bvandeusenandClaude Opus 5.5
17abe450cc
The Hosts — Overview widget opens with a verdict ("VDNT-Util01: CPU high."
or "All 3 hosts healthy."), then one row per host under one header: CPU,
memory, disk / and load. Rows sort by host_glance: a down monitor, a
reading past critical, a quiet agent, a warning, then the healthy. Load
reads "16.8 / 8 cores", graded per core as Settings → Thresholds intends
(cores counted from the per-core CPU sub-resources, as on the host page).
A quiet agent's last figures are shown uncoloured, with when it last reported.
Ping and 24h uptime are gone from this widget: they belong to Monitors. So
are the unlabelled CPU sparkline and the 30-day uptime query it no longer
needs.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
311 lines
13 KiB
Python
311 lines
13 KiB
Python
from __future__ import annotations
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import asyncio
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import uuid
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from datetime import datetime, timezone
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from quart import Blueprint, render_template, request, redirect, url_for, current_app, session
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from sqlalchemy import select
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from steward.ansible import executor, sources as ansible_src
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from steward.alerts import service as alert_svc
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from steward.auth.middleware import require_role
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from steward.core import renames
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from steward.core.audit import audit_request, log_audit
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from steward.models.ansible import AnsibleRun, AnsibleRunStatus
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from steward.models.hosts import Host
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from steward.models.users import UserRole
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from steward.hosts import service as host_svc
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hosts_bp = Blueprint("hosts", __name__, url_prefix="/hosts")
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def _ansible_source_names() -> list[str]:
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try:
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return [s["name"] for s in ansible_src.get_sources(current_app.config.get("ANSIBLE", {}))]
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except Exception:
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return []
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@hosts_bp.get("/overview/widget")
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@require_role(UserRole.viewer)
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async def overview_widget():
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"""Dashboard widget: each host's resources, worst first (#5251). Uptime and
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latency belong to the Monitors widget, so this one doesn't read them."""
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async with current_app.db_sessionmaker() as db:
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hosts = (await db.execute(select(Host).order_by(Host.name))).scalars().all()
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host_status = await host_svc.host_status(db, [h.id for h in hosts])
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agent = await host_svc.agent_overview_by_host(
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db, [h.name for h in hosts], host_svc.agent_stale_after_seconds(current_app.config))
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rows = host_svc.host_glance(hosts, host_status, agent, current_app.config.get("THRESHOLDS", {}))
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return await render_template("hosts/overview_widget.html", rows=rows)
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@hosts_bp.get("/")
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@require_role(UserRole.viewer)
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async def list_hosts():
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async with current_app.db_sessionmaker() as db:
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result = await db.execute(select(Host).order_by(Host.name))
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hosts = result.scalars().all()
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host_status = await host_svc.host_status(db, [h.id for h in hosts])
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uptime = await host_svc.compute_uptime(db)
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agent = await host_svc.agent_overview_by_host(
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db, [h.name for h in hosts], host_svc.agent_stale_after_seconds(current_app.config))
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hosts = sorted(hosts, key=lambda h: (
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host_svc.host_rank(host_status.get(h.id), agent.get(h.name)), h.name.lower()))
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return await render_template(
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"hosts/list.html",
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hosts=hosts,
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host_status=host_status,
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uptime=uptime,
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agent=agent,
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)
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@hosts_bp.get("/<host_id>")
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@require_role(UserRole.viewer)
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async def host_detail(host_id: str):
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"""The host hub: monitors + agent (embedded fragment) + Ansible, one view."""
