Re: Preventing an apache mpm prefork from disk trashing

Am 2011-05-12 12:58, schrieb Thomas Goirand:
> On 05/12/2011 05:45 PM, Emmanuel Kasper wrote:
>> Hello
>>
>> I have a wordpress blog running with apache in prefork mode ( all debian
>> packages ) I have noticed that by traffic peaks ( think reddit ), Apache
>> starts to swap heavily becauses it creates too much processes according
>> to the RAM of the machine.
>>
>> I have been thinking of reducing MaxClients so that MaxClient * ResRAM
>> apache process < RAM of the server.
>>
>> Is that the correct way to treat this problem ?
> 
> Yes, that's the way. And I would also recommend to limit the maximum
> number of connection to port 80 with iptables, just in case someone is
> flooding. Do a -j DROP, so that clients will retry for a while to
> connect in case it goes busy. You can also use bwshare to limit the
> number of connections per IP (also a good protection against flooding).

yes a kinf of fail2ban was on my todo list for a long time, might be the
right time to check
thanks for the tip

Manu