This playbook will setup a Redis Master, and Redis Slaves to that Master.

First have launch the 3 or 4 Ubuntu 14.04 servers(Yes, this playbook only works with Ubuntu 14.04). Designate one as the redis-master(Redis Master), and rest of them as redis-slaves(Redis Slaves), appropriately list them in the ./hosts file.

[redis-master]
rmaster ansible_ssh_host=10.10.0.6

[redis-slaves]
10.10.0.7
10.10.0.8
10.10.0.9

NOTE: You might have to setup proxies on the ./base-redis/tasks/main.yml and ./common/tasks/main.yml, remove it if you do not need it.

...
  environment:
    http_proxy: http://myproxy.in:8080
    https_proxy: http://myproxy.in:8080

Once you have done the edits, you are ready to go.

$ ansible-playbook -i hosts site.yml

This should setup the redis cluster with single redis-master and 3 redis-slaves. If you want add sentinels to the picture. You just need to modify the hosts file, and something like this.

...
...
[redis-sentinels]
10.10.0.6
10.10.0.7
10.10.0.8
10.10.0.9

Now you should rerun the, ansible-playbook -i hosts site.yml.