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Add log analytics workspace to Azure app service – Terraform

Most times you will need to store logs for your azure resources in order to troubleshoot when things do not work as expected. Diagnostic settings for an app service can be enabled from the pane under Monitoring.

Then you should configure the diagnostic settings that will point which logs should be forwarded.

You can choose from the available categories shown below.

Lets now discover how we can enable diagnostic settings for an app service using terraform.

Create a file for example diagnostic_settings.tf and apply. The below configuration will enable all diagnostic settings categories.

resource "azurerm_monitor_diagnostic_setting" "diag_settings" {
  name               = "diag-settings"
  target_resource_id = azurerm_windows_web_app.app_service1.id
  log_analytics_workspace_id = local.log_analytics_workspace_id
  
  log {
    category = "AppServiceHTTPLogs"
    enabled  = true

    retention_policy {
      enabled = false
    }
  }

    log {
    category = "AppServiceConsoleLogs"
    enabled  = true

    retention_policy {
      enabled = false
    }
  }

    log {
    category = "AppServiceAppLogs"
    enabled  = true

    retention_policy {
      enabled = false
    }
  }

    log {
    category = "AppServiceAuditLogs"
    enabled  = true

    retention_policy {
      enabled = false
    }
  }

    log {
    category = "AppServiceIPSecAuditLogs"
    enabled  = true

    retention_policy {
      enabled = false
    }
  }

     log {
    category = "AppServicePlatformLogs"
    enabled  = true

    retention_policy {
      enabled = false
    }
  }

  metric {
    category = "AllMetrics"

    retention_policy {
      enabled = false
      days = 30
    }
  }

}

You can also perform the same using a loop and a local variable in order to minimize code and make it more readable.

Assign a new variable inside your locals.tf file.

 log_analytics_log_categories     = ["AppServiceHTTPLogs", "AppServiceConsoleLogs","AppServiceAppLogs","AppServiceAuditLogs","AppServiceIPSecAuditLogs","AppServicePlatformLogs"]

Then perform terraform apply.

resource "azurerm_monitor_diagnostic_setting" "diag_settings" {
  name               = "diag-rule"
  target_resource_id = azurerm_windows_web_app.app_service1.id
  log_analytics_workspace_id = local.log_analytics_workspace_id
  
  dynamic "log" {
    iterator = entry
    for_each = local.log_analytics_log_categories
    content {
        category = entry.value
        enabled  = true

        retention_policy {
      enabled = false
        }
    }
   
  }

  metric {
    category = "AllMetrics"

    retention_policy {
      enabled = false
      days = 30
    }
  }

}

After applying terraform all the settings will be enabled.

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Query Azure Easy Tables with Postman

There is an easy way to interact with Easy Tables on Azure when you want to test things.

 

You can use a program like postman and create a post request for your table. For example if your table is named users, you should use users after tables/

http://YOURURL.azurewebsites.net/tables/users

 

 

I was testing some requests and I was dealing an exception and I figured that the request should contain the following things.

In the headers is necessary to add Content-Type and Zumo-Api-Version.

 

 

After that you should easily send your post request by selecting raw in the body section.