hdfs3.0部署錯誤

1. 在啟動時，start-dfs.sh start-yarn.sh時報錯

Starting namenodes on [namenode]

ERROR: Attempting to operate on hdfs namenode as root

ERROR: but there is no HDFS_NAMENODE_USER defined. Aborting operation.

Starting datanodes

ERROR: Attempting to operate on hdfs datanode as root

ERROR: but there is no HDFS_DATANODE_USER defined. Aborting operation.

Starting secondary namenodes [datanode1]

ERROR: Attempting to operate on hdfs secondarynamenode as root

ERROR: but there is no HDFS_SECONDARYNAMENODE_USER defined. Aborting operation.

Starting resourcemanager

ERROR: Attempting to operate on yarn resourcemanager as root

ERROR: but there is no YARN_RESOURCEMANAGER_USER defined. Aborting operation.

Starting nodemanagers

ERROR: Attempting to operate on yarn nodemanager as root

ERROR: but there is no YARN_NODEMANAGER_USER defined. Aborting operation.

解決辦法：

注意是在文件開始空白處

在start-dfs.sh中：

HDFS_DATANODE_USER=root

HADOOP_SECURE_DN_USER=hdfs

HDFS_NAMENODE_USER=root

HDFS_SECONDARYNAMENODE_USER=root

在start-yarn.sh中

YARN_RESOURCEMANAGER_USER=root

HADOOP_SECURE_DN_USER=yarn

YARN_NODEMANAGER_USER=root

2. web界面50070無法訪問

解決辦法：

3.0以上版本的web端口為9870,如果要更改的話,需要設(shè)置hdfs-site.xml文件

<property>

? ? ? ? <name>dfs.namenode.http-address</name>

? ? ? ? <value>http://127.0.0.1:50070</value>

</property>

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