Storage pool type: rbd
Ceph is a distributed object store and file system designed to provide excellent performance, reliability and scalability. RADOS block devices implement a feature rich block level storage, and you get the following advantages:
thin provisioning
resizable volumes
distributed and redundant (striped over multiple OSDs)
full snapshot and clone capabilities
self healing
no single point of failure
scalable to the exabyte level
kernel and user space implementation available
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For smaller deployments, it is also possible to run Ceph services directly on your Proxmox VE nodes. Recent hardware has plenty of CPU power and RAM, so running storage services and VMs on same node is possible. |
This backend supports the common storage properties nodes, disable, content, and the following rbd specific properties:
List of monitor daemon IPs. Optional, only needed if Ceph is not running on the PVE cluster.
Ceph pool name.
RBD user Id. Optional, only needed if Ceph is not running on the PVE cluster.
Enforce access to rados block devices through the krbd kernel module. Optional.
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Containers will use krbd independent of the option value. |
rbd: ceph-external monhost 10.1.1.20 10.1.1.21 10.1.1.22 pool ceph-external content images username admin
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You can use the rbd utility to do low-level management tasks. |
If you use cephx authentication, you need to copy the keyfile from your external Ceph cluster to a Proxmox VE host.
Create the directory /etc/pve/priv/ceph with
mkdir /etc/pve/priv/ceph
Then copy the keyring
scp <cephserver>:/etc/ceph/ceph.client.admin.keyring /etc/pve/priv/ceph/<STORAGE_ID>.keyring
The keyring must be named to match your <STORAGE_ID>. Copying the keyring generally requires root privileges.
If Ceph is installed locally on the PVE cluster, this is done automatically by pveceph or in the GUI.
The rbd backend is a block level storage, and implements full snapshot and clone functionality.
Content types | Image formats | Shared | Snapshots | Clones |
---|---|---|---|---|
images rootdir |
raw |
yes |
yes |
yes |