基于CentOS 7.9环境部署MySQL 5.7服务

sudo yum -y install vim

sudo setenforce Permissive

sudo vim /etc/selinux/config
  SELINUX=permissive

sudo systemctl stop firewalld.service
sudo systemctl disable firewalld.service

sudo su -
echo -e '[mysql57-community]
name=MySQL 5.7 Community Server
baseurl=http://repo.mysql.com/yum/mysql-5.7-community/el/7/$basearch/
enabled=1
gpgcheck=0
gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-mysql
' > /etc/yum.repos.d/mysql-community.repo
exit

sudo yum -y install mysql-community-server

sudo mkdir -p /data/var/lib/mysql/
sudo chown mysql:mysql /data/var/lib/mysql/
sudo chmod o-r /data/var/lib/mysql/

sudo mkdir /data/var/log/

sudo touch /data/var/log/mysqld.log
sudo chown mysql:mysql /data/var/log/mysqld.log
sudo chmod o-r /data/var/log/mysqld.log

sudo vim /etc/my.cnf
  [mysql]
  socket=/data/var/lib/mysql/mysql.sock

  [mysqld]
  datadir=/data/var/lib/mysql
  socket=/data/var/lib/mysql/mysql.sock
  log-error=/data/var/log/mysqld.log

  character-set-server=utf8mb4
  collation-server=utf8mb4_general_ci    # MySQL 8.0 utf8mb4_0900_ai_ci

sudo systemctl enable mysqld.service
sudo systemctl start mysqld.service

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

mysql -uroot -p
ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!';
quit