`loki.source.journal "default"` no longer pins `path = "/var/log/journal"`.
Upstream omits the field, which lets Alloy default to BOTH
`/var/log/journal` (persistent) and `/run/log/journal` (volatile). The
explicit path silently dropped journal logs on hosts with volatile-only
storage. Matches the canonical Linux Node integration template.
Also bumps the image six minor versions to current stable. Doc records
the 2026-04-26 re-audit.
Copies the exact 157-metric list from the Linux Node integration's
Metrics anchor as the cadvisor keep-list already does for Docker
(16 metrics). Replaces the earlier `drop node_scrape_collector_.+`
rule, which was the integration page's alternate snippet but didn't
ship the explicit allowlist users see in the docs.
`instance:node_num_cpu:sum` from the Metrics section is intentionally
omitted — it's a recording-rule output computed server-side by
Grafana Cloud's ruler, not produced by the agent.
Doc + README updated to point at the Metrics anchors directly so the
source of truth is unambiguous.
Adds docs/upstream-sources-of-truth.md as the binding policy for what
this repo follows when deciding metrics, labels, log pipelines, and
dashboards to ship.
Hard rule: only tier 1-4 official sources (Grafana Cloud integration
docs, github.com/grafana/*, github.com/prometheus/*, the user's own
authenticated Grafana Cloud API). No third-party Terraform exports,
community gists, blog posts, or AI summaries — even when names match.
Records a tier-1+2 audit confirming the current cadvisor allowlist
matches both the Docker integration page and grafana/jsonnet-libs
docker-mixin/docker.json. Notes that tier-4 verification against the
live stack's full integration dashboard set was not performed and is
the only known gap.
Document a Coolify-specific noise pattern observed in the journal
pipeline: ~300 root sessions/hour from the Coolify host's connection
checks. Verified against coollabsio/coolify v4.x source (Kernel.php,
ServerManagerJob, ServerCheckJob, SshMultiplexingHelper).
Includes:
- exact call flow and skip conditions per Coolify source
- triage commands and key-fingerprint matcher
- two mitigations: drop at Alloy (loki.process stage.drop) or enable
Sentinel server-side to bypass the SSH polling entirely
- framing: Coolify-only, base setup unchanged
tiennm99