Developer guide

Getting Started¶

To get started, make sure you have a working Go environment and clone the repository:

git clone git@github.com:aiven/aiven-operator.git
cd aiven-operator

Prerequisites¶

Before proceeding, please ensure that you have the following dependencies installed:

Docker or Podman
Helm
Aiven CLI (make sure you are logged in)
jq
kcat
base64 (Note: The macOS version does not support the -w0 flag, which may cause some tests to not work properly)
kind
trunk.io

Create an Aiven authentication token and an Aiven project, you'll need them in the following sections:

AIVEN_TOKEN — your authentication token
AIVEN_PROJECT_NAME — the name of you Aiven project to run the services in

Optional dependencies:

k9s — a terminal based UI to interact with our kubernetes clusters

Building¶

The project uses the make build system. To see the available targets, run make help.

Building the operator binary:

make build

Running¶

To run the operator locally, first create a local k8s cluster with kind:

$ kind create cluster --image kindest/node:v1.26.6 --wait 5m
Creating cluster "kind" ...
 ✓ Ensuring node image (kindest/node:v1.26.6) 🖼
 ✓ Preparing nodes 📦
 ✓ Writing configuration 📜
 ✓ Starting control-plane 🕹️
 ✓ Installing CNI 🔌
 ✓ Installing StorageClass 💾
 ✓ Waiting ≤ 5m0s for control-plane = Ready ⏳
 • Ready after 14s 💚
Set kubectl context to "kind-kind"
You can now use your cluster with:

kubectl cluster-info --context kind-kinds

This creates a k8s cluster and points your kubectl to that cluster:

$ kubectl cluster-info --context kind-kind
Kubernetes control plane is running at https://127.0.0.1:58083
CoreDNS is running at https://127.0.0.1:58083/api/v1/namespaces/kube-system/services/kube-dns:dns/proxy

Run the operator:

ENABLE_WEBHOOKS=false make run

In another terminal window, create a Kubernetes Secret named aiven-token (use the Aiven authentication token created earlier):

export AIVEN_TOKEN=...
kubectl create secret generic aiven-token --from-literal=token=$AIVEN_TOKEN

Then, create a manifest for an Aiven PostgreSQL service:

aiven-pg.yaml

apiVersion: aiven.io/v1alpha1
kind: PostgreSQL
metadata:
  name: aiven-devdocs-pg
spec:
  # reads the authentication token
  authSecretRef:
    name: aiven-token
    key: token

  # stores the PostgreSQL connection information on the specified Secret
  connInfoSecretTarget:
    name: pg-connection

  project: <your-project-name>
  cloudName: google-europe-west1
  plan: hobbyist
  maintenanceWindowDow: friday
  maintenanceWindowTime: 23:00:00
  userConfig:
    pg_version: "15"

...and create the service at Aiven by applying the manifest:

kubectl apply -f aiven-pg.yaml

You should see the service be created on Aiven's side using either Aiven Console or Aiven CLI:

$ avn project switch <your-project-name>
$ avn service list
SERVICE_NAME      SERVICE_TYPE  STATE       CLOUD_NAME           PLAN      CREATE_TIME           UPDATE_TIME           NOTIFICATIONS
================  ============  ==========  ===================  ========  ====================  ====================  =============
aiven-devdocs-pg  pg            REBUILDING  google-europe-west1  hobbyist  2024-01-01T00:00:00Z  2024-01-01T00:01:00Z

To see the resource on k8s side, use kubectl:

$ kubectl get postgresqls
NAME               PROJECT                REGION                PLAN       STATE
aiven-devdocs-pg   aiven-sbox-k8s-riski   google-europe-west1   hobbyist   REBUILDING

... or by running k9s in another terminal window and type ": postgresqls" to see the provisioned PostgreSQL resources:

k9s

Testing¶

For this section you'll need to set export AIVEN_TOKEN=... and an export AIVEN_PROJECT_NAME=... as well as export ENABLE_WEBHOOKS=false (see Prerequisites).

Note

If you encounter any issues with webhooks, you have the option to disable them by running export ENABLE_WEBOOKS=false

Unit¶

Running all unit tests is possible by running make test. To run a targeted test, use run=TestGrafana make test.

e2e¶

Setup the test environment:

make e2e-setup-kind

The e2e tests are configured to run against a project called aiven-ci-kubernetes-operator. To run the test against

make test-e2e-preinstalled

To remove the kind cluster, simply execute the following command:

kind delete cluster

Resource generation¶

Please see this page for more information.

Documentation¶

The documentation is written in markdown and generated by mkdocs and mkdocs-material.

To run the documentation live preview:

make serve-docs

And open the http://localhost:8000/aiven-operator/ page in your web browser.

The documentation API Reference section is generated automatically from the source code during the documentation deployment. To generate it locally, run the following command:

make docs