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YEDIS authentication is based on passwords. Each client connecting using the YEDIS API should provide a valid password in order to execute any command successfully.
NOTE: YEDIS implements a password-only authentication scheme. From the Redis security docs page (“Authentication feature” section), Open-source Redis does not try to implement Access Control, it provides a tiny layer of authentication that is optionally turned on editing the redis.conf file.
1. Enable YEDIS authentication
You can enable access control to enforce password based authentication in YEDIS API using the CONFIG command.
To do so, connect to the cluster using
redis-cli and run the following command:
127.0.0.1:6379> CONFIG SET requirepass "password"
2. Connect with redis-cli
redis-cli, connect to the cluster again using
redis-cli and run the
PING command (or any other command).
(error) NOAUTH PING: Authentication required.
You would need to authenticate the client (
redis-cli in this case) by running the AUTH command:
127.0.0.1:6379> AUTH password
Subsequently, running any command would succeed:
3. Changing authentication credentials
YEDIS allows for multiple passwords (up to 2) to be accepted. This enables performing a graceful change of password without experiencing any application outage. Note that this requires knowing the old password.
Let us assume that the old password is
old-password and the new password we intend to change it to is
new-password. The preferred sequence is:
- Add a new password
127.0.0.1:6379> CONFIG SET requirepass "old-password,new-password"
This enables connecting to the database using both passwords.
- Change password used by the application tier
This would involve changing the config or pushing an updated binary to the application tier so that it now connects using
- Drop old password
127.0.0.1:6379> CONFIG SET requirepass "new-password"