hadoop - Hadoop datanode - ＆gt; namenode通信问题

我有一台运行本地Hadoop安装的Vagrant机器。 Hadoop工作正常，直到今天。今天，Vagrant不安全的SSH密钥停止工作，所以我不得不更换它。现在Hadoop无法运行。在日志中我看到：

17/09/18 09:35:41 INFO ipc.Client: Retrying connect to server: mymachine/192.168.33.10:8020. Already tried 0 time(s); maxRetries=45 17/09/18 09:36:01 INFO ipc.Client: Retrying connect to server: mymachine/192.168.33.10:8020. Already tried 1 time(s); maxRetries=45 17/09/18 09:36:21 INFO ipc.Client: Retrying connect to server: mymachine/192.168.33.10:8020. Already tried 2 time(s); maxRetries=45 17/09/18 09:36:41 INFO ipc.Client: Retrying connect to server: mymachine/192.168.33.10:8020. Already tried 3 time(s); maxRetries=45

声明here是它的数据节点 - ＆gt; namenode通信问题。 core-site.xml包含：

<configuration> <property> <name>fs.defaultFS</name> <value>hdfs://mymachine:8020</value> </property> </configuration>

哪个是对的。尝试getent hosts mymachine会产生192.168.33.10，这意味着主机正常。我试过sudo netstat -antp | grep 8020并得到了：

tcp 0 1 10.0.2.15:42002 192.168.33.10:8020 SYN_SENT 2630/java tcp 0 1 10.0.2.15:42004 192.168.33.10:8020 SYN_SENT 2772/java tcp 0 1 10.0.2.15:41998 192.168.33.10:8020 SYN_SENT 3312/java 所以看来端口也没关系。但是，当我curl http://mymachine:8020时，我得不到回复。我检查了一台相同的机器，正确的答复应该是It looks like you are making an HTTP request to a Hadoop IPC port. This is not the correct port for the web interface on this daemon.。

有什么想法吗？

Hadoop datanode - ＆gt; namenode通信问题

1 个答案: