Follow-on to the plugin_metrics indexes. plugin_metrics is already retention-
bounded (core cleanup prunes > data.retention_days, default 90d) and charts top
out at 30d, so the cost wasn't growth — it was the read path shipping raw rows
to Python.
- _history_for_host: bucket + average in SQL via date_bin (epoch-aligned, ~120
buckets) instead of fetching every raw sample (a 30d range was hundreds of
thousands of rows) and downsampling in Python. Uses the new
(source_module, resource_name, recorded_at) index.
- _latest_metrics_for_host: DISTINCT ON (resource_name, metric_name) ORDER BY
recorded_at DESC — newest row per group in one index-ordered pass, replacing
the GROUP-BY-max subquery self-joined back to the whole history.
- Integration test validates both against Postgres.
Deliberately not a materialized raw→hourly rollup: these query-side changes
deliver the speed; a rollup would additionally cut storage and remains a future
option if scale demands it.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
Backend for the image/disk panel (milestone 77 #942). Agent gains
collect_disk_usage() — one /system/df call (gated on containers existing, so
Docker-less hosts pay nothing), surfacing reclaimable bytes (image size held by
unreferenced images), layers/containers/volumes/build-cache sizes, and the top
50 images by size. Emitted as sample["docker_disk"]; host_agent ingest tracks
the newest sample's copy and hands it to the docker capability as a 5th arg.
New current-state tables docker_disk_usage (one row/host) + docker_images
(per-host image rows), docker_007 migration; ingest upserts the summary and
replaces the image set per host (stale images pruned). Unit tests for the df
parsing/reclaimable math + build_sample gating; integration test for
persistence + image-set replacement.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
Wires the agent's enriched + swarm payloads through the docker.persist_host_
samples capability:
* Swarm topology — persist sample["swarm"] into docker_swarm_services /
docker_swarm_nodes (upsert + prune stale, host-scoped so two managers don't
clobber). Migration docker_005 adds services.placement_json for the
task→node placement the agent now reports.
* Lifecycle events — _derive_events (pure, unit-tested) diffs the newest
snapshot against stored per-container state: start / stop / die (non-zero
exit) / oom / health_change → docker_events rows. Skipped on a host's first
snapshot so the baseline doesn't emit a start per existing container.
* Alerts — record restart_count (always) and is_healthy (1.0/0.0, only when a
HEALTHCHECK exists) alongside cpu/mem, under host-scoped resource names;
METRIC_CATALOG[docker] gains restart_count + is_healthy so they're alertable.
host_agent ingest captures the newest sample's swarm object and threads it to
the capability (now persist_host_docker(session, host, snapshots, swarm=None));
invoked when containers OR swarm are present, under the same SAVEPOINT. Unit
tests cover the event-diff matrix; integration tests cover event derivation
across two snapshots and swarm topology round-trip (incl. placement).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
Docker collection moves off the central single-socket scrape onto the host
agent, giving Docker a real per-host dimension. The Steward host now reports
its own containers like any other host, and same-named containers on different
hosts no longer collide.
- agent: stdlib UDS Docker client (AF_UNIX HTTP/1.1, Connection: close,
chunked-aware), collect_docker() ports the cpu%/mem math; sample["docker"]
added best-effort (silent-skip on absent/unreadable socket). AGENT_VERSION
1.2.0 → 1.3.0; optional docker_socket config key.
- ingest: host_agent ingest hands per-host container snapshots to the docker
plugin via a new "docker.persist_host_samples" capability (no hard import,
no-op when docker disabled), inside a SAVEPOINT so a docker failure never
sinks the host metrics. Resource names are host-scoped ("<host>/<name>").
- schema: docker_containers re-keyed (host_id, name); docker_metrics gains
host_id; docker_002 migration DROP+recreates (dev-only, rule 122).
- ui: Docker page + widgets grouped by host with host links; new per-host
Docker panel embedded on the Hosts hub (gated on docker enabled via a new
enabled_plugins template context). Replaces the SQLite-only strftime
bucketing with DB-agnostic Python bucketing.
- provisioning: install/provision playbooks add steward-agent to the docker
group (best-effort) so the agent can read the socket.
