Utility to interactively edit Ceph CRUSH map

ceph-edit-crush-map.sh

#!/bin/bash
set -e

original_bin=$(mktemp)
original_src=${original_bin}.src
new_bin=$(mktemp)
new_src=${new_bin}.src

cleanup () {
  rm -f "$original_bin" "$original_src" "$new_bin" "$new_src"
}

trap cleanup EXIT

ceph osd getcrushmap -o "$original_bin"
crushtool -d "$original_bin" -o "$original_src"
cp "$original_src" "$new_src"

while true; do
  ${EDITOR:-${VISUAL:-/usr/bin/vi}} "$new_src"
  if crushtool -c "$new_src" -o "$new_bin"; then
    break
  else
    read
  fi
done

if cmp -s "$new_bin" "$original_bin"; then
  echo "No changes in CRUSH map detected, skipping install"
else
  ceph osd setcrushmap -i "$new_bin"
fi