tests/pillar/apache_single.sls

 apache:
   server:
     enabled: true
     bind:
       address: 0.0.0.0
       ports:
       - 80
       - 443
       protocol: tcp
     modules:
     - ssl
     - rewrite
     default_mpm: prefork
     mpm:
       prefork:
         servers:
           start: 5
           spare:
             min: ${apache:server:mpm:prefork:servers:start}
             max: 10
           # Avoid memory leakage by restarting workers every x requests
           max_requests: 0
         # Should be 80% of server memory / average memory usage of one worker
         max_clients: 150
         # Should be same or more than max clients
         limit: ${apache:server:mpm:prefork:max_clients}
       event:
         servers:
           start: 5
           spare:
             min: 25
             max: 75
           threads_per_child: 25
           # Avoid memory leakage by restarting workers every x requests
           max_requests: 0
         # Should be 80% of server memory / average memory usage of one worker
         max_clients: 150
         limit: 64
       worker:
         servers:
           start: 5
           spare:
             min: 25
             max: 75
           threads_per_child: 25
           # Avoid memory leakage by restarting workers every x requests
           max_requests: 0
         # Should be 80% of server memory / average memory usage of one worker
         max_clients: 150
         limit: 64