Re: problems with php5-fpm

[Alan Chandler <alan@chandlerfamily.org.uk>]

On 01/05/14 06:35, Alan Chandler wrote:
> On 01/05/14 03:51, Jerry Stuckle wrote:
> > On 4/30/2014 6:25 PM, Alan Chandler wrote:
> > > Hi
> > >
> > > I am experimenting with nginx and php5-fpm to replace an
> > > apache2/libapache2-mod-php configuration.  And I am getting something
> > > strange happening.
> > >
> > > I have both a simple php web site that just consists of php pages (and
> > > other assets) and static content.
> > >
> > > I also have a wordpress configuration.
> > >
> > > What I am finding after an idle period (do not actually know how 
> > > long it
> > > has to be, but I am leaving the web site and coming back after a couple
> > > of hours of doing something else) is that
> > >
> > > The static web site works,
> > > the wordpress web site doesn't - because it appears that php5-fpm is
> > > returning a 500
> > >
> > > php5-fpm still appears to be running with the right number of 
> > > processes.
> > >
> > > I can get the wordpress site to work if I restart php5-fpm.
> > >
> > > The question is why.  The main difference that wordpress site has is
> > > that it uses a mysql database.  But I have no idea why that might cause
> > > failures after an idle period.
> > >
> > > Anyone any other ideas?
> >
> > What's in your php log?  (This may or may not be the same log as your 
> > Apache log - it depends on your configuration).
> >
> > Jerry
> I have display_errors set to off, and log_errors set to on (I think 
> this is the default debian configuration).  However the only reference 
> in ANY (including mysql ) logs that I can find is the nginx access log 
> (/var/log/nginx/access)
>
> This shows the request with the 500 response.
>
> There is nothing in the php5-fpm.log, and I can't find where php is 
> logging things.
>
> I have just set display_errors on, and also explicitly defined a php 
> log file to see if I can capture more information.  Of course I had to 
> restart php5-fpm to do that, so my wordpress site is currently 
> working.  I need to leave it to time out and will report back when it 
> does
I am getting a clearer, but not yet complete, picture of what is 
happening by adding some echo statements to the php code.

Wordpress is dieing somewhere in the plugin super-cache.

php5-fpm seems to override php.ini settings with the ones from the 
pool.d/www.conf file.  That is why I wasn't seeing any logging. (at 
least I think that is why).

I have to give up for now.  But will try again this evening.


--
Alan Chandler
http://www.chandlerfamily.org.uk