mysql安装教程最新_最新mysql安装教程

配置YUM源

# 下载mysql源安装包

shell> wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm

# 安装mysql源

shell> yum localinstall mysql57-community-release-el7-8.noarch.rpm

检查mysql源是否安装成功

shell> yum repolist enabled | grep "mysql.*-community.*"

输出以下内容表示ok

Repodata is over 2 weeks old. Install yum-cron? Or run: yum makecache fast

!mysql-connectors-community/x86_64 MySQL ConnectorsCommunity 74

!mysql-tools-community/x86_64 MySQL ToolsCommunity 74

!mysql57-community/x86_64 MySQL 5.7Community Server 307

可以修改vim /etc/yum.repos.d/mysql-community.repo源，改变默认安装的mysql版本。比如要安装5.6版本，将5.7源的enabled=1改成enabled=0。然后再将5.6源的enabled=0改成enabled=1即可。

安装MySQL

先安装相关依赖：

yum -y install gcc gcc-c++ gcc-g77 autoconf automake zlib* fiex* libxml* ncurses-devel libmcrypt* libtool-ltdl-devel* make cmake bison git openssl openssl-devel

开始安装：

shell> yum install mysql-community-server

启动mysql

systemctl start mysqld

开机启动

systemctl enable mysqld.service

停止服务

systemctl enable mysqld.service

重启服务

systemctl restart mysqld.service

查看状态

systemctl status mysqld.service

mysql查找报错信息&配置信息

查找mysql路径：

which mysqld

输出：/usr/sbin/mysqld

查找my.cnf的路径同时如果有报错信息也会输出

/usr/sbin/mysqld --verbose --help |grep -A 1 'Default options'

my.cnf基本配置(/etc/my.cnf)

# For advice on how to change settings please see

# http://dev.mysql.com/doc/refman/5.7/en/server-configuration-defaults.html

[mysqld]

#

# Remove leading # and set to the amount of RAM for the most important data

# cache in MySQL. Start at 70% of total RAM for dedicated server, else 10%.

# innodb_buffer_pool_size = 128M

#

# Remove leading # to turn on a very important data integrity option: logging

# changes to the binary log between backups.

# log_bin

#

# Remove leading # to set options mainly useful for reporting servers.

# The server defaults are faster for transactions and fast SELECTs.

# Adjust sizes as needed, experiment to find the optimal values.

# join_buffer_size = 128M

# sort_buffer_size = 2M

# read_rnd_buffer_size = 2M

datadir=/var/lib/mysql

socket=/var/lib/mysql/mysql.sock

# Disabling symbolic-links is recommended to prevent assorted security risks

symbolic-links=0

lower_case_table_names=1

log-error=/var/log/mysqld.log

pid-file=/var/run/mysqld/mysqld.pid

sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION'

#validate_password = off

[mysqld]

#character_set_server=utf8

#init_connect='SET NAMES utf8'

#skip-grant-tables

wait_timeout=86400

character-set-server=utf8mb4

[mysql]

default-character-set=utf8mb4

修改默认密码

mysql5.7 会生成默认密码在：/var/log/mysqld.log [Note] A temporary password is generated for root@localhost: lQidlh;BX4*x

通过命令查看默认密码

grep 'temporary password' /var/log/mysqld.log

密码不对 or 找不到密码怎嘛办..?

修改配置文件

vim /etc/my.cnf

在[mysqld]节点添加

skip-grant-tables

重启mysql

用空密码进入

mysql -uroot

update mysql.user set authentication_string=password('123456') where user='root' and Host = 'localhost';

flush privileges;

exit;

还原my.cnf

授权远程连接权限

mysql -u root -p

mysql>GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'youpassword' WITH GRANT OPTION;

FLUSH PRIVILEGES;#重载授权表：

exit;