- removed central scrape: docker scheduler.py + scraper.py deleted; plugin.yaml
socket_path/scrape_interval_seconds/include_stopped dropped (plugin 2.0.0).
- tests: agent docker collector units (math, chunked decode, silent-skip,
sample shape, config) + integration (host-scoped schema + persistence).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016Jg27rgypiW2efULXJDtMC
The agent already collects + ingests net throughput, disk I/O, and temps;
add them to the fleet-glance rows (fmt_bps + two-line io cells + temp with
70/85C threshold color), each shown only when the host reports it so VMs/
containers without sensors don't show blank cells.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- Hosts-Overview: move the CPU sparkline inline next to the cpu % value it
represents (was floated far right on the name line, reading as unrelated).
- Host Agent history widget: caption the chart with the host it represents
(the panel title is generic) — links to the host hub.
- History widget: snap the y-axis to a stable 0..next-10%-band ceiling instead
of auto-scaling to the exact peak, so the 'zoom' no longer jumps each poll.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The agent reports every few seconds, so multi-hour history series were hundreds–
thousands of points — a dense, noisy line (esp. CPU). Bucket-average server-side
to ~120 points (keeps the shape, drops the noise) for both the history-graph
widget and the host-detail charts. Also fix the chart tooltip title showing the
raw epoch-ms (e.g. 1,781,720,471,459) — format it as HH:MM.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Operator ask: show the graphs next to their fields in the fleet widget, like the
host page's AGENT panel. Each row now renders cpu/mem/disk/load as a value with a
trend sparkline beneath it (1h window), instead of bare numbers.
- _fleet_rows fetches a per-host recent series (cpu/mem/load host-level, disk from
the root mount) in one 1h query and attaches a sparkline per metric to each row.
- widget_table.html lays out a metric cell (label + threshold-coloured value +
sparkline) per field, mirroring panel.html. Threshold colour is computed in the
loop and passed into the cell macro (keeps Jinja macro scope clean).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Milestone 72 phase C — bring the host-view graphs onto the dashboard:
- host_resource_history widget reworked into a real host-view chart: epoch-ms
linear axis (no Chart.js date adapter), themed like the host-detail charts,
maintainAspectRatio:false so it fills the resized panel, unique canvas per
widget instance (wid), and empty states ("pick a host" / "no metrics yet").
Was previously unusable — it had a broken time axis and no way to choose a host.
- Add a "host" param type: the edit form renders a live dropdown of hosts
(dashboard routes now pass the host list to the editor); the chosen host_id is
stored in config and fed to the widget.
- Hosts-overview widget gains a per-row CPU sparkline (last hour) via the shared
sparkline_svg helper — the host-view at-a-glance trend, on the main widget.
Charts/sparklines render only in the browser, so CI can't exercise them — needs
an operator visual check.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Run UX: when start_run throws before/around launch (e.g. ENOSPC creating the
temp dir — the box is out of disk), the run was marked "failed" with empty
output. Now the exception is broadcast + written to the run output/results so
the run view shows e.g. "[run error] OSError: [Errno 28] No space left on
device" instead of a blank failure.
Widget audit follow-ups (no broken links were found; these are consistency):
- host_resource_history widget now charts root (/) disk, consistent with the
host panel (was the opaque "disk worst").
- host_resources widget: tooltip on the health dot explaining it warns on the
worst mount while the number shows root.
- status_overview widget detail_url /status → /status/ (avoid redirect).
- Normalize ad-hoc widget empty-states to the shared .empty style (wording,
which distinguishes "configured" vs "data yet", preserved).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- Each at-a-glance metric (CPU, Memory, Disk /, Load) now shows a 6h sparkline
(reused core.status.sparkline_svg + a recent-series query; disk uses the root
mount sub-resource) so trend/consistency is visible, not just the instant.
- Load is now normalized: "Load /core" = 1m load ÷ CPU cores as % (100% = run
queue matches capacity), comparable across different hardware. Cores derived
from the per-core CPU metrics already collected — no agent change. Raw load
in the tooltip.
