#!/bin/bash

set -e
set -o nounset
set -o pipefail
set -o posix

# creating _galera user, note that the '_' (underscore) before the name of the
# user is a recommendation from
# https://www.debian.org/doc/debian-policy/ch-opersys.html#users-and-groups
getent passwd _galera >/dev/null 2>&1 ||
  adduser --system --no-create-home --home /nonexistent \
    --disabled-password --disabled-login --force-badname _galera