Why doesn't the script in /etc/NetworkManager/dispatcher.d/ work?

Question

linux

Hello
, the day before yesterday I switched to Ubuntu 19.04
while the flight is normal: not a single freeze)
in general, in the previous Debian, I
had a file in /etc/NetworkManager/dispatcher.d/ that, when connected to a vpn, reconfigures network routes

[email protected]:~# ls -las /etc/NetworkManager/dispatcher.d/
итого 28
4 drwxr-xr-x 5 root root 4096 мая 10 01:59 .
4 drwxr-xr-x 7 root root 4096 мая  9 16:02 ..
4 -rwxr-xr-x 1 root root 2293 апр  2 18:53 01-ifupdown
4 -rwxrwxrwx 1 root root 1798 янв 28 18:05 nm-vpn-routes
4 drwxr-xr-x 2 root root 4096 апр  2 18:53 no-wait.d
4 drwxr-xr-x 2 root root 4096 апр  2 18:53 pre-down.d
4 drwxr-xr-x 2 root root 4096 апр  2 18:53 pre-up.d

in general, there are enough rights, BUT when vpn is activated, it does not work ; I
check the logs in this way:
journalctl -u NetworkManager --since "15 min ago"
it is clear that a VPN connection is being established, nothing more.
Why doesn't the script in /etc/NetworkManager/dispatcher.d/ work?
and how else is it possible to make a correct debug?

Answer 1

in fact, it was the same script, because it did not catch $1 and $2 from NetworkManager

#!/bin/sh -e
# Script to dispatch NetworkManager events
#
# Runs ifupdown scripts when NetworkManager fiddles with interfaces.
# See NetworkManager(8) for further documentation of the dispatcher events.

if [ -z "$1" ]; then
echo "$0: called with no interface" 1>&2
exit 1;
fi

# Run the right scripts
case "$2" in
vpn-up)
logger -s "HELLO THIS IS YOUR SCRIPT"
touch "/home/vpn-up.txt
#преобразования маршрутов и иные действия
set -x
;;
vpn-down)
touch "/home/vpn-down.txt"
#преобразования маршрутов и иные действия
;;
hostname|dhcp4-change|dhcp6-change)
# Do nothing
;;
*)
echo "$0: called with unknown action \`$2'" 1>&2
exit 1
;;
esac

x.z.
why didn’t it catch like that, BUT maybe it’s a feature of Ubuntu 19.04

#!/bin/bash
#
tag=$(basename "$0")
if [ "$2" = vpn-up ]; then
  
    set -x
    # Modify dns
    set -x


fi |& logger -i -t "$tag"

if [ "$2" = vpn-down ]; then
    # echo "vpn-down" >> /tmp/iface

fi |& logger -i -t "$tag"

Answer 2

Does the script run as root? try to give the file to the user from under which you want to start the script