SecureCRT相关配置
https://blog.csdn.net/ithomer/article/details/9503123
https://blog.51cto.com/sandshell/2109176
mariadb相关
0. mariadb离线安装
1.配置参数
2.日志相关
3.主从复制
4.修改密码
mariadb 10修改密码：update user set password = password(‘12345’) where user = ‘root’;
参考
MySQL 5.7修改密码：update user set authentication_string = password(“新密码”) where user = “用户名”;
参考
错误 ERROR 1805 (HY000): Column count of mysql.user is wrong. Expected 45, found 43.
[root@hecs-x-large-2-linux-20200331103358 ~]# find / -name “mysql_upgrade” #查找
/usr/bin/mysql_upgrade
[root@hecs-x-large-2-linux-20200331103358 ~]# /usr/bin/mysql_upgrade -uroot -p
参考1
参考2