fix warnings (#7)

* fix typo

* modify user name

* fix warnings

* fix sudo warning

.gitignore

@@ -1,2 +1,3 @@
 group_vars/server.yml
 hosts
+*.retry

ansible.cfg

@@ -1,3 +1,3 @@
 [defaults]
 hostfile = hosts
-remote_user = admin
+remote_user = rogerz

bootstrap.yml

@@ -1,6 +1,6 @@
 ---
 - name: Bootstrap Ubuntu servers
   hosts: server
-  sudo: yes
+  become: yes
   roles:
     - bootstrap

collectd.yml

@@ -1,7 +1,7 @@
 ---
 - name: Bootstrap Ubuntu servers
   hosts: server
-  sudo: yes
+  become: yes
   roles:
     - nginx
     - collectd

reboot.yml

@@ -1,13 +1,12 @@
 ---
 - name: Reboot server
   hosts: server
-  sudo: yes
+  become: yes
   roles:
-    - reboot 
- 
+    - reboot
+
   vars_prompt:
     - name: "reboot"
       prompt: "Are you sure you want to reboot server (yes/no)?"
       private: no
       default: "no"
-

roles/bootstrap/tasks/secure.yml

@@ -1,7 +1,7 @@
 ---
 - name: Install fail2ban
   action: apt pkg=fail2ban state=installed
-   
+
 - name: Disallow password authentication
   action: lineinfile dest=/etc/ssh/sshd_config regexp="^PasswordAuthentication" line="PasswordAuthentication no" state=present
   notify: restart ssh
@@ -11,7 +11,7 @@
   notify: restart ssh
 
 - name: Delete /etc/sudoers.d/ files
-  action: shell rm -f /etc/sudoers.d/*
+  action: file path=/etc/sudoers.d/* state=absent
 
 - name: Install packages
   action: apt pkg=ufw state=installed

user.yml

@@ -1,15 +1,15 @@
 ---
 - name: Add or update the existing user on Ubuntu servers
   hosts: server
-  sudo: yes
+  become: yes
   roles:
     - user
- 
+
   vars_prompt:
     - name: "username"
       prompt: "Enter username"
       private: no
-   
+
     - name: "password"
       prompt: "Enter password"
       encrypt: "md5_crypt"
@@ -25,4 +25,3 @@
       prompt: "Add user to sudoers group (y/n)"
       default: 'n'
       private: no
-