- Added a "Pressure 10s" line: PSI cpu/mem/io (some, avg10), the
hardware-independent saturation signal already collected by the agent.
Scribe #898.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The "Disk (worst)" number was opaque at a glance. Show the root filesystem (/)
usage instead — what people actually care about — on the host panel and the
dashboard widget. "Worst" is kept only for the widget's health dot (so a full
/var or /data still warns) and on the full-metrics page (per-mount + worst
trend). Added hover tooltips defining CPU / Memory / Disk / Load.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
The assertion failed ("Pass steward_url/token/pubkey") because those were
injected as inventory HOST vars, but the playbooks declared them in the play
`vars:` block — and play vars OUTRANK inventory host vars, so the empty
defaults won and the injected values never reached the play.
- Pass globals (steward_url, steward_pubkey, steward_user, agent_interval) as
extra-vars via the JSON -e @file (highest precedence, space-safe). Keep only
the per-host steward_token as an inventory host var.
- provision.yml / install.yml: drop steward_token from `vars:` so the host var
isn't shadowed; assertions use `| default('')` for the un-defaulted token.
This was the next layer under the inventory-format fix — first the inventory
wouldn't parse, now the injected vars actually apply.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
A failed provision looked successful in two ways:
1. The host panel showed the agent as deployed (metrics + Update/Rotate/Remove)
because provision/deploy mint the registration row BEFORE the playbook runs
and the panel keyed "installed" on that row. Now gated on the agent actually
checking in (reg.last_seen_at). Three states: reporting (metrics + lifecycle),
pending (token minted but no check-in → "no metrics yet, deploy may be
running/failed" banner + retry + Clear pending registration), and none
(install path).
2. The run reported success though nothing ran — ansible-playbook exits 0 on
"no hosts matched"/empty inventory. The executor now treats an empty PLAY
RECAP (returncode 0 but no hosts executed) as failed, with a clear failure
note. Non-zero exits and recap failed/unreachable were already caught.
Scribe issue #887.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
generate_inventory() emits Ansible's dynamic --list shape (all.hosts is a
LIST, vars under _meta) — valid only as an executable inventory script's
stdout. We were writing it to a static file and passing -i, so Ansible's yaml
plugin rejected it ("Invalid 'hosts' entry for 'all' group, requires a
dictionary, found ...list...") and fell back to implicit localhost → "no hosts
matched". Affected every steward:* scope run; surfaced on the first real
provision.
- New inventory_to_yaml(inv): convert the --list dict → a valid static YAML
inventory (all.hosts dict keyed by host, groups under all.children, group
vars preserved, injected per-host vars like steward_token retained).
- Wire it into runner.trigger_run, host_agent deploy + provision.
- executor writes the file as inventory.yml so the yaml plugin's extension
check reliably claims it.
- generate_inventory unchanged (still the --list dict); conversion happens at
write time. Unit tests added.
Scribe issue #885.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
fetch_scope_targets() runs a SELECT that autobegins the session transaction
(SQLAlchemy 2.0), so the following `async with db.begin()` raised
"A transaction is already begun on this Session" → 500 on both
/plugins/host_agent/deploy and /provision.
Mint registrations directly into the autobegun transaction, build the
inventory while the ORM objects are still live, then await db.commit().
Escaped CI because unit tests use a mock db_sessionmaker; no integration
test exercises these routes (follow-up noted in Scribe issue #884).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Dev-only instance, no bookmarks — per family rule 22, fully remove old paths
instead of shimming them.
- Delete the /plugins/host_agent/ (index) and /plugins/host_agent/settings/
redirect routes; delete the now-dead host_list.html fleet template.
- Move the remaining management POST routes off /settings/ to /fleet/
(add-host, rotate-token, delete) — single canonical prefix.
- Repoint real callers to canonical URLs: dashboard widgets (host resources →
/hosts/, history → /plugins/host_agent/fleet/), the full-metrics page
breadcrumb + back link (→ the host hub), Settings→Ansible link, and the
agent panel's curl-install link.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
- Hosts list: new Agent column (latest CPU/mem read from the generic
PluginMetric table — no host_agent import) + an admin "Agent fleet" button.
