The scheduler serves its own REST API from the same loop that runs executors,
and the config backup spends ~21 minutes inside tarfile and zlib. Called inline
that starves the loop for the whole window: the service was unreachable
03:05-03:25 every night, and again at 07:39 today when the job was triggered by
hand to prove the T-69 report path. asyncio.to_thread is the fix -- zlib
releases the GIL while compressing, so the loop is scheduled normally.
The outage was invisible for as long as it existed. The hourly health check
fires at :35 and the outage runs 03:05-03:25, so no sample ever landed inside
it. A fixed-phase hourly probe cannot see a 20-minute event; that is aliasing,
not bad luck, and it would have stayed hidden indefinitely.
health_report.report_async joins it: psycopg2 is a blocking driver, so
reporting from the loop held it for the connect and insert -- up to
connect_timeout seconds precisely when the database is unreachable, which is
when a report matters most. Both backup executors use it now.
Caveat worth knowing: the engine wraps executors in asyncio.wait_for and a
thread cannot be cancelled, so on timeout the task is recorded failed while the
tar runs to completion. Still strictly better than blocking everything, and the
configured 3600s is well clear of the observed 1263s.
Seven tests in this file had been red since the initial commit -- they came
over with the portainer-core extraction, patched the Path class wholesale,
asserted "backed up" against a function returning "Backup completed: ...", and
one wrapped its call in except Exception: pass with its only assertion
commented out. There is no CI test gate here, so nothing reported it. Replaced
with tests that build real archives in tmp_path and assert on their contents.
The new loop test is the one that matters and it is mutation-checked: with
to_thread reverted it counts 0 heartbeat ticks, with it ~40.
Their structural demands (_create_tar_filter, a sync _cleanup_old_backups) were
adopted because threading wanted that shape anyway. Their exclude semantics
were not. The tests assert fnmatch behaviour and the deployed config is written
against substring matching -- it excludes logs as ".log", and paths as
unanchored fragments like "ollama/models/*" against members named
"docker-data/ollama/...". Under fnmatch neither matches, and the nightly
archive would silently gain many GB of model blobs instead of shrinking. That
is now pinned by tests naming the consequence, so the "improvement" fails loudly.
Co-Authored-By: Claude <noreply@anthropic.com>
Portainer keeps every stack definition, endpoint, user and access-control
rule in a BoltDB inside the portainer_data Docker volume. That volume
sits under /var/lib/docker/volumes/, and the daily config backup covers
~/docker-data and code-server-config only — so the thing that defines all
24 stacks was the one thing not backed up.
Calls Portainer's /api/backup rather than tarring the volume. BoltDB is a
single memory-mapped file, so copying it while Portainer writes can
capture a torn page; the API serialises a consistent snapshot.
A 200 whose body is not a readable archive is treated as failure. An
archive that will not open is worse than a missing one, because it looks
like a backup until the day it is needed. Writing that check found a real
gap in it: a truncated tar.gz raises EOFError, which is neither TarError
nor OSError, so the first version of the guard let it through.
Archives contain TLS certificates and private keys and are written 0600.
Retention only ever deletes files matching the exact name this executor
writes, so an unrelated archive left in the same directory survives.
Co-Authored-By: Claude <noreply@anthropic.com>
Non-interactive equivalent of system-admin-toj's prune-docker.sh, which
prompts per stage and so cannot run from cron.
Only the stages that discard regenerable data run by default: build
cache and dangling images. Unused images and volumes are opt-in, because
docker volume prune removes volumes belonging to merely-stopped
containers rather than only orphaned ones, which on this host is a
plausible way to lose a database.
A failing stage is reported and the remaining stages still run, since a
partial reclaim beats none, but the task still ends up failed so the
error is not swallowed.
Co-Authored-By: Claude <noreply@anthropic.com>
Deletes rows past a retention window from a table on the shared Postgres
server. Written for sysmon's check_history, which grows with every
monitoring check and had no retention at all despite the docs promising
a 30-day rolling window.
Connects with the Scheduler's own credentials and overrides only the
database name, so no second set of secrets enters the stack. The target
database grants scheduler_user just SELECT and DELETE on the table, so a
bug here can drop old rows but cannot corrupt or forge history.
Table and column names cannot be bound as query parameters, so both are
validated against a strict identifier pattern before interpolation, and
a retention window below 1 day is refused rather than silently emptying
the table.
Co-Authored-By: Claude <noreply@anthropic.com>
jpmschweitzerandClaude