04 - Logging & Monitoring (Dedicated)¶

Configure Application Insights and structured logging for your Dedicated (App Service Plan) PowerShell app.

Enable Application Insights¶

az monitor app-insights component create \
  --app func-ps-demo-ai \
  --location $LOCATION \
  --resource-group $RG

az functionapp config appsettings set \
  --name $APP_NAME \
  --resource-group $RG \
  --settings "APPLICATIONINSIGHTS_CONNECTION_STRING=<connection-string>"

| Command/Parameter | Purpose | | --- | --- | | az monitor app-insights component create | Create the Application Insights component for telemetry. | | --app | Name of the Application Insights component. | | --location | Azure region for the component. | | --resource-group | Resource group that contains the component. | | az functionapp config appsettings set | Point the function app at Application Insights. | | --name | Name of the function app. | | --resource-group | Resource group that contains the function app. | | --settings | Set the Application Insights connection string setting. |

Logging in PowerShell¶

Use the standard streams — they flow to Application Insights automatically:

param($Request, $TriggerMetadata)

Write-Information "Processing request for $($Request.Query.Name)"
Write-Warning "Name was empty; using default"
Write-Error "Downstream call failed"

Cmdlet	Severity
`Write-Information` / `Write-Host`	Information
`Write-Warning`	Warning
`Write-Error`	Error

Stream Live Logs¶

az functionapp log tail --name $APP_NAME --resource-group $RG

| Command/Parameter | Purpose | | --- | --- | | az functionapp log tail | Stream live log output from the function app. | | --name | Name of the function app. | | --resource-group | Resource group that contains the function app. |

Verification¶

Invoke the function, then query Application Insights:

traces
| where timestamp > ago(15m)
| order by timestamp desc

You should see your Write-Information messages.

Next Steps¶

Codify the whole environment as Infrastructure as Code.

Next: 05 - Infrastructure as Code