Connecting to nodes

Before attempting to connect to your Memcached cluster, you must have the endpoints for the nodes. To find the endpoints, see the following:

• Finding a Cluster's Endpoints (Console)

• Finding Endpoints (AWS CLI)

• Finding Endpoints (ElastiCache API)

In the following example, you use the telnet utility to connect to a node that is running Memcached.

Note

For more information about Memcached and available Memcached commands, see the Memcached website.

To connect to a node using telnet

1. Connect to your Amazon EC2 instance by using the connection utility of your choice.

   Note

   For instructions on how to connect to an Amazon EC2 instance, see the Amazon EC2 Getting Started Guide.

2. Download and install the telnet utility on your Amazon EC2 instance. At the command prompt of your Amazon EC2 instance, type the following command and type y at the command prompt.

   sudo yum install telnet

   Output similar to the following appears.

   
   
   Loaded plugins: priorities, security, update-motd, upgrade-helper
   Setting up Install Process
   Resolving Dependencies
   --> Running transaction check
   
   ...(output omitted)...
   
   Total download size: 63 k
   Installed size: 109 k
   Is this ok [y/N]: y
   Downloading Packages:
   telnet-0.17-47.7.amzn1.x86_64.rpm                        |  63 kB     00:00  
   
   ...(output omitted)...
   
   Complete!
   

3. At the command prompt of your Amazon EC2 instance, type the following command, substituting the endpoint of your node for the one shown in this example.

   telnet mycachecluster.eaogs8.0001.usw2.cache.amazonaws.com 11211

   Output similar to the following appears.

   Trying 128.0.0.1...
   Connected to mycachecluster.eaogs8.0001.usw2.cache.amazonaws.com.
   Escape character is '^]'.
   >

4. Test the connection by running Memcached commands.

   You are now connected to a node, and you can run Memcached commands. The following is an example.

   set a 0 0 5      // Set key "a" with no expiration and 5 byte value
   hello            // Set value as "hello"
   STORED
   get a            // Get value for key "a"
   VALUE a 0 5
   hello
   END
   get b            // Get value for key "b" results in miss
   END
   >