add dataserver's known host to homeserver

roles/dataserver/tasks/main.yml

@@ -1,3 +1,13 @@
+- name: Copy host public key
+  template:
+    src: "{{ role_path }}/templates/ssh_host_ed25519_key.pub.j2"
+    dest: "/etc/ssh/ssh_host_ed25519_key.pub"
+    mode: 0644
+- name: Copy host private key
+  copy:
+    src: "{{ role_path }}/files/ssh_host_ed25519_key"
+    dest: "/etc/ssh/ssh_host_ed25519_key"
+    mode: 0600
 - name: APT upgrade
   apt:
     autoremove: true
@@ -10,9 +20,9 @@
     name: borgbackup
 - name: Add Borg public key
   authorized_key:
-    key: "{{ borg_public_key }}"
+    key: "ssh-ed25519 {{ borg_public_key }} root@max"
     user: "{{ ansible_user_id }}"
 - name: Create Borg repository
   command:
     cmd: "borg init -e none {{ backup_location }}"
-    creates: "{{ backup_location }}"
+    creates: "{{ backup_location }}"