linux - Managing php daemon -

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how can manage daemon web without changing simple cli runtime php-fpm?

the daemon starts automatically after os starts , works cli-application without php-fpm pool. basic ideology of daemon eco-system work without php-fpm pool (cli-sapi).

server configuration:

  1. debian 7
  2. apache 2.2
  3. php5-fpm (v 5.4.35) — mod_fastcgi
  4. daemon.php
  5. daemon_manager.php — management script start|stop|restart|kill daemon.php command line.
  6. daemon_manager_web.php — administrator script managing daemon browser.

daemon.php regular php daemon this:

<?php     declare(ticks=1);     ini_set("max_execution_time", "0");     ini_set("max_input_time",     "0");     set_time_limit(0);     /* catching signals */     function sig_handler($signo) {         switch ($signo) {             case sigquit:             case sigterm:                 // work         pcntl_wait($status);                 break;             //...         }     }      pcntl_signal(sigterm, 'signal_handler');     pcntl_signal(sigquit, 'signal_handler');      $newpid = pcntl_fork();     if ($newpid == -1) {         throw new exception('cannot fork porcess');     } elseif ($newpid) {         print "starting daemon under pid=$newpid\n";         // ...         exit;     }

the problem.

since pcntl-functions not available web, manage daemon functions such exec(), shell_exec(). when stop , start daemon again using daemon_manager_web.php browser starts works under php-fpm pool.

processes list before restart:

$ ps aux | grep php root      5952  0.0  2.9  69008 14952 pts/0    s    14:24   0:00 php /var/www/daemon.php  $ service php5-fpm status php5-fpm.service - lsb: starts php5-fpm       loaded: loaded (/etc/init.d/php5-fpm)       active: active (running) since fri, 05 dec 2014 11:28:25 +0200; 11h ago      process: 1003 execstart=/etc/init.d/php5-fpm start (code=exited, status=0/success)       cgroup: name=systemd:/system/php5-fpm.service               ├ 1627 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)               ├ 9562 php-fpm: pool www               ├ 9605 php-fpm: pool www               └ 9633 php-fpm: pool www

processes list after restart browser:

$ service php5-fpm status php5-fpm.service - lsb: starts php5-fpm       loaded: loaded (/etc/init.d/php5-fpm)       active: active (running) since fri, 05 dec 2014 11:28:25 +0200; 11h ago      process: 1003 execstart=/etc/init.d/php5-fpm start (code=exited, status=0/success)       cgroup: name=systemd:/system/php5-fpm.service               ├ 1627 php-fpm: master process (/etc/php5/fpm/php-fpm.conf)               ├ 4987 php-fpm: pool www               ├ 5040 php-fpm: pool www               ├ 9432 php-fpm: pool www               └ 9492 /usr/bin/php /var/www/daemon.php

you should not start daemon via apache in way. proper way start daemon such (managed by, say, supervisord, have pretty track record using in production) , opening file socket (af_unix) on socket_select() , idle-wait input triggers processing. way, "interface" (on apache) connects sockets , writes it.

on topic, i've found writing daemons in php quite tedious , might want choose library handle nitty-gritty (cannot recommend any) or tool more suitable event loop typical of daemons (node.js?)


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