Added support for fluentd bufferChunkKeys in logging-pod (fixes #765) (#802)

* Added support for fluentd bufferChunkKeys in logging-pod and set index as default bufferChunkKey

Author: mmeyer21

helm-chart/splunk-connect-for-kubernetes/charts/splunk-kubernetes-logging/templates/configMap.yaml

@@ -466,7 +466,7 @@ data:
         app_name {{ .Chart.Name }}
         app_version {{ .Chart.Version }}
         {{- with .Values.buffer }}
-        <buffer>
+        <buffer {{ join "," $.Values.bufferChunkKeys }}>
         {{- range $parameter, $value := . }}
           {{ $parameter }} {{ $value }}
         {{- end }}

helm-chart/splunk-connect-for-kubernetes/charts/splunk-kubernetes-logging/values.yaml

@@ -365,6 +365,8 @@ resources:
   # All buffer parameters (except Argument) defined in
   # https://docs.fluentd.org/v1.0/articles/buffer-section#parameters
   # can be configured here.
+bufferChunkKeys:
+  - index
 buffer:
   "@type": memory
   total_limit_size: 600m

helm-chart/splunk-connect-for-kubernetes/values.yaml

@@ -444,6 +444,8 @@ splunk-kubernetes-logging:
   # All buffer parameters (except Argument) defined in
   # https://docs.fluentd.org/v1.0/articles/buffer-section#parameters
   # can be configured here.
+  bufferChunkKeys:
+  - index
   buffer:
     "@type": memory
     total_limit_size: 600m