hdfs文件系统挂载

sudo wget -nv http://public-repo-1.hortonworks.com/ambari/centos7/2.x/updates/2.6.1.5/ambari.repo -O /etc/yum.repos.d/ambari.repo

sudo wget –nv http://public-repo-1.hortonworks.com/HDP/centos7/2.x/updates/2.6.4.0/hdp.repo -O  /etc/yum.repos.d/hdp.repo

sudo wget -nv http://public-repo-1.hortonworks.com/HDP-GPL/centos7/2.x/updates/2.6.4.0/hdp.gpl.repo -O /etc/yum.repos.d/hdp.gpl.repo
yum install hadoop-hdfs-fuse -y

https://archive.apache.org/dist/hadoop/common/hadoop-2.7.3/

略．．．．
此处可以选在自己的安装方法．如：CDH，HDP,或者apache hadoop
就本文来说：hadoop集群地址：

hdfs://192.168.103.220:9000

export LD_LIBRARY_PATH=/usr/hdp/2.6.4.0-91/usr/lib/:/usr/local/lib:/usr/lib:$LD_LIBRARY_PATH:$HADOOP_HOME/build/c++/Linux-amd64-64/lib:${JAVA_HOME}/jre/lib/amd64/server echo "user_allow_other" >> /etc/fuse.conf 

切换到hdfs用户
cd /usr/hdp/2.6.4.0-91/hadoop
 ./bin/hadoop-fuse-dfs hdfs://192.168.103.220:9000 /mnt
 
 说明：hdfs://192.168.103.220:9000为需要挂载的hdfs目录，此处表示根，注意端口是否默认还是自定义。注意修改

 [root@node1 hadoop]# df -hT
文件系统       类型           容量  已用  可用 已用% 挂载点
/dev/sda3      xfs             18G   15G  3.2G   83% /
devtmpfs       devtmpfs       1.4G     0  1.4G    0% /dev
tmpfs          tmpfs          1.4G     0  1.4G    0% /dev/shm
tmpfs          tmpfs          1.4G  9.7M  1.4G    1% /run
tmpfs          tmpfs          1.4G     0  1.4G    0% /sys/fs/cgroup
/dev/sda1      xfs             97M   97M   96K  100% /boot
tmpfs          tmpfs          283M     0  283M    0% /run/user/0
fuse_dfs       fuse.fuse_dfs   36G     0   36G    0% /mnt
[root@node1 hadoop]# 

[hadoop@node1 ~]$ cd /mnt/
[hadoop@node1 mnt]$ ls
test
[hadoop@node1 mnt]$ echo "aaa" >> test/a.txt 
[hadoop@node1 mnt]$ 

[hadoop@k8s-node2 hadoop-2.7.3]$ ./bin/hadoop fs -cat /test/a.txt
11
111
111
111
222
111
aaa