ceph 12 version command

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1. OSD operation related

delete osd

ceph osd down <X>
ceph osd out <X>
ceph osd rm <X>
ceph auth del <osd.X>
ceph osd crush rm <osd.X>

example

ceph osd down 0
ceph osd out 0
ceph osd rm 0
ceph auth del osd.0
ceph osd crush rm osd.0

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Adjust OSD recovery level

Modify level

ceph tell osd.* injectargs '--osd-max-backfills 5'
ceph tell osd.* injectargs '--osd-recovery-max-active 5'
ceph tell osd.* injectargs '--osd-recovery-max-single-start 5'

View the values ​​of configuration items through ceph-conf

ceph-conf --show-config | egrep "osd_max_backfills|osd_recovery_max_active|osd_recovery_max_single_start"

View the value of the configuration item through osd.asok

ceph --admin-daemon /var/run/ceph/ceph-osd.<X>.asok config show  |grep -E "osd"
# 例
ceph --admin-daemon /var/run/ceph/ceph-osd.18.asok config show  |grep -E "osd"

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2. Host operation related

Delete the host without osd

ceph osd crush remove <hostname>

example

ceph osd crush remove node48

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Move the host to the corresponding bucket

ceph osd crush move <hostname> root=<bucket-name>

example

ceph osd crush move node48 root=ssd

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