postinst is in opennebula 3.2.1-2.
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  | #!/bin/sh
set -e
ONEHOME=/var/lib/one
ONEAUTH=$ONEHOME/.one/one_auth
ONE_GROUP=cloud
ONE_USER=oneadmin
if [ "$1" = "configure" ]; then
    # Use dpkg-statoverride instead of direct chmod/chown
    if ! dpkg-statoverride --list /var/log/one >/dev/null 2>&1; then
            dpkg-statoverride --update --add $ONE_USER root 755 /var/log/one
    fi
    if ! dpkg-statoverride --list /var/lib/one/images >/dev/null 2>&1; then
        # sticky bit + setgid
        # http://www.opennebula.org/documentation:rel3.2:oned_conf#image_repository
        dpkg-statoverride --update --add $ONE_USER root 3770 /var/lib/one/images
    fi
    if ! dpkg-statoverride --list /var/lib/one/.one >/dev/null 2>&1; then
            dpkg-statoverride --update --add $ONE_USER $ONE_GROUP 700 /var/lib/one/.one
    fi
    if [ ! -f $ONEAUTH ]; then
        ONE_PASSWORD=`apg -m 12 -M cNl -n 1`
        if [ -n "${ONE_PASSWORD}" ]; then
            echo "${ONE_USER}:${ONE_PASSWORD}" > $ONEAUTH
            chown $ONE_USER:$ONE_GROUP $ONEAUTH
            chmod 600 $ONEAUTH
        fi
    fi
fi
# Automatically added by dh_installinit
if [ -x "/etc/init.d/opennebula" ]; then
	if [ ! -e "/etc/init/opennebula.conf" ]; then
		update-rc.d opennebula defaults >/dev/null
	fi
	invoke-rc.d opennebula start || exit $?
fi
# End automatically added section
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