The table below lists the supported monitors for the Managed Apache HTTPd Server service.
Monitor |
Description |
Frequency |
Process Monitor |
Verifies that Apache is running; if process is not running will automatically restart service. If this fails an alarm will be generated to Operations for resolution. |
1 Min |
Response Time |
The amount of time it takes the Apache HTTPd server to respond to a simple request. The threshold is configurable. The default is greater than 2.00 seconds. |
5 Min |
Requests Per Second |
Enabled Monitors the number of requests per second, if past a default value (75) this will throw an alert to Operations. |
5 Min |
Total Accesses |
Watches total number of pages accesses; if greater than 100,000 in a 5 minute window will throw an alert to Operations. |
5 Min |
Authentication failures |
Alerts Operations in the event an authentication fails. |
5 Min |
Log “error” |
Monitors web server log for all Errors. |
Instant |
Log “fail” |
Monitors web server log for all Failures. |
Instant |
Log “warn” |
Monitors web server log for all warnings. |
Instant |
Log custom check |
Customer is able to define custom defined log keyword checks in log entries. |
Instant |
Busy Workers % |
Monitors the percentage of busy works versus max clients. The threshold is configurable. The default threshold is >99% |
5 Min |
Clients in Keep Alive % |
Monitors the percentage of clients in keep alive state versus max clients. The threshold is configurable. The default threshold is >25%. |
5 Min |
Clients in DNS Lookup % |
Monitors the percentage of clients in the dns lookup state versus max clients. The threshold is configurable. The default threshold is >25%. |
5 Min |
Clients in Logging % |
Monitors the percentage of clients in the logging state versus max clients. The threshold is configurable. The default threshold is >80%. |
5 Min |
Total Mem Usage % |
Monitors the total memory usage of all httpd processes versus total physical memory of the system. The threshold is configurable. The default threshold is >50%. |
5 Min |
URL Monitor |
Remote monitor, which traverses the Internet and performs a simple http request and alerts when the specified timeout is exceeded. The default timeout is 120 seconds. The threshold is configurable and can be managed through the SAVVIS Station Portal. |
5 Min |