gitlab-org--gitlab-foss/doc/topics/autodevops/requirements.md

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stage: Configure
group: Configure
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# Requirements for Auto DevOps **(FREE)**

You can set up Auto DevOps for [Kubernetes](#auto-devops-requirements-for-kubernetes),
[Amazon Elastic Container Service (ECS)](#auto-devops-requirements-for-amazon-ecs),
or [Amazon Cloud Compute](#auto-devops-requirements-for-amazon-ecs).
For more information about Auto DevOps, see [the main Auto DevOps page](index.md)
or the [quick start guide](quick_start_guide.md).

## Auto DevOps requirements for Kubernetes

To make full use of Auto DevOps with Kubernetes, you need:

- **Kubernetes** (for [Auto Review Apps](stages.md#auto-review-apps),
  [Auto Deploy](stages.md#auto-deploy), and [Auto Monitoring](stages.md#auto-monitoring))

  To enable deployments, you need:

  1. A [Kubernetes 1.12+ cluster](../../user/project/clusters/index.md) for your
     project. The easiest way is to create a
     [new cluster using the GitLab UI](../../user/project/clusters/add_remove_clusters.md#create-new-cluster).
     For Kubernetes 1.16+ clusters, you must perform additional configuration for
     [Auto Deploy for Kubernetes 1.16+](stages.md#kubernetes-116).
  1. For external HTTP traffic, an Ingress controller is required. For regular
     deployments, any Ingress controller should work, but as of GitLab 14.0,
     [canary deployments](../../user/project/canary_deployments.md) require
     NGINX Ingress. You can deploy the NGINX Ingress controller to your
     Kubernetes cluster either through the GitLab [Cluster management project template](../../user/clusters/management_project_template.md)
     or manually by using the [`ingress-nginx`](https://github.com/kubernetes/ingress-nginx/tree/master/charts/ingress-nginx)
     Helm chart.

     NOTE:
     For metrics to appear when using the [Prometheus cluster integration](../../user/clusters/integrations.md#prometheus-cluster-integration), you must [enable Prometheus metrics](https://github.com/kubernetes/ingress-nginx/tree/master/charts/ingress-nginx#prometheus-metrics).

     When deploying [using custom charts](customize.md#custom-helm-chart), you must also
     [annotate](https://kubernetes.io/docs/concepts/overview/working-with-objects/annotations/)
     the Ingress manifest to be scraped by Prometheus using
     `prometheus.io/scrape: "true"` and `prometheus.io/port: "10254"`.

     NOTE:
     If your cluster is installed on bare metal, see
     [Auto DevOps Requirements for bare metal](#auto-devops-requirements-for-bare-metal).

- **Base domain** (for [Auto Review Apps](stages.md#auto-review-apps),
  [Auto Deploy](stages.md#auto-deploy), and [Auto Monitoring](stages.md#auto-monitoring))

  You must [specify the Auto DevOps base domain](index.md#auto-devops-base-domain),
  which all of your Auto DevOps applications use. This domain must be configured
  with wildcard DNS.

- **GitLab Runner** (for all stages)

  Your runner must be configured to run Docker, usually with either the
  [Docker](https://docs.gitlab.com/runner/executors/docker.html)
  or [Kubernetes](https://docs.gitlab.com/runner/executors/kubernetes.html) executors, with
  [privileged mode enabled](https://docs.gitlab.com/runner/executors/docker.html#use-docker-in-docker-with-privileged-mode).
  The runners don't need to be installed in the Kubernetes cluster, but the
  Kubernetes executor is easy to use and automatically autoscales.
  You can configure Docker-based runners to autoscale as well, using
  [Docker Machine](https://docs.gitlab.com/runner/executors/docker_machine.html).

  Runners should be registered as [shared runners](../../ci/runners/runners_scope.md#shared-runners)
  for the entire GitLab instance, or [specific runners](../../ci/runners/runners_scope.md#specific-runners)
  that are assigned to specific projects.

- **Prometheus** (for [Auto Monitoring](stages.md#auto-monitoring))

  To enable Auto Monitoring, you need Prometheus installed either inside or
  outside your cluster, and configured to scrape your Kubernetes cluster.
  If you've configured the GitLab integration with Kubernetes, you can
  instruct GitLab to query an in-cluster Prometheus by enabling
  the [Prometheus cluster integration](../../user/clusters/integrations.md#prometheus-cluster-integration).

