mirror of
https://github.com/ceph/ceph
synced 2024-12-25 04:43:17 +00:00
54 lines
2.6 KiB
ReStructuredText
54 lines
2.6 KiB
ReStructuredText
.. _ceph-iscsi:
|
||
|
||
==================
|
||
Ceph iSCSI Gateway
|
||
==================
|
||
|
||
The iSCSI Gateway presents
|
||
a Highly Available (HA) iSCSI target that exports RADOS Block Device (RBD) images
|
||
as SCSI disks. The iSCSI protocol allows clients (initiators) to send SCSI commands
|
||
to storage devices (targets) over a TCP/IP network, enabling clients without
|
||
native Ceph client support to access Ceph block storage. These include
|
||
Microsoft Windows and even BIOS.
|
||
|
||
Each iSCSI gateway exploits the Linux IO target kernel subsystem (LIO) to provide
|
||
iSCSI protocol support. LIO utilizes userspace passthrough (TCMU) to interact
|
||
with Ceph's librbd library and expose RBD images to iSCSI clients. With Ceph’s
|
||
iSCSI gateway you can provision a fully integrated block-storage
|
||
infrastructure with all the features and benefits of a conventional Storage Area
|
||
Network (SAN).
|
||
|
||
.. ditaa::
|
||
Cluster Network (optional)
|
||
+-------------------------------------------+
|
||
| | | |
|
||
+-------+ +-------+ +-------+ +-------+
|
||
| | | | | | | |
|
||
| OSD 1 | | OSD 2 | | OSD 3 | | OSD N |
|
||
| {s}| | {s}| | {s}| | {s}|
|
||
+-------+ +-------+ +-------+ +-------+
|
||
| | | |
|
||
+--------->| | +---------+ | |<---------+
|
||
: | | | RBD | | | :
|
||
| +----------------| Image |----------------+ |
|
||
| Public Network | {d} | |
|
||
| +---------+ |
|
||
| |
|
||
| +-------------------+ |
|
||
| +--------------+ | iSCSI Initiators | +--------------+ |
|
||
| | iSCSI GW | | +-----------+ | | iSCSI GW | |
|
||
+-->| RBD Module |<--+ | Various | +-->| RBD Module |<--+
|
||
| | | | Operating | | | |
|
||
+--------------+ | | Systems | | +--------------+
|
||
| +-----------+ |
|
||
+-------------------+
|
||
|
||
|
||
.. toctree::
|
||
:maxdepth: 1
|
||
|
||
Requirements <iscsi-requirements>
|
||
Configuring the iSCSI Target <iscsi-targets>
|
||
Configuring the iSCSI Initiators <iscsi-initiators>
|
||
Monitoring the iSCSI Gateways <iscsi-monitoring>
|