hadoop集群算PI值出现No route to host
2016-09-19 11:54
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解决方法:
检查每一个节点
先看主机名和hosts里面的配置名称是否一样
我们可以看到主机名是master,和hosts里面的master是一致的,不一致就要改成一样
然后在主机上ping 主节点和从节点的主机名看能不能ping的通
如果ping的通就去看一下防火墙关了没,在终端切入到root用户,输入service iptables stop
出现上图中的ok,说明防火墙以前没关,现在关了,然后在从节点上操作和主节点的一样的步骤就可以,这样就不会出现No route to host异常了
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