关于 unconfiguer nim master 的问题

Command: failed        stdout: yes           stderr: no

Before command completion, additional instructions may appear below.

0042-233 m_setup:  The NIM Master is already initialized.  You must

unconfigure the NIM Master before you can perform this operation.

如上提示，配置新的nim master要求unconfigure 以前的nim master，怎么解？

谢谢