The Proxmox-side LXC Docker inventory poll occasionally produces an
ok=true report with zero CONTAINER lines but a valid PS_OK marker:
docker ps -a inside the LXC genuinely returned an empty list for
that one call, typically while watchtower is briefly recreating a
container or the dockerd is mid-restart. ApplyDockerReport then
wipes the host's container list, every connected WebSocket client
sees every row for that host flash blank, and the next successful
poll 10 s later restores it.
Before calling ApplyDockerReport, check whether the host already
has containers tracked in state. If yes and the new report has
zero containers, log at debug and skip the apply, counting the
poll as skipped rather than collected. A host that is genuinely
empty still applies on first sight (no previous containers means
no previous state to protect).
Add regression tests for both branches: a populated host receiving
an empty report keeps its container list; a freshly-seen empty
host still gets created.
The Proxmox-LXC Docker hosts row was blank (no CPU / MEM-used /
Disk) and the display name appended a noisy "(LXC <vmid>)" suffix,
because the inventory script only collects Docker daemon metadata,
not host resource usage. Pulse already polls the same data for the
underlying LXC via the PVE cluster/resources endpoint, so the
Docker host row should mirror what the rest of Pulse already knows.
Before applying each LXC inventory report, enrich the Host info
with CPU / Memory / Disk / Uptime taken from the source LXC's
existing models.Container. Drop the "(LXC <vmid>)" suffix from
the synthesized display name. On the frontend, detect the
proxmox-lxc-docker: hostSourceId prefix and emit a styled
"LXC <vmid>" badge into the System column instead of the
filtered-out runtime-only "docker" badge.
The Proxmox-side LXC Docker inventory script masked `docker ps`
failures with `|| true`, so when `pct exec` was truncated, slow, or
`docker ps` itself transiently failed, the parser produced an
ok=true report with `containers=[]` and `ApplyDockerReport` blanked
the host's container list. Containers then reappeared on the next
successful poll, producing the visible flicker on the Docker page.
Emit a `PS_OK` marker only when `docker ps` exits cleanly, and
refuse to apply the report when the marker is absent. A genuine
"host has zero containers" state still applies (PS_OK present,
zero CONTAINER lines), but a truncated or failed poll now skips
apply and lets the previous container list survive the inter-poll
gap. Add regression tests for both paths.
Adds automatic Docker detection for Proxmox LXC containers:
- New HasDocker and DockerCheckedAt fields on Container model
- Docker socket check via connected agents on first run, restart, or start
- Parallel checking with timeouts for efficiency
- Caches results and only re-checks after state transitions
This enables the AI to know which LXC containers are Docker hosts
for better infrastructure guidance.
