ceph config help mon_max_pg_per_osd查看默认值

admin

[root@compute01 ~]# ceph config help mon_max_pg_per_osd
mon_max_pg_per_osd - Max number of PGs per OSD the cluster will allow
  (uint, advanced)
  Default: 250
  Minimum: 1
  Maximum:
  Can update at runtime: true
9 H& X" ]$ u" y9 {' x; ]6 |; F. p0 T: ]  Services: [mgr]
3 V+ `( I# ?- p8 d4 H* xIf the number of PGs per OSD exceeds this, a health warning will be visible in `ceph status`.  This is also used in automated PG management, as the threshold at which some pools' pg_num may be shrunk in order to enable increasing the pg_num of others.
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! N' E& X8 ?6 E) r+ N查看ceph的mon_max_pg_per_osd默认值：
6 R1 @* b) @" K* l  ]" iceph daemon mgr.`hostname -s` config get mon_max_pg_per_osd
{
    "mon_max_pg_per_osd": "1000"
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! |* ~- Q" w* W' C  \$ {3 |! }在线实时调整配置参数(重启后失效)

```
% P4 H  d' F& k, G" C2 L6 Z[root@ceph ~]# ceph daemon mgr.ceph1 config set mon_max_pg_per_osd 300
{
8 C. R& Y7 n% g4 [    "success": "mon_max_pg_per_osd = '300' (not observed, change may require restart) "
}
```
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启动保存配置
9 f) s8 f7 C! u需要在/etc/ceph/ceph.conf加上以下内容
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```
. b$ p; n  Q9 r, I& T! }[mgr.ceph]
mon_max_pg_per_osd = 300
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admin

查看ceph mon_max_pg_per_osd  最大连接数
ceph daemon mgr.`hostname -s` config get mon_max_pg_per_osd
{
: P3 \) E7 n) ]$ r* i9 p    "mon_max_pg_per_osd": "1000"
9 b; d! c  r* F" m9 @}

admin

[root@compute01 ~]#  ceph daemon mgr.compute01 config set mon_max_pg_per_osd 1000
{
    "success": "mon_max_pg_per_osd = '1000' (not observed, change may require restart) "
}