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Chapter 5. Deprecated functionality
This section provides an overview of functionality that has been deprecated in all minor releases up to this release of Red Hat Ceph Storage.
Ubuntu is no longer supported
Installing a Red Hat Ceph Storage 4 cluster on Ubuntu is no longer supported. Use Red Hat Enterprise Linux as the underlying operating system.
Configuring iSCSI gateway using ceph-ansible is no longer supported
Configuring the Ceph iSCSI gateway by using the ceph-ansible utility is no longer supported. Use ceph-ansible to install the gateway and then use the gwcli utility of the to configure the Ceph iSCSI gateway. For details, see the The Ceph iSCSI Gateway chapter in the Red Hat Ceph Storage Block Device Guide.
ceph-disk is deprecated
With this release, the ceph-disk utility is no longer supported. The ceph-volume utility is used instead. For details, see the Why does ceph-volume replace `ceph-disk` section in the Administration Guide for Red Hat Ceph Storage 4.
FileStore is no longer supported in production
The FileStore OSD back end is now deprecated because the new BlueStore back end is now fully supported in production. For details, see the How to migrate the object store from FileStore to BlueStore section in the Red Hat Ceph Storage Installation Guide.
Ceph configuration file is now deprecated
The Ceph configuration file (ceph.conf) is now deprecated in favor of new centralized configuration stored in Ceph Monitors. For details, see the The Ceph configuration database section in the Red Hat Ceph Storage Configuration Guide.
5.1. The Ceph Volume utility
Deploying an OSD on a device setup for dm-cache is unsupported
Deploying an OSD with dm-cache is no longer supported. Use the Bluestore backend instead of dm-cache.
For more information, see the How to migrate the object store from FileStore to BlueStore section in the Red Hat Ceph Storage Installation Guide.
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