通过nfs3将hdfs挂载到本地

1.启动hdfs

start-dfs.sh (启动后使用jps查看进程是否启动)

2.执行hdfs portmap start和hdfs nfs3 start

使用jps查看portmap和nfs3是否启动

3.执行mount -t nfs -o vers=3,proto=tcp,nolock 10.211.55.38:/ /hdfs

挂载到本地目录

备注：

hadoop配置修改

1.core-site.xml

<property>

<name>hadoop.proxyuser.root.groups</name>

<value>*</value>

<description>

The ‘nfsserver‘ user is allowed to proxy all members of the ‘nfs-users1‘ and

‘nfs-users2‘ groups. Set this to ‘*‘ to allow nfsserver user to proxy any group.

</description>

</property>

<property>

<name>hadoop.proxyuser.root.hosts</name>

<value>*</value>

<description>

This is the host where the nfs gateway is running. Set this to ‘*‘ to allow

requests from any hosts to be proxied.

</description>

</property>

2.hdfs-site.xml

<property>

<name>dfs.namenode.accesstime.precision</name>

<value>3600000</value>

<description>The access time for HDFS file is precise upto this value.

The default value is 1 hour. Setting a value of 0 disables

access times for HDFS.

</description>

</property>

<property>

<name>dfs.nfs3.dump.dir</name>

<value>/tmp/.hdfs-nfs</value>

3.log4j.properties

log4j.logger.org.apache.hadoop.hdfs.nfs=DEBUG

log4j.logger.org.apache.hadoop.oncrpc=DEBUG