Ceph

Links

• Homepage
• Deploy Hyper-Converged Ceph Cluster
• Operating a Ceph cluster
• Documentation
• Ceph technology

 

Elements

OSD

• Object Storage Daemon

Usually one OSD per disk

Commands

ceph

Show status

ceph status

pveceph

list pools

pveceph pool ls

Docs

• Monitoring ceph with zabbix

RDB

Rados Block Device

PG (Placement Group)

• PG Notes

FAQ

mgr: no daemons active

when running

ceph status

or similar

also shows as "no active mgr"

At least in one case solved by running on one/first node:

pveceph mgr destroy pvetest1
pveceph mgr create