This is an old revision of the document!

Installing Memcached

You can install Memcached, or LiteSpeed's version of Memcached, LSMCD.

LSMCD is a high-performance, distributed caching system with file-backed shared memory. It's generic in nature, but was originally intended for use in speeding up dynamic web applications by alleviating database load. It is designed as a drop-in replacement for Memcached, however we also have a few features that Memcached does not: High Availability and persistence of data. High Availability means that if one or more of your servers goes down, your data can still be accessed and updated as though it was still up. Persistence of data means that there is no need for a database backend. Whatever you put in LSMCD stays in LSMCD unless you say otherwise.

To install LiteSpeed Memcached, please see Compiling/Installing LSMCD.

for Centos7

yum install memcached -y

systemctl start memcached

systemctl enable memcached


telnet 11211


For Plesk Centos7:


yum install -y make plesk-php70-devel plesk-php71-develgcc plesk-php72-devel glibc-devel libmemcached-devel zlib-devel

/opt/plesk/php/7.0/bin/pecl install memcached

/opt/plesk/php/7.1/bin/pecl install memcached

/opt/plesk/php/7.2/bin/pecl install memcached

echo "" > /opt/plesk/php/7.0/etc/php.d/memcached.ini

echo "" > /opt/plesk/php/7.1/etc/php.d/memcached.ini

echo "" > /opt/plesk/php/7.2/etc/php.d/memcached.ini

plesk bin php_handler --reread


yum install -y make plesk-php56-devel gcc glibc-devel libmemcached-devel zlib-devel

/opt/plesk/php/5.6/bin/pecl install memcached-2.2.0

echo "" > /opt/plesk/php/5.6/etc/php.d/memcached.ini

plesk bin php_handler --reread

For Native LSWS Environment

yum install lsphp56-pecl-memcached lsphp70-pecl-memcached lsphp71-pecl-memcached lsphp72-pecl-memcached

For cPanel:


yum install -y libmemcached-devel

/opt/cpanel/ea-php70/root/usr/bin/pecl install memcached
/opt/cpanel/ea-php71/root/usr/bin/pecl install memcached
/opt/cpanel/ea-php72/root/usr/bin/pecl install memcached


yum install -y libmemcached-devel

/opt/cpanel/ea-php56/root/usr/bin/pecl install memcached-2.2.0


If installation returns error messages:

checking for libmemcached location... configure: error: memcached support requires libmemcached. Use --with-libmemcached-dir=<DIR> to specify the prefix where libmemcached headers and library are located
ERROR: `/root/tmp/pear/memcached/configure --with-php-config=/opt/cpanel/ea-php71/root/usr/bin/php-config --with-libmemcached-dir=no' failed

Please install libmemcached and the memcached extension by compiling from source code (replace php71 with your php version):

tar zxvf libmemcached-1.0.18.tar.gz
cd libmemcached-1.0.18
./configure --prefix=/usr/local/libmemcached
# if above failed with error related to SASL , please run "yum install cyrus-sasl*" and run: (without #)
# ./configure --prefix=/usr/local/libmemcached  --enable-sasl
make install

tar zxvf memcached-3.0.4.tgz
cd memcached-3.0.4
./configure --with-php-config=/opt/cpanel/ea-php71/root/usr/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached --disable-memcached-sasl
# if above failed with error related to SASL , please run "yum install cyrus-sasl*" and run: (without #)
# ./configure --with-php-config=/opt/cpanel/ea-php71/root/usr/bin/php-config --with-libmemcached-dir=/usr/local/libmemcached --enable-memcached-sasl
make install
echo "" > /opt/cpanel/ea-php71/root/etc/php.ini

If you have further issues installing the extension on cPanel, please contact cPanel support.

Create a php file in vhost directory, and access it.




Memcached should be shown:

  • Admin
  • Last modified: 2018/02/01 14:14
  • by Lisa Clarke