bvandeusen
fed9973899
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>
60 lines
2.5 KiB
HTML
60 lines
2.5 KiB
HTML
{# host_agent history-graph widget — the host-view utilization chart, embedded
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on a dashboard. Fills the (resizable) panel; epoch-ms linear axis so no
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Chart.js date adapter is needed. #}
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{% set has_data = host and (series.cpu_pct or series.mem_used_pct or series.disk_root) %}
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{% if not host %}
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<div style="color:var(--text-muted);font-size:0.85rem;padding:0.75rem 0;">
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No host selected. <strong>Edit</strong> this dashboard and pick a host for this graph.
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</div>
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{% elif not has_data %}
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<div style="color:var(--text-muted);font-size:0.85rem;padding:0.75rem 0;">
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No agent metrics for <strong>{{ host.name }}</strong> in the last {{ hours }}h yet.
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</div>
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{% else %}
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<div style="height:100%;min-height:180px;position:relative;">
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<canvas id="host-hist-{{ wid }}"></canvas>
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</div>
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<script>
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(function () {
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var el = document.getElementById("host-hist-{{ wid }}");
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if (!el) return;
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var series = {{ series|tojson }};
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var fmtTime = function (v) {
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var d = new Date(v);
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return ("0" + d.getHours()).slice(-2) + ":" + ("0" + d.getMinutes()).slice(-2);
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};
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var ds = [
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{ key: "cpu_pct", label: "CPU %", color: "#c8a840" },
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{ key: "mem_used_pct", label: "Mem %", color: "#4aa86a" },
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{ key: "disk_root", label: "Disk / %", color: "#c87840" },
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];
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new Chart(el.getContext("2d"), {
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type: "line",
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data: { datasets: ds.map(function (d) {
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return {
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label: d.label,
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data: (series[d.key] || []).map(function (p) { return { x: p[0], y: p[1] }; }),
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borderColor: d.color, backgroundColor: d.color, borderWidth: 1.5, tension: 0.25,
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};
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}) },
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options: {
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responsive: true, maintainAspectRatio: false,
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interaction: { mode: "index", intersect: false },
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elements: { point: { radius: 0 } },
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scales: {
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x: { type: "linear", ticks: { callback: function (v) { return fmtTime(v); }, maxTicksLimit: 6, color: "#8a8a92", font: { size: 10 } }, grid: { color: "#30303a" } },
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// Auto-scale to the data (with a little headroom) so the lines fill the
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// panel instead of hugging the bottom of a fixed 0–100 axis. Axis labels
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// still show the real %, so the values stay honest.
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y: { beginAtZero: true, grace: "8%", ticks: { color: "#8a8a92", font: { size: 10 } }, grid: { color: "#30303a" } },
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},
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plugins: {
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legend: { labels: { color: "#b8b8b0", boxWidth: 10, font: { size: 11 } } },
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tooltip: { callbacks: { title: function (items) { return items.length ? fmtTime(items[0].parsed.x) : ""; } } },
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},
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},
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});
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})();
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</script>
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{% endif %}
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