红帽全球峰会5.2. 停止并启动重新平衡
当 OSD 出现故障或您停止了它时，CRUSH 算法会自动启动重新平衡过程，以在剩余的 OSD 之间重新分发数据。
重新平衡可能需要时间和资源，因此请考虑在故障排除或维护 OSD 期间停止重新平衡。
注意
在故障排除和维护过程中，已停止的 OSD 中的放置组会变为 degraded。
先决条件
- Ceph 监控节点的根级别访问权限.
流程
登录到 Cephadm shell：
示例
cephadm shell
[root@host01 ~]# cephadm shellCopy to Clipboard Copied! Toggle word wrap Toggle overflow 在停止 OSD 前设置
noout标志：示例
[ceph: root@host01 /]# ceph osd set noout
[ceph: root@host01 /]# ceph osd set nooutCopy to Clipboard Copied! Toggle word wrap Toggle overflow 完成故障排除或维护后，取消设置
noout标志以启动重新平衡：示例
[ceph: root@host01 /]# ceph osd unset noout
[ceph: root@host01 /]# ceph osd unset nooutCopy to Clipboard Copied! Toggle word wrap Toggle overflow
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