- /plugins/host_agent/ (old fleet page) now redirects to /hosts/ (folded into
the hub; kept as a redirect so widgets/links don't 404).
- Agent management moved off the "settings" URL: the management page is now
/plugins/host_agent/fleet/ ("Agent fleet" — bulk provision/install/update +
registrations + curl install), reachable from the Hosts list. Old
/plugins/host_agent/settings/ redirects there. Per-host management lives on
the host detail page; this page is now explicitly the bulk/fleet view.
Milestone 70 phases 2-3. Phase 4 (plugins capability/integration split + nav
cleanup) next.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Make Hosts the front-and-center hub. A host now has a real detail page at
/hosts/<id> that pulls its facets into one view, instead of management being
scattered across a nav-less Host-Agents area and the edit form.
- hosts: new GET /hosts/<id> detail route + hosts/detail.html. Shows the
monitors summary (ping/DNS status + latency + uptime 24h/7d/30d), an Ansible
section (linked target, link/create, run-playbook), and an embedded Agent
panel. Hosts list name links here; ansible-link redirects here.
- host_agent: GET /plugins/host_agent/panel/<host_id> — a self-contained HTMX
fragment embedded into the core hub across the plugin boundary (core never
imports plugin models). Shows live agent metrics + Update/Rotate/Remove when
installed, or the provisioning path when not: inline "generate managed key"
warning, a prompt to link an Ansible target first, then Provision (bootstrap
password) / Install (managed key) tied to the host's target scope.
Part of milestone 70 (Hosts hub). Phase 2+ will enrich the list, redirect the
old fleet/settings pages, and re-taxonomize plugins into capabilities vs
integrations.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Provisioning review corrections + the matching frontend, plus breadcrumb
header integration.
- provision.yml: authorize the managed pubkey with a regexp match on the
' steward-managed' comment so rotating the key REPLACES the host's steward
key in place instead of stacking a second authorized entry. Hand-added keys
(other comments) are untouched.
- update.yml (new): refresh agent.py + restart only. Does NOT rotate the token
or rewrite /etc/steward-agent.conf — the host keeps its identity. Asserts the
agent is already installed and fails clearly otherwise.
- host_agent /update route: runs update.yml as the managed steward user (no
token minting). Token rotation stays a deliberate action.
- settings/ansible/generate-key honors a safe relative `next` redirect, so an
inline trigger elsewhere returns to its page.
- Host Agents settings: reworked into a clear lifecycle — an intro card that
explains it runs Ansible to deploy the agent (+ inline "generate managed key"
warning/trigger when none exists), then three labelled cards: 1 Provision,
2 Install/enroll, 3 Update. Each explains what it does.
- base.html: breadcrumb now renders as a kicker line directly above the page
title (moved below alerts, tightened margin) so nested and top-level views
share one consistent header.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Turn the agent-install playbook into a full provisioning + maintenance
path. Solves the bootstrap chicken-and-egg: first contact uses an
operator-supplied password (one run, never stored), which creates a
dedicated `steward` login account with NOPASSWD sudo + Steward's managed
public key. Every run thereafter connects as `steward` with the managed
key — fully unattended (scheduled prune, agent updates).
- core/crypto: generate_ssh_keypair() — ed25519, OpenSSH formats.
- settings: ansible.ssh_public_key (non-secret, displayed) + ansible.ssh_user
(default steward); to_ansible_cfg extended.
- settings UI + route: "Generate managed key" (private encrypted, public
shown to copy) + SSH-user field.
- executor: build_bootstrap() writes a 0600 vars file (-e @file) for the
per-run user/password — never argv, never DB, never logged; drops the
managed key when a bootstrap password is given; --user floor from the
global ssh_user when no override.
- runner.trigger_run: pass-through `connection` kwarg, deliberately NOT
persisted on AnsibleRun.params (password stays out of the DB).
- bundled/host_agent/provision.yml: create steward user + authorized_keys
+ /etc/sudoers.d/steward (visudo-validated) + agent install.
- host_agent: /provision route + "Provision a fresh host" card (bootstrap
user/password; injects pubkey + user + token as space-safe JSON hostvars).
