requirements

  • Python 3.8+
  • Azure CLI
  • Azure Bicep CLI

Note: tested on MacOS, Linux (Ubuntu) and WSL under Windows.

Installing

You can install lolite from pypi using: pip install lolite==0.0.1

Building From Source

  • Clone this repo
  • Build the project python3 -m build
  • Install pip3 install dist/lolite-0.0.1-py3-none-any.whl

Assumptions

  • You have a single account with multiple subscriptions
  • Each subscription has a unique name
  • All deployments are --mode Incremental

Possible Future Features

  • Parallel deploys
  • configurable deploy mode

lolite project structure

A lolite project is structured in the following way:

- root/
    - bicep/
        - storage_account_and_container.bicep
    - configuration/
        - Subscription_1/
            - Resource_Group_1/
                - location.yaml
                - storage_account_and_container.yaml
                - config_2.yaml
            - Resource_Group_2/
                - location.yaml
                - config_1.yaml
        - Subscription_2/
            - Resource_Group_1/
                - location.yaml
                - config_1.yaml

Given the example structure above a few important things to note:

  • bicep - this folder contains all of your bicep templates.
  • configuration - this contains your configuration for deployments, the hierarchy is important.
  • Subscription_1 - This is the root level under configuration. Subscription_1 matched exactly the name of a subscription in Azure.
  • Resource_Group_1 - At the root level of a given subscription. This sets the resource group for a deployment within that subscription.
  • location.yaml - A special configuration file to set the location of the resource group.
  • storage_account_and_container.yaml - This is a deployable configuration. It will link to a template in the bicep folder and contain the required parameters.

Sample bicep and configuration folders are included in the root of this repo.

Bicep files

This is just a standard bicep template, for example when creating a storage account and container you might have a file such as storage_account_and_container.yaml that looks something like:

param location string
param storageName string
param containerName string
param skuName string

resource StorageAccount 'Microsoft.Storage/storageAccounts@2019-06-01' = {
  name: storageName
  location: location
  kind: 'Storage'
  sku: {
    name: skuName
  }
}

resource StorageContainer 'Microsoft.Storage/storageAccounts/blobServices/containers@2019-06-01' = {
  name: '${StorageAccount.name}/default/${containerName}'
  properties: {
    publicAccess: 'None'
  }
}

output storageLocation string = StorageAccount.properties.primaryLocation

Configuration files

Given the configuration file

configuration/Subscription_1/Resource_Group_1/storage_account_and_container.yaml: This is broken down into sections as such:

<discarded>/<Subscription>/<resource_group>/<config_to_deploy>

in this case storage_account_and_container.yaml might look like the following:

---
bicep_path: storage_account.bicep
scope: resource_group

pre_hooks:
  PythonScript: scripts/test_python_hook.py

params:
  storageName: storagetestlolit1
  containerName: blog
  skuName: Standard_LRS
  location: Ref:Subscription_1.Resource_Group_1.config2:storageLocation

post_hooks:
  BashScript: scripts/test_bash_hook.sh
  

The bicep_path here points to the template in the bicep/ folder of the project. This bicep template is then deployed using the provided params block to the subscription and resource group determined by the configuration files path.

scope is an optional parameter, where the default value is not specified is resource_group. The other valid value is subscription. This sets the deployment at a subscription scope rather than a resource group scope. This is particularly useful for setting up Azure Policy.

pre_hooks and post_hooks allow you to specify external scripts that should be run before or after the bicep deplloyment respectivly. If A hook returns a non-success code deployment will be terminated. At current there is only support for Python3 scripts and Bash scripts. pre_commit and post_commit Hooks are both optional optional.

Referencing Other Deployment Outputs

Any parameter in the config file prefixes with Ref: is a reference to an output from a different deployment. The format for referencing an output from a different deployment is: <Ref>:<deployment_path>:<output_name> where the deployent_path replaces / with ..

When referencing the output from a different deployment lolite will first check if the dependent deployment exists then deploy it if required. If the dependent deployment does exist lolite will look up the output value and use it for the deployment. deployment hierarchy can be of an arbitrary depth and span across the whole project.

If the resource group for a deployment does not exist lolite will create it for you using the location specified by the location.yaml file.

location.yaml

This is a super simple file that is required for every resource group. It tells lolite what location to create the resource group in if it does not exist. Each resource deployed into that resource group inherits the location. An example of a location.yaml:

---
location: australiaeast

Usage

lolite is designed to be easy to use and allow scoped control of deployments.

Deploying a single configuration

From the root folder of your repository run the following command:

lolite deploy Subscription_1/Resource_Group_1/storage_account_and_container.yaml

This will deploy a single configuration / template

Deploying at resource group scope

From the root folder of your repository run the following command:

lolite deploy-resource-group Subscription_1/Resource_Group_1

This will deploy every configuration file under that resource group

Deploying at subscription scope

From the root folder of your repository run the following command:

lolite deploy-subscription Subscription_1

This will deploy each configuration file for each resource group in the specified subscription

Deploying at account scope

From the root folder of your repository run the following command:

lolite deploy-account

This will deploy every configuration file in the project to the appropriate subscriptions and resource groups

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