openshift-fluentd-json-file.conf

<source>
  @type tail
  @label @INGRESS
  path "/var/log/containers/*.log"
  pos_file "#{ENV['DATA_DIR']}/es-containers.log.pos"
  time_format %Y-%m-%dT%H:%M:%S.%N%Z
  tag kubernetes.*
  format json
  keep_time_key true
  read_from_head true
</source>