卸载openjdk
1.查看已经安装的jdk
rpm –qa|grep jdk
java-1.7.0-openjdk-1.7.0.141-2.6.10.5.el7.x86_64
java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64
java-1.8.0-openjdk-headless-1.8.0.131-11.b12.el7.x86_64
java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.5.el7.x86_64
ldap-4.19-1.el7.noarch
copy-jdk-configs-2.2-3.el7.noarch
2.卸载命令
yum -y remove java-1.7.0-openjdk-1.7.0.141-2.6.10.5.el7.x86_64
yum -y remove java-1.8.0-openjdk-1.8.0.131-11.b12.el7.x86_64
yum -y remove java-1.8.0-openjdk-headless-1.8.0.131-11.b12.el7.x86_64
yum -y remove java-1.7.0-openjdk-headless-1.7.0.141-2.6.10.5.el7.x86_64
.noarch文件不用
3.用Java –version查看
提示如下： No such file or directoy卸载完成
卸载mysql
执行命令yum remove mariadb-libs即可。