Add backupclient

roles/backupclient/defaults/main.yml

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+---
+backup_borg: True

roles/backupclient/tasks/borg.yml

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+---
+- name: install borg
+  apt: name="borgbackup" state=present
+
+- name: create backup user
+  user:
+    name: borg_backup
+    comment: "BackupUser für BORG Backup"
+    group: root
+    generate_ssh_key: yes
+    ssh_key_bits: 4096
+    ssh_key_file: .ssh/id_rsa
+
+- name: fetch pubickey
+  shell: "cat /home/borg_backup/.ssh/id_rsa.pub"
+  register: id_rsa_pub
+
+- name: Add authorized key to borg backup servers
+  authorized_key:
+    user: "root"
+    key: "{{id_rsa_pub.stdout}}"
+    key_options: 'command="borg serve --restrict-to-path /srv/rep1"'
+  delegate_to: "{{item}}"
+  with_items: "{{groups['backup']}}"
+  when: id_rsa_pub.stdout is defined
+

roles/backupclient/tasks/main.yml

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+---
+- include: borg.yml
+  when: backup_borg
+  tags: ['backup', 'borg']