apt-get install -y rsnapshot

mv /etc/rsnapshot.conf /etc/rsnapshot.conf.org

cat < /etc/rsnapshot.conf
config_version	1.2
snapshot_root	/media/backup/
logfile		/var/log/rsnapshot.log
verbose		3
loglevel	3

cmd_preexec    /bin/mount /media/backup
cmd_postexec   /bin/umount /media/backup
#backup_script      /usr/local/bin/backup_mysql.sh       localhost/mysql/

cmd_rsync	/usr/bin/rsync
rsync_long_args   --delete --numeric-ids --relative --delete-excluded --copy-links
cmd_ssh		/usr/bin/ssh
ssh_args	-F /home/foo/.ssh/config -i /home/foo/.ssh/id_rsa

interval	daily	7
interval	weekly	3
interval	monthly	1

#exclude	dev/*
exclude		lost+found/*
exclude		mnt/*
exclude		proc/*
exclude		run/*
exclude		sys/*
exclude		tmp/*

include_file	~/etc/backup-server-include.txt
exclude_file	~/etc/backup-server-exclude.txt

# backup remote server
backup	root@www.example.com:/	srv/	+rsync_long_args=--exclude=export/* --exclude=media/*/.Trash* --exclude=video/*

# backup local server
backup		/		www.example.com/	+rsync_long_args=--exclude=mnt/*  --exclude=media/* --exclude=var/lib/lxc/* --exclude=var/lib/lxcfs/*

# backup LXC containers
backup		/var/lib/lxc	    www.example.com/
EOF


# backup-server-exclude.txt 
/*
/var/*
/var/snap/*
/var/snap/lxd/*
/var/snap/lxd/common/*
/var/snap/lxd/common/lxd/*
/var/snap/lxd/common/lxd/database

# rsnapshot/backup-server-include.txt 
/etc
/var
/var/snap
/var/snap/lxd
/var/snap/lxd/common
/var/snap/lxd/common/lxd
/var/snap/lxd/common/lxd/database


rsnapshot -c /etc/rsnapshot.conf daily

Check configuration
rsnapshot configtest

Desktop starter

cat << EOF | sudo tee /usr/share/applications/rsnapshot.desktop
[Desktop Entry]
Name=Backup
Exec=rsnapshot daily
Icon=org.gnome.DejaDup
Type=Application
Terminal=true
Categories=Utility;Archiving;GNOME;GTK;X-GNOME-Utilities;
EOF

Links
https://wiki.archlinux.de/title/Rsnapshot
http://www.rsnapshot.org/howto/1.2/rsnapshot-HOWTO.en.html
http://wiki.ubuntuusers.de/rsnapshot