- Auto deploy
Introduced in GitLab 8.15. Auto deploy is an experimental feature and is not recommended for Production use at this time. As of GitLab 9.1, access to the container registry is only available while the Pipeline is running. Restarting a pod, scaling a service, or other actions which require on-going access will fail. On-going secure access is planned for a subsequent release.
Auto deploy is an easy way to configure GitLab CI for the deployment of your
application. GitLab Community maintains a list of
templates for various infrastructure providers and deployment scripts
powering them. These scripts are responsible for packaging your application,
setting up the infrastructure and spinning up necessary services (for
example a database).
You can use project services to store credentials to your infrastructure provider and they will be available during the deployment.
The list of supported auto deploy templates is available in the gitlab-ci-yml project.
- Enable a deployment project service to store your credentials. For example, if you want to deploy to OpenShift you have to enable Kubernetes service.
- Configure GitLab Runner to use Docker or Kubernetes executor with privileged mode enabled.
- Navigate to the "Project" tab and click "Set up auto deploy" button.
- Select a template.
- Commit your changes and create a merge request.
- Test your deployment configuration using a Review App that was created automatically for you.
The Autodeploy templates are based on the kubernetes-deploy
project which is used to simplify the deployment process to Kubernetes by
destroy commands which you can
use in your
.gitlab-ci.yml as-is. It uses Heroku'ish build packs to do some
of the work, plus some of GitLab's own tools to package it all up. For your
convenience, a Docker image is also provided.
A simple example would be the deployment of Nginx on Kubernetes.
nginx-deployment.yaml file in your project with contents:
apiVersion: extensions/v1beta1 kind: Deployment metadata: name: __CI_ENVIRONMENT_SLUG__ labels: app: __CI_ENVIRONMENT_SLUG__ track: stable spec: replicas: 3 template: metadata: labels: app: __CI_ENVIRONMENT_SLUG__ track: stable spec: containers: - name: nginx image: nginx:1.7.9 ports: - containerPort: 80
The important part is where we set up
app: __CI_ENVIRONMENT_SLUG__. As you'll
see later this is replaced by the [
CI_ENVIRONMENT_SLUG env variable][variables].
.gitlab-ci.yml would be:
image: registry.gitlab.com/gitlab-examples/kubernetes-deploy stages: - deploy kubernetes deploy: stage: deploy environment: name: production script: - echo "$KUBE_CA_PEM" > kube_ca.pem - cat kube_ca.pem - kubectl config set-cluster default-cluster --server=$KUBE_URL --certificate-authority="$(pwd)/kube_ca.pem" - kubectl config set-credentials default-admin --token=$KUBE_TOKEN - kubectl config set-context default-system --cluster=default-cluster --user=default-admin --namespace $KUBE_NAMESPACE - kubectl config use-context default-system - sed -i "s/__CI_ENVIRONMENT_SLUG__/$CI_ENVIRONMENT_SLUG/" nginx-deployment.yaml - cat nginx-deployment.yaml - kubectl cluster-info - kubectl get deployments -l app=$CI_ENVIRONMENT_SLUG - kubectl create -f nginx-deployment.yaml || kubectl replace -f nginx-deployment.yaml
Notice that we use a couple of Kubernetes environment variables to configure
the Kubernetes cluster. These are exposed from the
The most important one is the
$KUBE_NAMESPACE which should be unique for
Next, we replace
__CI_ENVIRONMENT_SLUG__ with the content of the
CI_ENVIRONMENT_SLUG variable, so that the
app label has the correct value.
Finally, the Nginx pod is created from the definition of the
Experimental support introduced in GitLab 9.1.
When a project has been marked as private, GitLab's Container Registry requires authentication when downloading containers. Auto deploy will automatically provide the required authentication information to Kubernetes, allowing temporary access to the registry. Authentication credentials will be valid while the pipeline is running, allowing for a successful initial deployment.
After the pipeline completes, Kubernetes will no longer be able to access the container registry. Restarting a pod, scaling a service, or other actions which require on-going access to the registry will fail. On-going secure access is planned for a subsequent release.
Experimental support introduced in GitLab 9.1.
In order to support applications that require a database, PostgreSQL is provisioned by default. Credentials to access the database are preconfigured, but can be customized by setting the associated variables. These credentials can be used for defining a
DATABASE_URL of the format:
postgres://user:password@postgres-host:postgres-port/postgres-database. It is important to note that the database itself is temporary, and contents will be not be saved.
PostgreSQL provisioning can be disabled by setting the variable
DISABLE_POSTGRES: "yes": disable automatic deployment of PostgreSQL
POSTGRES_USER: "my-user": use custom username for PostgreSQL
POSTGRES_PASSWORD: "password": use custom password for PostgreSQL
POSTGRES_DB: "my database": use custom database name for PostgreSQL