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Hadoop HA的搭建

2024-08-12 07:17:01   219人阅读

1.首先添加hosts文件

vim /etc/hosts10.0.110.56  MSJTVL-DSJC-H0110.0.110.57  MSJTVL-DSJC-H0310.0.110.58  MSJTVL-DSJC-H0510.0.110.60  MSJTVL-DSJC-H0210.0.110.61  MSJTVL-DSJC-H04

2.几台机器做互信

Setup passphraseless sshNow check that you can ssh to the localhost without a passphrase:  $ ssh localhostIf you cannot ssh to localhost without a passphrase, execute the following commands:  $ ssh-keygen -t dsa -P ‘‘ -f ~/.ssh/id_dsa  $ cat ~/.ssh/id_dsa.pub >> ~/.ssh/authorized_keys

把其他几台机器的秘钥文件复制到MSJTVL-DSJC-H01的authorized_keys文件中

[hadoop@MSJTVL-DSJC-H01 .ssh]$ scp hadoop@MSJTVL-DSJC-H02:/hadoop/.ssh/id_dsa.pub ./id_dsa.pub2[hadoop@MSJTVL-DSJC-H01 .ssh]$ scp hadoop@MSJTVL-DSJC-H03:/hadoop/.ssh/id_dsa.pub ./id_dsa.pub3[hadoop@MSJTVL-DSJC-H01 .ssh]$ scp hadoop@MSJTVL-DSJC-H04:/hadoop/.ssh/id_dsa.pub ./id_dsa.pub4[hadoop@MSJTVL-DSJC-H01 .ssh]$ scp hadoop@MSJTVL-DSJC-H05:/hadoop/.ssh/id_dsa.pub ./id_dsa.pub5[hadoop@MSJTVL-DSJC-H01 .ssh]$ cat ~/.ssh/id_dsa.pub2 >> ~/.ssh/authorized_keys[hadoop@MSJTVL-DSJC-H01 .ssh]$ cat ~/.ssh/id_dsa.pub3 >> ~/.ssh/authorized_keys[hadoop@MSJTVL-DSJC-H01 .ssh]$ cat ~/.ssh/id_dsa.pub4 >> ~/.ssh/authorized_keys[hadoop@MSJTVL-DSJC-H01 .ssh]$ cat ~/.ssh/id_dsa.pub5 >> ~/.ssh/authorized_keys

以上操作实现了MSJTVL-DSJC-H02,3,4,5对MSJTVL-DSJC-H01的无密码登录

要是实现MSJTVL-DSJC-H01-5的全部互信则把MSJTVL-DSJC-H01上的authorized_keys文件COPY到其他机器上去

[hadoop@MSJTVL-DSJC-H02 ~]$ scp hadoop@MSJTVL-DSJC-H01:/hadoop/.ssh/authorized_keys /hadoop/.ssh/authorized_keys

　

下载相应的tar包

wget http://apache.fayea.com/hadoop/common/hadoop-2.6.4/hadoop-2.6.4.tar.gz

 

Hadoop HA的搭建


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