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