feat: add otelcollector as sidecar for firehose

Author: prakharmathur82

stable/firehose/Chart.yaml

@@ -2,5 +2,5 @@ apiVersion: v2
 name: firehose
 description: A Helm chart for deploying Firehose on Kubernetes
 type: application
-version: 0.1.3
-appVersion: 0.7.1
+version: 0.1.4
+appVersion: 0.8.1

stable/firehose/README.md

@@ -93,7 +93,15 @@ The following table lists the configurable parameters of Firehose chart and thei
 | telegraf.resources.limits.memory                 | string | `"64Mi"`                                                                                                                                                                                                                                                                                                                                                                                             | telegraf container memory limit                                                                                                                |
 | telegraf.resources.requests.cpu                  | string | `"50m"`                                                                                                                                                                                                                                                                                                                                                                                              | telegraf container cpu requests                                                                                                                |
 | telegraf.resources.requests.memory               | string | `"64Mi"`                                                                                                                                                                                                                                                                                                                                                                                             | telegraf container memory requests                                                                                                             |
-
+| otelcollector.enabled                                 | bool   | `false`                                                                                                                                                                                                                                                                                                                                                                                              | flag for enabling otelcollector                                                                                                                     |
+| otelcollector.image.pullPolicy                        | string | `"IfNotPresent"`                                                                                                                                                                                                                                                                                                                                                                                     | the Kubernetes [imagePullPolicy](https://kubernetes.io/docs/concepts/containers/images/#updating-images) value for otelcollector container          |
+| otelcollector.image.repository                        | string | `"otel/opentelemetry-collector-contrib"`                                                                                                                                                                                                                                                                                                                                                                                         | docker repository to download otelcollector image                                                                                                   |
+| otelcollector.image.tag                               | string | `"0.108.0"`                                                                                                                                                                                                                                                                                                                                                                                     | otelcollector docker image tag                                                                                                                      |
+| otelcollector.resources.limits.cpu                    | string | `"50m"`                                                                                                                                                                                                                                                                                                                                                                                              | otelcollector container cpu limit                                                                                                                   |
+| otelcollector.resources.limits.memory                 | string | `"64Mi"`                                                                                                                                                                                                                                                                                                                                                                                             | otelcollector container memory limit                                                                                                                |
+| otelcollector.resources.requests.cpu                  | string | `"50m"`                                                                                                                                                                                                                                                                                                                                                                                              | otelcollector container cpu requests                                                                                                                |
+| otelcollector.resources.requests.memory               | string | `"64Mi"`                                                                                                                                                                                                                                                                                                                                                                                             | otelcollector container memory requests                                                                                                             |
+| otelcollector.config               | object | ``                                                                                                                                                                                                                                                                                                                                                                                             | otelcollector configurations
 ---
 
 Specify each parameter using the `--set key=value[,key=value]` argument to `helm install`.

stable/firehose/templates/configmap-otelcollector.yaml

@@ -0,0 +1,14 @@
+{{- if index .Values.telegraf.enabled }}
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: {{ include "firehose.fullname" . }}-otelcollector-config
+  namespace: {{ .Release.Namespace }}
+  labels:
+    labels: {{- range $key, $value := .Values.labels }}
+    {{ $key }}: {{ $value }}
+    {{- end }}
+data:
+  otel-collector-config.yaml: |
+    {{ toYaml .Values.otelcollector.config | indent 4 }}
+{{- end }}

stable/firehose/templates/deployment.yaml

@@ -58,6 +58,16 @@ spec:
         - mountPath: /etc/telegraf
           name: telegraf-conf
       {{- end }}
+      {{- if index .Values.otelcollector.enabled }}
+      - name: otelcollector
+        image: "{{ .Values.otelcollector.image.repository }}:{{ .Values.otelcollector.image.tag }}"
+        imagePullPolicy: {{ .Values.otelcollector.image.pullPolicy }}
+        resources:
+          {{- toYaml .Values.otelcollector.resources | nindent 12 }}
+        volumeMounts:
+        - mountPath: /etc/otelcollector
+          name: otelcollector-conf
+      {{- end }}
       {{- if index .Values "init-firehose" "enabled" }}
       initContainers:
       - args:
@@ -81,6 +91,11 @@ spec:
           name: {{ include "firehose.fullname" . }}-telegraf-config
         name: telegraf-conf
       {{- end }}
+      {{- if index .Values.otelcollector.enabled }}
+      - configMap:
+          name: {{ include "firehose.fullname" . }}-otelcollector-config
+        name: otelcollector-conf
+      {{- end }}
       {{- if index .Values "init-firehose" "enabled" }}
       - emptyDir: {}
         name: workdir

stable/firehose/values.yaml

@@ -76,3 +76,6 @@ telegraf:
     requests:
       cpu: 50m
       memory: 64Mi
+
+otelcollector:
+  enabled: false