Added cluster mode metric

metrics/pve_cluster_state_collector.go

@@ -12,8 +12,9 @@ type PveClusterStateCollector struct {
 	apiClient *proxmox.PveApiClient // PVE API client instance.
 	registry  *TTLRegistry          // TTL metrics registry.
 
-	nodes   *TTLGaugeVec // Count of nodes prometheus gauge.
-	quorate *TTLGaugeVec // Cluster quorum state prometheus gauge.
+	nodes       *TTLGaugeVec // Count of nodes prometheus gauge.
+	quorate     *TTLGaugeVec // Cluster quorum state prometheus gauge.
+	clusterMode *TTLGaugeVec // PVE cluster mode prometheus gauge.
 }
 
 // Create new instance of PVE cluster state collector.
@@ -42,6 +43,17 @@ func NewPveClusterStateCollector(apiClient *proxmox.PveApiClient, registry *TTLR
 		5*time.Minute,
 	)
 	c.registry.Register(c.quorate)
+
+	// PVE cluster mode gauge.
+	c.clusterMode = NewTTLGaugeVec(
+		prometheus.GaugeOpts{
+			Name: "pve_cluster_mode",
+			Help: "PVE cluster mode (1 = cluster, 0 = standalone node).",
+		},
+		[]string{"cluster"},
+		5*time.Minute,
+	)
+	c.registry.Register(c.clusterMode)
 	c.registry.StartCleanupLoop(5 * time.Second)
 
 	return &c
@@ -54,9 +66,10 @@ func (c *PveClusterStateCollector) CollectMetrics() error {
 		return err
 	}
 
-	l := prometheus.Labels{"cluster": cluster.Name}
+	l := prometheus.Labels{"cluster": cluster.GetClusterName()}
 	c.nodes.With(l).Set(float64(cluster.Nodes))
 	c.quorate.With(l).Set(float64(cluster.Quorate))
+	c.clusterMode.With(l).Set(cluster.GetClusterModeNumeric())
 
 	return nil
 }