First, get the SASL development and utility libraries. For example, on Ubuntu, you can get these libraries through:

sudo apt-get -f install libsasl2-2 sasl2-bin libsasl2-2 libsasl2-dev libsasl2-modules

Then build the InnoDB memcached plugin (shared libraries) with SASL capability, by adding ENABLE_MEMCACHED_SASL=1 to the cmake options. In addition, memcached provides a simple plaintext password support, which is easier to use for testing. To enable this, set the option ENABLE_MEMCACHED_SASL_PWDB=1.

Overall, you will add following three options to the cmake:

cmake ... -DWITH_INNODB_MEMCACHED=1
  -DENABLE_MEMCACHED_SASL=1 -DENABLE_MEMCACHED_SASL_PWDB=1

The third step is to install the InnoDB memcached plugin as before, as explained in Section 14.2.9.3, “Getting Started with InnoDB Memcached Plugin”.

As previously mentioned, memcached provides a simple plaintext password support through SASL, which will be used for this demo.

Then reboot the server, and add a daemon_memcached_option option -S to enable SASL:

mysqld ... --daemon_memcached_option="-S"

Now the setup is complete. To test it, you might need an SASL-enabled client, such as this SASL-enabled libmemcached.

memcp --servers=localhost:11211 --binary  --username=testname
  --password=testpasswd myfile.txt

memcat --servers=localhost:11211 --binary --username=testname
  --password=testpasswd myfile.txt

Without appropriate user name or password, the above operation is rejected with the error message memcache error AUTHENTICATION FAILURE. Otherwise, the operation succeed. You can also examine the plaintext password set in the memcached-sasl-db file to verify it.