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Amazon ElastiCache
ElastiCache for Memcached User Guide (API Version 2015-02-02)

Step 1: Launch a Memcached Cluster

The cluster you're about to launch will be live, and not running in a sandbox. You incur the standard ElastiCache usage fees for the instance until you delete it. The total charges are minimal (typically less than a dollar) if you complete the exercise described here in one sitting and delete your cluster when you are finished. For more information about ElastiCache usage rates, see https://aws.amazon.com/elasticache/.

Important

Your cluster is launched in an Amazon VPC. Before you start creating your cluster, you need to create a subnet group. For more information, see Creating a Subnet Group.

To create an ElastiCache for Memcached cluster

  1. Sign in to the AWS Management Console and open the ElastiCache console at https://console.aws.amazon.com/elasticache/.

  2. Choose Get Started Now.

    If you already have an available cluster, choose Launch Cluster.

  3. From the list in the upper-right corner, choose the AWS Region you want to launch this cluster in.

  4. For Cluster engine, choose Memcached.

  5. Complete the Memcached settings section as follows:

    1. In Name, type a name for your cluster.

      Cluster naming constraints

      • Must contain from 1 to 20 alphanumeric characters or hyphens.

      • Must begin with a letter.

      • Cannot contain two consecutive hyphens.

      • Cannot end with a hyphen.

    2. From the Engine version compatibility list, choose the Memcached engine version you want to run on this cluster. Unless you have a specific reason to run an older version, we recommend that you choose the latest version.

    3. In Port, accept the default port, 11211. If you have a reason to use a different port, type in the port number.

    4. From Parameter group, choose the parameter group you want to use with this cluster, or choose "Create new" to create a new parameter group to use with this cluster. For this exercise, accept the default parameter group.

      For more information, see Creating a Parameter Group.

    5. For Node type, choose the node type that you want to use for this cluster. For this exercise, you can accept the default node type or select another node type.

      For more information, see Choosing Your Memcached Node Size.

      To select another node type:

      1. Choose the down-arrow to the right of the default node type.

      2. Choose the Instance family you want for the nodes in this cluster. Since this is just an exercise, to save costs, choose t2.

      3. From the available node types, choose the box to the left of the node type you want for this cluster. Since this is just an exercise, to save costs, choose cache.t2.small.

      4. Choose Save.

    6. From the Number of nodes list, choose the number of nodes (partitions) you want provisioned for this cluster.

  6. Choose Advanced Memcached settings and complete the section as follows:

    1. From the Subnet group list, choose the subnet you want to apply to this cluster. For this exercise, accept the default subnet group.

      For more information, see Subnets and Subnet Groups.

    2. For Availability zone(s), you have two options.

      • No preference – ElastiCache chooses each node's Availability Zone for you.

      • Specify availability zones – You specify the Availability Zone for each node.

      For this exercise, choose Specify availability zones and then choose an Availability Zone for each node.

      For more information, see Choosing Regions and Availability Zones.

    3. From the Security groups list, choose the security groups that you want to use for this cluster. For this exercise, accept the default security group.

      For more information, see Amazon VPCs and ElastiCache Security.

    4. The Maintenance window is the time, generally an hour, each week where ElastiCache schedules system maintenance on your cluster. You have two options.

      • No preference—ElastiCache chooses the day of the week and time of day for the cluster's maintenance window.

      • Specify maintenance window—You choose the day of the week, start time, and duration for the cluster's maintenance window.

      After the cluster is created, you can modify it to specify a difference maintenance window. For more information, see Managing Maintenance.

    5. For Notifications, leave it as Disable notifications.

  7. Choose Create to launch your cluster, or Cancel to cancel the operation.