monitor program
https://www.dropbox.com/sh/h52d097gq9h8ed8/AAD0b1jUrVHrdAWw3fpy8CKca?dl=0
https://www.icinga.com/products/demo/ [can monitor hw]
http://ganglia.info/?page_id=69
https://slurm.schedmd.com/overview.html [monitor job]
https://croit.io/?gclid=CjwKEAjwub7NBRDJ64nX0LTbhV4SJAD-8JU_lYFyWUWNwtbCKfN4ZlDQmC3kCw37TqYFpm1gXwlT6RoCaFrw_wcB
https://docslide.us/technology/ceph-day-beijing-cetune-a-framework-of-profile-and-tune-ceph-performance.html
http://accelazh.github.io/ceph/Ceph-Performance-Tuning-Checklist