The error 'redis clients jedis exceptions jedisdataexception noauth authentication required' occurs when a Redis server needs an authentication password for a specific operation, but the client trying to access it either hasn't provided the password or has provided an incorrect one. Redis authentication is enabled by setting a value for the requirepass configuration option in the redis.conf file, and clients must authenticate by sending an AUTH command with the correct password before executing any commands.
The error message indicates that the Jedis library, which is a Java Redis client, caused the exception. The Jedis client may not have been configured to send an authentication command before executing other operations, or the authentication password provided by the client may be incorrect. Another possibility is that the Redis server was configured to require authentication after the Jedis client was initially configured, and the Jedis client hasn't been updated to include authentication credentials.
To resolve the 'redis clients jedis exceptions jedisdataexception noauth authentication required' error, provide the correct authentication password to the Redis server. If you can access the Redis server's configuration file, check if the requirepass option is set and update the Jedis client configuration using the auth() method to include the correct password.
Alternatively, use the redis-cli command-line tool to connect to the Redis server and issue the AUTH command with the correct password to authenticate. Once authenticated, execute other Redis commands as usual with the Jedis client.
If you cannot access the Redis server's configuration file or update the Jedis client code, contact the administrator of the Redis server to obtain the correct authentication password or request temporary authentication disablement for your IP address. However, disabling authentication is not recommended for security reasons, so it's better to use the correct authentication credentials to access Redis.