drozdziak1/pyth attester prometheus metrics (#396)

* Add prometheus to Tilt with attester metrics

* Dockerfile.prometheus: re-add after faulty merge

* p2w-attest: Clarify port number, remove subpage config

* p2w-attest/util.rs: fix warnings

* p2w-attest: typo

Author: Stanisław Drozd

Dockerfile.prometheus

@@ -0,0 +1,3 @@
+FROM prom/prometheus
+
+ADD --chown=nobody:nobody ./prometheus_config.yaml .

Tiltfile

@@ -198,7 +198,7 @@ k8s_yaml_with_ns("devnet/p2w-attest.yaml")
 k8s_resource(
     "p2w-attest",
     resource_deps = ["solana-devnet", "pyth", "guardian"],
-    port_forwards = [],
+    port_forwards = [port_forward(3000, name = "metrics", host = webHost)],
     labels = ["pyth"],
     trigger_mode = trigger_mode,
 )
@@ -320,3 +320,18 @@ k8s_resource(
     labels = ["terra"],
     trigger_mode = trigger_mode,
 )
+
+docker_build(
+    ref = "prometheus",
+    context = ".",
+    dockerfile = "Dockerfile.prometheus",
+)
+
+k8s_yaml_with_ns("devnet/prometheus.yaml")
+
+k8s_resource(
+    "prometheus",
+    port_forwards = [port_forward(9090, name = "Prometheus dashboard", host = webHost)],
+    labels = ["prometheus"],
+    trigger_mode = trigger_mode,
+)

devnet/p2w-attest.yaml

@@ -10,6 +10,8 @@ spec:
     - port: 4343
       name: p2w-attest
       protocol: TCP
+    - port: 3000
+      name: metrics
   clusterIP: None
   selector:
     app: p2w-attest
@@ -52,3 +54,6 @@ spec:
             - containerPort: 4343
               name: p2w-attest
               protocol: TCP
+            - containerPort: 3000
+              name: metrics
+              protocol: TCP

devnet/prometheus.yaml

@@ -0,0 +1,48 @@
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: prometheus
+  labels:
+    app: prometheus
+spec:
+  clusterIP: None
+  selector:
+    app: prometheus
+  ports:
+    - port: 9090
+      name: dashboard
+      protocol: TCP
+---
+apiVersion: apps/v1
+kind: StatefulSet
+metadata:
+  name: prometheus
+spec:
+  selector:
+    matchLabels:
+      app: prometheus
+  serviceName: prometheus
+  template:
+    metadata:
+      labels:
+        app: prometheus
+    spec:
+      restartPolicy: Always
+      terminationGracePeriodSeconds: 0
+      containers:
+        - name: prometheus
+          image: prometheus
+          readinessProbe:
+            tcpSocket:
+              port: 9090
+            periodSeconds: 1
+            failureThreshold: 300
+          ports:
+            - containerPort: 9090
+              name: dashboard
+              protocol: TCP
+          command:
+            - "prometheus"
+            - "--config.file=prometheus_config.yaml"
+            - "--web.external-url=http://[::]:9090"

prometheus_config.yaml

@@ -0,0 +1,5 @@
+scrape_configs:
+  - job_name: p2w_attest
+    scrape_interval: 5s
+    static_configs:
+      - targets: ["p2w-attest:3000"]