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Setup Syncthing on Raspberry Pi 3.md

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2019-07-16 update: Google: Introduction to Linux -> http://www.tldp.org/LDP/intro-linux/intro-linux.pdf 2020-09-27 update: Add [Syncthing folder list on Raspberry Pi 3](./Syncthing folder list on Raspberry Pi 3.md) 2020-12-20 update: Going to run Ubuntu instead of Raspbian OS (Debian Buster) as the OS. 如何在树莓派上安装 Ubuntu 服务器？ Linux 中国 - 知乎 = How to Install Ubuntu Server on a Raspberry Pi -> Top 21 Raspberry Pi OS for Various Purposes [2020] 2020-12-25: Google: raspberry syncthing -> Using Syncthing to synchronize files between your Rasp-berry Pi and Mac-PC-Linux computers - TheDigitalPictureFrame.com

Setup Syncthing on Raspberry Pi 3

2019-07-16 update.

2019-10-28 update.

Method 1) Install syncthing version that the OS system picks

Install syncthing:

# Update and install syncthing
$ sudo apt update
$ sudo apt install syncthing

Start syncthing

$ syncthing

Method 2) Install syncthing version that we choose

Or, we could install syncthing and setup it to start on boot (like How to install Syncthing on Raspberry Pi + start on boot [semi-automatic] · GitHub ):

Refer to install_syncthing.sh

# Run install_syncthing.sh
$ curl -s https://gist.githubusercontent.com/hdml/7b079c114d3e20bf69f1/raw/1cd3647b1db4f80726c145fba725e27993a7fcdb/install_syncthing.sh | sudo bash

Start syncthing:

$ syncthing

Wait until you get something like:

INFO: Device 7NNIJMJ-RQ657WA-RI5YH6L-RQ657WA-RQ657WA-VGKSUYP-U6QBJNA-RQ657WA
write down this number or copy it if you SSH'd to your pi.

quit the operation using CTRL + C.

Change the config file so you can access the GUI from any PC within the network

$ nano ~/.config/syncthing/config.xml

Change 127.0.0.1 to 0.0.0.0

<gui enabled="true" tls="false">
    <address>127.0.0.1:8384</address>
</gui>

OPTIONAL: if you forward port 8384 (or any port you would like to use) on your router to you pi, you can access the GUI from anywhere in the world as long as you know you home(public) IP address. Make sure you use https and enable authentication!

Start the syncthing service

$ sudo service syncthing start

on a PC in the same network, go to the GUI and disable automatic updates. GUI -> Settings -> Disable Automatic updates hit save and restart syncthing.

If there's a new version of syncthing, use

$ sudo syncthing -upgrade

Then reboot the system.

$ sudo reboot

To remove syncthing use

$ sudo rm -r /opt/syncthing
$ sudo rm /usr/bin/syncthing
$ sudo rm -r /home/pi/.config/syncthing
$ sudo rm /etc/init.d/syncthing

optionally, delete any folder used with syncthing.

install_syncthing.sh

#!/bin/sh

if [[ $EUID -ne 0 ]]; then
   echo "This script must be run as root" 1>&2
   exit 1
fi

mkdir -p /opt/syncthing
cd /opt/syncthing
wget https://github.com/syncthing/syncthing/releases/download/v0.12.19/syncthing-linux-arm-v0.12.19.tar.gz
tar -xzvf *.tar.gz
mv syncthing*/* .
rm *.tar.gz
rm -r syncthing*/
ln -s /opt/syncthing/syncthing /usr/bin/syncthing
cd /etc/init.d/
wget https://gist.githubusercontent.com/hdml/7b079c114d3e20bf69f1/raw/e42d18d8fb966e4ff16135035720d97139867bad/syncthing
chmod +x /etc/init.d/syncthing
update-rc.d syncthing defaults

syncthing

#!/bin/sh
### BEGIN INIT INFO
# Provides: syncthing
# Required-Start: $local_fs $remote_fs
# Required-Stop: $local_fs $remote_fs
# Should-Start: $network
# Should-Stop: $network
# Default-Start: 2 3 4 5
# Default-Stop: 0 1 6
# Short-Description: Multi-user daemonized version of syncthing.
# Description: Starts the syncthing daemon for all registered users.
### END INIT INFO

# Replace with users you want to run syncthing clients for
# syncthing_USERS="<your name here>"
syncthing_USERS="pi"
DAEMON=/opt/syncthing/syncthing

startd() {
  for stuser in $syncthing_USERS; do
    HOMEDIR=$(getent passwd $stuser | awk -F: '{print $6}')
    if [ -f $config ]; then
      echo "Starting syncthing for $stuser"
      start-stop-daemon -b -o -c $stuser -S -u $stuser -x $DAEMON
    else
      echo "Couldn't start syncthing for $stuser (no $config found)"
    fi
  done
}

stopd() {
  for stuser in $syncthing_USERS; do
    dbpid=$(pgrep -fu $stuser $DAEMON)
    if [ ! -z "$dbpid" ]; then
      echo "Stopping syncthing for $stuser"
      start-stop-daemon -o -c $stuser -K -u $stuser -x $DAEMON
    fi
  done
}

status() {
  for stuser in $syncthing_USERS; do
    dbpid=$(pgrep -fu $stuser $DAEMON)
    if [ -z "$dbpid" ]; then
      echo "syncthing for USER $stuser: not running."
    else
      echo "syncthing for USER $stuser: running (pid $dbpid)"
    fi
  done
}

case "$1" in
  start) startd
    ;;
  stop) stopd
    ;;
  restart|reload|force-reload) stopd && startd
    ;;
  status) status
    ;;
  *) echo "Usage: /etc/init.d/syncthing {start|stop|reload|force-reload|restart|status}"
     exit 1
   ;;
esac

exit 0

Method 3) Install syncthing version that syncthing.net updates it

Debian/Ubuntu Packages

The stable channel is updated with stable release builds, usually every first Tuesday of the month.

# Add the release PGP keys:
curl -s https://syncthing.net/release-key.txt | sudo apt-key add -

# Add the "stable" channel to your APT sources:
echo "deb https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list

# Update and install syncthing:
sudo apt-get update
sudo apt-get install syncthing

The candidate channel is updated with release candidate builds, usually every second Tuesday of the month. These predate the corresponding stable builds by about three weeks.

# Add the release PGP keys:
curl -s https://syncthing.net/release-key.txt | sudo apt-key add -

# Add the "candidate" channel to your APT sources:
echo "deb https://apt.syncthing.net/ syncthing candidate" | sudo tee /etc/apt/sources.list.d/syncthing.list

# Update and install syncthing:
sudo apt-get update
sudo apt-get install syncthing

Depending on your distribution, you may see an error similar to the following when running apt-get:

E: The method driver /usr/lib/apt/methods/https could not be found.
N: Is the package apt-transport-https installed?
E: Failed to fetch https://apt.syncthing.net/dists/syncthing/InRelease

If so, please install the apt-transport-https package and try again:

sudo apt-get install apt-transport-https

If you insist, you can also use the above URLs with http instead of https.