添加更详细的信息查询

server/index.js

@@ -601,6 +601,31 @@ app.get('/api/metrics/cpu-history', async (req, res) => {
   }
 });
 
+// Get detailed metrics for a specific server
+app.get('/api/metrics/server-details', async (req, res) => {
+  const { instance, job, source } = req.query;
+  
+  if (!instance || !job || !source) {
+    return res.status(400).json({ error: 'instance, job, and source name are required' });
+  }
+
+  try {
+    // Find the source URL by name
+    const [rows] = await db.query('SELECT url FROM prometheus_sources WHERE name = ?', [source]);
+    if (rows.length === 0) {
+      return res.status(404).json({ error: 'Prometheus source not found' });
+    }
+    const sourceUrl = rows[0].url;
+
+    // Fetch detailed metrics
+    const details = await prometheusService.getServerDetails(sourceUrl, instance, job);
+    res.json(details);
+  } catch (err) {
+    console.error(`Error fetching server details for ${instance}:`, err.message);
+    res.status(500).json({ error: 'Failed to fetch server details' });
+  }
+});
+
 // SPA fallback
 app.get('*', (req, res, next) => {
   if (req.path.startsWith('/api/') || req.path.includes('.')) return next();

server/prometheus-service.js

@@ -412,6 +412,42 @@ function mergeCpuHistories(histories) {
 }
 
 
+/**
+ * Get detailed metrics for a specific server (node)
+ */
+async function getServerDetails(baseUrl, instance, job) {
+  const url = normalizeUrl(baseUrl);
+  const node = instance;
+  
+  // Queries based on the requested dashboard structure
+  const queries = {
+    cpuBusy: `100 * (1 - avg(rate(node_cpu_seconds_total{mode="idle", instance="${node}"}[1m])))`,
+    sysLoad: `node_load1{instance="${node}",job="${job}"} * 100 / count(count(node_cpu_seconds_total{instance="${node}",job="${job}"}) by (cpu))`,
+    memUsedPct: `(1 - (node_memory_MemAvailable_bytes{instance="${node}", job="${job}"} / node_memory_MemTotal_bytes{instance="${node}", job="${job}"})) * 100`,
+    swapUsedPct: `((node_memory_SwapTotal_bytes{instance="${node}",job="${job}"} - node_memory_SwapFree_bytes{instance="${node}",job="${job}"}) / (node_memory_SwapTotal_bytes{instance="${node}",job="${job}"})) * 100`,
+    rootFsUsedPct: `100 - ((node_filesystem_avail_bytes{instance="${node}",job="${job}",mountpoint="/",fstype!="rootfs"} * 100) / node_filesystem_size_bytes{instance="${node}",job="${job}",mountpoint="/",fstype!="rootfs"})`,
+    cpuCores: `count(count(node_cpu_seconds_total{instance="${node}",job="${job}"}) by (cpu))`,
+    memTotal: `node_memory_MemTotal_bytes{instance="${node}",job="${job}"}`,
+    uptime: `node_time_seconds{instance="${node}",job="${job}"} - node_boot_time_seconds{instance="${node}",job="${job}"}`,
+    netRx: `sum(rate(node_network_receive_bytes_total{instance="${node}",job="${job}",device!~'tap.*|veth.*|br.*|docker.*|virbr*|podman.*|lo.*|vmbr.*|fwbr.|ip.*|gre.*|virbr.*|vnet.*'}[1m]))`,
+    netTx: `sum(rate(node_network_transmit_bytes_total{instance="${node}",job="${job}",device!~'tap.*|veth.*|br.*|docker.*|virbr*|podman.*|lo.*|vmbr.*|fwbr.|ip.*|gre.*|virbr.*|vnet.*'}[1m]))`
+  };
+
+  const results = {};
+  const queryPromises = Object.entries(queries).map(async ([key, expr]) => {
+    try {
+      const res = await query(url, expr);
+      results[key] = res.length > 0 ? parseFloat(res[0].value[1]) : 0;
+    } catch (e) {
+      console.error(`[Prometheus] Error querying ${key} for ${node}:`, e.message);
+      results[key] = 0;
+    }
+  });
+
+  await Promise.all(queryPromises);
+  return results;
+}
+
 module.exports = {
   testConnection,
   query,
@@ -420,5 +456,6 @@ module.exports = {
   getNetworkHistory,
   mergeNetworkHistories,
   getCpuHistory,
-  mergeCpuHistories
+  mergeCpuHistories,
+  getServerDetails
 };