AUTH issue with version 3.4.0

Version

redis-py 3.4.0 redis_version: 5.0.4 (redis-cloud on heroku)

Platform:

python 3.8 on heroku

Description:

After upgrading from 3.3.11 to 3.4.0 the authentication won’t work anymore:

  File "/app/mergifyio/cache.py", line 127, in get
    value = self.redis.get(key)
  File "/app/.heroku/python/lib/python3.8/site-packages/redis/client.py", line 1585, in get
    return self.execute_command('GET', name)
  File "/app/.heroku/python/lib/python3.8/site-packages/sentry_sdk/integrations/redis.py", line 68, in sentry_patched_execute_command
    return old_execute_command(self, name, *args, **kwargs)
  File "/app/.heroku/python/lib/python3.8/site-packages/redis/client.py", line 881, in execute_command
    conn = self.connection or pool.get_connection(command_name, **options)
  File "/app/.heroku/python/lib/python3.8/site-packages/redis/connection.py", line 1178, in get_connection
    connection.connect()
  File "/app/.heroku/python/lib/python3.8/site-packages/redis/connection.py", line 559, in connect
    self.on_connect()
  File "/app/.heroku/python/lib/python3.8/site-packages/redis/connection.py", line 633, in on_connect
    if nativestr(self.read_response()) != 'OK':
  File "/app/.heroku/python/lib/python3.8/site-packages/redis/connection.py", line 739, in read_response
    raise response
redis.exceptions.ResponseError: wrong number of arguments for 'AUTH' command

Downgrading have workaround our issue.

The url passed to redis client looks like:

redis://rediscloud:<password>@redis-yyyyy.xxx.us-east-z-z.ec2.cloud.redislabs.com:12345

[RadoRado]

Can confirm. Did a Heroku deploy, which installed the latest version of redis and got the following error:

Redis ResponseError: wrong number of arguments for 'auth' command

[shawnrobb]

I was having the same issue with 3.4.1 deployed on Heroku. I’m using the RedisCloud add-on which automatically adds the REDISCLOUD_URL config variable. The connection string includes ‘rediscloud’ as the username. I removed the username and it started working again. Thanks for the info.