ansible-base/roles/backup_client/templates/backup.sh.j2

#!{{ backup_client_shell }}
export HOME={{ backup_client_user_home }}
{% for backup_serv in groups['backup_server'] %}

# Check if {{ backup_serv }} is a known host
grep {{ backup_serv }} ~/.ssh/known_hosts &> /dev/null
if [ ! $? -eq 0 ]; then
	ssh-keygen -F {{ backup_serv }} || ssh-keyscan {{ backup_serv }} >>~/.ssh/known_hosts
fi

{{ backup_client_borgbackup_bin }} list backup-$(hostname -s)@{{ backup_serv }}:{{ hostvars[backup_serv]['backup_folder'] }}/$(hostname -s) &>/dev/null

if [ $? -ne 0 ]
then
    ssh backup-$(hostname -s)@{{ backup_serv }} mkdir -p {{ hostvars[backup_serv]['backup_folder'] }}/$(hostname -s) -m 0700
    export BORG_PASSPHRASE=""
    {{ backup_client_borgbackup_bin }} init --encryption=repokey backup-$(hostname -s)@{{ backup_serv }}:{{ hostvars[backup_serv]['backup_folder'] }}/$(hostname -s)
fi

{{ backup_client_borgbackup_bin }} prune -v backup-$(hostname -s)@{{ backup_serv }}:{{ hostvars[backup_serv]['backup_folder'] }}/$(hostname -s) --keep-daily=7 --keep-weekly=4 --keep-monthly=1
{{ backup_client_borgbackup_bin }} create --info --stats --compression {{ backup_client_compression_param }} backup-$(hostname -s)@{{ backup_serv }}:{{ hostvars[backup_serv]['backup_folder'] }}/$(hostname -s)::$(date +%F) $(find {{ backup_client_folders_to_backup }} -maxdepth 1 -type d | grep -Ev '^/$|^/tmp|^/lost\+found|^/run|^/proc|^/dev|^/sys' | tr '\n' ' ')
{% endfor %}