I wonder if anyone has needed to use 'upstart'?
one of my services
description "Php workers for my site" author "izo" start on startup stop on shutdown respawn script sudo -u www-data /opt/php-5614/bin/php -f /var/www/html/workers/run_worker.php >> /var/log/run_worker.log end script
With OPcache, bootstrap of the application with it's ENV should not put too much overhead, i.e. your index.php, loader.php, services.php etc. will be cached and served from RAM after they got first hit.
If you guys have a chance to work with some shitware like Magento(2), you'll see what it means to run with a shitload of overhead. In LAN 1Gbps env, it cannot load page below 1 second (1000 ms). Phalcon does it with 12ms. Raw PHP 5ms. :) Same VM with 4 cores @4200Mhz.
#!/bin/bash //php -v or whatever you need
//remove this and keep this line blank at the 1st row [Unit] Description=Php workers Wants=network.target After=network.target [Service] User=www-data Group=www-data Restart=always StandardOutput=syslog StandardError=syslog ExecStart=/usr/local/bin/systemd-email [Install] WantedBy=multi-user.target
service phpworkers stop/start/status
Are you sure your example is correct? You're executing email systemd service/unit? Why? :S
This is unit definition for PHP:
cat /lib/systemd/system/php7.0-fpm.service [Unit] Description=The PHP 7.0 FastCGI Process Manager After=network.target [Service] Type=notify PIDFile=/run/php/php7.0-fpm.pid ExecStartPre=/usr/lib/php/php7.0-fpm-checkconf ExecStart=/usr/sbin/php-fpm7.0 --nodaemonize --fpm-config /etc/php/7.0/fpm/php-fpm.conf ExecReload=/usr/lib/php/php7.0-fpm-checkconf ExecReload=/bin/kill -USR2 $MAINPID [Install] WantedBy=multi-user.target
what I understood was how to create a service that starts with system and restart itself when error happen. Maybe i am wrong ...
I am using my script and its working and the only difference i saw was they have som eextra steps in fpm. probably they are killing zombies in reload or something like that.
No, basic idea is to have a daemonized application. That way, all defined services, configuration, etc. are loaded only once during initial run @reboot). The process keeps running permanently as a daemon on the server (background), and ready to accept work from web server. Similar to PHP-FPM worker processes but only with full bootstrap initialized and kept in RAM as @Jurigag already described here.