5.重启Cloudera Manager Server
[root@ip-172-31-6-83 shell]# systemctl restart cloudera-scm-server
6.查看Cloudera Manager已经使用的是OpenJDK
7.移除所有节点的Oracle JDK
[root@ip-172-31-6-83 shell]# sh ssh_do_all.sh node.list "yum -y remove oracle-j2sdk1.7"
[root@ip-172-31-6-83 shell]# sh ssh_do_all.sh node.list "yum -y remove oracle-j2sdk1.8"