132 Appendix C. ProbesC.2. Apache 1.3.x and 2.0.xThe probes in this section may be applied to instances of the Apache HTTP Server. Although thedefault values presume you will apply these probes using standard HTTP, you may also use them oversecure connections by changing the application protocol to https and the port to 443.C.2.1. Apache::ProcessesThe Apache::Processes probe monitors the processes executed on an Apache HTTP Server and col-lects the following metrics:• Data Transferred Per Child — Records data transfer information only on individual children. Achild process is one that is created from another process or the parent process.• Data Transferred Per Slot — The cumulative amount of data transferred by a childprocess that restarts. The number of slots is configured in the httpd.conf file using theMaxRequestsPerChild setting.The ExtendedStatus directive in the httpd.conf file of the Web server must be set to On for thisprobe to function properly.Field ValueApplication Protocol* httpPort* 80Pathname* /server-statusUserAgent* NOCpulse-ApacheUptime/1.0UsernamePasswordTimeout* 15Critical Maximum Megabytes Transferred Per ChildWarning Maximum Megabytes Transferred Per ChildCritical Maximum Megabytes Transferred Per SlotWarning Maximum Megabytes Transferred Per SlotTable C-1. Apache::Processes settingsC.2.2. Apache::TrafficThe Apache::Traffic probe monitors the requests on an Apache HTTP Server and collects the follow-ing metrics:• Current Requests — The number of requests being processed by the server at probe runtime.• Request Rate — The events per second of accesses to the server since the probe last ran.• Traffic — The kilobytes per second of traffic the server has processed since the probe last ran.The ExtendedStatus directive in the httpd.conf file of the Web server must be set to On for thisprobe to function properly.
