projects / ceph.git / blame
| Commit | Line | Data |
|---|---|---|
| 181888fb FG |
1 | ================== |
| 2 | Ceph iSCSI Gateway | |
| 3 | ================== | |
| 4 | ||
| 5 | The iSCSI gateway is integrating Ceph Storage with the iSCSI standard to provide | |
| 6 | a Highly Available (HA) iSCSI target that exports RADOS Block Device (RBD) images | |
| 7 | as SCSI disks. The iSCSI protocol allows clients (initiators) to send SCSI commands | |
| 8 | to SCSI storage devices (targets) over a TCP/IP network. This allows for heterogeneous | |
| 9 | clients, such as Microsoft Windows, to access the Ceph Storage cluster. | |
| 10 | ||
| 11 | Each iSCSI gateway runs the Linux IO target kernel subsystem (LIO) to provide the | |
| 12 | iSCSI protocol support. LIO utilizes a userspace passthrough (TCMU) to interact | |
| 13 | with Ceph's librbd library and expose RBD images to iSCSI clients. With Ceph’s | |
| 14 | iSCSI gateway you can effectively run a fully integrated block-storage | |
| 15 | infrastructure with all the features and benefits of a conventional Storage Area | |
| 16 | Network (SAN). | |
| 17 | ||
| 18 | .. ditaa:: | |
| 19 | Cluster Network | |
| 20 | +-------------------------------------------+ | |
| 21 | | | | | | |
| 22 | +-------+ +-------+ +-------+ +-------+ | |
| 23 | | | | | | | | | | |
| 24 | | OSD 1 | | OSD 2 | | OSD 3 | | OSD N | | |
| 25 | | {s}| | {s}| | {s}| | {s}| | |
| 26 | +-------+ +-------+ +-------+ +-------+ | |
| 27 | | | | | | |
| 28 | +--------->| | +---------+ | |<---------+ | |
| 29 | : | | | RBD | | | : | |
| 30 | | +----------------| Image |----------------+ | | |
| 31 | | Public Network | {d} | | | |
| 32 | | +---------+ | | |
| 33 | | | | |
| 34 | | +-------------------+ | | |
| 35 | | +--------------+ | iSCSI Initators | +--------------+ | | |
| 36 | | | iSCSI GW | | +-----------+ | | iSCSI GW | | | |
| 37 | +-->| RBD Module |<--+ | Various | +-->| RBD Module |<--+ | |
| 38 | | | | | Operating | | | | | |
| 39 | +--------------+ | | Systems | | +--------------+ | |
| 40 | | +-----------+ | | |
| 41 | +-------------------+ | |
| 42 | ||
| 43 | ||
| 44 | .. toctree:: | |
| 45 | :maxdepth: 1 | |
| 46 | ||
| 47 | Requirements <iscsi-requirements> | |
| 48 | Configuring the iSCSI Target <iscsi-targets> | |
| b32b8144 | 49 | Configuring the iSCSI Initiators <iscsi-initiators> |
| 181888fb | 50 | Monitoring the iSCSI Gateways <iscsi-monitoring> |