pre_install() {
	useradd -c 'Graylog user' -d /usr/lib/graylog -M -U -r -s /usr/bin/nologin graylog
}
post_install() {
	chown -R graylog:graylog /etc/graylog
}
post_remove() {
	userdel graylog
	rm -rf /run/graylog
}