Monday, August 31, 2009

installing memcached on CentOS

How to install memcached on CentOS

This is a step by step guide to installing memcached from source on CentOS. The version of CentOS that I am using is CentOS release 5.2 (Final); to find what version you are using:

cat /etc/redhat-release

First, install the dependency libevent:

cd /usr/local/src
curl -O
tar xzvf libevent-1.4.9-stable.tar.gz
cd libevent-1.4.9-stable
./configure --prefix=/usr/local
make install

Next, install memcached:

cd /usr/local/src
curl -O
tar xzvf memcached-1.2.6.tar.gz
cd memcached-1.2.6
LDFLAGS='-Wl,--rpath /usr/local/lib' ./configure --prefix=/usr/local
make install

Verify that memcached starts:

memcached -u root -d

If there were no errors, make sure it is running:

ps aux | grep memcached

And finally, to stop memcached:

pkill memcached

These instructions prevent the following errors:

memcached: error while loading shared libraries:
cannot open shared object file: No such file or directory
configure: error: libevent is required
If it's already installed, specify its path using --with-libevent=/dir/

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