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from steward.models.ansible_inventory import AnsibleTarget
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from sqlalchemy.orm import selectinload
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async with current_app.db_sessionmaker() as db:
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host = (await db.execute(
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select(Host).where(Host.id == host_id))).scalar_one_or_none()
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if host is None:
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return "Not found", 404
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monitors = await host_svc.host_monitors(db, host_id)
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uptime = (await host_svc.compute_uptime(db)).get(host_id)
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monitor_keys = {(getattr(d["monitor"].type, "value", d["monitor"].type), d["monitor"].name)
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for d in monitors}
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alerts = [r for r in await alert_svc.active_rows(db, datetime.now(timezone.utc))
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if alert_svc.watches_host(r["rule"], host.name, monitor_keys)]
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linked_target = (await db.execute(
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select(AnsibleTarget).where(AnsibleTarget.host_id == host_id)
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.options(selectinload(AnsibleTarget.groups)))).scalar_one_or_none()
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linkable_targets = (await db.execute(
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select(AnsibleTarget).where(AnsibleTarget.host_id.is_(None))
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.order_by(AnsibleTarget.name))).scalars().all()
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from steward.models.monitors import MonitorType
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return await render_template(
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"hosts/detail.html",
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host=host, monitors=monitors, uptime=uptime, alerts=alerts,
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monitor_types=list(MonitorType),
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linked_target=linked_target, linkable_targets=linkable_targets,
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ansible_sources=_ansible_source_names(),
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)
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@hosts_bp.get("/new")
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@require_role(UserRole.operator)
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async def new_host():
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return await render_template("hosts/form.html", host=None)
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@hosts_bp.post("/")
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@require_role(UserRole.operator)
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async def create_host():
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form = await request.form
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host = Host(
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name=form["name"].strip(),
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address=form["address"].strip(),
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)
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async with current_app.db_sessionmaker() as db:
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async with db.begin():
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try:
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await host_svc.check_name_free(db, host.name)
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except ValueError as exc:
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return str(exc), 400
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db.add(host)
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await log_audit(current_app, session.get("user_id"), session.get("username", ""),
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"host.created", entity_type="host", entity_id=host.name,
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detail={"address": host.address})
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# Land on the new host's hub so monitors/agent/ansible can be set up next.
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return redirect(url_for("hosts.host_detail", host_id=host.id))
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@hosts_bp.get("/<host_id>/edit")
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@require_role(UserRole.operator)
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async def edit_host(host_id: str):
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# Pure host config (name/address/monitors). Agent, Ansible target linking,
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# and playbook runs live on the host detail page (the hub), not here.
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async with current_app.db_sessionmaker() as db:
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result = await db.execute(select(Host).where(Host.id == host_id))
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host = result.scalar_one_or_none()
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if host is None:
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return "Not found", 404
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return await render_template("hosts/form.html", host=host)
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@hosts_bp.post("/<host_id>")
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@require_role(UserRole.operator)
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async def update_host(host_id: str):
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form = await request.form
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async with current_app.db_sessionmaker() as db:
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async with db.begin():
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result = await db.execute(select(Host).where(Host.id == host_id))
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host = result.scalar_one_or_none()
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if host is None:
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return "Not found", 404
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old_name, name = host.name, form["name"].strip()
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if name != old_name:
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try:
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await host_svc.check_name_free(db, name, exclude_id=host.id)
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except ValueError as exc:
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return str(exc), 400
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host.name = name
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host.address = form["address"].strip()
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# Agent and container metrics, and the rules and windows on them,
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# go by the host's name: move them with it.
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moved = await renames.carry_rename(db, renames.HOST_SOURCES, old_name, name)
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if moved:
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await audit_request("host.renamed", "host", name,
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{"host_id": host_id, "renamed_from": old_name, "carried": moved})
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return redirect(url_for("hosts.host_detail", host_id=host_id))
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@hosts_bp.post("/<host_id>/ansible-link")
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@require_role(UserRole.operator)
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async def ansible_link(host_id: str):
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"""Link, unlink, or create an AnsibleTarget from this host."""
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from steward.models.ansible_inventory import AnsibleTarget
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form = await request.form
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action = form.get("action", "")
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async with current_app.db_sessionmaker() as db:
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async with db.begin():
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if action == "unlink":
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linked_result = await db.execute(
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select(AnsibleTarget).where(AnsibleTarget.host_id == host_id)
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)
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linked = linked_result.scalar_one_or_none()
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if linked:
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linked.host_id = None
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elif action == "link":
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target_id = form.get("target_id", "").strip()
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if target_id:
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result = await db.execute(
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select(AnsibleTarget).where(AnsibleTarget.id == target_id)
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)
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target = result.scalar_one_or_none()
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if target:
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# Clear any previous link for this host first
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old_result = await db.execute(
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select(AnsibleTarget).where(AnsibleTarget.host_id == host_id)
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)
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old = old_result.scalar_one_or_none()
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if old and old.id != target_id:
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old.host_id = None
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target.host_id = host_id
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elif action == "create":
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host_result = await db.execute(select(Host).where(Host.id == host_id))
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host = host_result.scalar_one_or_none()
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if host:
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new_target = AnsibleTarget(
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id=str(uuid.uuid4()),
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name=host.name,
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address=host.address,
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host_id=host_id,
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)
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db.add(new_target)
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return redirect(f"/hosts/{host_id}")
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@hosts_bp.post("/<host_id>/run-playbook")
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@require_role(UserRole.operator)
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async def run_playbook(host_id: str):
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"""Run an Ansible playbook against just this host (ephemeral one-host inventory)."""
