[sr-dev] [kamailio/kamailio] ndb_redis doesn't use AUTH on a slave server in redis cluster. (Issue #3654)

### Description & troubleshooting I have defined a redis cluster as followed. The cluster consists of 3 masters (port 6379) and 3 slaves (port 6380). The password is identical on all nodes through redis option 'requirepass'. ``` modparam("ndb_redis", "server", "name=sbcredis;addr=SBCMASTERREDISIP;port=6379;db=0;pass=REDACTED") modparam("ndb_redis", "server", "name=sbcredis;addr=PRIVATEIP;port=6380;db=0;pass=REDACTED") modparam("ndb_redis", "server", "name=sbcredis;addr=ASTP5IP;port=6380;db=0;pass=REDACTED") modparam("ndb_redis", "server", "name=sbcredis;addr=ASTP6IP;port=6379;db=0;pass=REDACTED") modparam("ndb_redis", "server", "name=sbcredis;addr=ASTP3IP;port=6380;db=0;pass=REDACTED") modparam("ndb_redis", "server", "name=sbcredis;addr=ASTP4IP;port=6379;db=0;pass=REDACTED") modparam("ndb_redis", "cluster", 1) modparam("ndb_redis", "allow_dynamic_nodes", 1) modparam("ndb_redis", "debug", 3) ``` When executing the redis_cmd command, most of the times an expected warning is shown due to another server providing the requested slot: `"(error) MOVED ... 192.168.136.241:6380"` Notice that I've enabled "allow_dynamic_nodes" to make sure there is an automated connection attempt to the indicated server. However, it appears that sometimes a "NOAUTH Authentication required." error is thrown when there is a redirection to a slave server serving that slot. I can authenticate succesfull on the redis-cli when using the identical password though. Also note that when a redis master is queried, the redis_cmd is successful. #### Reproduction Each simple redis command that needs authentication (GET, SET, ...) `redis_cmd("sbcredis", "SET TESTKEY TESTVALUE", "r");` #### Log Messages ``` ndb_redis [redis_client.c:1089]: redisc_exec(): Redis error:NOAUTH Authentication required. ``` ### Possible Solutions None for now except disabling the password on all nodes. ### Additional Information ``` kamailio 5.7.2 ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/3654 You are receiving this because you are subscribed to this thread. Message ID: <kamailio/kamailio/issues/3654(a)github.com>