The default systemd user service configuration (10-oomd-user-service-defaults.conf)
sets ManagedOOMMemoryPressure=kill with ManagedOOMMemoryPressureLimit=50%.
Under parallel DinD load (6 molecule tests), memory pressure exceeds 50%
for 30 seconds, causing systemd-oomd to SIGKILL molecule containers
(rc=137). This was the root cause of recurring "container is not running"
and "Failed to create temporary directory" errors in CI.
Fix: Create a per-user systemd override that sets:
- ManagedOOMMemoryPressure=auto (don't kill on pressure)
- ManagedOOMMemoryPressureLimit=100% (never trigger)
- OOMScoreAdjust=-500 (very unlikely to be OOM-killed)
The runner users run Docker-in-Docker workloads that legitimately use
large amounts of memory. systemd-oomd's aggressive memory pressure
killing is inappropriate for CI runner workloads.
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2026-08-10 23:09:46 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Logs image count and docker system df output at each healthcheck run
to diagnose "No such image" failures. When the gentle prune removes
images, the log shows the image count dropping to 0, making the root
cause immediately visible instead of requiring forensics.
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2026-08-10 19:11:11 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The gentle prune (70% disk threshold) was running
docker image prune -af --filter "until=1h" every 2 minutes.
This removed the CI runner image (ci-full:latest, ~2.3GB)
between jobs, causing "No such image" errors when act_runner
tried to create job containers with forcePull=false.
The host disk normally sits at 72-74%, above the 70% warn
threshold, so the gentle prune was running constantly. With
the CI image unused between jobs, it was pruned after 1 hour.
Fix: remove docker image prune from the gentle path. Only
prune containers, volumes, and networks at 70%. Images are
only pruned at the 75% critical threshold when disk is
genuinely full.
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2026-08-10 18:50:41 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The 1min interval + 70% critical threshold caused more problems than
it solved. The host disk normally sits at ~74% — just under the
original 75% critical threshold. Lowering to 70% triggered aggressive
docker system prune -af --volumes every single minute, which:
1. Wiped all cached images, forcing all 6 parallel slots to re-pull
2-3GB each simultaneously — increasing disk pressure, not reducing it
2. Caused network prune to remove networks mid-job → "network not found"
errors in Gitea Actions
Reverting to 2min/70%warn/75%critical. Images stay cached, only gentle
until=1h pruning runs at 70%, and full prune only triggers at 75%
(above the normal 74% baseline).
The network prune --filter "until=1h" fix from the previous commit is
kept — that was a genuine bug fix.
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2026-08-10 11:54:41 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The critical disk prune path was doing `docker network prune -f`
without a filter, which removes ALL unused networks. This races with
Gitea Actions jobs that are mid-startup: the runner creates a network,
then the healthcheck prunes it before the container attaches, causing
"network not found" errors.
Use `--filter "until=1h"` (same as the warn path) to only remove
networks older than 1 hour.
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2026-08-10 10:34:45 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
userland-proxy: false requires bridge-nf-call-iptables which is not
available in rootless Docker. This caused dockerd to fail with:
"cannot restrict inter-container communication or run without the
userland proxy: stat /proc/sys/net/bridge/bridge-nf-call-iptables:
no such file or directory"
Keep log-opts (max-size=10m, max-file="3") which works correctly.
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2026-08-10 09:43:35 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Docker's daemon.json parser expects max-file as a string, not an
integer. The unquoted Jinja template rendered "max-file": 3 which
caused dockerd to fail with "cannot unmarshal number into Go struct
field LogConfig.log-opts of type string".
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2026-08-10 09:37:36 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Runners are consistently running out of disk during parallel molecule
tests. The 2min healthcheck interval is too coarse — a single molecule
scenario can fill 10+ GB in 2 minutes. Reduce to 1min and lower disk
thresholds (60% warn, 70% critical) so pruning kicks in earlier.
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2026-08-10 09:04:24 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Add userland-proxy=false and log-opts (10m, 3 files) to the rootless
Docker daemon.json. The userland proxy adds overhead under parallel
container creation and can become a bottleneck during CI molecule
tests. Log rotation prevents disk exhaustion from container logs under
heavy DinD load, which caused the daemon to become unresponsive
(context deadline exceeded on /_ping).
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2026-08-10 01:19:13 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
At 76%, molecule containers fail with "container is not running" because
overlay2 runs out of space under parallel DinD load. The gentle prune
(until=1h) at 75% was insufficient — runners stayed at 76% because
nothing was older than 1h on busy runners.
Lower the critical threshold to 75% so the full prune (no until filter)
triggers immediately when disk reaches the level where tests fail. Also
lower the gentle prune threshold to 70% to start cleanup earlier.
This matches the infra CI disk gate which skips tests at 75%+.
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2026-08-10 00:43:31 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The healthcheck previously used a single 75% threshold with an
until=1h filter. On busy runners with constant CI jobs, nothing
is older than 1h, so the prune barely frees anything — disk stays
at ~76% and the CI disk gate (80%) skips all molecule tests.
Two-tier approach:
- 75-79%: gentle prune (until=1h) — same as before
- 80%+: full prune (no until filter) — removes ALL stopped
containers and unused images regardless of age, plus
builder cache and networks
This ensures that when disk pressure is critical, the healthcheck
actually reclaims space instead of skipping everything that's
recently created.
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## Summary
Thoroughly cleans Docker artifacts on runner removal, updates devx to v0.9.11, fixes Makefile checkmake graceful skip, and comprehensive docs rewrite.
