heka/files/heka_logrotate.conf

/var/log/{{ service_name }}.log {
  # Heka cannot be told to close its log file and re-open it so we need to
  # use the copytruncate option
  copytruncate
  compress
  delaycompress
  missingok
  notifempty
  # logrotate allows to use only year, month, day and unix epoch
  dateext
  dateformat -%Y%m%d-%s
  # number of rotated files to keep
  rotate 10
  # do not rotate files unless both size and time conditions are met
  hourly
  minsize 20M
  # force rotate if filesize exceeded 100M
  maxsize 100M
  # this must map the /var/log directory group ownership
  su root syslog
}