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Configure Add-ons Foundry 1.8+ ​

INFO

To learn about Clusters and the shared responsibility model, see Clusters.

By default, the add-ons kube-proxy and CoreDNS are installed into each Cluster. If you want to bring your own replacement (i.e. Cilium's kube-proxy replacement), you can turn them off.

WARNING

Turning off kube-proxy breaks Service routing and turning off CoreDNS breaks DNS in the Cluster, unless something replaces them. Deploy the replacement before you turn the add-on off.

Turn an Add-on On or Off ​

  1. Go to Clusters → your Cluster name → Actions → Edit. For a new Cluster, set it during creation.
  2. Under Addons, switch kube-proxy or CoreDNS on or off
  3. Click Preview, then Roll out

Turning an add-on off deletes its objects from the Cluster's kube-system namespace. Turning it on deploys them again, with the version of the Cluster's Kubernetes Bundle.

Terraform ​

Reference

Changing addon_kube_proxy or addon_core_dns updates the Cluster in place.

terraform
# create cluster without kube-proxy, for a CNI that replaces it such as Cilium
# (changing it later adds or removes kube-proxy in place)
resource "meltcloud_cluster" "example_without_kube_proxy" {
  name             = "melt07"
  version          = "1.35"
  addon_kube_proxy = false
}