Adding-User.md

LAB: Adding User

This scenario shows:

• how to add user.

Prerequisite

• You should have a look following lab, nodes that are created in that LAB, are using in ansible commands
  • LAB: Multipass-SSH Configuration (Create Ansible Test Environment)

Steps

• Update site.yml file, Add followings to add 'newuser111':

 - name: create new user
    tags: always
    user:
      name: newuser111
      groups: root

• Updated site.yml

---

- hosts: all
  become: true
  pre_tasks:

  - name: install updates (CentOS)
    tags: always
    dnf:
      update_only: yes
      update_cache: yes
    when: ansible_distribution == "CentOS"

  - name: install updates (Ubuntu)
    tags: always
    apt:
      upgrade: dist
      update_cache: yes
    when: ansible_distribution == "Ubuntu"
   
  - name: create new user
    tags: always
    user:
      name: newuser111
      groups: root

- hosts: web_servers
  become: true
  tasks:

  - name: install apache and php (CentOS)
    tags: centos,apache,httpd
    dnf:
      name:
        - httpd
        - php
      state: latest
    when: ansible_distribution == "CentOS"

  - name: install apache and php (Ubuntu)
    tags: ubuntu,apache,apache2
    apt:
      name:
        - apache2
        - libapache2-mod-php
      state: latest
    when: ansible_distribution == "Ubuntu"
    
  - name: start apache (Ubuntu)
    tags: ubuntu,apache,apache2
    service:
      name: apache2
      state: started
      enabled: yes
    when: ansible_distribution == "Ubuntu"
    
  - name: change email address for admin (Ubuntu)
    tags: ubuntu,apache,apache2
    lineinfile:
      path: /etc/apache2/sites-available/000-default.conf
      regexp: 'ServerAdmin webmaster@localhost'
      line: '       ServerAdmin [email protected]'
    when: ansible_distribution == "Ubuntu"
    register: apache2_service

  - name: restart apache (Ubuntu)
    tags: ubuntu,apache,apache2
    service:
      name: apache2
      state: restarted
    when: apache2_service.changed
    
  - name: copy default (index) html file for site
    tags: apache,apache2,httpd
    copy:
      src: default_site.html
      dest: /var/www/html/index.html
      owner: root
      group: root
      mode: 0644    
      
  - name: install unzip
    package:
      name: unzip

  - name: install terraform
    unarchive:
      src: https://releases.hashicorp.com/terraform/1.3.4/terraform_1.3.4_linux_amd64.zip
      dest: /usr/local/bin
      remote_src: yes
      owner: root
      group: root
      mode: 0755  
      
- hosts: database_servers
  become: true
  tasks:

  - name: install MariaDB (CentOS)
    tags: centos,db,mariadb
    dnf:
      name: mariadb
      state: latest
    when: ansible_distribution == "CentOS"

  - name: install MariaDB (Ubuntu)
    tags: ubuntu,db,mariadb-server
    apt:
      name: mariadb-server
      state: latest
    when: ansible_distribution == "Ubuntu"

• Run the playbook:

ansible-playbook --ask-become-pass site.yml

• Run on other nodes to check:

cat /etc/passwd

• Add SSH Key and sudoer file into 'site.yml':

  - name: add ssh key for new user
    tags: always
    authorized_key:
      user: newuser111
      key: "ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQCdEJ8xu1C0kJ4Y39x2bfptMQVdxnPDXrkjmDvB44oDV78yKWg/0B/kacMqiEaaiEyAedH>

  - name: add sudoers file for newuser111
    tags: always
    copy:
      src: sudoer_newuser111
      dest: /etc/sudoers.d/newuser111
      owner: root
      group: root
      mode: 0440

• Create sudoer_newuser111 file in files:

nano files/sudoer_newuser111
# copy following into it
newuser111 ALL=(ALL) NOPASSWD: ALL

ansible-playbook --ask-become-pass site.yml

• We can see that newuser111 file is transferred to node1

sudo ls -l /etc/sudoers.d

• Update the 'ansible.cfg' file

[defaults]
inventory = inventory
# private_key_file = ~/.ssh/ansible
remote_user = newuser111

• When we run ansible-playbook without become password (sudo), it works:

ansible-playbook site.yml

• Finally we created new user, added this user as sudoers and we can now use ansible-playbook without using become password