Instead of buying an expensive AirPort Time Capsule to make backups of your Apple devices, you can simply setup the corresponding service on your NAS or own server.
On Debian, basically two packages are required the
netatalk package for the
Apple Filing Protocol (afp) and the
avahi-daemon to announce the service on the local network.
However, even on the newest Debian 9.3 "Stretch" only
netatalk version 2.2 is
available, which is quite old and hard to configure. To circumvent this problem
a new package is built from the source using the Debian-way:
Uninstalling the existing
First, make sure that the old version of netatalk (2.x) is uninstalled to avoid strange side effects. (If you have a running version make sure to backup the corresponding config files first!)
apt-get remove netatalk --purge rm -R /etc/netatalk
Building the new
Afterwards, the packages that are required to build the package have to be installed:
apt-get install build-essential devscripts debhelper cdbs autotools-dev dh-buildinfo libdb-dev libwrap0-dev libpam0g-dev libcups2-dev libkrb5-dev libltdl3-dev libgcrypt11-dev libcrack2-dev libavahi-client-dev libldap2-dev libacl1-dev libevent-dev d-shlibs dh-systemd
Subsequently, clone the source code that already contains the required Debian package structure from the following git repository:
git clone https://github.com/adiknoth/netatalk-debian
debuild to build debian packages from the source:
cd netatalk-debian debuild -b -uc -us cd ..
As a result, a couple of
.deb packages will be created, including some development packages. However, here just the library and the daemon packages are installed:
dpkg -i libatalk18_3.1.11-1_amd64.deb netatalk_3.1.11-1_amd64.deb
The configuration of version 3.x has been simplified so that basically only
/etc/netatalk/afp.conf must be adapted. For instance, a simple
time machine entry can be added to the end of the config file:
[TimeMachine] path = /var/lib/timemachine/myuser time machine = yes vol size limit = 500000 valid users = myuser
Finally, make sure that the
netatalk service is started as well as the
avahi-daemon so that the service can be discovered by the Apple devices:
systemctl enable avahi-daemon systemctl enable netatalk systemctl start avahi-daemon systemctl start netatalk
If not commented, the home directories should be available on your Apple computer as well as the new time machine destination.