Question
Why is this monitoring service causing connection resets?
In my error log I found the following messages:
[Fri Jun 10 00:22:43.167653 2016] [fcgid:warn] [pid 12111] (104)Connection reset by peer: [client 198.16.7.150:38707] mod_fcgid: ap_pass_brigade failed in handle_request_ipc function
[Fri Jun 10 01:23:40.748637 2016] [fcgid:warn] [pid 14824] (104)Connection reset by peer: [client 198.16.7.150:48198] mod_fcgid: ap_pass_brigade failed in handle_request_ipc function
[Fri Jun 10 02:24:20.421414 2016] [fcgid:warn] [pid 16734] (104)Connection reset by peer: [client 198.16.7.150:55905] mod_fcgid: ap_pass_brigade failed in handle_request_ipc function
Every hour and 5 minutes I get a connection reset from the same IP address.
So I checked my access log and concluded that it comes from a service that I use to check every hour whether our website is still online. I would expect such a service to give be lightweight so I am puzzled. In the access log they each time have two entries like:
198.16.7.150 - - [06/Jun/2016:07:28:27 -0400] "GET / HTTP/1.1" 301 446 "-" "FreeWebMonitoring SiteChecker/0.2 (+http://www.freewebmonitoring.com/bot.html)"
198.16.7.150 - - [06/Jun/2016:07:28:27 -0400] "GET / HTTP/1.1" 500 74399 "-" "FreeWebMonitoring SiteChecker/0.2 (+http://www.freewebmonitoring.com/bot.html)"
What is going on here? Are they doing something strange? Or is my site not supporting something that it should?
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