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From: Jim Jagielski <jim@jaguNET.com>
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Date: Thu, 2 Mar 2017 06:30:55 -0500
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 <9B090AB7-A946-4D69-9709-4A062E62649D@jaguNET.com>
 <2D753FF4-CD7F-4904-8AA6-447B56DB4BC3@eroi.com>
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To: users@httpd.apache.org
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Message-Id: <5BF250E1-5826-4BBD-850D-D0A38A82D028@jaguNET.com>
Subject: Re: [users@httpd] Apache Crashing Everyday
archived-at: Thu, 02 Mar 2017 11:35:33 -0000

Depending on your version of Tomcat it might be better to move to
using mod_proxy_ajp or even switching to Tomcat's http listener and
talking HTTP.

> On Mar 2, 2017, at 1:55 AM, Jayaram Ponnusamy =
<jayaram.ponnusamy@gmail.com> wrote:
>=20
> Hi Jim & Jason,
>=20
> Yes We are planning to upgrade to httpd 2.4.25 (Stable Version). So, =
in the 2.4.25 also we should use mod_jk to connect with Tomcat or =
anyother better options are there?
> Tomcat instances are running on different machines.
> And mod_php is not configured.
> Thanks=20
>=20
>=20
> On Wed, Mar 1, 2017 at 9:19 PM, Jason Brooks <jason.brooks@eroi.com> =
wrote:
> Hello,
>=20
> You will also need to turn off mod_php if it=E2=80=99s loaded.
>=20
> =E2=80=94jason
>=20
> Jason Brooks	Systems Administrator
> eROI	Performance is Art.
> =20
> m:	505 nw couch #300	w:	eroi.com
> t:	503.290.3105	f:	503.228.4249
>=20
>=20
> fb:	fb.com/eROI
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>=20
>> On Mar 1, 2017, at 8:35 AM, Jim Jagielski <jim@jaguNET.com> wrote:
>>=20
>> If you can, I would upgrade to httpd 2.4.x... If you must
>> stay w/ 2.2.x, then Worker might be more reliable for you
>> than Event.
>>=20
>>> On Mar 1, 2017, at 9:56 AM, Jayaram Ponnusamy =
<jayaram.ponnusamy@gmail.com> wrote:
>>>=20
>>> Thanks Jim for the suggestion.
>>> I will update
>>> Timeout 5
>>> KeepAliveTimeout 2
>>>=20
>>> We are using Apache 2.2.23
>>> We will try to install Event MPM and will check.
>>> Thanks
>>> Jay
>>>=20
>>>=20
>>>=20
>>> On Mar 1, 2017 5:05 PM, "Jim Jagielski" <jim@jagunet.com> wrote:
>>> You should not be using prefork unless you really, really need to.
>>>=20
>>> Assuming you are running 2.4.x, I would strongly suggest running
>>> the Event MPM.
>>>=20
>>> Your Timeout and KeepAliveTimeout values are also way too big;
>>> I'd recommend 5 and 2, respectively.
>>>=20
>>>> On Mar 1, 2017, at 4:19 AM, Jayaram Ponnusamy =
<jayaram.ponnusamy@gmail.com> wrote:
>>>>=20
>>>> Dear All,
>>>>=20
>>>> We are using 2 Apache & 2 Tomcat with LoadBalance. Everyday the =
site is goes down and restarting Apache & Tomcat only help to bring the =
site back.
>>>>=20
>>>> I could see below errors on WebServer's Error Log, when the "total =
children" count increased more than 200 then Apache is not responding. I =
have included my prefork configuration below. Kindly please help to =
resolve this issue.
>>>>=20
>>>> [Wed Mar 01 11:46:39 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 8 children, =
there are 1 idle, and 464 total children
>>>> [Wed Mar 01 11:47:25 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 8 children, =
there are 0 idle, and 507 total children
>>>> [Wed Mar 01 11:47:34 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 8 children, =
there are 0 idle, and 522 total children
>>>> [Wed Mar 01 11:47:35 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 16 children, =
there are 3 idle, and 530 total children
>>>> [Wed Mar 01 11:48:22 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 8 children, =
there are 0 idle, and 578 total children
>>>> [Wed Mar 01 11:48:23 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 16 children, =
there are 0 idle, and 586 total children
>>>> [Wed Mar 01 11:48:24 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 602 total children
>>>> [Wed Mar 01 11:48:25 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 634 total children
