After creating the Security group, you can launch the Cassandra cluster.
For production Cassandra clusters on EC2, use Large or Extra Large instances with
local storage. RAID0 the ephemeral disks, and put both the data directory and the
commit log on that volume. This has proved to be better in practice than putting the
commit log on the root volume (which is also a shared resource). For more data
redundancy, consider deploying your Cassandra cluster across multiple availability
zones or using EBS volumes to store your Cassandra backup files.
In the left panel, click EC2 Dashboard.
Click Launch Instance.
In Step 1: Choose an Amazon Machine Image (AMI):
Click Community AMIs.
Search for DataStax.
Select the DataStax Auto-Clustering AMI.
In Step 2: Choose an Instance Type, choose the appropriate
type, and then click Next: Configure Instance
- Extra large for production.
- Large for development and light production.
- Small and Medium not supported.
Configure the instances to suit your requirements:
Select the number of instances.
Select Launch into EC2-Classic. (VPC instances
are not supported.)
Open Advanced Details.
Add the following options (as text) to the User
||Required. The name of the cluster.
||Required. The total number of nodes in the
||Required. The version of the cluster. Use
community to install the latest version of DataStax
||Optional. By default, DataStax OpsCenter is
installed on the first instance. Specify no to
||Optional. Allows you to use your own reflector.
For example: --clustername myDSCcluster --totalnodes 6
Click Next: Add Storage, and add EBS volumes as
Amazon Web Service recently reduced the number of default ephemeral
disks attached to the image from four to two. Performance will be slower
for new nodes unless you manually attach the additional two disks; see
Amazon EC2 Instance
Click Next: Tag Instance and give a name to your DSE
instance, such as workload-dsc.
Click Next: Configure Security Group and configure as
Choose Select an existing security group.
Select the Security Group you created earlier.
Click Review and Launch.
In the Step 7: Review Instance Launch page, make any
Click Launch and then in the Select an
existing key pair or create a new key pair dialog, do one of the
- If you need to create a new key pair, click Choose an
existing key pair and select Create a new key
pair. Save the key (.pem file) to your
local machine; you will need it to log in to your DataStax Enterprise
- Select an existing key pair from the Select a key
pair drop list and check the acknowledgment
Click Launch Instances.
The Launch Status page is displayed.
Click View Instances.