Linux安装Mysql（图文解说详细版，安装包tar包版）

上次教大家用yum安装mysql
https://blog.csdn.net/csdnerM/article/details/121095527，
结果还要小伙伴不知道tar包怎么安装，现在出个tar包安装的教程出来供大家参考

1.官网下载tar包（安装包）

https://downloads.mysql.com/archives/community/

2.查看自己服务器是多少位的

arch

所以我们选择x86_64版本

3.上传到服务器

4.解压

tar -xvf mysql-5.7.39-linux-glibc2.12-x86_64.tar 

注意这里是-xvf，因为是tar包，不是tar.gz包

解压下来多了两个gz文件，中间有test的我们不用

5.移动gz文件，并解压

mv mysql-5.7.39-linux-glibc2.12-x86_64.tar.gz /opt/mysql/

解压

tar -zxvf mysql-5.7.39-linux-glibc2.12-x86_64.tar.gz 

名字太长，改一下名字

mv mysql-5.7.39-linux-glibc2.12-x86_64 mysql5.7

6.创建data目录

记住data目录的路径，待会要用

/opt/mysql/mysql5.7/data

7.修改my.cnf文件

这个mysql启动的时候会默认去找/etc/my.cnf

如果服务器没有改文件加上即可

复制以下内容

[client]
default-character-set=utf8
# 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=/opt/mysql/mysql5.7/data
socket=/tmp/mysql.sock
character-set-server=utf8
collation-server=utf8_general_ci
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0

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

datadir填上面data的路径

8.修改启动参数

⛪️8.1给root用户添加权限

进入/opt/mysql/mysql5.7/support-files

vim mysql.server 

添加--user=root

8.2 修改安装路径

改成

9.初始化mysql

进入bin目录

执行以下命令

./mysqld  --initialize

查看初始化密码

cat /var/log/mysqld.log

上面的初始密码就是 w#,p;4uxhGxr

10.启动mysql

sh mysql.server start

启动成功

11.连接mysql

进入bin目录

./mysql -uroot -p

然后输入初始密码

登录成功！！

12.修改密码

ALTER USER 'root'@'localhost' IDENTIFIED BY '123456.com';

退出之后即可用新密码登录