cd /usr/local/heanny/
下载
wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
sudo rpm -ivh mysql-community-release-el7-5.noarch.rpm
安装服务
sudo yum install mysql-server
systemctl start mysqld
查看临时密码
grep "password" /var/log/mysqld.log
设置密码
set password for 'root'@'localhost' =password('password');
设置远程登录
grant all privileges on *.* to root@'%'identified by 'password';
提交
flush privileges;
树莓派(MariaDB)设置远程登陆
vim /etc/mysql/mariadb.conf.d/50-server.cnf
修改
# bind-address = 127.0.0.1
查询所有数据库占用磁盘空间大小的SQL语句:
select TABLE_SCHEMA, concat(truncate(sum(data_length)/1024/1024,2),' MB') as data_size,
concat(truncate(sum(index_length)/1024/1024,2),'MB') as index_size
from information_schema.tables
group by TABLE_SCHEMA
order by data_length desc;
查询单个库中所有表磁盘占用大小的SQL语句:
select TABLE_NAME, concat(truncate(data_length/1024/1024,2),' MB') as data_size,
concat(truncate(index_length/1024/1024,2),' MB') as index_size
from information_schema.tables where TABLE_SCHEMA = 'TestDB'
group by TABLE_NAME
order by data_length desc;