How can I find out which version of Cassandra a specific DSE is running?

Question

So far, I haven't found a place on Datastax documentation website that sums this up. Can I easily check the version some other way on a server?

Answer 1

Open cqlsh and type show VERSION.

This gives all the versions of cqlsh, DSE, Cassandra etc.

admin@cqlsh> SELECT cql_version FROM system.local;   cql_version -------------        3.4.0 

Also, nodetool version shows the Cassandra version

Answer 2

I'm not sure if there is an explicit page that shows cassandra version by DSE release, but the 'Release Notes' page of each DSE release shows the versions that are installed. For example, here are the Release Notes for 4.5 which show all versions including cassandra that are upgraded at each minor version.

One way to check against running Cassandra instances by running the following queries in cqlsh:

select peer, release_version from system.peers; select release_version from system.local; 

This first query will return all hosts and their release version except for the local node being queried. The second query will return it for the local node being queried.

Example output:

cqlsh> select peer, release_version from system.peers;   peer      | release_version -----------+-----------------  127.0.0.3 |  2.1.2-SNAPSHOT  127.0.0.1 |  2.1.2-SNAPSHOT  (2 rows)  cqlsh> select release_version from system.local;   release_version -----------------  2.1.2-SNAPSHOT  (1 rows)