Install Ansible

1. Initializing
   • Create a folder inventory with a hosts file in it

     [server] # group name
     {ip address}
     {server name}
     

   • Try to ping the servers with password

     ansible -i ./inventory/hosts server -m ping --user sysadmin --ask-pass
     

   • Create a folder playboos and has a yaml file apt.yml in it

     - hosts: "*"
       become:
       tasks:
         - name: apt
           apt:
             update_cache: yes
             upgrade: 'yes'
     

   • Run the playbook

     ansible-playbook ./playbooks/apt.yml --user serveradmin --ask-pass --ask-become-pass -i ./inventory/hosts
     

   • Create a file qemu-get-agent.yml under playbooks to install a module

     - name: install latest qemu-guest-agent
       hosts: "*"
       tasks:
         - name: install qemu-guest-agent
           apt:
             name: qemu-guest-agent
             state: present
             update_cache: true
           become: true
     

   • Add the mattermost playbook

     ---
     - name: Install Mattermost Server
       hosts: all
       become: yes
       vars:
         mattermost_version: 5.31.0
         mattermost_db_name: mattermost
         mattermost_db_user: mmuser
         mattermost_db_password: mmuser_password
     
       tasks:
         - name: Install necessary packages
           apt:
             name: "{{ item }}"
             state: present
           with_items:
             - git
             - nginx
             - postgresql
             - postgresql-contrib
     
         - name: Create Mattermost user
           user:
             name: mattermost
             state: present
     
         - name: Clone Mattermost server
           git:
             repo: 'https://github.com/mattermost/mattermost-server.git'
             dest: "/opt/mattermost-server"
             version: "v{{ mattermost_version }}"
           become: yes
           become_user: mattermost
     
         - name: Configure PostgreSQL
           block:
             - name: Create Mattermost database
               postgresql_db:
                 name: "{{ mattermost_db_name }}"
                 login_user: postgres
     
             - name: Create Mattermost database user
               postgresql_user:
                 db: "{{ mattermost_db_name }}"
                 name: "{{ mattermost_db_user }}"
                 password: "{{ mattermost_db_password }}"
                 priv: ALL
                 login_user: postgres
     
         - name: Set up Mattermost configuration
           template:
             src: mattermost_config.json.j2
             dest: "/opt/mattermost-server/config/config.json"
             owner: mattermost
             mode: '0644'
     
         - name: Start Mattermost service
           systemd:
             name: mattermost
             state: started
             enabled: yes