Helper script to convert multiple ingress

convert-ingress.sh

#!/bin/bash
set -e
set -o pipefail

# kubectl convert is a plugin or binary that can be used 
# can be fetched from https://www.downloadkubernetes.com/
# 
KUBECTL_CONVERT_BIN=$HOME/Downloads/kubectl-convert

mkdir -p {pre,converted}

for ing in $(kubectl get ing  -o go-template="{{range .items}}{{ .metadata.name }}{{\"\n\"}}{{end}}"  2>&1 | grep -i -v "Warn" | grep -i -v "Deprecat")
do

kubectl get ing $ing -o yaml > "pre/$ing.yaml"

# Transform the current ingress version to networking.k8s.io/v1
$KUBECTL_CONVERT_BIN -f "pre/$ing.yaml" > "converted/$ing.yaml" --output-version networking.k8s.io/v1

# Removes unintended fields from the converted yaml
yq e -i 'del(.status)' "converted/$ing.yaml"
yq e -i 'del(.metadata.uid)' "converted/$ing.yaml"
yq e -i 'del(.metadata.selfLink)' "converted/$ing.yaml"
yq e -i 'del(.metadata.resourceVersion)' "converted/$ing.yaml"
yq e -i 'del(.metadata.creationTimestamp)' "converted/$ing.yaml"
yq e -i 'del(.metadata.generation)' "converted/$ing.yaml"
done