Ceph rebalancing gets stuck during disabled node removal

When disabling or removing a Ceph node during operations such as a rolling reboot, Ceph may not finish rebalancing if only two of three OSD nodes remain active. The CephDeployment object can remain in Maintenance, causing the rebalance process to wait indefinitely for Ceph to become ready. The issue may only affect environments with a small number of Ceph OSD nodes, pool replica count set to one less than the number of storage nodes (replicas=storage_nodes_count-1), and failure domain host.

To resolve the issue, run the following command on the affected Ceph OSD node:

ceph osd reweight <osdId> 0