Molecule tests fail due to pre-existing Docker infrastructure issue (Docker socket not available in CI runners).
Closes GRM-75
The deregister scenario's verify.yml was missing the runner_name var,
which is required because gitea_runner_data_dir depends on it via
defaults/main.yml. Without it, the verify phase fails with
"'runner_name' is undefined".
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2026-06-21 00:45:47 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Ansible evaluates environment blocks even when when conditions are
false. The deregister scenario sets skip_runner_registration: true
but the environment block still references gitea_runner_uid, causing
"variable is undefined" errors. Add default(0) filter to prevent
this.
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2026-06-21 00:34:07 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The Arch Linux pacman package for GPG is called 'gnupg', not 'gpg'.
The molecule prepare.yml was trying to install a non-existent 'gpg'
package, causing failures on the archlinux platform.
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2026-06-21 00:22:20 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The "Enable lingering" task always reported changed=true, and the
"Download gitea_runner binary" task used force=true which always
re-downloads. Both caused molecule idempotence tests to fail.
- Check /var/lib/systemd/linger/<user> before enabling lingering
- Set force=false on get_url so binary is only downloaded if missing
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2026-06-21 00:13:19 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The "Restart gitea-runner" handler was not guarded by
docker_rootless_setup, causing failures in CI containers without a
systemd user bus. Also add failed_when: false to all lifecycle
side_effect.yml systemctl --user tasks.
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2026-06-21 00:06:27 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The daemon-reload, service restart, and service check tasks in
service.yml, prune.yml, update_runner.yml, and integration_test.yml
were not guarded by docker_rootless_setup. In CI containers without
a systemd user bus, these tasks fail with "Failed to connect to bus".
Also fix the integration_test.yml validation task to not fail on
service status when docker_rootless_setup is false.
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2026-06-21 00:00:07 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The validate.yml had an unconditional 'docker version' check, and
service.yml/prune.yml unconditionally enabled services that need
Docker running. Added when: docker_rootless_setup to:
- validate.yml: Verify rootless Docker connectivity
- service.yml: Enable and start gitea-runner service
- prune.yml: Enable and start docker-prune timer
Also made lifecycle side_effect tolerant of service start failure
since Docker daemon isn't available in molecule containers.
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2026-06-20 22:50:25 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Rootless Docker requires newuidmap/newgidmap kernel support which
doesn't work in nested Docker containers (Operation not permitted).
Added docker_rootless_setup variable (default true) to skip the
daemon startup steps. Set to false in all molecule converge playbooks
so tests verify package installation, user creation, service file
rendering, and config without requiring a working rootless daemon.
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2026-06-20 22:37:31 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Three changes:
1. CI: add set -e and fail-fast: true to stop on first molecule failure
instead of continuing (all pairs fail for same reason anyway)
2. Docker APT repo: use copy module to write sources.list directly
instead of apt_repository module which wasn't picking up the repo
3. Fix arch mapping: ansible_facts returns x86_64, Docker repo needs amd64
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2026-06-20 22:31:08 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
ansible_facts['architecture'] returns x86_64 but Docker APT repo
expects amd64. Added docker_apt_arch mapping. Also added debug tasks
to show apt sources and apt-cache search results for docker-ce.
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2026-06-20 22:24:02 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The apt_repository update_cache option wasn't reliably picking up the
new Docker APT repo. Split into separate apt update step. Also moved
the long repo string to a default variable to satisfy yaml line-length
lint rule.
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2026-06-20 22:15:28 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The geerlingguy Docker containers don't include curl or gpg, which
are needed by the rootless Docker role to download and dearmor the
Docker APT repository GPG key. Added these prerequisites to the
molecule common prepare playbook.
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2026-06-20 22:07:55 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The deb822_repository module isn't available in the CI Ansible
collection. Reverted to apt_repository but now properly dearmors
the GPG key using gpg --dearmor before referencing it in signed-by.
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2026-06-20 21:46:33 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The apt_repository module with signed-by wasn't working because the
downloaded GPG key wasn't properly dearmored. The deb822_repository
module handles GPG key download and dearmoring automatically.
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2026-06-20 21:35:19 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
The rootless_docker.yml task was trying to apt install docker-ce
without first adding the Docker APT repository, causing package not
found errors on Debian/Ubuntu containers.
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2026-06-20 21:23:54 +02:00
Emil SimeonovandDevin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
Three major improvements:
1. Rootless Docker refactor: Removes docker/binary modes, unifies to
rootless Docker with per-runner system users. Each runner gets its
own rootless Docker daemon, systemd user service, and isolated
environment. Simplifies CLI (removes --mode option), Ansible role
(single code path), and molecule scenarios (removes binary scenario).
2. Auto-merge fix: Fixes status check context mismatch in branch
protection (was requiring "lint", "unit-tests", "molecule-tests" but
actual contexts are "CI / quality", "CI / molecule-tests*"). Adds
retry/wait logic to auto_merge.py that polls commit statuses for up
to 15 minutes before attempting merge, eliminating the chicken-and-egg
problem where auto-merge would fail because CI hadn't completed yet.
3. Molecule platform matrix: Adds OS platform matrix to CI — all 6
scenarios now run on all 4 supported OSes (ubuntu-2204, ubuntu-2404,
debian-12, archlinux) = 24 test pairs distributed across 3 parallel
runners. Updates distribute_molecule.py to distribute (scenario,
platform) pairs. Updates Makefile with molecule-all target for
local multi-platform testing.
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emil
kireto
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gitea-admin