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| stage | group | info |
|---|---|---|
| Configure | Configure | To determine the technical writer assigned to the Stage/Group associated with this page, see https://about.gitlab.com/handbook/engineering/ux/technical-writing/#assignments |
Multiple Kubernetes clusters for a single project
- Introduced in GitLab Premium 10.3
- Moved to GitLab Free in 13.2.
You can associate more than one Kubernetes cluster to your project. That way you can have different clusters for different environments, like development, staging, production, and so on. Add another cluster, like you did the first time, and make sure to set an environment scope that differentiates the new cluster from the rest.
Setting the environment scope
When adding more than one Kubernetes cluster to your project, you need to differentiate them with an environment scope. The environment scope associates clusters with environments similar to how the environment-specific CI/CD variables work.
The default environment scope is *, which means all jobs, regardless of their
environment, use that cluster. Each scope can be used only by a single cluster
in a project, and a validation error occurs if otherwise. Also, jobs that don't
have an environment keyword set can't access any cluster.
For example, let's say the following Kubernetes clusters exist in a project:
| Cluster | Environment scope |
|---|---|
| Development | * |
| Production | production |
And the following environments are set in
.gitlab-ci.yml:
stages:
- test
- deploy
test:
stage: test
script: sh test
deploy to staging:
stage: deploy
script: make deploy
environment:
name: staging
url: https://staging.example.com/
deploy to production:
stage: deploy
script: make deploy
environment:
name: production
url: https://example.com/
The results:
- The Development cluster details are available in the
deploy to stagingjob. - The production cluster details are available in the
deploy to productionjob. - No cluster details are available in the
testjob because it doesn't define any environment.