To Create a redis cluster with redis5:
- Download source code.
- Compile it. `make`
- cd <working/dir>
- mkdir 7003 7004 7005
- cp <redis/root/src/redis-server 7003/
- cp <redis/root/src/redis-server 7004/
- cp <redis/root/src/redis-server 7005/
- cp <redis/root/src/redis-conf 7003/
- cp <redis/root/src/redis-conf 7004/
- cp <redis/root/src/redis-conf 7005/

cd 7003

Change content of redis.conf file; change port to match the directory name. For instance
```
port 30078
cluster-enabled yes
cluster-config-file nodes.conf
cluster-node-timeout 5000
appendonly yes
```

Then start each instance.

`./redis-server ./redis-conf`

Then finally join each instance to make a cluster.

`<redit-root>/src/redis-cli --cluster create 127.0.0.1:7003 127.0.0.1:7004 127.0.0.1:7005 --cluster-replicas 0`

In cases where at times the cluster needs to be created again using these nodes and you see error like
```[ERR] Node 127.0.0.1:30078 is not empty. Either the node already knows other nodes (check with CLUSTER NODES) or contains some key in database 0.```

Then get inside each node and `flushall` and `cluster reset`. Do this. And try to create cluster again. See [this](https://stackoverflow.com/a/38872895/1229355) link.

# One more way to do it

Download the source code

`curl -O http://download.redis.io/redis-stable.tar.gz`

`make`

`make install` ### Optional 

`cd utils/create-cluster`

Modify create-cluster scrip to provide proper hostname.

`./create-cluster start`

```
/opt/redis-6.0.6/src/redis-cli --cluster call localhost:30001 CONFIG SET protected-mode no
/opt/redis-6.0.6/src/redis-cli --cluster call localhost:30002 CONFIG SET protected-mode no
/opt/redis-6.0.6/src/redis-cli --cluster call localhost:30003 CONFIG SET protected-mode no
/opt/redis-6.0.6/src/redis-cli --cluster call localhost:30004 CONFIG SET protected-mode no
/opt/redis-6.0.6/src/redis-cli --cluster call localhost:30005 CONFIG SET protected-mode no
/opt/redis-6.0.6/src/redis-cli --cluster call localhost:30006 CONFIG SET protected-mode no
```

And if you want to avoid above 6 commands, then you can acutally set `PROTECTED_MODE=no` in `create-cluster` script. :D 

`./create-cluster create`

That is all. 

Redis doesn't support hostname. So be aware: https://github.com/redis/redis/issues/2410