philbroderick/containerappsdemo

EAUG CONTAINER APPS

This repository includes the code for my Container Apps demo at Edinburgh Azure User Group meetup #23 (27th September).

The talk covers deploying Container Apps using bicep, as well as creating a self-hosted Azure DevOps build agent that can be autoscaled based on the queue length of the given agent pool.

Running locally

⚠️ To run locally, ensure you have the Azure CLI installed, and you are logged into Azure via the az login command.

⚠️ This assumes you have an Azure DevOps organization. This will show you through creating an Agent Pool however.

Steps

1. Start by creating a resource group for all resources to reside in:

   az group create -n <RG_NAME> -l <LOCATION>

2. Create the container registry (ensure you are in /deploy directory), providing any parameters required:

   az deployment group create -g <RG_NAME> --template-file .\container-registry.bicep

3. Create the log analytics workspace:

   az deployment group create -g <RG_NAME> --template-file .\log-analytics.bicep

4. Create the Container Apps Environment:

   Retrieve logAnalyticsCustomerId and logAnalyticsPrimaryKey from previous output and add to container-app-env-parameters.json

   az deployment group create -g <RG_NAME> --template-file .\container-app-env.bicep --parameters container-app-env-parameters.json

5. Build and deploy Azure DevOps self-hosted docker agent to Container registry:

       cd ../ado-agent

   Build image:

      docker build -t ado-agent:latest .

   Tag/Push to ACR:

      docker tag ado-agent:latest <ACR_LOGIN_SERVER>/ado-agent:latest
      az acr login -n <ACR_NAME>
      docker push <ACR_LOGIN_SERVER>/ado-agent:latest

6. Create Azure DevOps Agent Pool:

   • Navigate to Organization Settings > Agent pools > Add pool in Azure DevOps
   • Select self-hosted for Pool type
   • Provide a name for the Agent pool and click Create
   • Obtain the poolId by selecting the Pool and copying the poolId found in the URL, it should look similar to https://dev.azure.com/<ORG_NAME>/_settings/agentpools?poolId=<POOL_ID>&view=jobs

7. Create Personal Access Token:

   • A Personal Access token is required to read/create new agents dynamically based on autoscale triggers. The following link demonstrates how to create one
   • For scope, select Agent Pools Read & manage. This may require you to click show all scopes at the bottom of the current panel.

8. Create the Self-Hosted Agent Container App:

   Retrieve containerAppEnvId, containerRegistry and registryUsername from previous steps and add to ado-agent-container-app-parameters.json, as well as changing name, adoUrl, adoAgentPool as appropriate

   az deployment group create -g <RG_NAME> --template-file .\ado-agent-container-app.bicep --parameters ado-agent-container-app-parameters.json

   When prompted, enter registryPassword, which can be found from the Container Registry in Azure, and adoToken, which is the Personal Access Token created in the previous step.