Syncthing : Synchronize Files / Directories2025/03/07

Copy files or directories from one location to an another localtion by [Syncthing].

This example is based on the environment like follows.


+----------------------+          |          +----------------------+
|     dlp.srv.world    |10.0.0.30 | 10.0.0.51|   node01.srv.world   |
|                      +----------+----------+                      |
|                      |   <------------->   |                      |
+----------------------+        sync         +----------------------+

[1]	Install Syncthing on all hosts.

root@dlp:~#

apt -y install syncthing python3-bcrypt

[2]	Configure Syncthing with any user on all hosts.

debian@dlp:~$

systemctl --user start syncthing

debian@dlp:~$

systemctl --user stop syncthing

# generate password

debian@dlp:~$

python3 -c 'import bcrypt, getpass; print(bcrypt.hashpw(getpass.getpass().encode(), bcrypt.gensalt()).decode())'

Password:
$2b$12$RXw/VJ1vBm.....

debian@dlp:~$

vi ~/.config/syncthing/config.xml


    # line 45 : change like follows
    <gui enabled="true" tls="true" debugging="false">
        # change to the address this server listens
        <address>10.0.0.30:8384</address>
        # set admin user (any name you like) and generated password
        <user>serverworld</user>
        <password>$2b$12$RXw/VJ1vBm.....</password>
        <apikey>cFdXMg.....</apikey>

        # line 87 : delete the line blow
        <unackedNotificationID>authenticationUserAndPassword</unackedNotificationID>

debian@dlp:~$

systemctl --user start syncthing

[3]	On any client computer, go to the configured address of one of your Syncthing hosts and log in with the admin user you configured.

[4]	Click [Actions] - [Show ID].

[5]	Copy the connection ID that is displayed.

[6]	Log in to the other Syncthing host and click [Add Remote Device] in the bottom right.

[7]	In the [Device ID] field, enter the connection ID displayed on the other host, and in the [Device Name] field, enter the name of the host to be synchronized (any name), and click the [Save] button.

[8]	When you return to the host for which you confirmed the connection ID, a message will appear indicating that a connection request has been made. Click [Add Device] to add the host to which you want to connect.

[9]	You will see the host that has requested a connection. Now go to the [Sharing] tab.

[10]	Check the host that requested the connection to synchronize the default folder [/home/(username)/Sync] and click the [Save] button.

[11]	When you return to the host that made the connection request, a message will appear indicating that a synchronization request has been made. Click [Share] to add the folder to be synchronized.

[12]	Now that the synchronization setup is complete, add or remove files on both hosts to verify that they are syncing properly.

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