Deployment and Prometheus Metrics

Author: MrMatAP

Makefile

@@ -43,6 +43,7 @@ helm-install: $(HELM_TARGET)
 		mrmat-python-api-fastapi \
 		${HELM_TARGET} \
 		--install \
+		--force \
 		--create-namespace \
 		--namespace mrmat-python-api-fastapi
 

requirements.txt

@@ -5,3 +5,4 @@ fastapi==0.115.11            # MIT
 sqlalchemy[asyncio]==2.0.40  # MIT
 uvicorn==0.34.0              # BSD 3-Clause
 pydantic==2.10.6             # MIT
+prometheus-fastapi-instrumentator==7.1.0    # ISC

src/mrmat_python_api_fastapi/app.py

@@ -22,6 +22,8 @@
 
 from fastapi import FastAPI
 
+from prometheus_fastapi_instrumentator import Instrumentator
+
 from mrmat_python_api_fastapi.apis.healthz import api_healthz
 from mrmat_python_api_fastapi.apis.greeting import api_greeting_v1, api_greeting_v2, api_greeting_v3
 from mrmat_python_api_fastapi.apis.platform import api_platform_v1
@@ -33,6 +35,7 @@
 app.include_router(api_greeting_v3, prefix='/api/greeting/v3', tags=['greeting'])
 app.include_router(api_platform_v1, prefix='/api/platform/v1', tags=['platform'])
 
+Instrumentator().instrument(app).expose(app)
 
 @app.get('/')
 def index():

var/container/Dockerfile

@@ -14,5 +14,5 @@ RUN chown -R 1000:1000 /home/app/.local
 
 USER app:app
 EXPOSE 8000
-#CMD ["/home/app/.local/bin/uvicorn", "--host", "0.0.0.0", "--port", "8000", "mrmat_python_api_fastapi.app:app"]
-CMD ["/home/app/.local/bin/mrmat-python-api-fastapi"]
+CMD ["/home/app/.local/bin/uvicorn", "--host", "0.0.0.0", "--port", "8000", "mrmat_python_api_fastapi.app:app"]
+#CMD ["/home/app/.local/bin/mrmat-python-api-fastapi"]

var/helm/templates/deployment.yaml

@@ -19,6 +19,11 @@ spec:
         version: {{ .Chart.AppVersion }}
         app.kubernetes.io/name: mrmat-python-api-fastapi
         app.kubernetes.io/part-of: mrmat-python-api-fastapi
+      annotations:
+        prometheus.io/scrape: "true"
+        prometheus.io/scheme: http
+        prometheus.io/port: "8000"
+        prometheus.io/path: /metrics
     spec:
       serviceAccountName: {{ .Values.serviceAccount.name }}
       containers:

var/helm/templates/httproute.yaml

@@ -13,13 +13,13 @@ spec:
   {{- range .Values.httproute.hostnames }}
   - {{ . | quote }}
   {{- end }}
-  - mrmat-python-api-fastapi.local
   parentRefs:
   {{- range .Values.httproute.parents }}
   - group: gateway.networking.k8s.io
     kind: Gateway
     name: {{ .name }}
     namespace: {{ .namespace }}
+    sectionName: mrmat-python-api-fastapi
   {{- end }}
   rules:
   - backendRefs:

var/helm/values.yaml

@@ -23,9 +23,9 @@ httproute:
   enabled: true
   name: mrmat-python-api-fastapi-httproute
   hostnames:
-  - mrmat-python-api-fastapi.local
+  - mrmat-python-api-fastapi.covenant.local
   parents:
-  - name: istio-ingress
+  - name: edge-ingress
     namespace: edge
 
 ingress: