apache.yml

---
- name: Config apache
  hosts: all
  tasks:
#    - name: Apache2 listen on port 8080
#      lineinfile: dest=/etc/apache2/ports.conf regexp="^Listen 80" line="Listen 8080" state=present
#      when: frontend_name.stdout.find('apache') != -1

#    - name: Apache2 listen on port 8443
#      lineinfile: dest=/etc/apache2/ports.conf regexp="(Listen).*(443)" line="Listen 8443" state=present
#      when: frontend_name.stdout.find('apache') != -1

    - name: Apache2 listen on port 8080
      shell: echo "Listen 8080" > /etc/apache2/ports.conf
      when: frontend_name.stdout.find('apache') != -1

    - name: Apache2 virtualhost on port 8080
      lineinfile: dest=/etc/apache2/sites-available/000-default.conf regexp="^<VirtualHost \*:80>" line="<VirtualHost *:8080>" state=present
      when: frontend_name.stdout.find('apache') != -1

    - name: Get worker size
      shell: ps -auxww | grep apache | grep -v root |  awk '{print $6}' | sort -n | tail -n1
      register: worker_size

    - name: Get max workers
      shell: echo {{ (((ansible_memtotal_mb - 264) * 0.9) / (worker_size.stdout|int / 1024))|int }}
      register: max_workers
        
    - name: Set max workers  
      lineinfile: dest=/etc/apache2/mods-available/mpm_prefork.conf regexp="MaxRequestWorkers.*([0-9])\w+" line="MaxRequestWorkers {{ max_workers.stdout }}" state=present

    - name: Restart apache2
      service: name=apache2 state=restarted