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#!/bin/bash
#
# .---. . .
# | | |
# |--- .--. .-. .-. .-.| .-. .--.--. |.-. .-. .--. .-.
# | | (.-' (.-' ( | ( )| | | | )( )| | (.-'
# ' ' --' --' -' - -' ' ' -' -' -' ' - --'
#
# Freedom in the Cloud
#
# Watchdog functions to keep systems running even if they crash
# systemd itself may be able to handle this to a large extent
#
# License
# =======
#
# Copyright (C) 2014-2016 Bob Mottram <bob@robotics.uk.to>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
# name of a script which keeps running processes going even if they crash
WATCHDOG_SCRIPT_NAME="keepon"
function install_watchdog_script {
if grep -Fxq "install_watchdog_script" $COMPLETION_FILE; then
return
fi
echo '#!/bin/bash' > /usr/bin/$WATCHDOG_SCRIPT_NAME
echo 'LOGFILE=/var/log/keepon.log' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
echo 'CURRENT_DATE=$(date)' >> /usr/bin/$WATCHDOG_SCRIPT_NAME
# application specific stuff is added later
chmod +x /usr/bin/$WATCHDOG_SCRIPT_NAME
function_check cron_add_mins
cron_add_mins 1 '/usr/bin/$WATCHDOG_SCRIPT_NAME'
echo 'install_watchdog_script' >> $COMPLETION_FILE
}
# NOTE: deliberately no exit 0