Upgrade from Helm 2 to Helm 3

gistfile1.txt

#!/usr/bin/env bash

# Print v2 and v3 release counts
helm2_release_count=$(helm2 ls | cut -d " " -f 1 | tail -n +2 | wc -l)
helm3_release_count=$(helm3 ls --all-namespaces | cut -d " " -f 1 | tail -n +2 | wc -l)

printf "======================================================================\n"
printf "Helm v2 release count: %d\n" "${helm2_release_count}"
printf "Helm v3 release count: %d\n" "${helm3_release_count}"
printf "======================================================================\n\n"

for release in $(helm2 ls | cut -d " " -f 1 | tail -n +2)
do

  printf "Starting: Migrating %s to v3\n\n" ${release}

  helm3 2to3 convert "${release}" --delete-v2-releases

  printf "Ending: Migrated %s to v3\n\n" ${release}

done

# Print number of Helm v3 releases
helm2_release_count=$(helm2 ls | cut -d " " -f 1 | tail -n +2 | wc -l)
helm3_release_count=$(helm3 ls --all-namespaces | cut -d " " -f 1 | tail -n +2 | wc -l)

printf "======================================================================\n"
printf "Helm v2 release count: %d\n" "${helm2_release_count}"
printf "Helm v3 release count: %d\n" "${helm3_release_count}"
printf "======================================================================\n