ceph 状态 health: HEALTH_WARN no active mgr

admin

health: HEALTH_WARN
health: HEALTH_WARN
            no active mgr

% @3 M" _( G- L/ h解决：Ceph Manager Daemon，简称ceph-mgr。 该组件的主要作用是分担和扩展monitor的部分功能，减轻monitor的负担，让更好地管理ceph存储系统ceph

* Z/ W, H+ Z3 pceph在 luminous中新加入了mgr功能模块，手动安装mgr即可
  a/ I  z" A0 G
6 k" d# U, ?6 `: Q: v; _) b8 lceph-deploy  mgr  create  ceph1  ceph2 ceph3

. [0 w' ~/ X1 T+ Q0 q5 ]/ b! |+ \

admin

crush rule 常用命令记录
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- a  E5 `" a. y+ D3 Y* q
& N" U, k9 G% E' i. |8 C4 t' Iceph osd getcrushmap -o /tmp/crush
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$ p) u. Z- V1 Z  v) y
crushtool -d /tmp/crush -o /tmp/crush.txt
crushtool -c /tmp/crush.txt -o /tmp/crush.bin
9 T' B; x6 Y  i  `$ D/ gceph osd setcrushmap -i /tmp/crush.bin

admin

ceph -s
4 e( E/ v$ o# }/ p$ g/ u6 @9 Lceph -s
  cluster:
    id:     04f83ed1-096e-41c9-a214-5a1fa4724bc3
    health: HEALTH_OK
% _- i1 x  {% b7 ?- _# g% I
  services:
% v1 t0 _% [% _9 P8 p: {    mon: 3 daemons, quorum ceph1,ceph2,ceph3
3 d5 [, U5 _8 X! B  r& f; S    mgr: ceph1(active), standbys: ceph2, ceph3
  N+ `% J( M3 k* z) g3 ]    osd: 3 osds: 3 up, 3 in
* ]2 \9 q' W7 \
  data:
! L5 x  p! e* S5 a6 E, x    pools:   0 pools, 0 pgs
7 W8 s- c5 O; z0 _1 x0 U+ K    objects: 0  objects, 0 B
% K7 t, E7 T' w+ C    usage:   3.0 GiB used, 297 GiB / 300 GiB avail
    pgs: