1,安装fuse
yum -y install hadoop-hdfs-fuse
2.修改环境变量
vi /etc/profile
增加如下配置：
JAVA_HOME=/usr/jdk64/jdk1.8.0_60
HADOOP_HOME=/usr/hdp/2.4.0.0-169/hadoop
export PATH=$HADOOP_HOME/bin:$JAVA_HOME/bin:$PATH
export LD_LIBRARY_PATH=/usr/hdp/2.4.0.0-169/usr/lib/:/usr/local/lib:/usr/lib:$LD_LIBRARY_PATH:$HADOOP_HOME/build/c++/Linux-amd64-64/lib:${JAVA_HOME}/jre/lib/amd64/server
3.创建挂载点 (要挂载到linux的本地目录)
mkdir /hdfs
4.挂载
方法一：hadoop-fuse-dfs dfs://ocdp /hdfs
[root@vmocdp125 lib]# hadoop-fuse-dfs dfs://ocdp /hdfs INFO /grid/0/jenkins/workspace/HDP-build-centos6/bigtop/build/hadoop/rpm/BUILD/hadoop-2.7.1.2.4.0.0-src/hadoop-hdfs-project/hadoop-hdfs/src/main/native/fuse-dfs/fuse_options.c:164 Adding FUSE arg /hdfs
”ocdp“ 为集群的名称,hdfs-site.xml中nameservice的值
方法二：
自动挂载方法：
修改fstab文件：
查看一下：
grep hadoop /etc/fstab
vi /etc/fstab
添加以下信息：
hadoop-fuse-dfs#dfs://ocdp /hdfs fuse usetrash,rw 0 0
自动挂载：
mount -a
5.查看
[root@vmocdp125 bin]# df -h
Filesystem Size Used Avail Use% Mounted on
/dev/mapper/vg_ocdp01-lv_root
50G 14G 34G 29% /
tmpfs 11G 8.0K 11G 1% /dev/shm
/dev/sda1 477M 33M 419M 8% /boot
/dev/mapper/vg_ocdp01-lv_home
948G 674M 900G 1% /home
fuse_dfs 337G 3.3G 334G 1% /hdfs
进入挂载目录可查看到hdfs上的文件夹都在挂载点/hdfs下
[root@vmocdp125 bin]# cd /hdfs [root@vmocdp125 hdfs]# ll total 52 drwxrwxrwx 5 yarn hadoop 4096 Oct 12 16:11 app-logs drwxr-xr-x 4 hdfs hdfs 4096 Sep 14 20:09 apps drwxr-xr-x 4 yarn hadoop 4096 Sep 14 19:48 ats drwxr-xr-x 4 flume hdfs 4096 Oct 31 18:55 flume drwxr-xr-x 3 ocetl hdfs 4096 Oct 13 14:52 ftp drwxr-xr-x 3 hdfs hdfs 4096 Sep 14 19:48 hdp drwxr-xr-x 3 ocetl hdfs 4096 Oct 21 16:05 hiveQuery drwxrwxrwx 4 ocetl hdfs 4096 Oct 18 17:45 home drwxr-xr-x 3 mapred hdfs 4096 Sep 14 19:48 mapred drwxrwxrwx 4 mapred hadoop 4096 Sep 14 19:48 mr-history drwxrwxrwx 46 spark hadoop 4096 Nov 1 18:26 spark-history drwxrwxrwx 9 hdfs hdfs 4096 Oct 14 17:22 tmp drwxr-xr-x 9 hdfs hdfs 4096 Oct 11 16:54 user
问题：
1..出现"error while loading shared libraries: libjvm.so: cannot open shared object file: No such file or directory"错误，是由于环境变量配置的有问题。
可能没有配置 export LD_LIBRARY_PATH=""
所以在本地/etc/profile文件中把fuse共享库与java共享库加上去就可以了
2.出现"error while loading shared libraries: libhdfs.so.0.0.0: cannot open shared object file: No such file or directory"错误
查找libhdfs.so.0.0.0所在的目录：find / -name libhdfs.so.0.0.0
加入到LD_LIBRARY_PATH中
export LD_LIBRARY_PATH=/usr/hdp/2.4.0.0-169/usr/lib/:/usr/local/lib:/usr/lib:$LD_LIBRARY_PATH:$HADOOP_HOME/build/c++/Linux-amd64-64/lib:${JAVA_HOME}/jre/lib/amd64/server
3.hadoop-fuse-dfs cmmand not found
安装hadoop-fuse-dfs后HADOOP_HOME的bin目录下有个hadoop-fuse-dfs可执行文件，找不到这个命令是因为没有把HADOOP_HOME加入到PATH中
在PATH中增加$HADOOP_HOME/bin: