eb5b52f598
Changing DC or rack on a node which was already bootstrapped is, in case of vnodes, very unsafe (almost guaranteed to cause data loss or unavailability), and is outright not supported if the cluster has a tablet-backed keyspaces. Moreover, the possibility of doing that makes it impossible to uphold some of the invariants promised by the RF-rack-valid flag, which is eventually going to become unconditionally enabled. Get rid of the above problems by removing the possibility of changing the DC / rack of a node. A node will now fail to start if its snitch reports a different DC or rack than the one that was reported during the first boot. Fixes: scylladb/scylladb#23278 Fixes: scylladb/scylladb#22869 Marking for backport to 2025.1, as this is a necessary part of the RF-rack-valid saga Closes scylladb/scylladb#23800 * github.com:scylladb/scylladb: doc: changing topology when changing snitches is no longer supported test: cluster: introduce test_no_dc_rack_change storage_service: don't update DC/rack in update_topology_with_local_metadata main: make dc and rack immutable after bootstrap test: cluster: remove test_snitch_change
Scylla in-source tests.
For details on how to run the tests, see docs/dev/testing.md
Shared C++ utils, libraries are in lib/, for Python - pylib/
alternator - Python tests which connect to a single server and use the DynamoDB API unit, boost, raft - unit tests in C++ cqlpy - Python tests which connect to a single server and use CQL topology* - tests that set up clusters and add/remove nodes cql - approval tests that use CQL and pre-recorded output rest_api - tests for Scylla REST API Port 9000 scylla-gdb - tests for scylla-gdb.py helper script nodetool - tests for C++ implementation of nodetool
If you can use an existing folder, consider adding your test to it. New folders should be used for new large categories/subsystems, or when the test environment is significantly different from some existing suite, e.g. you plan to start scylladb with different configuration, and you intend to add many tests and would like them to reuse an existing Scylla cluster (clusters can be reused for tests within the same folder).
To add a new folder, create a new directory, and then
copy & edit its suite.ini.