In this post, I am sharing an important list of Cassandra System Tables.

Cassandra DBA can use these tables for a different investigation like, Schema information, Roles information, Tracing information and others.

There are different keyspaces are available like, system, system_auth, system_schema, system_traces.

system_auth Keyspace:

SELECT *FROM system_auth.roles;
SELECT *FROM system_auth.role_permissions;

SELECT *FROM system_schema.views;
SELECT *FROM system_schema.types;
SELECT *FROM system_schema.triggers;
SELECT *FROM system_schema.tables;
SELECT *FROM system_schema.keyspaces;
SELECT *FROM system_schema.indexes;
SELECT *FROM system_schema.functions;
SELECT *FROM system_schema.columns;
SELECT *FROM system_schema.dropped_columns;
SELECT *FROM system_schema.aggregates;

SELECT *FROM system_traces.sessions;
SELECT *FROM system_traces.events;

SELECT *FROM system.available_ranges;
SELECT *FROM system.peers;
SELECT *FROM system.peer_events;
SELECT *FROM system.batchlog;
SELECT *FROM system.batches;