mirror of
https://github.com/ceph/ceph
synced 2024-12-27 22:13:28 +00:00
52 lines
1.5 KiB
ReStructuredText
52 lines
1.5 KiB
ReStructuredText
==========================
|
|
iSCSI Gateway Requirements
|
|
==========================
|
|
|
|
It is recommended to provision two to four iSCSI gateway nodes to
|
|
realize a highly available Ceph iSCSI gateway solution.
|
|
|
|
For hardware recommendations, see :ref:`hardware-recommendations` .
|
|
|
|
.. note::
|
|
On iSCSI gateway nodes the memory footprint is a function of
|
|
of the RBD images mapped and can grow to be large. Plan memory
|
|
requirements accordingly based on the number RBD images to be mapped.
|
|
|
|
There are no specific iSCSI gateway options for the Ceph Monitors or
|
|
OSDs, but it is important to lower the default heartbeat interval for
|
|
detecting down OSDs to reduce the possibility of initiator timeouts.
|
|
The following configuration options are suggested::
|
|
|
|
[osd]
|
|
osd heartbeat grace = 20
|
|
osd heartbeat interval = 5
|
|
|
|
- Updating Running State From a Ceph Monitor Node
|
|
|
|
::
|
|
|
|
ceph tell <daemon_type>.<id> config set <parameter_name> <new_value>
|
|
|
|
::
|
|
|
|
ceph tell osd.* config set osd_heartbeat_grace 20
|
|
ceph tell osd.* config set osd_heartbeat_interval 5
|
|
|
|
- Updating Running State On Each OSD Node
|
|
|
|
::
|
|
|
|
ceph daemon <daemon_type>.<id> config set osd_client_watch_timeout 15
|
|
|
|
::
|
|
|
|
ceph daemon osd.0 config set osd_heartbeat_grace 20
|
|
ceph daemon osd.0 config set osd_heartbeat_interval 5
|
|
|
|
For more details on setting Ceph's configuration options, see
|
|
:ref:`configuring-ceph`. Be sure to persist these settings in
|
|
``/etc/ceph.conf`` or, on Mimic and later releases, in the
|
|
centralized config store.
|
|
|
|
|