If you’re not sure whether your dedicated server‘s Memcached service is listening on port 11211 i.e. it is installed and running properly, there are some easy tests you can do to make sure everything is operating fine.
Before you start, enable the administrator access on your server (in case you have not), connect via SSH then switch to the root user.
Next, in the command line, type the following command and PRESS ENTER:
telnet localhost 11211This will report to you back that it was able to connect to the service.
[root@server[~]: telnet localhost 11211 Trying 127.0.0.1... Connected to localhost. Escape character is '^]'.
In case, if it’s not installed properly, you will see something like this:
[root@transfer[~]: telnet localhost 11211 Trying 127.0.0.1... telnet: connect to address 127.0.0.1: Connection refused
And you will not be able to connect to the service.
In the next lesson, you will learn about testing the presence of the needed PHP libraries to make Memcached work for you.