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+---
+title: Monitoring with Prometheus
+menu_order: 105
+---
+
+Two endpoints are exposed: one for the Weave Net router, and, when deployed as
+a [Kubernetes Addon](/site/kube-addon.md), one for the [network policy
+controller](/site/kube-addon.md#npc).
+
+### Router Metrics
+
+The endpoint address is `localhost:6782`; the following metrics are
+exposed:
+
+* `weave_connections` - Number of peer-to-peer connections.
+* `weave_connection_terminations_total` - Number of peer-to-peer
+  connections terminated.
+* `weave_ips` - Number of IP addresses.
+* `weave_max_ips` - Size of IP address space used by allocator.
+* `weave_dns_entries` - Number of DNS entries.
+* `weave_flows` - Number of FastDP flows.
+
+### Kubernetes Network Policy Controller Metrics
+
+The endpoint address is `localhost:6781`; the following metric is
+exposed:
+
+* `weavenpc_blocked_connections_total` - Connection attempts blocked
+  by policy controller.
+
+# Static Configuration for Weave Net
+
+The following YAML fragment can be used in your Prometheus configuration to
+scrape the router metrics endpoint:
+
+```
+scrape_configs:
+- job_name: 'weave'
+  scrape_interval: 15s
+  static_configs:
+  - targets: ['localhost:6782']
+```
+
+# Discovery Configuration for Kubernetes
+
+If you're running Weave in conjunction with Kubernetes, it is possible
+to discover the endpoints for all nodes automatically. The following
+Kubernetes config will install and configure Prometheus 1.3 on your
+cluster and configure it to discover and scrape the Weave endpoints:
+
+```
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: prometheus
+data:
+  prometheus.yml: |-
+    global:
+      scrape_interval: 15s
+    scrape_configs:
+    - job_name: 'weave'
+      kubernetes_sd_configs:
+      - api_server:
+        role: pod
+      relabel_configs:
+      - source_labels: [__meta_kubernetes_namespace,__meta_kubernetes_pod_label_name]
+        action: keep
+        regex: ^kube-system;weave-net$
+      - source_labels: [__meta_kubernetes_pod_container_name,__address__]
+        action: replace
+        target_label: __address__
+        regex: ^weave;(.+?)(?::\d+)?$
+        replacement: $1:6782
+      - source_labels: [__meta_kubernetes_pod_container_name,__address__]
+        action: replace
+        target_label: __address__
+        regex: ^weave-npc;(.+?)(?::\d+)?$
+        replacement: $1:6781
+      - source_labels: [__meta_kubernetes_pod_container_name]
+        action: replace
+        target_label: job
+---
+apiVersion: v1
+kind: Service
+metadata:
+  labels:
+    name: prometheus
+  name: prometheus
+spec:
+  selector:
+    app: prometheus
+  type: NodePort
+  ports:
+  - name: prometheus
+    protocol: TCP
+    port: 9090
+    nodePort: 30900
+---
+apiVersion: extensions/v1beta1
+kind: Deployment
+metadata:
+  name: prometheus
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: prometheus
+  template:
+    metadata:
+      name: prometheus
+      labels:
+        app: prometheus
+    spec:
+      containers:
+      - name: prometheus
+        image: prom/prometheus:v1.3.0
+        args:
+          - '-config.file=/etc/prometheus/prometheus.yml'
+        ports:
+        - name: web
+          containerPort: 9090
+        volumeMounts:
+        - name: config-volume
+          mountPath: /etc/prometheus
+      volumes:
+      - name: config-volume
+        configMap:
+          name: prometheus
+```
+
+# Weave Cloud Integration
+
+Finally, you can configure your local Prometheus instance to push
+metrics to Weave Cloud by including the following fragment in the
+`prometheus.yml` above (after replacing `<WEAVE_CLOUD_TOKEN>` with
+your own token):
+
+```
+remote_write:
+  url: http://frontend.dev.weave.works/api/prom/push
+  basic_auth:
+    password: <WEAVE_CLOUD_TOKEN>
+```
+
+For information on getting started with Weave Cloud metrics, including
+on how to obtain your Weave Cloud token, please go
+[here](https://github.com/weaveworks/cortex).