<filter mux kubernetes.var.log.containers.mux-mux.mux-mux_**.mux>
  # remove any fields added by previous steps
  @type record_transformer
  # docker and k8s fields are added by k8s meta plugin when we look up
  # the namespace_id - we don't need these any more after the viaq filter
  # runs to add the viaq_index_name field
  remove_keys docker,kubernetes,CONTAINER_NAME,CONTAINER_ID_FULL,mux_namespace_name,mux_need_k8s_meta,namespace_name,namespace_uuid
</filter>
