Apache freezing each night for one hour !

[Spacedust]

What is this None of my pages works during the night for about one hour, then everything back to normal:

[Wed Oct 08 05:33:19 2014] [error] [client 195.93.251.209] FastCGI: comm with server "/home/kloxo/httpd/webmail/onlinemail/webmail.frix.eu.0fake" aborted: idle timeout (90 sec), referer: http://webmail.frix.eu/
[Wed Oct 08 05:33:19 2014] [error] [client 195.93.251.209] FastCGI: neither POLLIN nor POLLOUT..., referer: http://webmail.frix.eu/
[Wed Oct 08 05:33:19 2014] [error] [client 195.93.251.209] FastCGI: incomplete headers (0 bytes) received from server "/home/kloxo/httpd/webmail/onlinemail/webmail.frix.eu.0fake", referer: http://webmail.frix.eu/

[Spacedust]

Today again - for 35 minutes, then back to normal. Nothing wrong was logged inside logs (apache, nginx and php-fpm).

[MRatWork]

Only report for webmail.frix.eu?

[Spacedust]

I just got it during the day.

I see it recovered default ~lxcenter.conf and Apache was crashing because too small Server Limit...

Now I used apache-optimize and got this:

Timeout 150
KeepAlive Off
MaxKeepAliveRequests 100
KeepAliveTimeout 15

ServerLimit 2000

<IfModule prefork.c>
    StartServers 2
    MinSpareServers 14
    MaxSpareServers 28
    ServerLimit 28
    <IfVersion >= 2.4>
        MaxRequestWorkers 28
        MaxConnectionsPerChild 2000
    </IfVersion>
    <IfVersion < 2.4>
        MaxClients 28
        MaxRequestsPerChild 2000
    </IfVersion>
    MaxMemFree 2
    SendBufferSize 65536
    ReceiveBufferSize 65536
</IfModule>

<IfModule itk.c>
    StartServers 2
    MinSpareServers 14
    MaxSpareServers 28
    ServerLimit 28
    <IfVersion >= 2.4>
        MaxRequestWorkers 28
        MaxConnectionsPerChild 2000
    </IfVersion>
    <IfVersion < 2.4>
        MaxClients 28
        MaxRequestsPerChild 2000
    </IfVersion>
    MaxMemFree 2
    SendBufferSize 65536
    ReceiveBufferSize 65536
</IfModule>

<IfModule worker.c>
    StartServers 2
    MinSpareThreads 12
    MaxSpareThreads 24
    ThreadsPerChild 25
    <IfVersion >= 2.4>
        MaxRequestWorkers 1000
        MaxConnectionsPerChild 0
    </IfVersion>
    <IfVersion < 2.4>
        MaxClients 1000
        MaxRequestsPerChild 0
    </IfVersion>

    ThreadStackSize 8196
    MaxMemFree 2
    SendBufferSize 65536
    ReceiveBufferSize 65536
</IfModule>

<IfModule event.c>
    StartServers 2
    MinSpareThreads 12
    MaxSpareThreads 24
    ThreadsPerChild 25
    MaxRequestsPerChild 0
    ThreadStackSize 8196
    <IfVersion >= 2.4>
        MaxRequestWorkers 1000
        MaxConnectionsPerChild 0
    </IfVersion>
    <IfVersion < 2.4>
        MaxClients 2000
        MaxRequestsPerChild 0
    </IfVersion>

    SendBufferSize 65536
    ReceiveBufferSize 65536
</IfModule>

Include /opt/configs/apache/conf/defaults/*.conf
Include /opt/configs/apache/conf/domains/*.conf

but load it way too high !!! I use 6-core Core i7 990x 3.47 GHz, 24 GB DDR3, 2x 240 GB SSD for system/MariaDB + 2x 3 TB for /home

[Spacedust]

Load seems to be fine now. We will see if it will crash again during the night. Mustafa you must check if ~lxcenter.conf isn't overwritten to default when running /script/fixweb.

[MRatWork]

In latest Kloxo-MR 7, MaxClients always no more than 400.

[Spacedust]

It's about ServerLimit not MaxClients. This night all was working fine.

[MRatWork]

I was change 'apache optimize' calculation with default, low, medium and high options.

[Spacedust]

OK - I will test it