How to create redis cluster without replica?

@ryan.murray 

To create a Redis cluster without replica, you need to follow these steps:

1. Install and configure Redis on multiple servers: You will need to install Redis on multiple servers that will form your Redis cluster. Make sure to configure each server properly with a unique port number.
2. Set up cluster mode in Redis configuration: Edit the Redis configuration file on each server and set the cluster-enabled yes parameter to enable cluster mode.
3. Start Redis servers in cluster mode: Start the Redis servers on each node with the --cluster-enabled yes parameter to run them in cluster mode.
4. Use the Redis redis-cli tool to create the cluster: Use the redis-cli tool to connect to one of the Redis servers and run the cluster meet command to connect all the nodes together in a cluster.
5. Create slots in Redis cluster: Use the cluster addslots command to distribute the hash slot range evenly across all the Redis nodes.
6. Check the status of the Redis cluster: Use the cluster nodes command to check the status of the Redis cluster and ensure that all nodes are connected and working properly.

By following these steps, you can create a Redis cluster without replica for high availability and data sharding purposes.