Linux常用

安装mariadb

yum install mariadb-server

启动服务

systemctl start mariadb

开机自启动服务

systemctl enable mariadb

配置数据库 

mysql_secure_installation

MySQL安装

yum -y install mysql-community-server

启动MySQL

systemctl start  mysqld.service

查看可安装JAVA

yum -y list java*

安装JAVA

yum -y install java-1.8.0-openjdk*

密钥登录服务器（阿里云）

chmod 400 /root/mysshkey.pem

ssh -i /root/mysshkey.pem root@10.10.xx.xxx