I noticed in my Munin graphs for Apache that there was a large spike in traffic yesterday. However, I have been unable to correlate this with anything on the site.
But I checked the Apache logs and the number of requests does not correlate with the Munin output. I ran a few commands to count the number of requests each hour from the logs and it just shows the regular increase, nothing like the spike shown in Munin.
I checked both
other_vhosts_access.log (which counts the actual websites set up) and
access.log (counts hits to the IP address, which seems to be mostly dummy connections or security polls).
Where might these extra hits be coming from?