Have problem using DESCRIBE and USE
DESCRIBE <keyspace_name>
WARN: DESCRIBE|DESC was moved to server side in Cassandra 4.0. As a consequence DESCRIBE|DESC will not work in cqlsh '6.1.0' connected to Cassandra '3.11.5', the version that you are connected to. DESCRIBE does not exist server side prior Cassandra 4.0.
USE keyspace <keyspace_name>
Improper USE command
For more context, when connect to the cluster using
cqlsh <cassandra_cluster>
/usr/local/Cellar/cassandra/4.1.2/libexec/bin/cqlsh.py:473: DeprecationWarning: Legacy execution parameters will be removed in 4.0. Consider using execution profiles.
/usr/local/Cellar/cassandra/4.1.2/libexec/bin/cqlsh.py:503: DeprecationWarning: Setting the consistency level at the session level will be removed in 4.0. Consider using execution profiles and setting the desired consitency level to the EXEC_PROFILE_DEFAULT profile.
Cassandra installed using brew install cassandra
Commands used to works but not anymore.
So to me, it looks like you're using cqlsh 6.1 from Cassandra 4.1.2 to connect to Cassandra 3.11.5. What it's telling you is correct. cqlsh saw some big changes between Cassandra 3.11 and 4.1.
To get around this, use the version of cqlsh that came with Cassandra 3.11.5.