docker's name filter matches substrings, so every stack whose sidecar is
named after its app answered with two containers and two services. The
drill took the first, which after a reschedule was the MCP sidecar: it
declares no healthcheck and does not listen on the app port, so the step
waited sixty seconds on the wrong process. Selection now goes through the
swarm service label and an exact name match, both behind one helper.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The drill probed for a fixed 60s. A container without a shell can only be
observed through its docker health status, and mattermost declares
start_period 30s with interval 1m, so that status cannot report healthy
before 90s. The step was unreachable for such an app however fast it
started. The budget now comes from the container's own healthcheck and
stays at 60s for every container that declares none.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
The failover-drill assert polled service convergence for 60 iterations (120s).
OpenProject web boots in ~140s, so after 06_drain_worker rescheduled it the
replicas turned healthy ~20s after the poll gave up, and 07_assert_state.sh
reported 'Replicas not fully converged: 1/3' and exited 1 even though the stack
did converge moments later. The loop breaks early once converged, so raising the
ceiling to 120 iterations (240s) costs fast apps nothing and only widens the
window for heavy apps.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Replace the per-node docker-run bring-up with a single node image
(compose/swarm/Dockerfile bakes python3/dnsmasq/openssh/rsync/cryptsetup)
declared in compose/swarm.yml, one compose up, and one ansible play
(compose/swarm/playbook.yml over ansible_connection: docker) that waits for
systemd, captures IPs, wires lab DNS and installs the .deb per node. Reshape
the harness into topology/ (naming SPOT), routine/ (01_bootstrap + the
sequenced 02-08 steps) and utils/ (clean/, collect/, shared helpers); the
workflow, matrix.py and Makefile follow the new paths. swarm init/join was
already ansible-owned (svc-swarm-node), corrected in the README diagram.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
kevinveenbirkenbachandClaude Opus 5