Metrics (#28)

* add prometheus operator

* Autodeploy internal sservicemonitor

* add readme for prom metrics

* change port name to api

Co-authored-by: Dmitry Skokov <d.skokov@rbkmoney.com>

README.md

@@ -140,3 +140,12 @@ kubectl port-forward vault-0 8200:8200 &
         vault.hashicorp.com/role: "db-app"
 ```
 После этого в поде с сервисом будет лежать файл `/vault/secrets/db-creds` со строкой подключения к БД
+
+Как включить сбор метрик
+----------
+
+requrements:
+  - Service c именем порта api, на котором слушает http порт приложения
+  - label
+  ```          prometheusmetrics.enabled: "true" ```
+  - Метрики приложения в формате prometheus должны отдаваться на локейшене /metrics

config/prometheus/values.yaml

@@ -0,0 +1,12 @@
+# Look for reference at https://github.com/helm/charts/blob/master/stable/prometheus-operator/values.yaml#L1975
+prometheus:
+  additionalServiceMonitors:
+    - name: "rbk-intservice"
+      selector: 
+        matchLabels:
+          prometheusmetrics.enabled: "true"
+
+      endpoints:
+        - port: "api"
+          path: /metrics
+          scheme: http

helmfile.lock

@@ -6,11 +6,14 @@ dependencies:
 - name: kafka
   repository: https://kubernetes-charts-incubator.storage.googleapis.com
   version: 0.21.2
+- name: prometheus-operator
+  repository: https://kubernetes-charts.storage.googleapis.com
+  version: 9.3.1
 - name: vault
   repository: https://helm.releases.hashicorp.com
   version: 0.7.0
 - name: zookeeper
   repository: https://kubernetes-charts-incubator.storage.googleapis.com
   version: 2.1.3
-digest: sha256:65f2c87582a6fee57134df871d6fc07d860248fa99a6c86473195e283089cb00
-generated: "2020-08-26T14:22:40.087884+03:00"
+digest: sha256:adf3d2d7db5150fa436914ba61d2183ae84b260b6195cdf97af68748bcff9923
+generated: "2020-09-04T11:17:29.545997+03:00"

helmfile.yaml

@@ -185,3 +185,8 @@ releases:
     file: config/api-common/keys/token-encryption-keys/1.jwk
   - name: wapiPrivkey
     file: config/api-common/keys/capi.privkey.pem
+- name: prometheus
+  <<: *default
+  chart: stable/prometheus-operator
+  namespace: monitoring
+  createNamespace: true