Cann't access to redis-cluster inside internal docker-compose network

[Sanshain]

Cann't access to redis-cluster inside internal docker-compose network:

How o reproduce?

• run docker-compose up from this one

• start inside redis_tests bash terminal:

python app.py -h redis-cluster

output:

['app.py', '-h', 'redis_cluster']
{'-h': 'redis_cluster'}
Traceback (most recent call last):
  File "app.py", line 51, in <module>
    test(
  File "/app/utils.py", line 39, in wrapper
    r = fn(*args, **kwargs)
  File "app.py", line 41, in test
    redis.zadd('ddd', {i: i})
  File "/usr/local/lib/python3.8/site-packages/redis/client.py", line 2688, in zadd
    return self.execute_command('ZADD', name, *pieces, **options)
  File "/usr/local/lib/python3.8/site-packages/rediscluster/client.py", line 555, in execute_command
    return self._execute_command(*args, **kwargs)
  File "/usr/local/lib/python3.8/site-packages/rediscluster/client.py", line 721, in _execute_command
    raise ClusterError('TTL exhausted.')
rediscluster.exceptions.ClusterError: TTL exhausted.