- Dockerfile: add sshpass (Ansible shells out to it for password SSH).
- tests: keypair generation + build_bootstrap (secret stays off argv).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Implements #253's framework: a small core capability registry
(steward/core/capabilities.py) where a module/plugin publishes a named,
role-gated action and a consumer discovers it via has_capability() and runs it
via invoke_capability() — no hard import, graceful degradation, permission
propagation (actor role checked against the capability's required_role).
Core publishes "ansible.run_playbook" (operator) wrapping ansible.runner.
trigger_run (extended to accept a caller-built inventory). First consumer: the
host_agent plugin gains "Deploy via Ansible" on its settings page — pick an
inventory target/group and it installs/updates the agent via the bundled
host_agent/install.yml, minting a fresh token per host and injecting it as an
inventory hostvar (turning per-host curl|sh into one run). Exposed role
ordering as middleware.role_meets. Unit tests for the registry + role checks.
Task #253 (milestone #37).
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Surfaces the metrics the agent now collects (task #868). Adds a viewer-facing
fleet page (/plugins/host_agent/) with per-host cards (CPU/mem/disk/load/temp,
stale flag) and a per-host detail page (/plugins/host_agent/<id>/) — the link
the fleet widget already pointed at but had no route for.
Detail page shows current gauges (CPU, memory incl. swap/cache, load, network
rx/tx, disk I/O, temp max, memory/cpu/io PSI), per-core CPU bars, per-mount
filesystem bars, and per-interface/disk/sensor breakdowns, plus history charts
(utilization %, throughput B/s, load & pressure) over a selectable range.
Charts use a linear epoch-ms x-axis so no Chart.js date adapter is needed.
Stale state uses the plugin's stale_after_seconds threshold. Repoints the
host_resources widget detail link from admin settings to the new fleet page.
Completes milestone #68 (task #867).
Co-Authored-By: Claude Opus 4.8 (1M context) <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>
The agent now detects its own primary non-loopback IP (UDP-socket trick, no
packets sent) and sends it in the metadata bag; bumps AGENT_VERSION 1.0.0->1.1.0
and re-detects on SIGHUP. The server persists it on HostAgentRegistration.host_ip
and mirrors it into Host.address ONLY when that field is blank — an admin-typed
address is never overwritten. The reported IP shows in the settings table so
admins can see drift regardless.
- agent.py: detect_primary_ip(); host_ip in collect_metadata(); refresh on reload
- routes.py: pure pick_host_address() helper; ingest persists host_ip + mirrors
- models.py + migration host_agent_002_host_ip: new String(45) column
- settings_list.html: Reported IP column
- plugin.yaml: 1.0.0 -> 1.1.0
- tests: pick_host_address (fill-when-blank / never-clobber / no-op),
detect_primary_ip (never raises, non-loopback), metadata carries host_ip
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
First-party plugins (host_agent, http, snmp, traefik, unifi, docker) are now
tracked under plugins/ and baked into the image, so they version atomically
with core — ending the cross-repo import drift the roundtable->steward rename
exposed. History for these files is preserved in the archived Roundtable-plugins
repo.
Plugin discovery becomes multi-root: PLUGIN_DIR (single) -> PLUGIN_DIRS
(bundled first, then external) + PLUGIN_INSTALL_DIR. Bundled ships in the image;
third-party plugins still mount at runtime into the external root
(STEWARD_PLUGIN_DIR, default /data/plugins) and downloads/installs land there.
Bundled shadows external on a name collision.
- config.py: load_bootstrap returns plugin_dirs + plugin_install_dir
- app.py: iterate PLUGIN_DIRS at the migration + load sites
- migration_runner.py: discover_all_in() unions every plugin root
- plugin_manager.py: resolve_plugin_path() (pure, first-root-wins); load /
install / hot-reload span all roots; installs target the external root
- settings/routes.py: _discover_plugins scans all roots, dedup bundled-first
- Dockerfile: COPY plugins/ ; docker-compose: drop host bind, document external
- tests/test_plugin_dirs.py: resolution, multi-root discovery, bootstrap split
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
bvandeusen