Ansible template for Apache2.4 with Load Balancing

lb.conf

<IfModule mod_ssl.c>
  <VirtualHost _default_:443>
    ServerAdmin [email protected]

    DocumentRoot {{ document_root }}

    LogLevel error

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined

    SSLEngine on
    SSLProxyEngine on

    SSLCertificateFile    {{ ssl_certificate_path }}
    SSLCertificateKeyFile {{ ssl_certificate_key_path }}
    SSLCACertificateFile  {{ ssl_ca_certificate_path }}

    ProxyPreserveHost On
    ProxyAddHeaders On

    RequestHeader set X-Forwarded-Proto 'https'
    RequestHeader set Https 'on'

    BalancerPersist On

    <Proxy balancer://default>

      {% for host in groups['app'] %}
      BalancerMember http://{{ host }}:8080
      {% endfor %}

    </Proxy>
    
    <Location />
      ProxyPass balancer://default/
      ProxyPassReverse balancer://default
    </Location>

  </VirtualHost>
</IfModule>

must be used with:

- apache2_module: name={{ item }} state=present
  with_items:
    - headers
    - ssl
    - proxy
    - proxy_http
    - proxy_connect
    - proxy_balancer
    - lbmethod_byrequests