ubuntu 14.04 安装mysql
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While MySql 5.5 is the default for Ubuntu 14.04, MySql 5.6 is available in the default repositories. It can be installed simply using:
sudo apt-get update sudo apt-get upgrade sudo apt-get install mysql-server-5.6
If you have existing data in a MySql 5.5 database, it should be migrated automatically. Though it is always a good idea to make a backup before doing a major upgrade.
First make a backup of the data in your existing database:
mysqldump --lock-all-tables -u root -p --all-databases > dump.sql
mysqldump -u USERNAME -p --default-character-set=utf8mb4 USER_DATABASE > backup.sql
Then after installing the newer version, you can restore if needed by running:
mysql -u root -p < dump.sql
mysql -u root -p 数据库名 < dump.sql
mysql -u USERNAME -p --default-character-set=utf8mb4 USER_DATABASE < backup.sql
mysql修改远程连接
第一步:
vim /etc/mysql/my.cnf找到bind-address = 127.0.0.1
注释掉这行,如:#bind-address = 127.0.0.1
或者改为: bind-address = 0.0.0.0
允许任意IP访问;
或者自己指定一个IP地址。
重启 MySQL:sudo /etc/init.d/mysql restart
第二步:
授权用户能进行远程连接
grant all privileges on *.* to root@"%" identified by "password" with grant option;
flush privileges;
第一行命令解释如下,*.*:第一个*代表数据库名;第二个*代表表名。这里的意思是所有数据库里的所有表都授权给用户。root:授予root账号。“%”:表示授权的用户IP可以指定,这里代表任意的IP地址都能访问MySQL数据库。“password”:分配账号对应的密码,这里密码自己替换成你的mysql root帐号密码。
第二行命令是刷新权限信息,也即是让我们所作的设置马上生效。
为了消除linux环境下大小写敏感问题,设置如下:vi /etc/mysql/my.cnf
在[mysqld]中添加:
lower_case_table_names = 1;
utf8mb4配置
[mysqld] character-set-server = utf8mb4 [mysql] default-character-set = utf8mb4