Gerrit Operator

Build

To build all components of the operator run:

# With E2E tests
mvn clean install jib:dockerBuild
# Without E2E tests
mvn clean install -DskipTests jib:dockerBuild

Tests

The tests require a Kubernetes cluster with a StorageClass that supports ReadWriteMany access. The tests can be configured to use a storage class by setting the rwmStorageClass property (default: nfs-client).

Deploy

First all CustomResourceDefinitions have to be deployed:

kubectl apply -f target/classes/META-INF/fabric8/*-v1.yml

Then the operator and associated RBAC rules can be deployed:

kubectl apply -f k8s/operator.yaml

k8s/operator.yaml contains a basic deployment of the operator. Resources, docker image name etc. might have to be adapted.

Install custom resources

GerritCluster

The GerritCluster custom resource configures and provisions resources shared by multiple components in a Gerrit cluster. A cluster is meant to be run in a single namespace and only one cluster per namespace is allowed.

An example CustomResource is provided at k8s/cluster.sample.yaml. To install it into the cluster run:

kubectl apply -f k8s/cluster.sample.yaml

GitGarbageCollection

An example of a GitGc-CustomResource can be found at k8s/gitgc.sample.yaml. To install it into the cluster run:

kubectl apply -f k8s/gitgc.sample.yaml

The operator will create a CronJob based on the provided spec.

Configure custom resources

GerritCluster

apiVersion: "gerritoperator.google.com/v1alpha1"
kind: GerritCluster
metadata:
  name: gerrit
spec:
  ## List of names representing imagePullSecrets available in the cluster. These
  ## secrets will be added to all pods.
  imagePullSecrets: []
  # - docker

  storageClasses:
    ## Name of a StorageClass allowing ReadWriteOnce access. (default: default)
    readWriteOnce: default

    ## Name of a StorageClass allowing ReadWriteMany access. (default: shared-storage)
    readWriteMany: nfs-client

  ## Storage for git repositories
  gitRepositoryStorage:
    ## Size of the volume (ReadWriteMany) used to store git repositories. (mandatory)
    size: 1Gi

    ## Name of a specific persistent volume to claim (optional)
    volumeName: git-repositories

    ## Selector (https://kubernetes.io/docs/concepts/storage/persistent-volumes/#selector)
    ## to select a specific persistent volume (optional)
    selector:
      matchLabels:
        volume-type: ssd
        aws-availability-zone: us-east-1

  ## Storage for logs
  gerritLogsStorage:
    ## Size of the volume (ReadWriteMany) used to store logs. (mandatory)
    size: 1Gi

    ## Name of a specific persistent volume to claim (optional)
    volumeName: logs

    ## Selector (https://kubernetes.io/docs/concepts/storage/persistent-volumes/#selector)
    ## to select a specific persistent volume (optional)
    selector:
      matchLabels:
        volume-type: ssd
        aws-availability-zone: us-east-1

GitGarbageCollection

apiVersion: "gerritoperator.google.com/v1alpha1"
kind: GitGarbageCollection
metadata:
  name: gitgc
spec:
  ## Name of the Gerrit cluster this GitGc is a part of. (mandatory)
  cluster: gerrit

  ## Container image containing the git gc script. Expected to be the one maintained
  ## by the k8sgerrit project (default: k8sgerrit/git-gc)
  image: k8sgerrit/git-gc

  ## Cron schedule defining when to run git gc (mandatory)
  schedule: "*/5 * * * *"

  ## List of projects to gc. If omitted, all projects not handled by other Git GC
  ## jobs will be gc'ed. Only one job gc'ing all projects can exist. (default: [])
  projects: []
  # - All-Projects
  # - All-Users

  ## Resource requests/limits of the git gc container
  ## (https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/)
  ## (optional)
  resources:
    requests:
      cpu: 100m
      memory: 256Mi
    limits:
      cpu: 100m
      memory: 256Mi

  ## Pod tolerations (https://kubernetes.io/docs/concepts/scheduling-eviction/taint-and-toleration/)
  tolerations: []
  # - key: "key1"
  #   operator: "Equal"
  #   value: "value1"
  #   effect: "NoSchedule"

  ## Pod affinity (https://kubernetes.io/docs/tasks/configure-pod-container/assign-pods-nodes-using-node-affinity/)
  affinity: {}
    # nodeAffinity:
    # requiredDuringSchedulingIgnoredDuringExecution:
    #   nodeSelectorTerms:
    #   - matchExpressions:
    #     - key: disktype
    #       operator: In
    #       values:
    #       - ssd