Last week in scylla-cluster-tests.git master (issue #139; 2026-06-05)

This short report brings to light some interesting commits to scylla-cluster-tests.git master from the last week. Commits in the 78f35c72…1f7c7b0d range are covered.

There were 37 non-merge commits from 12 authors in that period. Some notable commits:

The GCE backend gained DNS-name support, enabling use_dns_names for GCE nodes.

GCE provisioning also became more resilient to exhausted zones: when a zone returns ZONE_RESOURCE_POOL_EXHAUSTED, the cluster now falls back to alternative zones in the same region. All artifact test cases were switched to the backend-agnostic fallback_to_next_availability_zone.

On AWS, long-running tests that add a node of a new type mid-test gained a pre-flight capacity guard: capacity reservation now also covers instance_type_db_target and instance_type_db_oracle, and a new pre_flight_capacity_probe parameter briefly probes capacity for dynamically-added node types before stress starts — triggering the existing AZ fallback instead of failing hours into a run.

Setting stress_duration is supported by Gemini.

CentOS 7 being EOL, its artifact tests and pipeline references were removed and the artifactsPipeline default moved to centos9.

Ubuntu 26.04 (Plucky) rolling upgrade job was added while the Ubuntu 22.04 one was deprecated and dropped from the weekly trigger.

See you in the next issue of last week in scylla-cluster-tests.git master!