Automating creation of a redis cluster

Redis notes

Fireup all our nodes.

I could find information about this only which was odd. The tutorial is nice if you are setting up some static site ala the early 00's.
So this is some notes on creating a cluster by hang which will feed into the creation of a puppet / ansible / chef / shell / slat script 
to do the main part of creating the cluster. 

I note also many clients do not support redis in cluster mode WTF?

Open up this in a browser
https://redis.io/commands/cluster-slots
http://download.redis.io/redis-stable/src/redis-trib.rb  -- The only documentation that seem to exist on how to do this

for node in list of nodes  
     connect to first cluster
    redis-cli cluster meet <IP> <PORT>
    
redis-cli cluster nodes | gep connected # should show all nodes from above 
 
# Connect to defined slaves an run  fom the master id som e cluster nodes
for node in list of slaves 
 connect to node
 CLUSTER REPLICATE <master id>
 
 
 number per node = 16384/no,_masters
 start = 0
 limit = start + number per node
 end = 16384
 for node in list of master 
    connect to node
     CLUSTER ADDSLOTS start start+1 ... limit 
     start = limit+1
     limit = limit + number per node
     if limit > end { limit = end }
     
 
 # Technically its not clear is this is required
 x=1
 for each node 
  connect to node
   CLUSTER SET-CONFIG-EPOCH x++