Return to README.Zeus CVS log

Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / php

Annotation of embedaddon/php/README.Zeus, revision 1.1.1.1

1.1       misho       1: Using PHP 5 with the Zeus Web Server
                      2: -----------------------------------
                      3: 
                      4: Zeus fully supports running PHP in combination with our
                      5: webserver. There are three different interfaces that can be used to
                      6: enable PHP:
                      7: 
                      8: * CGI
                      9: * ISAPI
                     10: * FastCGI
                     11: 
                     12: Of the three, we recommend using FastCGI, which has been tested and
                     13: benchmarked as providing the best performance and reliability.
                     14: 
                     15: Full details of how to install PHP are available from our
                     16: website, at:
                     17: 
                     18: http://support.zeus.com/products/php.html
                     19: 
                     20: If you have any problems, please check the support site for more
                     21: up-to-date information and advice.
                     22: 
                     23: 
                     24: Quick guide to installing CGI/FastCGI with Zeus
                     25: -----------------------------------------------
                     26: 
                     27: Step 1 - Compile PHP as FastCGI.
                     28: 
                     29: Compile as follows:
                     30:         ./configure --enable-fastcgi
                     31:         make
                     32: 
                     33: Note that PHP has many options to the configure script -
                     34: e.g. --with-mysql. You will probably want to select your usual options
                     35: before compiling; the above is just a bare minimum, for illustration.
                     36: 
                     37: After compilation finishes, you will be left with an executable
                     38: program called 'php'. Copy this into your document root, under a
                     39: dedicated FastCGI directory (e.g. $DOCROOT/fcgi-bin/php)
                     40: 
                     41: 
                     42: Step 2 - configure Zeus
                     43: 
                     44: Four stages:
                     45:         -  enable FastCGI
                     46:         -  configure FastCGI
                     47:         -  setup alias for FastCGI
                     48:         -  setup alias for PHP
                     49: 
                     50: 1) Using the admin server, go to the 'module configuration' page for
                     51: your virtual server, and ensure that 'fastcgi' is enabled (select the
                     52: tickbox to the left).
                     53: 
                     54: 2) While we can run FastCGI's locally, there are known problems with
                     55: some OS's (specifically, the communication between web server and
                     56: FastCGI happens over a unix domain socket, and some OS's have trouble
                     57: sustaining high connection rates over these sockets). So instead, we
                     58: are going to set up the PHP FastCGI to run 'remotely' over localhost
                     59: (this uses TCP sockets, which do not suffer this problem). Go to the
                     60: 'fastcgi configuration' page, and under 'add remote fastcgi':
                     61:         Add Remote FastCGI
                     62:                 Docroot path            /fcgi-bin/php
                     63:                 Remote machine          localhost:8002
                     64: The first entry is where you saved PHP, above.
                     65: The second entry is localhost:<any unused port>
                     66: We will start the FastCGI listening on this port shortly.
                     67: Click 'update' to commit these changes.
                     68: 
                     69: 3) Go to the path mapping module and add an alias for FastCGI:
                     70:         Add Alias
                     71:                 Docroot path            /fcgi-bin
                     72:                 Filesystem directory    /path/to/docroot/fcgi-bin
                     73:                 Alias type              fastcgi
                     74: Click 'update' to commit these changes
                     75: 
                     76: 4) Also on the path mapping module, add a handler for PHP:
                     77:         Add handler
                     78:                 File extension          php
                     79:                 Handler                 /fcgi-bin/php
                     80: Click 'update' to commit these changes
                     81: 
                     82: Finally restart your virtual server for these changes to take effect.
                     83: 
                     84: 
                     85: Step 3 - start PHP as a FastCGI runner
                     86: 
                     87: When you start PHP, it will pre-fork a given number of child processes
                     88: to handle incoming PHP requests. Each process will handle a given
                     89: number of requests before exiting (and being replaced by a newly
                     90: forked process). You can control these two parameters by setting the
                     91: following environment variables BEFORE starting the FastCGI runner:
                     92: 
                     93: PHP_FCGI_CHILDREN - the number of child processes to pre-fork. This
                     94: variable MUST be set, if not then the PHP will not run as a FastCGI.
                     95: We recommend a value of 8 for a fairly busy site. If you have many,
                     96: long-running PHP scripts, then you may need to increase this further.
                     97: 
                     98: PHP_FCGI_MAX_REQUESTS - the number of requests each PHP child process
                     99: handles before exiting. If not set, defaults to 500.
                    100: 
                    101: To start the FastCGI runner, execute '$ZEUSHOME/web/bin/fcgirunner
                    102: 8002 $DOCROOT/fcgi-bin/php'.  Substitute the appropriate values for
                    103: $ZEUSHOME and $DOCROOT; also substitute for 8002 the port you chose,
                    104: above.
                    105: 
                    106: To stop the runner (e.g. to experiment with the above environment
                    107: variables) you will need to manually stop and running PHP
                    108: processes. (Use 'ps' and 'kill'). As it is PHP which is forking lots
                    109: of children and not the runner, Zeus unfortunately cannot keep track
                    110: of what processes are running, sorry. A typical command line may look
                    111: like 'ps -efl | grep $DOCROOT/fcgi-bin/php | grep -v grep | awk
                    112: '{print $4}' | xargs kill'