CentOS memcached Installation

1, installation Libevent

Install memcached before installing libevent

wget http://sourceforge.net/projects/levent/files/libevent/libevent-2.0/libevent-2.0.22-stable.tar.gz

Tar zxvf libevent-2.0.22-stable.tar.gz

CD libevent-2.0.22-stable

./configure

Make && make install

2, installation memcached

wget http://www.danga.com/memcached/dist/memcached-1.2.2.tar.gz

Tar zxvf memcached-1.2.7.tar.gz

CD memcached-1.2.7

./configure

Make && make install

Note: error when make is

MEMCACHED.C: In the function ' Add_iov ':

MEMCACHED.C:696:30: Error: ' Iov_max ' not declared (first use within this function)

MEMCACHED.C:696:30: NOTE: Each undeclared identifier is reported only once within the function in which it appears

MAKE[2]: * * [MEMCACHED-MEMCACHED.O] Error 1

You need to modify the Memcached.c file:

Copy Code

/* FreeBSD 4.x doesn ' t has iov_max exposed. */

#ifndef Iov_max

#if defined (__freebsd__) | | Defined (__apple__)

# define Iov_max 1024

#endif

#endif

Change to:

/* FreeBSD 4.x doesn ' t has iov_max exposed. */

#ifndef Iov_max

# define Iov_max 1024

#endif

Copy Code

Then Make&&make install and exit the root user after compiling.

memcached default directory is/usr/local/bin/memcached after installation is complete

3. Start memcached

/usr/local/bin/memcached-m 32m-p 11211-d-u root-p/var/run/memcached.pid-c 256

Start times the following error resolution method

/usr/local/bin/memcached:error while loading shared libraries:libevent-2.0.22.so.1:cannot open Shared object File:no s Uch file or directory

There's no way to find libevent-2.0.22.so's solution.

echo "/usr/local/lib" >>/etc/ld.so.conf

Ldconfig

Start parameter Description:
the-D option is to start a daemon.
- u root indicates that the user who initiated the memcached is root.
- M is the amount of memory allocated to Memcache, in megabytes, by default 64MB.
- m return error on memory exhausted (rather than removing items).
- U is the user running memcache, and if it is currently root, you need to specify the user with this parameter.
- L is the server IP address of the listener, which defaults to all network cards.
- P is the port that sets the TCP listener for memcache, preferably a port above 1024.
The- c option is the maximum number of concurrent connections to run, and the default is 1024.
-P is a PID file that is set to save Memcache.
- f <factor> chunk size growth factor (default:1.25).
-I Override the size of each slab page.  Adjusts max item size (new 1.4.2 version). You can also start multiple daemons, but the ports cannot be duplicated

Test startup is normal

telnet localhost 11211
2. View memcached Start command
PS aux|grep memcached
 
2.1.2. Stop memcached

Kill ' Cat/var/run/memcached/pid '

6. Install memcache PHP Extension

wget http://pecl.php.net/get/memcache-2.2.5.tgz

Tar zxvf memcache-2.2.5.tar.gz

CD memcache-2.2.5

/home/webserver/php/bin/phpize

./configure--enable-memcache--with-php-config=/home/webserver/php/bin/php-config

Make && make install

The following prompts will appear when the installation is complete

Installing Shared extensions:

/home/webserver/php/lib/php/extensions/no-debug-non-zts-20121212/

Modify the php.ini file

Change Extension_dir = "./" To Extension_dir = "/home/webserver/php/lib/php/extensions/no-debug-non-zts-20121212/"

Add the following line of code

Extension=memcache.so

7, Test memcache PHP is installed successfully

Run the following code

<?php

$mem = new Memcache;

$mem->connect (' 127.0.0.1 ', 11211);

$mem->set (' Test ', "Hello world!", 0, 12);

$val = $mem->get (' Test ');

Echo $val;

?>

CentOS memcached Installation