Azure Devops

• Lifecycle
  • 5 core Azure devops services
• Azure Bicep
• Azure Resource manager
• Arm Templates
• Install Azure powershell module
• Bicep
  • String Intrepolation
  • Arrays
  • Output to screen
  • Parameters
  • Unique string
  • Ternary operator
  • VSCode Bicep extension

Lifecycle

• 
• Dev Steps
  • plan
  • code
  • build
  • test
• Ops steps
  • release
  • deploy
  • operate
  • monitor

5 core Azure devops services

• 

Azure Bicep

• step up from just basic Arm templates

Azure Resource manager

• Azure resource manager uses Azure AD for authentication so it doesn’t matter if you use the Azure portal, cli or azure bicep it is all secure

• 

• environments typically have a production and dev subscription
• along with different resource groups that are separated by their layer like the db layer, or the application server layer

• 

• we can create a resource just like in the gui except using a arm template json
• 

Arm Templates

• Benefits
  • IAC
  • (Governance as code) Policy and roles as code
  • Repeatable results
  • Orchestration
  • Built-in validation

Install Azure powershell module

• Install-module -name Az -AllowClobber

Bicep

String Intrepolation

• use dollarsign curly braces inside a string to use string interpolation

var prefix = 'prod'
var storageName = '${prefix}teststorage01'

Arrays

• Arrays are simple in bicep they are just

// use commas if they are on the same line
var x = [
  1, 2, 3
]

// don't use commas if they are on different lines
var y = [
  1
  2
  3
]

This will loop through the 3 different regions and create a storage account in each region

This also gets the index from each iteration by using (region, i). You can name i anything you want like index

var regions = [
  'centralus', 'southeastasia', 'northeurope' 
]

// location and storage account name
param location string = resourceGroup().location
var uString = uniqueString(resourceGroup().id)
var storageAccountName = 'toylaunch${uString}'

resource storageaccount 'Microsoft.Storage/storageAccounts@2021-02-01' = [for (region,i) in regions: {
  name: '${storageAccountName}${i}'
  kind: 'StorageV2'
  location: region
  sku: {
    name: 'Premium_LRS'
  }
  properties: {
    accessTier: 'Cool'
  }
}]

Output to screen

• you can output the to screen when executing a bicep file with the output keyword

  // output
  output location string = 'Hello world'

DeploymentName          : param
ResourceGroupName       : Test
ProvisioningState       : Succeeded
Timestamp               : 12/30/2023 10:02:35 PM
Mode                    : Incremental
TemplateLink            : 
Parameters              : 
Outputs                 : 
                          Name             Type                       Value     
                          ===============  =========================  ==========
                          location         String                     "Hello world"
                          
DeploymentDebugLogLevel : 

Parameters

• you can specify parameters to your bicep code like this

@allowed([
  'john', 'briana', 'tresten'
])
param location string

PS /home/tpool/Playground/PowershellBicepExamples/Basic_Examples> New-AzResourceGroupDeployment -TemplateParameterObject @{location='tresten'} -TemplateFile ./param.bicep -ResourceGroupName Test

DeploymentName          : param
ResourceGroupName       : Test
ProvisioningState       : Succeeded
Timestamp               : 12/30/2023 10:04:06 PM
Mode                    : Incremental
TemplateLink            : 
Parameters              : 
                          Name             Type                       Value     
                          ===============  =========================  ==========
                          location         String                     "tresten" 
                          
Outputs                 : 
DeploymentDebugLogLevel : 

However if we passed something that isn’t in the @allowed array we get the following error

PS /home/tpool/Playground/PowershellBicepExamples/Basic_Examples> New-AzResourceGroupDeployment -TemplateParameterObject @{location='NOra'} -TemplateFile ./param.bicep -ResourceGroupName Test      

New-AzResourceGroupDeployment: 4:05:19 PM - Error: Code=InvalidTemplate; Message=Deployment template validation failed: 'The provided value for the template parameter 'location' is not valid. The value 'NOra' is not part of the allowed value(s): 'john,briana,tresten'.'.
New-AzResourceGroupDeployment: The deployment validation failed

Unique string

• you may sometimes need to generate a unique string that is the same for resources in the same resource group but different when run in a different resource group

var unique_id = uniqueString(resourceGroup().id)

Ternary operator

• bicep has a ternary operator we can take advantage of

var storageAccountSkuName = (environmentType == 'prod') ? 'Standard_GRS' : 'Standard_LRS'
var appServicePlanSkuName = (environmentType == 'prod') ? 'P2V3' : 'F1'

VSCode Bicep extension

• to get resource template snippets use the keyword res- and it will suggest some resource such as this

• 

• to add the required properties for a resource you can select required-properties
•