operator

Aperture Operator

This document is an overview of how the operator works from a user perspective.

Introduction

The operator is used to deploy the Aperture Agent, Controller and its required resources on the Kubernetes.

Custom Resources

The operator has below custom resources:

• Agent
• Controller
• Policy

all custom resources use the api group fluxninja.com and version v1alpha1.

Deploying the operator using make

Follow the below steps to deploy the operator on the local cluster:

• Create Docker image for the operator:

  make operator-docker-build
  

• [Optional] If you are using Kind cluster, upload the image to the cluster:

  kind load docker-image aperture-operator:latest
  

• Deploy the operator and its required resources:

  make operator-deploy
  

• [Optional] Run the sample CR to deploy the Aperture Agent and Controller

  kubectl apply -f config/samples/fluxninja.com_v1alpha1_agent.yaml
  kubectl apply -f config/samples/fluxninja.com_v1alpha1_controller.yaml
  kubectl apply -f config/samples/fluxninja.com_v1alpha1_policy.yaml
  

• To uninstall the operator, run below commands:

  kubectl delete -f config/samples/fluxninja.com_v1alpha1_agent.yaml
  kubectl delete -f config/samples/fluxninja.com_v1alpha1_controller.yaml
  kubectl delete -f config/samples/fluxninja.com_v1alpha1_policy.yaml
  make operator-undeploy
  

Deploying the operator using helm

You can also deploy the operator and Agent CR using the helm chart as well using below steps.

• Install the dependencies of the chart:

  helm dependency build manifests/charts/aperture-controller
  helm dependency build manifests/charts/aperture-agent
  

• Configure Etcd configuration for Agent by modifying the Aperture Agent chart as below if you are installing the Aperture Controller chart as well:

  agent:
    config:
      etcd:
        endpoints: ["http://controller-etcd:2379"]
      prometheus:
        address: "http://controller-prometheus-server:80"
  

• Install or upgrade the chart:

  helm upgrade --install controller manifests/charts/aperture-controller
  helm upgrade --install agent manifests/charts/aperture-agent
  

• [Optional] If you want to install just the operator and not the Aperture Agent and Controller CR, create a values.yaml with below parameters and pass it with helm upgrade:

  agent:
    create: false
  

  controller:
    create: false
  

  helm upgrade --install controller manifests/charts/aperture-controller -f controller-values.yaml
  helm upgrade --install agent manifests/charts/aperture-agent -f agent-values.yaml
  

  All the configurable parameters for the Aperture Operator and CR can be found at Agent. and Controller

• The Controller chart installs Prometheus and Etcd instances by default. If you do not want to install and use your existing instances of Prometheus or Etcd, configure below values in the values.yaml file and pass it with helm upgrade:

  controller:
    config:
      etcd:
        endpoints: ["ETCD_ENDPOINT"]
      prometheus:
        address: "PROMETHEUS_ENDPOINT"
  
  etcd:
    enabled: false
  
  prometheus:
    enabled: false
  

  agent:
    config:
      etcd:
        endpoints: ["ETCD_ENDPOINT"]
      prometheus:
        address: "PROMETHEUS_ENDPOINT"
  

• To uninstall the operator, run below commands:

  helm uninstall controller
  helm uninstall agent