You can use the Octopus REST API or the Octopus commands below to create Octopus accounts, targets, and workers dynamically. You can make these requests in the same scripts that create your cloud infrastructure or in following steps.
Enable dynamic infrastructure
Dynamic infrastructure can be enabled when a new environment is created, or it can be enabled or disabled for existing environments.
- Navigate to Infrastructure ➜ Environments.
- Click the ... overflow menu for the environment you want to enable or disable dynamic infrastructure on and select Edit.
- Expand the Dynamic infrastructure section and tick or untick the check-box to enable or disable managing dynamic infrastructure.
- Click SAVE.
Using the Octopus REST API
Octopus comes with a REST API that can be used to register Octopus accounts and deployment targets dynamically:
- Create an AWS Account
- Create an Azure Service Principal Account
- Add an Azure Web App target
- Register a listening Tentacle
- Register a Polling Tentacle
To learn more about the things you can do with the API, take a look at our API examples section.
Available commands and syntax
Each of the resource commands is available as a PowerShell function anywhere that a step allows you to run a PowerShell script.
Only a subset of account types and deployment targets support being created dynamically using the commands listed below.
Before you can create dynamic targets in an Environment, the environment needs to be configured to allow it. See Enabling dynamic infrasturcture for more information.
All of the commands will result in an Account or Deployment Target, which will automatically be scoped to the Environment and Tenant (if the deployment is for a tenant). This cannot be overridden through the commands.
These commands are not available in the Script Console.
Creating an Azure Web App
Let's say you need to deploy an application to a different Azure Resource Group each time you deploy, one per developer or tester for example. The Resource Group, Application Service Plan, and Web App can all be created through an Azure PowerShell script step, and then the Octopus Target can be created in the same step.
# Octopus variables $environment = $OctopusParameters['Octopus.Environment.Name'] $releaseNumber = $OctopusParameters['Octopus.Release.Number'].Replace(".", "-") $deploymentId = $OctopusParameters['Octopus.Deployment.Id'] # A unique name based on the Octopus environment, release, and deployment $uniqueName = "Acme-$environment-$releaseNumber-$deploymentId" # Create resources in Azure New-AzureRmResourceGroup -Name $uniqueName -Location "WestUS" New-AzureRmAppServicePlan -Name $uniqueName -Location "WestUS" -ResourceGroupName $uniqueName -Tier Free New-AzureRmWebApp -Name $uniqueName -Location "WestUS" -AppServicePlan $uniqueName -ResourceGroupName $uniqueName # Create new target in Octopus New-OctopusAzureWebAppTarget -Name $uniqueName -AzureWebApp $uniqueName -AzureResourceGroupName $uniqueName -OctopusAccountIdOrName "my-octopus-azure-serviceprincipal-account" -OctopusRoles "acme-web"
Tearing down a test environment
Building on the Web App example, you may wish to spin up an application and then tear it down at the end of the day. By combining Recurring Deployments and a tear-down script, you can keep your cloud hosting costs down.
Using as little as two lines of PowerShell you can remove all the resources from Azure and Octopus:
Remove-AzureRmResourceGroup -Name "AzureWebAppResourceGroup" -Force Remove-OctopusTarget -targetIdOrName "AzureWebApp"
Deploying an ARM template
You can also use the above PowerShell cmdlets when deploying Azure resources using an ARM template.
Firstly, turn on Custom deployment scripts under Configure Features on your Deploy an Azure Resource Group step.
Under the Features section you will have Pre-deployment, Deployment, and Post-deployment scripts.
In the Post-deployment script section, you can access the output parameters and use those output parameters to run any of the cmdlets above.
In this section
The following topics are explained further in this section:
- Create AWS account command
- Create Azure Service Principal account command
- Create token account command
- Create username/password command
- Create Azure Web App target command
- Create Azure Service Fabric target command
- Create Azure Cloud Service target command
- Create Kubernetes Target Command
- Remove Target Command
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