这篇文章主要为大家展示了“linux如何安装MySQL5.7的方法”，内容简而易懂，条理清晰，希望能够帮助大家解决疑惑，下面让小编带领大家一起研究并学习一下“linux如何安装mysql5.7的方法”这篇文章吧。

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mysql 单节点安装,前查询:https://my.oschina.net/u/3411575/blog/5047890

步骤1:

自行下载mysql5.7

步骤2:

解压:

tar -xvf mysql-5.7.26-linux-glibc2.12-x86_64.tar.gz

步骤3:

移动解压得到的文件夹,并重命名:

mv mysql-5.7.26-linux-glibc2.12-x86_64 /usr/local/mysql

步骤4:

创建文件夹

/home/mysql/data3306

/home/mysql/data3307

/home/mysql/data3309

步骤5:

编辑/etc/my.cnf

client]
port=3306
socket=/tmp/mysql.sock

[mysqld_multi]
mysqld = /usr/local/mysql/bin/mysqld_safe
mysqladmin = /usr/local/mysql/bin/mysqladmin
log = /home/mysql/mysqld_multi.log

[mysqld]
user=mysql
basedir = /usr/local/mysql
sql_mode = STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION
[mysqld3306]
mysqld=mysqld
mysqladmin=mysqladmin
datadir=/home/mysql/data3306/data
port=3306
server_id=3306
socket=/tmp/data3306.sock
log-output=file
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /home/mysql/mysql3306/log/slow.log
log-error = /home/mysql/mysql3306/log/error.log
binlog_format = mixed
log-bin = /home/mysql/mysql3306/log/mysql3306_bin

[mysqld3309]
mysqld=mysqld
mysqladmin=mysqladmin
datadir=/home/mysql/data3308/data
port=3309
server_id=3309
socket=/tmp/data3309.sock
log-output=file
slow_query_log = 1
long_query_time = 1
slow_query_log_file = /home/mysql/mysql3309/log/slow.log
log-error = /home/mysql/mysql3309/log/error.log
binlog_format = mixed
log-bin = /home/mysql/mysql3309/log/mysql3309_bin

步骤6:
新建单独实例的初始化配置文件(要与/etc/my.cnf文件配置保持一致)  分别存放在 /home/mysql/data3306    /home/mysql/data3307    /home/mysql/data3309 中

my.cnf(3306.cnf)

[client]
port= 3306
socket= /home/mysql/data3306/mysql.sock
default-character-set=utf8
[mysqld]

user=mysql

port=3306
basedir=/usr/local/mysql

datadir=/home/mysql/data3306/data

server_id=3306

socket=/home/mysql/data3306/mysql.sock

log-output=file

slow_query_log=1

long_query_time=1

slow_query_log_file=/home/mysql/data3306/log/slow.log

symbolic-links=0

log-error=/home/mysql/data3306/log/error.log

log-bin=/home/mysql/data3306/log/bin.log

pid-file=/home/mysql/data3306/mysql3306.pid
binlog_format=mixed

lower-case-table_names=1

log-bin-trust-function-creators=1

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

character-set-server=utf8

my.cnf(3307.cnf)

[client]
port= 3307
socket= /home/mysql/data3307/mysql.sock
default-character-set=utf8
[mysqld]

user=mysql

port=3307
basedir=/usr/local/mysql

datadir=/home/mysql/data3307/data

server_id=3307

socket=/home/mysql/data3307/mysql.sock

log-output=file

slow_query_log=1

long_query_time=1

slow_query_log_file=/home/mysql/data3307/log/slow.log

symbolic-links=0

log-error=/home/mysql/data3307/log/error.log

log-bin=/home/mysql/data3307/log/bin.log

pid-file=/home/mysql/data3307/mysql3307.pid
binlog_format=mixed

lower-case-table_names=1

log-bin-trust-function-creators=1

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

character-set-server=utf8

my.cnf(3309.cnf)

[client]
port= 3309
socket= /home/mysql/data3309/mysql.sock
default-character-set=utf8
[mysqld]

user=mysql

port=3309
basedir=/usr/local/mysql

datadir=/home/mysql/data3309/data

server_id=3309

socket=/home/mysql/data3309/mysql.sock

log-output=file

slow_query_log=1

long_query_time=1

slow_query_log_file=/home/mysql/data3309/log/slow.log

symbolic-links=0

log-error=/home/mysql/data3309/log/error.log

log-bin=/home/mysql/data3309/log/bin.log

pid-file=/home/mysql/data3309/mysql3309.pid
binlog_format=mixed

lower-case-table_names=1

log-bin-trust-function-creators=1

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

character-set-server=utf8

步骤6-1:

创建文件夹/home/mysql/data330{6,7,9}/log并创建文件图中4个文件

步骤7:

开始赋权限

chown mysql:mysql -R /home/mysql/
chown mysql:mysql -R /usr/local/mysql

步骤8:

初始化数据库, 这里生成mysql.sock文件 ：

/usr/local/mysql/bin/mysqld --defaults-file=/home/mysql/data3306/my.cnf --initialize --basedir=/usr/local/mysql/ --datadir=/home/mysql/data3306/data
/usr/local/mysql/bin/mysqld_safe --defaults-file=/home/mysql/data3306/my.cnf &


/usr/local/mysql/bin/mysqld --defaults-file=/home/mysql/data3307/my.cnf --initialize --basedir=/usr/local/mysql/ --datadir=/home/mysql/data3307/data
/usr/local/mysql/bin/mysqld_safe --defaults-file=/home/mysql/data3307/my.cnf &

/usr/local/mysql/bin/mysqld --defaults-file=/home/mysql/data3309/my.cnf --initialize --basedir=/usr/local/mysql/ --datadir=/home/mysql/data3309/data
/usr/local/mysql/bin/mysqld_safe --defaults-file=/home/mysql/data3309/my.cnf &

这里会生成默认密码,可以去error.log中看

//-----------------------------------------以上-数据库初始化完毕----

步骤9:

命令行中运行各个mysql实例:

/usr/local/mysql/bin/mysql -uroot -p -S /home/mysql/data3306/mysql.sock  

输入初始化密码:

修改密码:

SET PASSWORD = PASSWORD('123456');
ALTER USER 'root'@'localhost' PASSWORD EXPIRE NEVER;
FLUSH PRIVILEGES;

设置navicat可连接:

use mysql                                            #访问mysql库
update user set host = '%' where user = 'root';      #使root能再任何host访问
FLUSH PRIVILEGES;                                    #刷新

步骤10:

navicat连接数据库

停止节点: 

查看进程号 :ps aux | grep mysql

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