I recently started to get this error message:
Server ran out of threads to serve requests. Consider raising the ThreadsPerChild setting
No any websites can be displayed after this error message comes up.
Restarting Apache service helps for a while.
I searched Google and the only thing I could find is - Your server is being attacked by a botnet ( what is botnet?? )
So I have installed mod_security, but the issue is still coming up every day.
ThreadsPerChild is set to 250
Please help.
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