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I have got a VPS with six websites running on it. None of them get very much traffic at all, maybe 10-20 a day each.

As far as I am aware, /usr/sbin/apache2 -k start should represent a user hitting a site. (user in htop is www-data.)

I am watching htop for this VPS, and it is constantly hitting over and over. The server load average is 0.58 and it typically never gets above 0.10.

Is this something I should be concerned about? I restarted the server earlier and it stopped, but then started about 4 hours later.

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The evidence points to CloudFlare re-crawling the websites after purging the cache. It seemed as if it wouldn't take as long, but everything I found during my research pointed to that conclusion.

If it continues, I will update this status.

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