nm-dispatcher.d-rsyslog

#!/bin/bash
#
# nm-dispatcher.d-rsyslog   NetworkManager dispatcher script for Rsyslog
#
# Description: 
# This script restart rsyslog when hostname is updated (ex. hostname via dhcp).
# Because new hostname is not applied until rsyslog restarted (ex. via logrotate). 
#
# Installation:
#    # install nm-dispatcher.d-rsyslog /etc/NetworkManager/dispatcher.d/99-rsyslog
#
prog=$(basename $0)

# Enable update hostname action (default is 1)
ENABLE_UPDATE_HOSTNAME_ACTION=1

# Override config
[ -f /etc/sysconfig/rsyslog ] && . /etc/sysconfig/rsyslog

function rsyslog_update_hostname() {
    systemctl reload-or-restart rsyslog.service
    rv=$?
    if [ $rv -ne 0 ]; then
        echo "${prog}: Failed to restart rsyslog.service"
    else
        echo "${prog}: Successfully restart rsyslog.service"
    fi
    return $rv
}

interface=$1
action=$2

[ $ENABLE_UPDATE_HOSTNAME_ACTION -ne 1 ] && exit 0

case "$action" in
	hostname)
		rsyslog_update_hostname
		;;
esac

exit $?