Travis Nielsen
b91f4211c9
In clusters where only two datacenters (or similar failure domains) are available, a different mon and osd approach is needed to deal with the network partitions or some other reason for one of the failure domains going down. The Ceph stretched cluster makes the mons aware of the failure domains by configuring one as the arbiter in a third zone, while keeping two replicas of the data in each of the data zoens. Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
1.1 KiB
1.1 KiB
Major Themes
v1.5...
K8s Version Support
Upgrade Guides
Breaking Changes
Ceph
- Ceph mons require an odd number for a healthy quorum. An even number of mons is now disallowed.
- Update deprecated CRD apiextensions.k8s.io/v1beta1 to v1 (#6424)
- preservePoolsOnDelete is deprecated for CephFilesystem and is no longer allowed because of data-loss concerns. preserveFilesystemOnDelete acts as a replacement and preserves the filesystem when the CephFilesystem CRD is deleted (which implicitly includes all associated pools). See #6495 for more details.
Features
Ceph
- Stretch clusters for mons and OSDs to work reliably across two datacenters (Experimental mode)
- Ceph Block Pool: add mirroring support
- Ceph Block Pool: add
replicasPerFailureDomainto set the number of replica in a failure domain (#5591) - Ceph Cluster: export the storage capacity of the ceph cluster (#6475)
- Ceph Cluster: add encryption support with Key Management Service