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