mirror of
https://github.com/ceph/ceph
synced 2024-12-20 18:33:44 +00:00
53 lines
1.5 KiB
ReStructuredText
53 lines
1.5 KiB
ReStructuredText
Devicehealth plugin
|
|
===================
|
|
|
|
The *devicehealth* plugin includes code to manage physical devices
|
|
that back Ceph daemons (e.g., OSDs). This includes scraping health
|
|
metrics (e.g., SMART) and responding to health metrics by migrating
|
|
data away from failing devices.
|
|
|
|
Enabling
|
|
--------
|
|
|
|
The *devicehealth* module is enabled with::
|
|
|
|
ceph mgr module enable devicehealth
|
|
|
|
(It is enabled by default.)
|
|
|
|
Scraping
|
|
--------
|
|
|
|
Health metrics can be scraped from all devices with::
|
|
|
|
ceph device scrape-health-metrics
|
|
|
|
A single device can be scraped with::
|
|
|
|
ceph device scrape-health-metrics <device-id>
|
|
|
|
Or a single daemon's devices can be scraped with::
|
|
|
|
ceph device scrape-daemon-health-metrics <who>
|
|
|
|
|
|
Health monitoring
|
|
-----------------
|
|
|
|
By default, the devicehealth module wakes up periodically and checks
|
|
the health of all devices in the system. This will raise health
|
|
alerts if devices are expected to fail soon. This can be disabled by
|
|
turning off the ``mgr/devicehealth/enable_monitoring`` option.
|
|
|
|
The ``mgr/devicehealth/warn_threshold`` controls how soon an expected
|
|
device failure must be before we generate a health warning.
|
|
|
|
If the ``mgr/devicehealth/self_heal`` option is enabled (it is by
|
|
default), then for devices that are expected to fail soon the module
|
|
will automatically migrate data away from them by marking the devices
|
|
"out".
|
|
|
|
The ``mgr/devicehealth/mark_out_threshold`` controls how soon an
|
|
expected device failure must be before we automatically mark an osd
|
|
"out".
|