post_install() {
  post_upgrade
  passwd -l chronograf &>/dev/null
}

post_upgrade() {
  getent group chronograf >/dev/null || groupadd -r chronograf
  getent passwd chronograf >/dev/null || useradd -c 'chronograf' -g chronograf -d '/var/lib/chronograf' -r -m -s /bin/false chronograf

  mkdir -p /var/lib/chronograf
  chown chronograf:chronograf /var/lib/chronograf
}