postrm is in maas-region-controller 1.5+bzr2252-0ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 | #!/bin/sh
set -e
. /usr/share/debconf/confmodule
RELEASE=`lsb_release -rs` ||  RELEASE=""
if [ -f /etc/dbconfig-common/maas.conf ]; then
	if [ -f /usr/share/dbconfig-common/dpkg/postrm ]; then
		. /usr/share/dbconfig-common/dpkg/postrm.pgsql
		dbc_go maas-region-controller $@
	fi
fi
case "$1" in
	purge)
		rm -rf /var/log/maas
		rm -rf /var/lib/maas
		case $RELEASE in
			12.04|12.10|13.04)
				if [ -h /etc/apache2/conf.d/maas-http.conf ]; then
					rm -rf /etc/apache2/conf.d/maas-http.conf
				fi
				;;
			*)
				if [ -h /etc/apache2/conf-enabled/maas-http.conf ]; then
					rm -rf /etc/apache2/conf-enabled/maas-http.conf
				fi
				;;
		esac
		# Restarting apache2
		if [ -x /usr/sbin/invoke-rc.d ]; then
			invoke-rc.d apache2 restart || true
		fi
		# Delete symlink
		if [ -L /etc/squid-deb-proxy/mirror-dstdomain.acl.d/99-maas ]; then
			rm -rf /etc/squid-deb-proxy/mirror-dstdomain.acl.d/99-maas
		fi
		# Remove rabbitmq/longpoll/celery
		longpoll_user="maas_longpoll"
		longpoll_vhost="/maas_longpoll"
		workers_user="maas_workers"
		workers_vhost="/maas_workers"
		if [ -x /usr/sbin/rabbitmqctl ]; then
			rabbitmqctl delete_vhost "$longpoll_vhost" || true
			rabbitmqctl delete_user "$longpoll_user" || true
			rabbitmqctl delete_vhost "$workers_vhost" || true
			rabbitmqctl delete_user "$workers_user" || true
		fi
esac
# Automatically added by dh_installdebconf
if [ "$1" = purge ] && [ -e /usr/share/debconf/confmodule ]; then
	. /usr/share/debconf/confmodule
	db_purge
fi
# End automatically added section
db_stop
 |