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6.5. 升级集群为HA集群
检查集群没有告警后，点击HDFS-service actions-namnode HA选项，开始升级。基本没有什么好选择的，根据步骤来就行了。注意即使使用root用户执行的命令也必须全部copy！！
在一路好运的陪伴下，你终于可以看见下图了。恭喜恭喜！！！！！！
检查集群没有告警后，点击Yarn-service actions- Enable ResourceManager HA选项，开始升级。基本没有什么好选择的，根据步骤来就行了。注意即使使用root用户执行的命令也必须全部copy！！
7. 给HDP集群安装Kerberos 7.1. 安装KDC
在集群中找台机器安装KDC，这里我们使用Hadoop01 [root@hadoop01 ~]# yum install krb5-server krb5-libs krb5-workstation Loaded plugins: product-id, refresh-packagekit, security, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Repository HDP-UTILS-1.1.0.21 is listed more than once in the configuration Repository InstallMedia is listed more than once in the configuration HDP-2.6 | 2.9 kB 00:00 HDP-UTILS-1.1.0.21 | 2.9 kB 00:00 InstallMedia | 2.9 kB 00:00 addons | 4.0 kB 00:00 ambari-2.5.0.3 | 2.9 kB 00:00 base | 3.9 kB 00:00 extras | 2.9 kB 00:00 Setting up Install Process Package krb5-libs-1.10.3-10.el6.x86_64 already installed and latest version Package krb5-workstation-1.10.3-10.el6.x86_64 already installed and latest version Resolving Dependencies --> Running transaction check ---> Package krb5-server.x86_64 0:1.10.3-10.el6 will be installed HDP-2.6/filelists_db | 455 kB 00:00 HDP-UTILS-1.1.0.21/filelists_db | 95 kB 00:00 InstallMedia/filelists_db | 455 kB 00:00 addons/filelists_db | 5.9 MB 00:00 ambari-2.5.0.3/filelists_db | 147 kB 00:00 base/filelists_db | 3.7 MB 00:00 extras/filelists_db | 2.2 kB 00:00 --> Finished Dependency Resolution Dependencies Resolved ==================================================================================================================================================================================================== Package Arch Version Repository Size ==================================================================================================================================================================================================== Installing: krb5-server x86_64 1.10.3-10.el6 addons 2.0 M Transaction Summary ==================================================================================================================================================================================================== Install 1 Package(s) Total download size: 2.0 M Installed size: 2.8 M Is this ok [y/N]: y^H^CExiting on user Command [root@hadoop01 ~]# ^C [root@hadoop01 ~]# yum install krb5-server krb5-libs krb5-workstation Loaded plugins: product-id, refresh-packagekit, security, subscription-manager This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register. Repository HDP-UTILS-1.1.0.21 is listed more than once in the configuration Repository InstallMedia is listed more than once in the configuration Setting up Install Process Package krb5-libs-1.10.3-10.el6.x86_64 already installed and latest version Package krb5-workstation-1.10.3-10.el6.x86_64 already installed and latest version Resolving Dependencies --> Running transaction check ---> Package krb5-server.x86_64 0:1.10.3-10.el6 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================================================================================= Package Arch Version Repository Size ================================================================================================================================================= Installing: krb5-server x86_64 1.10.3-10.el6 addons 2.0 M Transaction Summary ================================================================================================================================================= Install 1 Package(s) Total download size: 2.0 M Installed size: 2.8 M Is this ok [y/N]: y Downloading Packages: krb5-server-1.10.3-10.el6.x86_64.rpm | 2.0 MB 00:00 Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Installing : krb5-server-1.10.3-10.el6.x86_64 1/1 Verifying : krb5-server-1.10.3-10.el6.x86_64 1/1 Installed: krb5-server.x86_64 0:1.10.3-10.el6 Complete!
7.2. 检测主机名与IP映射
[root@hadoop01 ~]# cat /etc/hosts 172.29.0.25 hadoop-db 172.29.0.226 hadoop01 172.29.0.227 hadoop02 172.29.0.228 hadoop03 172.29.0.229 hadoop04 172.29.0.21 hadoop05 172.29.0.22 hadoop06 172.29.0.23 hadoop07