APACHE

Checks the rate of requests that the Apache server has served beyond the specified time. Alerts if this rate exceeds a threshold. The number of slow requests is reset to zero when the Apache log file is recycled. Configuration: SSH monitoring account, apache access log file path, time in seconds to determine if a request is slow, alert and critical thresholds.

Checks the status of the mod_jk connector to the different workers and the load balancing operation. Alerts in case of problems.

Configuration: URL to access the jkstatus page, login credentials for this page.

Collects the number of requests per second on an Apache Web server. This control notifies when a threshold is exceeded. Configuration: Apache server port, status access timeout in seconds, Apache binary path, Apache pid path/name, status page name, HTTPS access to status page, alert threshold, critical threshold.

Collects and displays the rate of free Apache slots and slots in Reading state. This control changes state if the number of free slots becomes too low, or if the rate of slots in Reading state is too high. Configuration: timeout in seconds for access to the Apache server, thresholds for free slot rate, threshold for R-state slot rate.

Collects the number of bytes per second on an Apache web server. This control notifies when a threshold is exceeded. Configuration: Apache server port, status access timeout in seconds, Apache binary path, Apache pid path/name, status page name, HTTPS access to status page, alert threshold, critical threshold.

Checks the status of a load balancing pool made with the Apache mod_proxy module. Alerts if there is a problem or if the number of unreachable nodes exceeds a threshold expressed as a percentage of the pool.

Configuration: Status page URL, HTTP monitoring account, alert thresholds.

Collects and displays the number of idle/busy workers. This control notifies if the number of idle workers gets too low. Configuration: Apache server port, status access timeout in seconds, Apache binary path, Apache pid path/name, status page name, HTTPS access to status page, alert threshold (above critical), critical threshold.