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kevinveenbirkenbachandClaude Opus 5
8230c187a2
03_wait_converge built the DB service name from the engine type:
"${DB_DEP}_${DB_DEP}" -> mariadb_mariadb. That name is only correct when
the database is central. force_shared_db deliberately leaves a
manager-pinned role carrying a literal `shared: false` alone, so
web-app-magento keeps its embedded engine, and sys-svc-rdbms deploys it as
magento_database inside magento's own stack.
The name came from the engine, which is global, and was looked up with
`docker service ls` across the whole swarm instead of the role's stack, so
the `shared` flag never entered the check at any step. Both polarities were
wrong:
variant #1 - no consumer pulls the central provider in, so
mariadb_mariadb does not exist. Run 32630684501 job 97175522113 polled it
ninety times and failed the drill, while the rescue artifact shows
magento_database at 1/1 Running and the play at failed=0.
variant #0 - matomo and mailu declare a Jinja `shared`, get force-shared
and drag svc-db-mariadb in. Job 95662862942 then reported
`db(mariadb): 1/1 Running 2 hours ago` beside `magento: Running 21
minutes ago` - green on a database magento never touches.
resolve_db_service asks the deployed swarm which service carries this
role's database: <entity>_database first, else <dep>_<dep>. The two cannot
collide, because sys-svc-rdbms renders the _database sidecar only under
`lookup('database', application_id, 'local')`. Exact-line matching, not
docker's substring name filter, per 246558a13.
Only web-app-magento changes behaviour: it is the one role that is both
pinned by force_shared_db and seen by the DB_DEP grep. matrix and
bigbluebutton never reach the DB half - their entity key carries no image,
so skip_if_no_swarm_service exits first - and discourse resolves
postgres_postgres exactly as before, in every variant.
A role that declares a DB dep no service serves now says so and gates the
app half alone, instead of polling a name nobody deployed.
diagnostics.sh carried the same guess in its container filter.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>