meanmee removed a comment on issue #12363: distributed training notebook tests URL: https://github.com/apache/incubator-mxnet/issues/12363#issuecomment-416823724 @eric-haibin-lin 我可以从a无密码ssh到b，也可以从b无密码ssh到a，但不能a无密码ssh到a，b也不能无密码ssh到b。而问题应该正是如此
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