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form = await request.form
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async with current_app.db_sessionmaker() as db:
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host = (await db.execute(select(Host).where(Host.id == host_id))).scalar_one_or_none()
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if host is None:
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return "Not found", 404
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source_name = (form.get("source_name", "") or "").strip()
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playbook = (form.get("playbook_path", "") or "").strip()
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if not source_name or not playbook:
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return "source and playbook are required", 400
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try:
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srcs = ansible_src.get_sources(current_app.config.get("ANSIBLE", {}))
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except Exception:
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return "Ansible sources are misconfigured", 400
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source = next((s for s in srcs if s["name"] == source_name), None)
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if source is None:
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return "Source not found", 404
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if playbook not in ansible_src.discover_playbooks(source["path"]):
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return f"Playbook '{playbook}' not found in source '{source_name}'", 404
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# Shared parser: discovered var__ fields → extra_vars_map, secret__ → secret_vars
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# (unpersisted), plus tags/check. No --limit — there's exactly one host.
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from steward.ansible.routes import _parse_run_params, _run_vars, check_run_form
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params_or_none, secret_vars, err = _parse_run_params(form)
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if err:
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return err, 400
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err = check_run_form(form, source, playbook, params_or_none, secret_vars)
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if err:
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return err, 400
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run_id = str(uuid.uuid4())
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inv_content = ansible_src.host_inventory_content(host)
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run = AnsibleRun(
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id=run_id,
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playbook_path=playbook,
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inventory_path=f"host: {host.name}",
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source_name=source_name,
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triggered_by=session.get("user_id"),
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status=AnsibleRunStatus.running,
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params=params_or_none,
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)
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async with current_app.db_sessionmaker() as db:
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async with db.begin():
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db.add(run)
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task = asyncio.create_task(
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executor.start_run(
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current_app._get_current_object(), # type: ignore[attr-defined]
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run_id, playbook, f"host: {host.name}", source["path"],
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params_or_none, inv_content, secret_vars=secret_vars,
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)
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)
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task.add_done_callback(
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lambda t: t.exception() and current_app.logger.error(
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"Host playbook run %s raised: %s", run_id, t.exception()))
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await log_audit(current_app, session.get("user_id"), session.get("username", ""),
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"ansible.host_run", entity_type="host", entity_id=host.name,
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detail={"playbook": playbook, "source": source_name, "run_id": run_id,
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"check": bool((params_or_none or {}).get("check")),
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"vars": sorted(_run_vars(params_or_none, secret_vars))})
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return redirect(url_for("ansible.run_detail", run_id=run_id))
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@hosts_bp.post("/<host_id>/delete")
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@require_role(UserRole.admin)
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async def delete_host(host_id: str):
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host_name = None
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async with current_app.db_sessionmaker() as db:
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async with db.begin():
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result = await db.execute(select(Host).where(Host.id == host_id))
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host = result.scalar_one_or_none()
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if host:
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host_name = host.name
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await db.delete(host)
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if host_name:
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await log_audit(current_app, session.get("user_id"), session.get("username", ""),
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"host.deleted", entity_type="host", entity_id=host_name)
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return redirect(url_for("hosts.list_hosts"))
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@hosts_bp.get("/uptime")
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@require_role(UserRole.viewer)
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async def uptime_page():
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async with current_app.db_sessionmaker() as db:
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result = await db.execute(select(Host).order_by(Host.name))
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uptime = await host_svc.compute_uptime(db)
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hosts = host_svc.worst_uptime_first(result.scalars().all(), uptime)
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return await render_template("hosts/uptime.html", hosts=hosts, uptime=uptime)
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