[casting] Azure Container Apps with Terraform

[Nageshbansal]

Deployment platform

aca

Deployment mode

containerapp

Deployment flavor

terraform

Why this Casting?

Azure Container Apps users currently follow a long manual az CLI guide with 6 YAML files and multiple config uploads. A Foundry casting would generate the entire Terraform module including the Azure VM for TelemetryStore/TelemetryKeeper and Container Apps for stateless components (SigNoz, Ingester, Migrator). Benefits platform engineers deploying SigNoz on Azure who want reproducible, version-controlled infrastructure.

Proposed Casting configuration

apiVersion: v1alpha1
  metadata:
    name: signoz
    annotations:
      foundry.signoz.io/aca/subscription-id: <subscription-id>
      foundry.signoz.io/aca/resource-group: <resource-group>
      foundry.signoz.io/aca/location: eastus
      foundry.signoz.io/aca/storage-account: <storage-account-name>
  spec:
    deployment:
      platform: aca
      mode: containerapp
      flavor: terraform

Expected Pours structure

pours/deployment/
    main.tf.json
    variables.tf.json
    terraform.tfvars.json
    module/
      main.tf.json
      variables.tf.json
      outputs.tf.json
      telemetrykeeper.tf.json
      telemetrystore.tf.json
      telemetrystore_migrator.tf.json
      metastore.tf.json
      signoz.tf.json
      ingester.tf.json
      telemetrykeeper/
        clickhousekeeper/
          keeper-0.yaml
      telemetrystore/
        clickhouse/
          config.yaml
          functions.yaml
      ingester/
        ingester.yaml
        opamp.yaml

Tooling requirements

• Terraform for deploying
• Azure CLI (az) for authentication

References

• Current manual ACA doc: https://signoz.io/docs/install/azure-container-apps
• Existing ECS Terraform casting for pattern reference:
  • https://github.com/SigNoz/foundry/tree/main/docs/examples/ecs/ec2/terraform
  • https://github.com/SigNoz/foundry/tree/main/internal/casting/ecsterraformcasting
• ACA Terraform provider: https://registry.terraform.io/providers/hashicorp/azurerm/latest/docs/resources/container_app

Additional context

ACA's storage options (EmptyDir, Azure Files SMB) aren't suitable for ClickHouse data workloads. The Terraform module should provision an Azure VM with managed disk for TelemetryStore/TelemeteryKeeper, while using Container Apps for stateless components (SigNoz, Ingester, Migrator). This hybrid approach gives persistence without leaving ACA entirely.