彻底解决CDH5.12安装过程中 Error: JAVA_HOME is not set and Java could not be found

1 详细报错

+ cat
+======================================================================+
| Error: JAVA_HOME is not set and Java could not be found |
+----------------------------------------------------------------------+
| Please download the latest Oracle JDK from the Oracle Java web site |
| > http://www.oracle.com/technetwork/java/javase/index.html < |
| |
| Cloudera Manager requires Java 1.6 or later. |
| NOTE: This script will find Oracle Java whether you install using |
| the binary or the RPM based installer. |
+======================================================================+
+ exit 1
[root@hadoop0

2 把之前的jdk安装目录放在/usr/java上

重新编辑环境变量

 vim /etc/profile

#set Java
export JAVA_HOME=/usr/java/jdk1.8.0_201
export PATH=.:$JAVA_HOME/bin:$PATH  

　　

source  /etc/profile

3 问题解决，所以还是要提前看一下啊