install

Installing PHP APC On RHEL/CentOS

  1. Yum up some packages:

    ``` yum install php-pear php-devel httpd-devel

          </td>
        </tr>
      </table>
    </div>
    
    2. Install APC using pear (the pear installer is smarter than the pecl installer):
      
    When the installer asks about APXS, say ‘no’. </p> <div class="wp_syntax">
      <table>
        <tr>
          <td class="code">
            ```
    pear install pecl/apc
    
      </td>
    </tr>
    

  2. Tell PHP to load APC:

    ``` echo extension=apc.so > /etc/php.d/apc.ini

          </td>
        </tr>
      </table>
    </div>
    
    4. Restart Apache: <div class="wp_syntax">
      <table>
        <tr>
          <td class="code">
            ```
    /sbin/service httpd graceful
    
      </td>
    </tr>
    

Installing memcached On CentOS/RHEL

Using info from CentOS forums, Sunny Walia and Ryan Boren, here’s how I got memcached running on my Dotster VPS:

Install libevent:

``` wget http://www.monkey.org/~provos/libevent-1.3e.tar.gz tar zxvf libevent-1.3e.tar.gz cd libevent-1.3e   ./configure make make install ```

Install memcached

``` wget http://danga.com:80/memcached/dist/memcached-1.2.5.tar.gz tar zxvf memcached-1.2.5.tar.gz cd memcached-1.2.5   ./configure make make install ```

We will start the server to use 30 megs of ram (-m 30), listen on ip 127.0.0.1 (-l 127.0.0.1) and run on port 11211 (-p 11211) as user ‘nobody’ (-u nobody):

``` memcached -u nobody -d -m 30 -l 127.0.0.1 -p 11211 ```

Get an error?

``` memcached: error while loading shared libraries: libevent-1.3e.so.1: cannot open shared object file: No such file or directory ```

Show it the path to the library:

``` LD_LIBRARY_PATH=/usr/local/lib export LD_LIBRARY_PATH ```

JSON on RHEL & PHP 5.1.6

Stuck with PHP 5.1.6 on RHEL or even CentOS (and a sysadmin who insists on using packages)? Need JSON? I did. The solution is easy:

yum install php-devel<br /> pecl install json

The pecl install failed when it hit an 8MB memory limit, and I was clueless about how to fix it until I learned that the pecl installer ignores the php.ini. Turns out the best solution is to use the pear installer (which does follow php.ini settings):

pear install pecl/json