Re: mod_fcgid: does FcgidMinProcessesPerClass work?

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OH, nevermind me. I cant read. I'm talking about Max, not Min. I have no experience with Min.

I tried Min on my test server and it didn't work for me, so I can at least confirm you aren't crazy :)

=================================================
Steven Barre, RHCE
steven@xxxxxxxxxxxxxxxxxxxxxxxx

Systems Administrator
Real Estate Webmasters - 250-753-9893
==================================================

On 2015-12-28 11:28, Kevin Burnett wrote:
i'm using apache 2.4.7, mod_fcgid 2.3.9, and ubuntu 14.04.3.
FcgidMinProcessesPerClass is supposed to provide a floor, such that no
*fewer* than that number of workers will run. did you mean fewer when
you said "can confirm I don't get more than FcgidMinProcessesPerClass
PHP workers on that site"? i'm not using SuExec, so my setup is more
vanilla mod_fcgid running the application as the www-data user.

On Mon, Dec 28, 2015 at 2:18 PM, Steven Barre
<steven@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:
What versions are you using? I've got
Server Version: Apache/2.2.15 (Unix) mod_fcgid/2.3.9 running on CentOS 6

I'm also using SuExec to run each domain as a separate user with a separate
wrapper.

https://bz.apache.org/bugzilla/show_bug.cgi?id=49902 mentions that

In mod_fcgid-2.2 processess started by fcgiwrapper were of the same class if
they were run with same wrapper by the same owner.

In mod_fcgid-2.3 these processess have different class also if they are run
in  different virtual hosts.

But it looks like they fixed the bug in 2.3.7.

I just ran a test with a php script doing sleep(10); and can confirm I don't
get more than FcgidMinProcessesPerClass PHP workers on that site.

=================================================
Steven Barre, RHCE
steven@xxxxxxxxxxxxxxxxxxxxxxxx

Systems Administrator
Real Estate Webmasters - 250-753-9893
==================================================

On 2015-12-28 10:39, Kevin Burnett wrote:

Thanks for the response, Steven. Alas, it is supposed to work anywhere
in server config, per the docs, and I added it to the VirtualHost
section of the app in question
(https://github.com/burnettk/repro-mod-fcgid-bug/commit/f03d29d6ab939f67c22b6d03f6eeced259a5aec3),
and it still doesn't seem to keep five processes running.

On Mon, Dec 28, 2015 at 12:30 PM, Steven Barre
<steven@xxxxxxxxxxxxxxxxxxxxxxxx> wrote:

I've found it works when defined inside a VirtualHost section, but not when
defined globally in a server conf file.

=================================================
Steven Barre, RHCE
steven@xxxxxxxxxxxxxxxxxxxxxxxx

Systems Administrator
Real Estate Webmasters - 250-753-9893
==================================================


On 2015-12-28 09:21, Kevin Burnett wrote:

Greetings,

If I set FcgidMinProcessesPerClass to 5, it doesn't maintain 5
application worker processes at apache startup time or otherwise. It
starts with 0 workers, when I hit the app with one curl, it starts up
one, and when I hit the app with 10 concurrent connections, it fires
up nine workers, which are reaped after FcgidIdleTimeout, bringing the
count back down to 1 (docs for FcgidIdleTimeout claim it should
respect FcgidMinProcessesPerClass). Keeping the count below a defined
limit via FcgidMaxProcessesPerClass seems to work fine. But its sister
property, FcgidMinProcessesPerClass, documented at

http://httpd.apache.org/mod_fcgid/mod/mod_fcgid.html#fcgidminprocessesperclass,
doesn't behave as I would expect.

I'm running a rails 4.2 app on apache 2.4.7, mod_fcgid 2.3.9, and
ubuntu 14.04.3. I created this docker project to demonstrate what I'm
seeing:
https://github.com/burnettk/repro-mod-fcgid-bug/blob/master/README.md.
You can dig around in the github project or actually fire up the
docker container following the steps in the README and inspect all of
the configs I haven't explicitly defined.

So I'm wondering if FcgidMinProcessesPerClass works for anyone else (I
decided to start here before filing a bug), and, if it can work, if
you can spot the misconfiguration preventing it from working in the
above steps.

Thanks!
KB

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