we need to reduce rotation delay to 1h
cd /etc/logrotate.d/ vi fluentbit
see https://pub.nethence.com/system/ansible/playbooks/fluentbit/templates/logrotate_fluentbit
cd /etc/ cp -pi cron.daily/logrotate cron.hourly/
https://unix.stackexchange.com/questions/29574/how-can-i-set-up-logrotate-to-rotate-logs-hourly
https://stackoverflow.com/questions/25485047/hourly-rotation-of-files-using-logrotate