keystone/server/wsgi.yml

classes:
- system.apache.server.single
parameters:
  keystone:
    server:
      service_name: apache2
  apache:
    server:
      enabled: true
      default_mpm: event
      site:
        keystone:
          enabled: true
          type: keystone
          name: wsgi
          host:
            name: ${linux:network:fqdn}
          log:
            custom:
              format: >-
                %v:%p %h %l %u %t \"%r\" %>s %D %O \"%{Referer}i\" \"%{User-Agent}i\"

      modules:
        - wsgi