安装 Java Runtime Environment 1.8

在安装或升级 Tiebreaker 软件之前，必须在主机系统上安装 Java Runtime Environment 1.8。

1. 以 root 身份登录主机系统。

   示例

   login as: root
   root@mcctb's password:
   Last login: Fri Jan  8 21:33:00 2017 from host.domain.com
   
   
2. 安装 Java Runtime Environment 1.8：[root@mcctb ~]# yum install java-1.8.0-openjdk.x86_64

   示例

   [root@mcctb ~]# yum install java-1.8.0-openjdk.x86_64
   Loaded plugins: fastestmirror, langpacks
   Loading mirror speeds from cached hostfile
   ... shortened....
   Dependencies Resolved
   
   ===============================================================================================
   Package               Arch   Version                     Repository                     Size
   ===============================================================================================
   Installing:
    java-1.8.0-openjdk  x86_64  1:1.8.0.144-0.b01.el7_4      updates                      238 k
    ..
    ..
   Transaction Summary
   ================================================================================================
   Install  1 Package  (+ 4 Dependent packages)
   
   Total download size: 34 M
   Is this ok [y/d/N]: y
   
   Installed:
   java-1.8.0-openjdk.x86_64 1:1.8.0.144-0.b01.el7_4
   Complete!