ERROR sending "cluster slots" command to redis server when I set a key

[jramirezneira]

Checklist

• Python version 3.7.3
• Using Python parser
• Using just asyncio event loop

the cluster configuration is as follow:

Number of Nodes: 4
Mode: cluster
Password: no
Encryption in-transit: yes
Encryption at-rest: yes
Engine Version: 6.0.5

Steps to reproduce

I am trying to test the cluster client example to an redis cluster on aws, when I set a Key ( await client.set('foo', 1)), redis return an error. my code is the following:

startup_nodes = [{ "host": "xxxxxx.xxxxxx.xxxxx.cache.amazonaws.com", "port" : int(6379) }]

async def example():
    client = StrictRedisCluster(startup_nodes=startup_nodes, connect_timeout=10, stream_timeout=10, ssl=True)

    await client.set('foo', 1)
    

loop = asyncio.get_event_loop()
loop.run_until_complete(example()) 

it works by using redis-py-cluster library with the same configuration.

Expected behavior

set the key in redis

Actual behavior

The connection works, but when it tries to set a key return this exception:

Exception has occurred: RedisClusterException
ERROR sending "cluster slots" command to redis server: {'host': 'xxx.xx.xxx.xxx.cache.amazonaws.com', 'port': 6379}

set operation is timed up after n seconds, just the stream timeout, however connection to server is OK