- Agent: started_at comes from inspect's State.StartedAt (nanoseconds
trimmed; Docker's zero time is "never started"), not the list's Created,
so a restarted container's uptime counts from its restart.
- A rising restart_count between two snapshots emits a "restart" event
("restart #3", or "3 restarts, now #5"), said instead of a start; a
restart then a death gives both. A count that falls (recreated under the
same name) says nothing. The timeline draws it as ↻.
- Network and disk I/O count what the kernel calls physical: interfaces
not under /sys/devices/virtual/net (bridges, docker0, veth, vxlan, tun),
block devices with a device behind them (not dm, md, zram), so a byte is
not counted twice. Where /sys calls everything virtual (an agent in LXC)
the name-filtered set is kept rather than reporting no traffic.
- Agent tests updated for #5152's (status, detail, containers) and
(is_manager, topology) shapes; the no-Docker disk test now states the
case it was passing for by accident.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Extends the push agent (v1.2.0) with the Netdata-style signals the operator
wants: per-core CPU, per-interface network throughput and per-disk I/O
(rates derived in-agent from monotonic /proc counter deltas, with
counter-reset clamping), hardware temperatures (/sys/class/hwmon),
memory-pressure PSI (/proc/pressure), and cached/buffers memory breakdown.
All stdlib-only.
Server side needs no migration — these land as additional rows in the shared
PluginMetric table via _expand_sample_to_metrics. Per-resource series use a
':' in resource_name (host:net:eth0, host:core0, host:temp:Package) so the
existing fleet widget's ':' filter ignores them; host-level totals/max are
emitted at the bare host resource. New sample keys are optional, so older
agents keep ingesting unchanged.
Unit tests for the new parsers, rate/reset logic, and the expander contract.
Data foundation for the Netdata-style host view (task #867).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
bvandeusenandClaude Opus 5.5