>>>> [Wed Mar 01 11:48:26 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 666 total children
>>>> [Wed Mar 01 11:48:27 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 698 total children
>>>> [Wed Mar 01 11:48:28 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 730 total children
>>>> [Wed Mar 01 11:48:29 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 762 total children
>>>> [Wed Mar 01 11:48:30 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 794 total children
>>>> [Wed Mar 01 11:48:31 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 826 total children
>>>> [Wed Mar 01 11:48:32 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 858 total children
>>>> [Wed Mar 01 11:48:33 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 32 children, =
there are 0 idle, and 890 total children
>>>> [Wed Mar 01 11:49:08 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 8 children, =
there are 0 idle, and 944 total children
>>>> [Wed Mar 01 11:49:09 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 16 children, =
there are 2 idle, and 952 total children
>>>> [Wed Mar 01 11:50:14 2017] [info] server seems busy, (you may need =
to increase StartServers, or Min/MaxSpareServers), spawning 8 children, =
there are 3 idle, and 934 total children
>>>>=20
>>>>=20
>>>> mod_jk.log
>>>> [Wed Mar 01 11:58:14 2017][24547:2663257856] [info] =
jk_open_socket::jk_connect.c (594): connect to 100.10.661.32:8009 failed =
(errno=3D110)
>>>> [Wed Mar 01 11:58:14 2017][24547:2663257856] [info] =
ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to =
(100.10.661.32:8009) (errno=3D110)
>>>> [Wed Mar 01 11:58:14 2017][24547:2663257856] [error] =
ajp_send_request::jk_ajp_common.c (1507): (live_svr) connecting to =
backend failed. Tomcat is probably not started or is listening on the =
wrong port (errno=3D110)
>>>> [Wed Mar 01 11:58:14 2017][24547:2663257856] [info] =
ajp_service::jk_ajp_common.c (2447): (live_svr) sending request to =
tomcat failed (recoverable), because of error during request sending =
(attempt=3D1)
>>>> [Wed Mar 01 11:58:14 2017][24318:2663257856] [info] =
jk_open_socket::jk_connect.c (594): connect to 100.10.661.32:8009 failed =
(errno=3D110)
>>>> [Wed Mar 01 11:58:14 2017][24318:2663257856] [info] =
ajp_connect_to_endpoint::jk_ajp_common.c (922): Failed opening socket to =
(100.10.661.32:8009) (errno=3D110)
>>>> [Wed Mar 01 11:58:14 2017][24318:2663257856] [error] =
ajp_send_request::jk_ajp_common.c (1507): (live_svr) connecting to =
backend failed. Tomcat is probably not started or is listening on the =
wrong port (errno=3D110)
>>>> [Wed Mar 01 11:58:14 2017][24318:2663257856] [info] =
ajp_service::jk_ajp_common.c (2447): (live_svr) sending request to =
tomcat failed (recoverable), because of error during request sending =
(attempt=3D1)
>>>> [Wed Mar 01 11:58:14 2017][24282:2663257856] [info] =
jk_open_socket::jk_connect.c (594): connect to 100.10.661.32:8009 failed =
(errno=3D110)
>>>> =
--------------------------------------------------------------------------=
-----
>>>> httpd.conf:
>>>> KeepAlive On
>>>> Timeout 300
>>>> MaxKeepAliveRequests 100
>>>> KeepAliveTimeout 15
>>>>=20
>>>> <IfModule prefork.c>
>>>> StartServers      80
>>>> ServerLimit   3500
>>>> MaxClients    3500
>>>> MaxRequestsPerChild  0
>>>> </IfModule>
>>>>=20
>>>> mod_jk.conf:
>>>> <IfModule worker.c>
>>>> StartServers 6
>>>> MaxClients 230
>>>> MinSpareThreads 75
>>>> MaxSpareThreads 150
>>>> ThreadsPerChild 25
>>>> MaxRequestsPerChild 0
>>>> </IfModule>
>>>>=20
>>>> Daily 20K Plus People will visit our sites. Kindly please provide =
the solution to resolve this issue.
>>>>=20
>>>> --
>>>> Thanks & Regards,
>>>>=20
>>>> Jayaram Ponnusamy
>>>>=20
>>>=20
>>>=20
>>> =
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>>>=20
>>>=20
>>=20
>>=20
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>>=20
>=20
>=20
>=20
>=20
> --=20
> Thanks & Regards,
>=20
> Jayaram Ponnusamy=20
>=20


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