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Error memcached support requires libmemcached – How to fix

by | May 31, 2021

Stuck with “Error memcached support requires libmemcached”? we can help you.

Often while trying to install memcached we may end up with this error. This error is common for both Plesk and cPanel.

Here at Bobcares, we often handle requests from our customers to fix similar errors as a part of our Server Management Services. Today we will see how our support engineers fix this for our customers.

Causes and Fixes for “Error memcached support requires libmemcached”

We will see what causes this error in Plesk as well as cPanel servers along with their fixes.


The error typically looks like the following one in Plesk servers:

Error memcached support requires libmemcached


The libmemcached-devel package missing.

Steps to fix this error

Following are the steps to fix this error in the Plesk server.

1. First log in to the server via SSH.

2. Then use the following command to install the package depending upon the operating system(OS):


# yum install libmemcached-devel


# apt-get install libmemcached-dev


The error typically looks like the following one in cPanel servers:

If Installing memcached from WHM » Software » Module Installers was not successful it triggers the error. A typical error may look like the one given below.

Error memcached support requires libmemcached

The exact steps for the installation given below:

1.Run the following commands:

wget --no-check-certificate

tar -xvf libevent-2.0.17-stable.tar.gz 

cd libevent-2.0.17-stable


make && make install

cd ~


tar -xzf memcached-1.4.13.tar.gz

cd memcached-1.4.13


make && make install

2. After installing these components we have to create the following file:

For 32-bit machine

echo "/usr/local/lib/" > /etc/

For 64-bit machine

echo "/usr/local/lib/" > /etc/

3. Then Run the following commands:

memcached -d -u nobody -m 1024 -p 11211

4. Next, we can install libsasl2 using the following command:

yum install cyrus-sasl-devel

5. Then we will install libmemcached using the following command:

cd ~


tar -zxvf libmemcached-1.0.4.tar.gz

cd libmemcached-1.0.4


make && make install

pecl install memcached

6. Now we can run the following to check if is installed into /usr/local/lib/php.ini file. We can add it if is it not.

grep -q "" /usr/local/lib/php.ini || echo '' >> /usr/local/lib/php.ini

7. We can check the extension directory that we are using, with the following command:

for i in `grep ^extension_dir /usr/local/lib/php.ini | awk {'print $3'} | cut -d\" -f2` ;do ls -lah $i/memcache* ;done

8. Also, to preserve the module on EasyApache recompiles we have to do the following:

for i in `grep ^extension_dir /usr/local/lib/php.ini | awk {'print $3'} | cut -d\" -f2` ;do cp $i/ /root ;done
for i in `grep ^extension_dir /usr/local/lib/php.ini | awk {'print $3'} | cut -d\" -f2` ;do echo -e '#!/bin/bash\ncp /root/' "$i\ngrep -q '' /usr/local/lib/php.ini || echo '' >> /usr/local/lib/php.ini\n/etc/init.d/httpd restart" > /usr/local/cpanel/scripts/posteasyapache ;done
chmod +x /usr/local/cpanel/scripts/posteasyapache

This will create a posteasyapache script that will ensure is copied from /root/ back into the php extension directory.

9. Finally using the following commands we can ensure that the installation was done properly and is complete.

[email protected] [~]# php -i | grep -i memcached
memcached support => enabled
libmemcached version => 1.0.4
Registered save handlers => files user sqlite memcached


[Still, stuck with the error? We can help you]


In short, we saw how our Support Techs fix “error memcached support requires libmemcached” for our customers.


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