Ansible-Nginx-Cluster/roles/nginx_cluster/tasks/main.yml

---
# file: roles/nginx_cluster/tasks/main.yml

- name: Install EPEL RPM
  package:
    name: "https://dl.fedoraproject.org/pub/epel/epel-release-latest-{{ ansible_distribution_major_version }}.noarch.rpm"
    state: present
    disable_gpg_check: True
  when: ansible_distribution == 'RedHat' or ansible_distribution == 'AlmaLinux' or ansible_distribution == 'Rocky'
  tags: packages

- name: Install remi RPM
  package:
    name: https://rpms.remirepo.net/enterprise/remi-release-9.rpm
    state: present
    disable_gpg_check: True
  tags: packages

- name: Enable DNF module for php
  shell: "dnf module enable -y php:remi-{{ nginx_cluster_php_version }}"
  register: dnf_module_enable
  changed_when: "'Nothing to do' not in dnf_module_enable.stdout"

- name: Install prereq packages
  package:
    name:
      - nginx
      - php
      - php-mysqlnd
      - lsyncd
    state: latest
  tags: packages

- name: Install additional packages
  package:
    name: "{{ item }}"
    state: latest
  loop: "{{ nginx_cluster_aditional_packages }}"
  tags: packages
    
- name: Create a symbolic link for host cert
  file:
    src: "/etc/ssl/{{ ansible_hostname }}"
    dest: "/etc/ssl/host"
    state: link

- name: Create temp directory
  file:
    path: "{{ nginx_cluster_temp_dir }}"
    state: directory
    owner: "{{ nginx_cluster_user }}"
    group: "{{ nginx_cluster_user }}"
    mode: '700'

- name: Create sync directory
  file:
    path: "{{ nginx_cluser_sync_site_dir }}"
    state: directory
    owner: "nginx"
    group: "nginx"
    mode: '755'

- name: Generate ssh keypair for cluster communication
  user:
    name: "{{ nginx_cluster_user }}"
    generate_ssh_key: yes
    ssh_key_type: ed25519
    ssh_key_bits: 4096
    ssh_key_file: "{{ nginx_cluster_private_key }}"
    ssh_key_passphrase: ""
    force: no

- name: Get the public key
  slurp:
    src: "{{ nginx_cluster_private_key }}.pub"
  register: slurped_pub_key

- name: Decode the pub key and store as fact
  set_fact:
    nginx_cluster_public_key: "{{ slurped_pub_key.content | b64decode }}"

- name: Setup access for other servers
  include_tasks: setup-server.yml
  loop: "{{ groups['nginx_cluster']|difference([inventory_hostname]) }}"
  loop_control:
    extended: yes

- name: Create variable of other members IPs to be included into the cluster
  set_fact: nodelist={%for host in groups['nginx_cluster']|difference([inventory_hostname])%}"{{hostvars[host].ansible_host}}"{% if not loop.last %},{% endif %}{% endfor %}

- name: Update lsyncd config
  template:
    src: "lsynd.conf.j2"
    dest: "/etc/lsyncd.conf"
  notify: Restart lsyncd

- name: Allow web server to listen on tcp port
  seport:
    ports: "{{ item }}"
    proto: tcp
    setype: http_port_t
    state: present
  loop: "{{ nginx_cluster_open_ports }}"

- name: Set selinux flags
  seboolean:
    name: "{{ item }}"
    state: true
    persistent: true
  loop: "{{ nginx_cluster_sebool }}"
  when: nginx_cluster_sebool != ''

- name: Start and enable lsyncd
  service:
    name: lsyncd
    state: started
    enabled: yes

- name: Start and enable nginx
  service:
    name: nginx
    state: started
    enabled: yes

- name: Start and enable php
  service:
    name: php-fpm
    state: started
    enabled: yes

- name: Enable firewall for access IPs
  include_tasks: firewall.yml
  loop: "{{ nginx_cluster_access_ip }}"
  loop_control:
    loop_var: access_ip
  when: nginx_cluster_access_ip != ""

- name: Enable firewall rules
  firewalld:
    port: "{{ item }}/tcp"
    permanent: yes
    immediate: yes
    state: enabled
  notify: Reload firewalld
  loop: "{{ nginx_cluster_open_ports }}"
  when: nginx_cluster_access_ip == ""