Automatic VPA generator for all deployments in namespace

generate_vpa.sh

#!/bin/bash
#
# Usage: ./generate_vpa.sh namespace
#
# Generates yaml files for vpa and applies.
#
mkdir -p "yaml/"$1"/"
kubectl get deploy -n $1 | grep -v NAME | awk -v namespace=$1 '{print $1" "namespace}' | awk '{ system("sed -e \"s/\{namespace}/"$2"/\" -e \"s/\{name}/"$1"/\" vpa.tpl > yaml/"$2"/"$1".yaml") }'
find "yaml/"$1 -name "*.yaml" -exec kubectl apply -f {} \;

vpa.tpl

apiVersion: autoscaling.k8s.io/v1
kind: VerticalPodAutoscaler
metadata:
  namespace: {namespace}
  name: {name}
spec:
  targetRef:
    apiVersion: "apps/v1"
    kind: Deployment
    name: {name}
  updatePolicy:
    updateMode: "Off"