The zuul operator is a container application that manages a zuul service described by a high level description (named CR). Its goal is to create the kubernetes resources and to perform the runtime operations.
To describe the kubernetes resources such as Deployment and Service, the zuul operator uses the Dhall language to convert the CR input into the kubernetes resources.
To apply and manage the resources, the zuul operator uses Ansible through the operator-framework to execute the roles/zuul when a Zuul CR is requested.
The following sections explain how to evaluate the Dhall configuration and the Ansible task locally, outside of a kubernetes pod. This simplifies the development and contribution process.
yaml-to-dhall tool by following this tutorial:
Or use the zuul-operator image:
CR="podman" alias dhall-to-yaml="$CR run --rm --entrypoint dhall-to-yaml -i docker.io/zuul/zuul-operator" alias yaml-to-dhall="$CR run --rm --entrypoint yaml-to-dhall -i docker.io/zuul/zuul-operator"
Evaluate the dhall expression manually
First you need to convert a CR spec to a dhall record, for example using the test file
INPUT=$(yaml-to-dhall "(./conf/zuul/input.dhall).Input.Type" < playbooks/files/cr_spec.yaml)
Then you can evaluate the resources function, for example to get the scheduler service:
dhall-to-yaml --explain <<< "(./conf/zuul/resources.dhall ($INPUT)).Components.Zuul.Scheduler"
Or get all the kubernetes resources:
dhall-to-yaml <<< "(./conf/zuul/resources.dhall ($INPUT)).List"
Run the ansible roles locally
Given a working
~/.kube/config context, you can execute the Ansible roles directly using:
export ANSIBLE_CONFIG=playbooks/files/ansible.cfg ansible-playbook -v playbooks/files/local.yaml
Then cleanup the resources using:
ansible-playbook -v playbooks/files/local.yaml -e k8s_state=absent
Run the integration test locally
First you need to build the operator image:
Or you can update an existing image with the local dhall and ansible content:
Then you can run the job using:
ansible-playbook -e @playbooks/files/local-vars.yaml -v playbooks/zuul-operator-functional/run.yaml ansible-playbook -e @playbooks/files/local-vars.yaml -v playbooks/zuul-operator-functional/test.yaml
Alternatively, you can run the job without using the operator pod by including the ansible role directly. To do that run the playbooks with:
ansible-playbook -e use_local_role=true ...
Delete all kubernetes resources
To wipe your namespace run this command:
kubectl delete $(for obj in issuer certificate statefulset deployment service secret; do kubectl get $obj -o name; done)