Deploy the next lane with Tentacle

[ideaship]

testbed-deploy-next-in-a-nutshell-ubuntu-24.04 is the lane for the next OpenStack release, 2026.1, and it pinned Ceph to reef. reef is not the Ceph this lane should be validating against 2026.1.

This points it at Tentacle, which osism/release offers as a flavour for latest. The tempest sibling inherits from this job and follows.

The Ceph backend is not set here. python-osism selects it from the OSISM release: the latest track, which this lane runs, deploys with cephadm, and ceph-ansible has no Tentacle path in any case. Naming a backend in the job would only restate that, and the nutshell collection would ignore it.

That selection is not confined to this lane — every nutshell lane on the latest track deploys with cephadm, including testbed-deploy-in-a-nutshell-ubuntu-24.04 and testbed-deploy-current-in-a-nutshell-ubuntu-24.04, which pin the OpenStack release rather than the OSISM one. The stable lanes pin manager_version to a released version and stay on ceph-ansible.

The testbed configuration adapts to a release past squid. set-ceph-version.sh, where the Ceph release enters a latest testbed's configuration, now does two things for any release other than quincy, reef and squid:

• It disables the ceph-ansible container. On the latest track its tag follows ceph_version, and there is no ceph-ansible:tentacle. A nutshell lane leaves CEPH_STACK unset, so the cephadm switch on CEPH_STACK (Select the Ceph backend with CEPH_STACK #2960) does not reach it.
• It removes rgw keystone api version from the Ceph environments. Tentacle removed the option, and writing it fails the cephadm configuration play. Reef and squid still default it to 2, so it stays for them.

These match the decisions cfg-cookiecutter makes for generated configurations, on the same release list.

Depends on

This lane deploys Tentacle on cephadm only with all of these in:

• Select Ceph workflows by OSISM release python-osism#2741 — release-keyed selection of the Ceph workflow
• Route ceph plays to osism-ansible python-osism#2736 — routing of the cephadm plays to osism-ansible
• Deploy Ceph with cephadm: the plays ansible-playbooks#576 — the plays, including the OSD LVM plays
• Add a Tentacle ceph flavour to latest release#2745 — the Tentacle flavour
• ceph: Default ceph_image_version to the Ceph release defaults#317 — ceph_image_version without a ceph-ansible container
• Install the Ceph client from download.ceph.com container-images-kolla#808 — a Ceph client in the OpenStack images that reads Tentacle's aes256k keys

Part of

• Move the "next" CI lane to cephadm and Tentacle (ordered, cross-repo) issues#1455

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