linux上安装

转至https://blog.csdn.net/sndayyu/article/details/96745748

1.卸载mariadb

[root@localhost ~]# rpm -qa |grep mariadb

mariadb-libs-5.5.41-2.el7_0.x86_64

[root@localhost~]# rpm -qa | grep mariadb-server[root@localhost~]# rpm -e --nodeps mariadb-libs-5.5.41-2.el7_0.x86_64

[root@localhost~]# rpm -qa |grep mariadb

2、下载解压

.windows上安装简单自行百度。这里介绍linux安装流程

下载对应版 ,然后上传到linux上

或者直接在linux：

[root@localhost ~]# cd /usr/local

[root@localhost local]# mkdir mysql

[root@localhost local]# cd mysql

[root@localhost mysql]# wget https://dev.mysql.com/get/Downloads/MySQL-5.7/mysql-5.7.27-1.el7.x86_64.rpm-bundle.tar

传上去或者下载完成后解压：

[root@localhost mysql]# tar -vxf mysql-5.7.27-1.el7.x86_64.rpm-bundle.tar

mysql-community-libs-5.7.27-1.el7.x86_64.rpm

mysql-community-embedded-devel-5.7.27-1.el7.x86_64.rpm

mysql-community-libs-compat-5.7.27-1.el7.x86_64.rpm

mysql-community-devel-5.7.27-1.el7.x86_64.rpm

mysql-community-embedded-compat-5.7.27-1.el7.x86_64.rpm

mysql-community-common-5.7.27-1.el7.x86_64.rpm

mysql-community-client-5.7.27-1.el7.x86_64.rpm

mysql-community-server-5.7.27-1.el7.x86_64.rpm

mysql-community-test-5.7.27-1.el7.x86_64.rpm

mysql-community-embedded-5.7.27-1.el7.x86_64.rpm

3.安装下面四个

rpm -ivh mysql-community-common-5.7.27-1.el7.x86_64.rpm

rpm-ivh mysql-community-libs-5.7.27-1.el7.x86_64.rpm

rpm-ivh mysql-community-client-5.7.27-1.el7.x86_64.rpm

rpm-ivh mysql-community-server-5.7.27-1.el7.x86_64.rpm --nodeps

4.配置

1.如果是以root用户mysql服务,需要执行以下初始化

mysqld --initialize --user=mysql

2.修改/etc/my.cnf 在末尾加上skip-grant-tables 表示可以没密码登录，授权跳过。后面这行还是需要去掉的

3.重启mysql服务：systemctl restart mysqld

5.无密码启动并修改mysql密码,刷新退出

mysql -u root

update mysql.user set authentication_string=password('1234') where user='root';

flush privileges;

quit;

6.删除my.cnf中的最后一行、重启服务

[root@localhost mysql]# systemctl stop mysqld

[root@localhost mysql]# systemctl start mysqld

[root@localhost mysql]# mysql-uroot -p1234

7.远程访问权限

mysql>use mysql

ERROR1820 (HY000): You must reset your password using ALTER USER statement before executing thisstatement.

mysql> alter user 'root'@'localhost' identified by '1234';

Query OK,0 rows affected (0.00sec)

mysql>flush privileges;

Query OK,0 rows affected (0.00sec)

mysql>use mysql;

Reading table informationforcompletion of table and column names

You can turn offthis feature to get a quicker startup with -A

Database changed

mysql> update user set host='%' where user='root';

Query OK,1 row affected (0.00sec)

Rows matched:1 Changed: 1 Warnings: 0mysql>select host,user from user;+-----------+---------------+

| host | user |

+-----------+---------------+

| % | root |

| localhost | mysql.session |

| localhost | mysql.sys |

+-----------+---------------+

3 rows in set (0.00sec)

mysql>quit

Bye[root@localhost~]# systemctl stop mysqld;[root@localhost~]# systemctl start mysqld;

8.关闭防火墙  测试远程连接

[root@localhost ~]# systemctl stop firewalld

windows上安装(解压版)

1.坏境变量path中添加mysql解压后的bin目录

2.在mysql的解压目录下(D:\dev\database\mysql-8.0.18-winx64)添加配置文件mysql.ini

[mysql]

# 设置mysql客户端默认字符集

default-character-set=utf8

[mysqld]

# 绑定IPv4

bind-address=0.0.0.0

# 设置端口号

port=3306

# 设置mysql的安装目录，即解压目录

basedir=D:\\dev\\database\\mysql-8.0.18-winx64

# 设置数据库的数据存放目录

datadir=D:\\dev\database\\mysql-8.0.18-winx64\\data

# 设置允许最大连接数

max_connections=200

# 设置允许连接失败次数

max_connect_errors=10

# 设置服务端的默认字符集

character-set-server=utf8

# 创建表使用的默认存储引擎

default-storage-engine=INNODB

# 使用“mysql_native_password”插件认证

default_authentication_plugin=mysql_native_password

3.初始化mysql，管理员cmd: mysqld --initialize --console

4.安装mysql服务：mysqld --install mysql --defaults-file="D:\dev\database\mysql-8.0.18-winx64\mysql.ini"

5.退出：quit/exit

6.启动服务，管理员cmd：net start mysql(我的服务名是这个，也可以通过管理--服务界面手动开启)

7.使用刚才的密码登陆：mysql -uroot -p 密码(登陆如果卡死的话，多重启几次服务)

8.修改密码，推出重登即可：ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '新密码';