Add OTEL sidecar injector annotation together with ENV from CM

- ConfigMap created by OTEL chart and contains global tracing configuration, Sidecar will be injected by OTEL operator.
- Add metrics port to k8s manifest. Metrics exposed but not yet configured

.helm/templates/_helpers.tpl

@@ -80,6 +80,6 @@ Create the name of the service account to use
   value: "true"
 - name: CONFIG_PATH
   value: "/"
-- name: HTTPHANDLER_PORT
+- name: HTTP_PORT
   value: "8080"
 {{- end -}}

.helm/templates/deployment-api.yaml

@@ -12,6 +12,8 @@ spec:
       role: api
   template:
     metadata:
+      annotations:
+        sidecar.opentelemetry.io/inject: "true"
       labels:
         {{- include "jiraclick.selectorLabels" . | nindent 8 }}
         role: api
@@ -36,10 +38,18 @@ spec:
             {{ include "jiraclick.common_env" . | nindent 12 }}
             - name: HTTPHANDLER_PORT
               value: "8080"
+            - name: METRICS_PORT
+              value: "9090"
+          envFrom:
+            - configMapRef:
+                name: opentelemetry-config
           ports:
             - name: http-handler
               containerPort: 8080
               protocol: TCP
+            - name: http-metrics
+              containerPort: 9090
+              protocol: TCP
           livenessProbe:
             httpGet:
               path: /health-check

.helm/templates/deployment-worker.yaml

@@ -12,6 +12,8 @@ spec:
       role: worker
   template:
     metadata:
+      annotations:
+        sidecar.opentelemetry.io/inject: "true"
       labels:
         {{- include "jiraclick.selectorLabels" . | nindent 8 }}
         role: worker
@@ -34,6 +36,15 @@ spec:
             - worker
           env:
             {{ include "jiraclick.common_env" . | nindent 12 }}
+            - name: METRICS_PORT
+              value: "9090"
+          envFrom:
+            - configMapRef:
+                name: opentelemetry-config
+          ports:
+            - name: http-metrics
+              containerPort: 9090
+              protocol: TCP
           resources:
             {{- toYaml .Values.resources | nindent 12 }}
       {{- with .Values.nodeSelector }}

.helm/templates/service.yaml

@@ -11,6 +11,10 @@ spec:
       targetPort: http-handler
       protocol: TCP
       name: http-handler
+    - port: 9090
+      targetPort: http-metrics
+      protocol: TCP
+      name: http-metrics
   selector:
     {{- include "jiraclick.selectorLabels" . | nindent 4 }}
     role: api