I am seeing this error in the apache error log about every 8 mins:
Normally I would think this is a ddos attack on apache, but all the requests are coming from localhost. I'm wondering if this has something to do with cpanel's monitor for http? Looked around for a cron that might be running this and see none.
httpd/error_log.1:[Sat Dec 23 11:22:11 2006] [error] [client 127.0.0.1] request failed: erroneous characters after protocol string: GET / HTTP/2.0; killall -TERM httpd; sleep 2; killall -9 httpd; /etc/rc.d/init.d/httpd stop; /etc/rc.d/init.d/httpd startssl; /usr/local/apache/bin/apachectl startssl