PHP-FPM Switch from TCP to UNIX domain sockets

straight from https://plus.google.com/b/104831941868856035845/113497966974166918390/posts/3oSoWwRvPqz

FYI, the way the automated menu stuff is done in Centmin Mod it relies or assumes PHP-FPM uses TCP. You can try switching but it might auto revert on PHP updates to TCP

To switch from TCP to Unix sockets need to edit 2 files

Both can be edited using command shortcuts outlined in FAQ 16 at http://centminmod.com/faq.html

edit /usr/local/etc/php-fpm.conf (fpmconf)

comment out with semicolon the line

from

Code:

listen = 127.0.0.1:9000

to

Code:

;listen = 127.0.0.1:9000

uncomment the line

from

Code:

;listen = /tmp/php5-fpm.sock

to

Code:

listen = /tmp/php5-fpm.sock

edit /usr/local/nginx/conf/php.conf (phpinc)

uncomment the line

from

Code:

    fastcgi_pass   127.0.0.1:9000;
    #fastcgi_pass   unix:/tmp/php5-fpm.sock;

to

Code:

    #fastcgi_pass   127.0.0.1:9000;
    fastcgi_pass   unix:/tmp/php5-fpm.sock;

Then restart PHP-FPM

Code:

service php-fpm restart

or via command shortcut

Code:

fpmrestart

 

You can try it out, just need to create additional PHP-FPM pools and their conf files in /usr/local/nginx/conf/phpfpmd/. There's a sample second pool in zip download at /config/php-fpm/php-fpm-min-2pools.conf to work off of - just look at the settings from the second pool downwards after and including the [www2] line or as below.

Of course tuning each PHP-FPM pool optimally within the confines of your server resources and site usage requirements is left up to you

Code:

[www2]
user = nginx
group = nginx

listen = 127.0.0.1:9001
listen.allowed_clients = 127.0.0.1
;listen.backlog = -1

;listen = /tmp/php5-fpm2.sock
;listen.owner = nobody
;listen.group = nobody
;listen.mode = 0666

pm = dynamic
pm.max_children = 5
; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
pm.start_servers = 1
pm.min_spare_servers = 1
pm.max_spare_servers = 3
pm.max_requests = 5000

rlimit_files = 65536
rlimit_core = 0

; The timeout for serving a single request after which the worker process will
; be killed. This option should be used when the 'max_execution_time' ini option
; does not stop script execution for some reason. A value of '0' means 'off'.
; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
; Default Value: 0
;request_terminate_timeout = 0
; Default Value: 0
;request_slowlog_timeout = 0
slowlog = /var/log/php-fpm/www-slow2.log

pm.status_path = /phpstatus2
ping.path = /phpping2
ping.response = pong

; Limits the extensions of the main script FPM will allow to parse. This can
; prevent configuration mistakes on the web server side. You should only limit
; FPM to .php extensions to prevent malicious users to use other extensions to
; exectute php code.
; Note: set an empty value to allow all extensions.
; Default Value: .php
security.limit_extensions = .php .php3 .php4 .php5

Centmin Mod does have plans in place for multiple PHP-FPM pools as such for both TCP and Unix sockets

edit: changed the following lines

Code:

pm.status_path = /phpstatus2
ping.path = /phpping2

 

whoops yeah missed that, updated https://community.centminmod.com/threads/switch-from-tcp-to-unix-domain-sockets.307/#post-1431

 

yeah doh.. mixed them up heh

fixed https://community.centminmod.com/threads/switch-from-tcp-to-unix-domain-sockets.307/#post-1431

 

which you tried switching to Unix socket or 2nd pool ?

for 2nd pool might need to change

Code:

;listen.owner = nobody
;listen.group = nobody

to

Code:

listen.owner = nginx
listen.group = nginx

 

in /usr/local/etc/php-fpm.conf (fpmconf) you might need to

change

Code:

;listen.owner = nobody
;listen.group = nobody

to

Code:

listen.owner = nginx
listen.group = nginx

 

Actually started testing what is outlined at http://www.softwareprojects.com/res...-and-php-fpm-for-high-traffic-sites-2081.html myself on this forum using the above outlined steps.

Upstream load balancing between TCP port 9000 and 1x php-fpm Unix socket. Unix socket isn't as stable under high loads, so gave TCP a 75% weighting and PHP-FPM unix socket a 25% weighting and you can see some PHP-FPM stats at https://community.centminmod.com/pages/mstats/.

Used Blitz.io for stress testing the forums but didn't have enough free credits at Blitz.io to complete testing, so no conclusive results and have to wait until next month when the free credits start over (each month) and will try and see what happens if I add a 2nd or more PHP-FPM unix sockets to the upstream mix.

 

Finished testing using php-fpm unix sockets and no where near as stable as TCP, so switched to testing multiple TCP php-fpm pools

 

basically same as above just

instead of within each php-fpm pool /usr/local/nginx/conf/phpfpmd/YOURNEWPHPPOOLNAME.conf file

Code:

#fastcgi_pass   127.0.0.1:9000;
fastcgi_pass   unix:/tmp/php5-fpm.sock;

you specify a different TCP port each with own unique paths

Code:

fastcgi_pass   127.0.0.1:9001;
slowlog = /var/log/php-fpm/www-slow2.log

pm.status_path = /phpstatus2
ping.path = /phpping2