  The [Prometheus integration](../../user/project/integrations/prometheus.md)
  integration must be activated for the project, or activated at the group or instance level.
  Learn more about [Project integration management](../../user/admin_area/settings/project_integration_management.md).

  To get response metrics (in addition to system metrics), you must
  [configure Prometheus to monitor NGINX](../../user/project/integrations/prometheus_library/nginx_ingress.md#configuring-nginx-ingress-monitoring).

- **cert-manager** (optional, for TLS/HTTPS)

  To enable HTTPS endpoints for your application, you can [install cert-manager](https://cert-manager.io/docs/installation/kubernetes/),
  a native Kubernetes certificate management controller that helps with issuing
  certificates. Installing cert-manager on your cluster issues a
  [Let's Encrypt](https://letsencrypt.org/) certificate and ensures the
  certificates are valid and up-to-date.

If you don't have Kubernetes or Prometheus configured, then
[Auto Review Apps](stages.md#auto-review-apps),
[Auto Deploy](stages.md#auto-deploy), and [Auto Monitoring](stages.md#auto-monitoring)
are skipped.

After all requirements are met, you can [enable Auto DevOps](index.md#enable-or-disable-auto-devops).

## Auto DevOps requirements for Amazon ECS

> [Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/208132) in GitLab 13.0.

You can choose to target [AWS ECS](../../ci/cloud_deployment/index.md) as a deployment platform instead of using Kubernetes.

To get started on Auto DevOps to AWS ECS, you must add a specific CI/CD variable.
To do so, follow these steps:

1. In your project, go to **Settings > CI/CD** and expand the **Variables**
   section.

1. Specify which AWS platform to target during the Auto DevOps deployment
   by adding the `AUTO_DEVOPS_PLATFORM_TARGET` variable with one of the following values:
   - `FARGATE` if the service you're targeting must be of launch type FARGATE.
   - `ECS` if you're not enforcing any launch type check when deploying to ECS.

When you trigger a pipeline, if you have Auto DevOps enabled and if you have correctly
[entered AWS credentials as variables](../../ci/cloud_deployment/index.md#deploy-your-application-to-the-aws-elastic-container-service-ecs),
your application is deployed to AWS ECS.

If you have both a valid `AUTO_DEVOPS_PLATFORM_TARGET` variable and a Kubernetes cluster tied to your project,
only the deployment to Kubernetes runs.

WARNING:
Setting the `AUTO_DEVOPS_PLATFORM_TARGET` variable to `ECS` triggers jobs
defined in the [`Jobs/Deploy/ECS.gitlab-ci.yml` template](https://gitlab.com/gitlab-org/gitlab/-/blob/master/lib/gitlab/ci/templates/Jobs/Deploy/ECS.gitlab-ci.yml).
However, it's not recommended to [include](../../ci/yaml/index.md#includetemplate)
it on its own. This template is designed to be used with Auto DevOps only. It may change
unexpectedly causing your pipeline to fail if included on its own. Also, the job
names within this template may also change. Do not override these jobs' names in your
own pipeline, as the override stops working when the name changes.

## Auto DevOps requirements for Amazon EC2

[Introduced](https://gitlab.com/gitlab-org/gitlab/-/issues/216008) in GitLab 13.6.

You can target [AWS EC2](../../ci/cloud_deployment/index.md)
as a deployment platform instead of Kubernetes. To use Auto DevOps with AWS EC2, you must add a
specific CI/CD variable.

For more details, see [Custom build job for Auto DevOps](../../ci/cloud_deployment/index.md#custom-build-job-for-auto-devops)
for deployments to AWS EC2.

## Auto DevOps requirements for bare metal

According to the [Kubernetes Ingress-NGINX docs](https://kubernetes.github.io/ingress-nginx/deploy/baremetal/):

> In traditional cloud environments, where network load balancers are available on-demand,
a single Kubernetes manifest suffices to provide a single point of contact to the NGINX Ingress
controller to external clients and, indirectly, to any application running inside the cluster.
Bare-metal environments lack this commodity, requiring a slightly different setup to offer the
same kind of access to external consumers.

The docs linked above explain the issue and present possible solutions, for example:

- Through [MetalLB](https://github.com/metallb/metallb).
- Through [PorterLB](https://github.com/kubesphere/porterlb).