hadoop - 无法打开 localhost :8088. 尝试在 Windows10 上安装 Hadoop3

Question

localhost:9870 工作正常。问题是本地主机:8088。他们和9870一样移动了吗？

Answer 1

没有。如 Apache Hadoop 3.0.0 中所述:

Default ports of multiple services have been changed.

Previously, the default ports of multiple Hadoop services were in the Linux ephemeral port range (32768-61000). This meant that at startup, services would sometimes fail to bind to the port due to a conflict with another application.

These conflicting ports have been moved out of the ephemeral range, affecting the NameNode, Secondary NameNode, DataNode, and KMS. Our documentation has been updated appropriately, but see the release notes for HDFS-9427 and HADOOP-12811 for a list of port changes.

由于 YARN 端口从来不在临时端口范围内，因此不需要更改。

通过查看 yarn-default.xml 可以确认这一点适用于 Hadoop 3.0.0。

| yarn.resourcemanager.webapp.address | ${yarn.resourcemanager.hostname}:8088 | The http address of the RM web application. If only a host is provided as the value, the webapp will be served on a random port.