feat(charts): Add ability for custom positionDB for FluentBit

Author: kiblik

charts/fluent-operator/templates/fluentbit-fluentBit.yaml

@@ -22,8 +22,7 @@ spec:
 {{ toYaml .Values.fluentbit.imagePullSecrets | indent 4 }}
   {{- end }}
   positionDB:
-    hostPath:
-      path: /var/lib/fluent-bit/
+{{- toYaml .Values.fluentbit.positionDB | nindent 4 }}
   resources:
 {{- toYaml .Values.fluentbit.resources | nindent 4  }}
   fluentBitConfigName: fluent-bit-config

charts/fluent-operator/values.yaml

@@ -120,6 +120,12 @@ fluentbit:
   # Specify additional custom annotations for fluentbit-serviceaccount
   serviceAccountAnnotations: {}
 
+  # Specify storage for position db. You will use it if tail input is enabled.
+  ## Ref: https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.31/#volumesource-v1-core
+  positionDB:
+    hostPath:
+      path: /var/lib/fluent-bit/
+
   ## Reference to one or more secrets to be used when pulling images
   ## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
   ##