hadoop(伪)启动没有namenode的问题:connect to host levelhi port 22: Connection refused
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启动有datanode,没有namenode,启动namenode的时候提示:connect to host levelhi port 22: Connection refused,看到这里说连接我的主机22端口时候拒绝连接了,在网上找了不少资料,有说是没装ssh或ssh方面出的错,后来检查我的ssh应该是正常的,后来看到有的大神让检查下ip映射,bingo,忽然想起家里路由器重置了,自己的电脑ip是不是也跟着变了,果然ip从102变到103,改过来再重新试一下,果然问题解决了。
看来问题有时候不一定多复杂,只是基础还是很重要,思路要多,另外个人思考也很重要,再结合网上经验,才能快速排查问题。
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