Ceph - MON_DISK_BIG warning on Red Hat Ceph Storage

Issue

• The following warning is seen when running ceph health detail:

[cephadm@ceph-003 /]$ sudo ceph health detail
HEALTH_WARN mons ceph-001,ceph-002,ceph-003 are using a lot of disk space
MON_DISK_BIG mons ceph-001,ceph-002,ceph-003 are using a lot of disk space
    mon.ceph-001 is 19.5GiB >= mon_data_size_warn (15GiB)
    mon.ceph-002 is 19.5GiB >= mon_data_size_warn (15GiB)
    mon.ceph-003 is 19.5GiB >= mon_data_size_warn (15GiB)