1.运行环境变量，获取keytab票据：
source component_env
klist -kt ***.keytab
kinit -kt ********
2.登陆过程报错：
①.bomc@HN2-103-H13-02Rs-BDI2:~> cd hadoopclient/
-bash: cd: hadoopclient/: Permission denied
报错原因：权限问题
解决办法：切换到root用户：chown -R *：* hadoopclient/
②.bomc@HN2-103-H13-02Rs-BDI2:~/hadoopclient> kinit -kt ***********
kinit: Resource temporarily unavailable while getting initial credentials
报错原因：一般来说是网络问题，检查/etc/hosts文件，没问题后，找到环境变量中用到的文件是生产环境的信息，
解决办法：我从其他机器中scp了一个文件过来，重新source了一下环境变量
③.bomc@HN2-103-H13-02Rs-BDI2:~/hadoopclient> cd hadoop/bin/
bomc@HN2-103-H13-02Rs-BDI2:~/hadoopclient/hadoop/bin> ./hadoop fs -ls /
./hadoop: line 144: /usr/jdk64/jdk1.7.0_67/bin/java: No such file or directory
./hadoop: line 144: exec: /usr/jdk64/jdk1.7.0_67/bin/java: cannot execute: No such file or directory
bomc@HN2-103-H13-02Rs-BDI2:~/hadoopclient/hadoop/bin>
报错原因：没有找到jdk文件
解决办法：从其他机器中scp了一个文件过来，scp -r jdk64/ root@10.243.160.101:/usr/
④.bomc@HN2-103-H13-02Rs-BDI2:~/hadoopclient/hadoop/bin> ./hadoop fs -ls /
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=512m; support was removed in 8.0
18/08/24 16:24:13 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
18/08/24 16:24:14 WARN hdfs.DFSUtil: Namenode for hnbigdata remains unresolved for ID nn1. Check your hdfs-site.xml file to ensure namenodes are configured properly.
18/08/24 16:24:14 WARN hdfs.DFSUtil: Namenode for hnbigdata remains unresolved for ID nn2. Check your hdfs-site.xml file to ensure namenodes are configured properly.
-ls: java.net.UnknownHostException: hnbigdata001
Usage: hadoop fs [generic options] -ls [-d] [-h] [-R] [<path> ...]
报错原因：xml文件用的生产环境信息，
解决办法：重新上传文件
