So as an interim update, until I find the next thing I've done wrong,
here's my current ngrok_startup.sh
Code:
--------------------
##!/bin/sh
# autostart and autoupdate ngrok for Media Server skill
# enter your own details here
TUNNELNAME="mediaservertunnel" # whatever you named the tunnel in
/home/tc/.ngrok2/ngrok.yml
UUID="xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" # from account linking step
logfile="/home/tc/ngrok.log"
date > $logfile
#
# Start ngrok
#
# path to ngrok executable. It's a big file, so keep it out of the pCP
backup, e.g. put it on the third partition
ngrok_exec="/mnt/PCP_DATA/ngrok/ngrok"
# make sure ngrok is started by the authorised user, i.e. 'tc'. When run as
a user command at boot, the user is 'root'
user=$(id | awk -F\( {'print $2'} | awk -F\) {'print $1'})
if [ $user = "tc" ]; then # ngrok command can be run without modification
$ngrok_exec start $TUNNELNAME > /dev/null 2>&1 &
elif [ $user = "root" ]; then # force ngrok command to be run by user 'tc'
sudo -u tc $ngrok_exec start $TUNNELNAME > /dev/null 2>&1 &
fi
# wait for ngrok to initialise
sleep $1 # send sleep time in seconds as command line parameter:
# 1 second seems to be enough once booted, 5 seconds to
play safe during boot.
#
# Update ngrok
#
# get URL
URL=https://$(wget -qO- http://localhost:4040/api/tunnels/${TUNNELNAME} | awk
-F\"https:// {'print $2'} | awk -F\" {'print $1'})
echo "URL = "$URL >> $logfile
# construct JSON data
DATA=[{\"name\":\"${TUNNELNAME}\",\"url\":\"${URL}\"}]
echo "DATA = "$DATA >> $logfile
# see what the update command looks like
CMD=$(echo wget -qO-
https://smartskills.tech/linking/updateNgrok.php?uuid=$UUID\&data=$DATA)
echo "CMD = "$CMD >> $logfile
# send the update command
RES=$(wget -qO-
https://smartskills.tech/linking/updateNgrok.php?uuid=$UUID\&data=$DATA)
echo "RES = "$RES >> $logfile
--------------------
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