报错信息：
[node1][ERROR ] RuntimeError: command returned non-zero exit status: 1
[ceph_deploy][ERROR ] RuntimeError: Failed to execute command: ceph –version
原因：官网中也有对应的说明
Add three OSDs. For the purposes of these instructions, we assume you have an unused disk in each node called /dev/vdb. Be sure that the device is not currently in use and does not contain any important data.
链接：官网
也就是ceph节点挂载的硬盘不能初始化。
vmware增加硬盘之后，在linux中使用
dfisk -l
当能看到信息的时候，代表成功。如果格式化+挂载目录后，将无法创建osd
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