Installation

This page describes how to install Metacontroller, either to develop your own controllers or just to run third-party controllers that depend on it.

Prerequisites

  • Kubernetes v1.11+
  • You should have kubectl available and configured to talk to the desired cluster.

Running on kubernetes older than 1.16

As metacontroller does not have direct dependency on kubernetes API it have wide range of supported kubernetes versions. However, to be able to install it on clusters older than 1.16, CRD with schema in version v1beta1 must be used then.

Grant yourself cluster-admin (GKE only)

Due to a known issue in GKE, you'll need to first grant yourself cluster-admin privileges before you can install the necessary RBAC manifests.

kubectl create clusterrolebinding <user>-cluster-admin-binding --clusterrole=cluster-admin --user=<user>@<domain>

Replace <user> and <domain> above based on the account you use to authenticate to GKE.

Install Metacontroller using Kustomize

# Apply all set of production resources defined in kustomization.yaml in `production` directory .
kubectl apply -k https://github.com/metacontroller/metacontroller/manifests/production

If you prefer to build and host your own images, please see the build instructions in the contributor guide.

If your kubectl version does does not support -k flag, please install resources mentioned in manifests/production/kustomization.yaml one by one manually with kubectl apply -f {{filename}} command.

Compatibility note CRD's are shipped in two versions:

  • v1 - supposed to be used when your kubernetes cluster is 1.16+
  • v1beta1 otherwise

Install Metacontroller using Helm

Alternatively, metacontroller can be installed using an Helm chart.

Migrating from /GoogleCloudPlatform/metacontroller

As current version of metacontroller uses different name of the finalizer than GCP version (GCP - metacontroller.app, current version - metacontroller.io) thus after installing metacontroller you might need to clean up old finalizers, i.e. by running:

kubectl get <comma separated list of your resource types here> --no-headers --all-namespaces | awk '{print $2 " -n " $1}' | xargs -L1 -P 50 -r kubectl patch -p '{"metadata":{"finalizers": [null]}}' --type=merge