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2c8c9d68d7
Changed --with-zeus configure option into --with-isapi, since its more descriptive (and since there are now different ways to configure PHP+Zeus)
127 lines
4.3 KiB
Plaintext
127 lines
4.3 KiB
Plaintext
Using PHP4 with the Zeus Web Server
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-----------------------------------
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Zeus fully supports running PHP in combination with our
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webserver. There are three different interfaces that can be used to
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enable PHP:
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* CGI
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* ISAPI
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* FastCGI
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Of the three, we recommend using FastCGI, which has been tested and
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benchmarked as providing the best performance and reliability.
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Full details of how to install PHP are available from our
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website, at:
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http://support.zeus.com/products/php.html
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If you have any problems, please check the support site for more
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up-to-date information and advice.
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Quick guide to installing FastCGI with Zeus
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-------------------------------------------
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Step 1 - obtain and install FastCGI development kit.
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Grab the package from:
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http://www.fastcgi.com/dist/devkit_2.2.0.tar.gz
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Extract the package and follow the instructions:
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./configure
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make
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make export
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(run the last as root)
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This will install to /usr/local/lib/libfcgi.a
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and /usr/local/include/*fcgi*
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Step 2 - Compile PHP as FastCGI.
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Compile as follows:
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./configure --with-fastcgi
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make
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Note that PHP has many options to the configure script -
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e.g. --with-mysql. You will probably want to select your usual options
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before compiling; the above is just a bare minimum, for illustration.
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After compilation finishes, you will be left with an executable
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program called 'php'. Copy this into your document root, under a
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dedicated FastCGI directory (e.g. $DOCROOT/fcgi-bin/php)
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Step 3 - configure Zeus
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Four stages:
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- enable FastCGI
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- configure FastCGI
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- setup alias for FastCGI
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- setup alias for PHP
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1) Using the admin server, go to the 'module configuration' page for
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your virtual server, and ensure that 'fastcgi' is enabled (select the
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tickbox to the left).
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2) While we can run FastCGI's locally, there are known problems with
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some OS's (specifically, the communication between web server and
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FastCGI happens over a unix domain socket, and some OS's have trouble
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sustaining high connection rates over these sockets). So instead, we
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are going to set up the PHP FastCGI to run 'remotely' over localhost
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(this uses TCP sockets, which do not suffer this problem). Go to the
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'fastcgi configuration' page, and under 'add remote fastcgi':
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Add Remote FastCGI
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Docroot path /fcgi-bin/php
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Remote machine localhost:8002
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The first entry is where you saved PHP, above.
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The second entry is localhost:<any unused port>
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We will start the FastCGI listening on this port shortly.
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Click 'update' to commit these changes.
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3) Go to the path mapping module and add an alias for FastCGI:
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Add Alias
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Docroot path /fcgi-bin
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Filesystem directory /path/to/docroot/fcgi-bin
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Alias type fastcgi
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Click 'update' to commit these changes
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4) Also on the path mapping module, add a handler for PHP:
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Add handler
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File extension php
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Handler /fcgi-bin/php
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Click 'update' to commit these changes
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Finally restart your virtual server for these changes to take effect.
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Step 4 - start PHP as a FastCGI runner
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When you start PHP, it will pre-fork a given number of child processes
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to handle incoming PHP requests. Each process will handle a given
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number of requests before exiting (and being replaced by a newly
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forked process). You can control these two parameters by setting the
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following environment variables BEFORE starting the FastCGI runner:
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PHP_FCGI_CHILDREN - the number of child processes to pre-fork. If not
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set, defaults to 8.
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PHP_FCGI_MAX_REQUESTS - the number of requests each PHP child process
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handles before exiting. If not set, defaults to 500.
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To start the FastCGI runner, execute '$ZEUSHOME/web/bin/fcgirunner
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8002 $DOCROOT/fcgi-bin/php'. Substitute the appropriate values for
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$ZEUSHOME and $DOCROOT; also substitute for 8002 the port you chose,
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above.
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To stop the runner (e.g. to experiment with the above environment
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variables) you will need to manually stop and running PHP
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processes. (Use 'ps' and 'kill'). As it is PHP which is forking lots
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of children and not the runner, Zeus unfortunately cannot keep track
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of what processes are running, sorry. A typical command line may look
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like 'ps -efl | grep $DOCROOT/fcgi-bin/php | grep -v grep | awk
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'{print $4}' | xargs kill'
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