06.第二名称节点配置

克隆一台机器s105来专门存放SecondaryNameNode

1、克隆s100 -> s105

 

    2、打开s105,修改hostname和静态ip

        hostname    // /etc/hostname

        静态ip        // /etc/sysconfig/network-scripts/ifcfg-ens33

 

    3、重启虚拟机，通过putty进行连接

 

    3.5、修改s101的hosts文件，添加

        192.168.116.105 s105

 

         并配置ssh免密登陆

             ssh-copy-id centos@s105

 

    4、配置root的ssh免密登陆

        1)切换到root

            su root

        2)生成公私密钥对

            ssh-keygen -t rsa -P '' -f ~/.ssh/id_rsa

        3)配置免密登陆

            ssh-copy-id root@s101

            ssh-copy-id root@s102

            ssh-copy-id root@s103

            ssh-copy-id root@s104

            ssh-copy-id root@s105

 

    5、使用root权限在所有机器上安装rsync

        xcall.sh yum install -y rsync

 

    6、修改配置文件/soft/hadoop/etc/hadoop/hdfs-site.xml

        添加配置

        <property>

          <name>dfs.namenode.secondary.http-address</name>

          <value>s105:50090</value>

        </property>

 

    7、删除其他节点的所有etc文件夹

        ssh s102 rm -rf /soft/hadoop/etc

        ssh s103 rm -rf /soft/hadoop/etc

        ssh s104 rm -rf /soft/hadoop/etc

        ssh s105 rm -rf /soft/hadoop/etc

 

 

    8、编写xsync脚本，使用此脚本将所有配置文件进行同步

 

        xsync.sh  /soft/hadoop/etc

 

9. /etc/hosts

同步到s101-  s105

 

::1         localhost localhost.localdomain localhost6 localhost6.localdomain6
192.168.116.101 s101
192.168.116.102 s102
192.168.116.103 s103
192.168.116.104 s104
192.168.116.105 s105