PHP-FPM questions

legendary — Thu, 15 Dec 2022 14:09:01 +0000

What a beast of a software... Documentation in php.net is obscure to the max, some configs not documented at all. I have few question, which I couldn't google.

Example (Apache2 + PHP-FPM 8.1) CFG:

[global]
pid = /run/php/php8.1-fpm.dronten.pid

[dronten]
        user = dronten
        group = dronten
        listen = /run/php/php8.1-fpm.dronten.sock
        listen.owner = www-data
        listen.group = www-data
        listen.mode = 0660
        pm = dynamic
        pm.max_children = 5
        pm.start_servers = 2
        pm.min_spare_servers = 1
        pm.max_spare_servers = 3

include = /etc/php/shared-values.inc

Shared-values.inc content:

php_admin_value[session.save_path]    = "/var/lib/php/sessions/$pool"
php_admin_value[soap.wsdl_cache_dir]  = "/var/lib/php/wsdlcache/$pool"
php_admin_value[opcache.file_cache]  = "/var/lib/php/opcache/$pool"


listen.allowed_clients = 127.0.0.1

access.log = /var/log/php-fpm/$pool.access
access.format = "%{REMOTE_ADDR}e - %u %t \"%m %r%Q%q\" %s %f %{seconds}d %{mega}M %{user}C%%"

slowlog = /var/log/php-fpm/$pool.slow

Issues/questions:

Is it possible to restart/reload pool instead of entire php-fpm? I have user "dronten" and separate pool cfg. I want to restart/reload only this user, leaving all other users intact.
Custom session.save_path not working. There is no sessions created in that folder. PHPinfo shows correct session path. Where the f... is session files?
OPcache security problem with shared pool should be resolved by setting separate session path. Am I correct?

session — LowEndSpirit

PHP-FPM questions