nethserver-sssd-restore-ns6hostname

#!/bin/bash

#
# Copyright (C) 2017 Nethesis S.r.l.
# http://www.nethesis.it - nethserver@nethesis.it
#
# This script is part of NethServer.
#
# NethServer is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License,
# or any later version.
#
# NethServer is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with NethServer.  If not, see <http://www.gnu.org/licenses/>.
#

# NOTE: Run this action before set-hostname from nethserver-base!

configDb='/var/run/.nethserver-upgrade-configdb'

# Execute only if this is an upgrade from NS6 to NS 7
if [[ ! -f $configDb ]]; then
    exit 0
fi

# Read SystemName and DomainName from raw DB file (skip dbus overlay):
SystemName=$(/sbin/e-smith/db $configDb get SystemName)
DomainName=$(/sbin/e-smith/db $configDb get DomainName)

if [[ -n "${SystemName}" && -n "${DomainName}" ]]; then
    echo "${SystemName}.${DomainName}" > /etc/hostname
    echo "[NOTICE] applying hostname from ns6 backup: " $(cat /etc/hostname)
fi