Last week in scylla-cluster-tests.git master (issue #147; 2026-07-29)

This short report brings to light some interesting commits to scylla-cluster-tests.git master from the last week. Commits in the dfae4f00…b20dbc7d range are covered.

There were 35 non-merge commits from 9 authors in that period. Some notable commits:

The KeyStore now reads credentials from AWS Secrets Manager by default, with the legacy S3 bucket left as an opt-in through keystore_backend: 's3'.

Weekly cloud spend went down after tier1 and rolling-upgrade jobs were split into cost-balanced week-a / week-b halves that alternate biweekly. The weekly label stays on every job, so the scylla-pkg release path still selects the full set.

Topology coordinator lookup was rewritten on top of the Raft leader_host API instead of parsing group0_history.

A plan landed for running AMI artifact tests against minicloud as a local EC2 emulator, where instance-lifecycle calls go to minicloud while AMI resolution stays on real AWS.

PR builds are also cheaper to iterate on now that the pipeline aborts the previous build on a force-push.

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