CentOS7安装Mysql5.7

wget \
https://cdn.mysql.com/archives/mysql-5.7/mysql-community-client-5.7.32-1.el7.x86_64.rpm \
https://cdn.mysql.com/archives/mysql-5.7/mysql-community-common-5.7.32-1.el7.x86_64.rpm \
https://cdn.mysql.com/archives/mysql-5.7/mysql-community-libs-5.7.32-1.el7.x86_64.rpm \
https://cdn.mysql.com/archives/mysql-5.7/mysql-community-libs-compat-5.7.32-1.el7.x86_64.rpm \
https://cdn.mysql.com/archives/mysql-5.7/mysql-community-server-5.7.32-1.el7.x86_64.rpm

yum install -y mysql-community-*-5.7.32-1.el7.x86_64.rpm

# 开启MySQL服务器
systemctl start mysqld
# 查看默认生成的密码
cat /var/log/mysqld.log | grep password

mysql -uroot -h127.0.0.1 -p

# 设置密码等级
set global validate_password_length=4;
set global validate_password_policy=0;
# 修改默认密码，注意替换后面的密码
ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '您的密码';

use `mysql`;
# 注意将密码替换掉
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '您的密码' WITH GRANT OPTION;
FLUSH PRIVILEGES;

vim /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
[client]
default-character-set=utf8

[mysql]
default-character-set=utf8

[mysqld]
character-set-server=utf8
#
# 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

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

[client]
default-character-set=utf8

[mysql]
default-character-set=utf8

[mysqld]
character-set-server=utf8