Backup

18.10.2024, this is about file backup.

Windows#

On Windows I used SyncBackFree. This worked well, but you need to trigger it on demand.

Syncthing#

see heise CT article

Ports#

Default (or see ~/.local/state/syncthing/config.xml)

Configuration#

> sudo vi ~/.local/state/syncthing/config.xml

<options>
    <listenAddress>tcp6://[::]:22000</listenAddress>    # listen to ipv6 only, changed from "default"
Consider ro set up a port forwarding for ports 22000/TCP and 22000/UDP (or whichever port is set in the Sync Protocol Listen Address setting). The external forwarded ports and the internal destination ports have to be the same (e.g. 22000/TCP).

On Raspberry PI#

get source signed key
> sudo curl -s -o /usr/share/keyrings/syncthing-archive-keyring.gpg https://syncthing.net/release-key.gpg
add source to package lists
> echo "deb [signed-by=/usr/share/keyrings/syncthing-archive-keyring.gpg] https://apt.syncthing.net/ syncthing stable" | sudo tee /etc/apt/sources.list.d/syncthing.list
check
>sudo vi /etc/apt/sources.list.d/syncthing.list
install
> sudo apt update
> sudo apt full-upgrade -y
> sudo apt install syncthing -y
start/stop
> sudo systemctl enable syncthing@markus.service
> sudo systemctl start syncthing@markus.service
> sudo systemctl disable syncthing@markus.service
> sudo systemctl stop syncthing@markus.service
enable web gui for all IP addresses (config.xml is created after first start only)
# configuratrion
> sudo vi ~/.local/state/syncthing/config.xml
> sudo vi ~/.local/state/syncthing/config.xml 
    update line:  <address>0.0.0.0:8384</address>
> sudo systemctl restart syncthing@markus.service
Web Guid at http://raspberrypi5:8384
API can be used with header: X-API-Key=<see web gui preferences> 
https://raspberrypi5:8384/rest/pending/folders

On Rented Linux Server (Debian)#

config file (keep standard) 
vi /home/markus.ebel/.config/syncthing/config.xml

Add Reverse Proxy for Apache 

> a2enmod proxy_http headers
add to /etc/apache2/sites-enabled/000-default-le-ssl.conf inside your default <VirtualHost>
<Location /syncthing/>
    ProxyPass http://localhost:8384/
    ProxyPassReverse http://localhost:8384/
    RequestHeader set "X-Forwarded-Proto" expr=%{REQUEST_SCHEME}
    Require all granted
</Location>

commands 

sudo systemctl enable syncthing@markus.ebel.service
sudo systemctl start syncthing@markus.ebel.service
sudo systemctl restart syncthing@markus.ebel.service

https://www.inetone.de/syncthing/ (trailing slash is mandatory!)

Issues#

"failed to setup inotify handler. Please increase inotify limits" > see https://docs.syncthing.net/users/faq.html#inotify-limits
add following line > sudo vi /etc/sysctl.conf 
fs.inotify.max_user_watches=204800
Then reboot or execute 
echo 204800 | sudo tee /proc/sys/fs/inotify/max_user_watches
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