1.执行名称ceph-deploy new node2，报错：
bash: python2: command not found
[ceph_deploy][ERROR ] RuntimeError: connecting to host: node2 resulted in errors: IOError cannot send (already closed?)原因是node2上没有安装python2，通过命令apt install python-minimal安装即可。
2.
1.执行名称ceph-deploy new node2，报错：
bash: python2: command not found
[ceph_deploy][ERROR ] RuntimeError: connecting to host: node2 resulted in errors: IOError cannot send (already closed?)原因是node2上没有安装python2，通过命令apt install python-minimal安装即可。
2.
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