hadoop集群搭建备忘
hdfs-site.xml 要配置dfs.secondary.http.address，也就是说secondary在一个集群中是必须的，否则datanode会报“Cannot assign requested address”错误，而namenode上启动时会报：Stopping secondary namenodes
0.0.0.0: ssh: connect to host 0.0.0.0 port 36000: Connection refused
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