Improved performance by executing tasks just once per host

roles/backups-provider-user/tasks/main.yml

@@ -2,6 +2,7 @@
   user:
     name: backup
     create_home: yes
+  when: run_once_backups_provider_user is not defined
 
 - name: create .ssh directory
   file:
@@ -10,6 +11,7 @@
     owner: backup
     group: backup
     mode: '0700'
+  when: run_once_backups_provider_user is not defined
 
 - name: create /home/backup/.ssh/authorized_keys
   template:
@@ -18,6 +20,7 @@
     owner: backup
     group: backup
     mode: '0644'
+  when: run_once_backups_provider_user is not defined
 
 - name: create /home/backup/ssh-wrapper.sh
   copy:
@@ -26,6 +29,7 @@
     owner: backup
     group: backup
     mode: '0700'
+  when: run_once_backups_provider_user is not defined
 
 - name: grant backup sudo rights
   copy:
@@ -35,3 +39,9 @@
     owner: root
     group: root
   notify: sshd restart
+  when: run_once_backups_provider_user is not defined
+  
+- name: run the backups_provider_user tasks once
+  set_fact:
+    run_once_backups_provider_user: true
+  when: run_once_backups_provider_user is not defined