admission-controller

README

VPA Admission Controller

Running

1. You should make sure your API server supports Mutating Webhooks. Its --admission-control flag should have MutatingAdmissionWebhook as one of the values on the list and its --runtime-config flag should include admissionregistration.k8s.io/v1beta1=true.
2. Generate certs by running bash gencerts.sh. This will use kubectl to create a secret in your cluster with the certs.
3. Create RBAC configuration for the admission controller pod by running kubectl create -f ../deploy/admission-controller-rbac.yaml
4. Create the pod: kubectl cerate -f ../deploy/admission-controlller-deployment.yaml. The first thing this will do is it will register itself with the apiserver as an Webhook Admission Controller and start changing resource requirements for pods on their creation & updates.