How to setup php5 and eAccelerator on a cpanel/RHEL server



To install/upgrade php5 on cpanel server
(see: http://forums.cpanel.net/showthread.php?t=37728)

The steps were:
cd /usr/lib/mysql
rename .a .a_old *.a
rename .la .la_old *.la

Then run /scripts/easyapache

Then rename these files back.
cd /usr/lib/mysql
rename .a_old .a *.a_old
rename .la_old .la *.la_old



To install eAccellerator:
(see: http://forum.ev1servers.net/showthread.php?t=54479)

up2date php-devel
cd /root
wget http://cogent.dl.sourceforge.net/sourceforge/eaccelerator/eaccelerator-0...
tar -xvzf eaccelerator-0.9.3.tar.gz
cd eaccelerator*

export PHP_PREFIX="/usr"
$PHP_PREFIX/bin/phpize
./configure --enable-eaccelerator=shared --with-php-config=$PHP_PREFIX/bin/php-config
make
make install

php eaccelerator_password.php
mkdir /tmp/eaccelerator
chmod 0777 /tmp/eaccelerator

cp /root/eaccelerator*/eaccelerator.php /usr/local/apache/htdocs/


Edit /usr/local/lib/php.ini
- Find the following at approximately the middle of the file:

Code:
;;;;;;;;;;;;;;;;;;;;;;
; Dynamic Extensions ;
;;;;;;;;;;;;;;;;;;;;;;

Add this: (use the password hash generated by 'php eaccelerator_password.php' above)

Code:
zend_extension="/usr/lib/php/extensions/no-debug-non-zts-20041030/eaccelerator.so"
eaccelerator.shm_size="32"
eaccelerator.cache_dir="/tmp/eaccelerator"
eaccelerator.enable="1"
eaccelerator.optimizer="1"
eaccelerator.check_mtime="1"
eaccelerator.debug="0"
eaccelerator.filter=""
eaccelerator.shm_max="0"
eaccelerator.shm_ttl="3600"
eaccelerator.shm_prune_period="180"
eaccelerator.shm_only="1"
eaccelerator.compress="1"
eaccelerator.compress_level="9"
        
eaccelerator.admin.name="your_admin_name"
eaccelerator.admin.password="your_admin_password_hash"


Re-start httpd
/etc/init.d/httpd restart


Make sure it's working.

Go to http://your-server-domain-or-ip/phpinfo.php and look for "Zend Technologies with eAccelerator" in the credits, and an eAccelerator section.

Go to http://your-server-domain-or-ip/eaccelerator.php and see your cache info and options.


*** Notes ***
Q: Apache: How can i disable eaccelerator on a particular virtualhost ?

A: Just put php_flag eaccelerator.enable 0 and php_flag eaccelerator.optimizer 0 in a .htaccess file in the document root of the virtualhost or directly inside <Virtualhost> apache section. 
eAccelerator Configuration Options (used in php.ini)
---------------------

eaccelerator.shm_size
    The amount of shared memory (in megabytes) that eAccelerator will use.
    "0" means OS default. Default value is "0".

eaccelerator.cache_dir
    The directory that is used for disk cache. eAccelerator stores precompiled
    code, session data, content and user entries  here. The same data  can  be
    stored in shared memory also (for more quick access). Default value is
    "/tmp/eaccelerator".

eaccelerator.enable
    Enables or disables eAccelerator. Should be "1" for enabling  or  "0"  for
    disabling. Default value is "1".

eaccelerator.optimizer
    Enables or disables internal peephole optimizer which may  speed  up  code
    execution. Should be "1" for enabling or "0" for disabling. Default  value
    is "1".

eaccelerator.debug
    Enables or disables debug logging. Should be "1" for enabling or  "0"  for
    disabling. Default value is "0".

eaccelerator.check_mtime
    Enables or disables PHP file modification checking .  Should  be  "1"  for
    enabling or "0" for disabling. You should set it to "1"  if  you  want  to
    recompile PHP files after modification. Default value is "1".

eaccelerator.filter
    Determine which PHP files must be cached. You may specify  the  number  of
    patterns (for example "*.php *.phtml") which specifies to cache or not  to
    cache. If pattern starts with the character "!", it means to ignore  files
    which are matched by the following pattern. Default value is "" that means 
    all PHP scripts will be cached.

eaccelerator.shm_max
    Disables putting large values into shared memory by " eaccelerator_put() "
    function. It indicates the largest allowed size in bytes (10240, 10K, 1M). 
    The "0" disables the limit. Default value is "0".

eaccelerator.shm_ttl
    When eaccelerator fails to get shared memory for new script it removes all
    scripts which were not accessed  at  last "shm_ttl"  seconds  from  shared
    memory. Default value is "0" that means -  don't  remove  any  files  from
    shared memory.

eaccelerator.shm_prune_period
    When eaccelerator fails to get shared memory for new script  it  tryes  to
    remove  old  script   if   the   previous   try   was   made   more   then
    "shm_prune_period" seconds ago. Default value is "0" that  means  -  don't
    try to remove any files from shared memory.

eaccelerator.shm_only
    Enables or disables caching of compiled scripts on disk. It has  no  effect
    on session data and content caching. Default value is "0" that means -  use
    disk and shared memory for caching.

eaccelerator.compress
    Enables or disables cached content compression. Default value is  "1"  that
    means enable compression.

eaccelerator.compress_level
    Compression level used for content caching.  Default value is "9" which  is
    the maximum value
    
eaccelerator.keys
eaccelerator.sessions
eaccelerator.content
    Determine where keys, session data and content will be cached. The possible
    values are:
    "shm_and_disk" - cache data in shared memory and on disk (default value)
    "shm"          - cache data in shared memory or on disk if shared memory
                     is full or data size greater then "eaccelerator.shm_max"
    "shm_only"     - cache data in shared memory
    "disk_only"    - cache data on disk
    "none"         - don't cache data
add new comment
nbsp;