我在通过ambari server界面去安装一个hadoop集群的时候，反复显示注册ambari agent失败显示超时的情况，如下
There is connectivity issues between the nodes. Please check if you can ssh between the nodes or reachable.
@wang feng also check whether you added the machine to ~/.ssh/know_hosts
@wang feng has this been resolved? Please accept best answer or provide your own solution.