update..

DOC/README.set-variable-from-command-output

@@ -0,0 +1,9 @@
+- name: Print out password hash of node-exporter admin password to variable
+  shell: mkpasswd -m bcrypt "{{ node_exporter_admin_password  }}"
+  register: password_hash
+  ignore_errors: true
+  changed_when: false
+
+- name: Show content of var 'password_hash.rc'
+  debug:
+    msg: "{{ password_hash.stdout }}"