centos7.5 mysql5.7.28 RPM 安裝

查看系統版本：7.5

cat /etc/redhat-release 

首先下載rmp包：

https://cdn.mysql.com/archives/mysql-5.7/mysql-5.7.28-1.el7.x86_64.rpm-bundle.tar

首先需要在root下才行，然後解壓tar

tar -xvf mysql-5.7.28-1.el7.x86_64.rpm-bundle.tar

由於部分庫會和mariadb衝突，所以可能需要先卸載mariadb

rpm -qa | grep mariadb
mariadb-libs-5.5.56-2.el7.x86_64
rpm -e --nodeps mariadb-libs-5.5.56-2.el7.x86_64

這些包可以不全部安裝，按照順序安裝部分如下：

rpm -ivh mysql-community-common-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-libs-compat-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-client-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-server-5.7.28-1.el7.x86_64.rpm
rpm -ivh mysql-community-devel-5.7.28-1.el7.x86_64.rpm

安裝完成，初始化mysql

mysqld --initialize --user=mysql

查找生產的臨時密碼

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

 

然後我們用此密碼登錄，然後修改密碼

set password=password('123456');

或者

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

注意：mysql 5.7 默認安裝了密碼安全檢查插件（validate_password），默認密碼檢查策略要求密碼必須包含：大小寫字母、數字和特殊符號，並且長度不能少於8位。否則會提示 ERROR 1819 (HY000): Your password does not satisfy the current policy requirements 錯誤。因爲我沒有安裝密碼檢查插件。

 

啓動MYSQL

systemctl start mysqld.service

[root@localhost mysqlsrc]# systemctl status mysqld.service
● mysqld.service - MySQL Server
   Loaded: loaded (/usr/lib/systemd/system/mysqld.service; enabled; vendor preset: disabled)
   Active: active (running) since Fri 2020-02-07 21:36:45 CST; 32min ago
     Docs: man:mysqld(8)
           http://dev.mysql.com/doc/refman/en/using-systemd.html
  Process: 4149 ExecStart=/usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid $MYSQLD_OPTS (code=exited, status=0/SUCCESS)
  Process: 4128 ExecStartPre=/usr/bin/mysqld_pre_systemd (code=exited, status=0/SUCCESS)
 Main PID: 4152 (mysqld)
    Tasks: 35
   CGroup: /system.slice/mysqld.service
           └─4152 /usr/sbin/mysqld --daemonize --pid-file=/var/run/mysqld/mysqld.pid

Feb 07 21:36:44 localhost.localdomain systemd[1]: Starting MySQL Server...
Feb 07 21:36:45 localhost.localdomain systemd[1]: Started MySQL Server.

建立遠程連接賬戶：

mysql> GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION;

設置默認編碼爲utf8

修改/etc/my.cnf，在[mysqld]下加入

character-set-server=utf8

重啓Mysql服務。

將默認的3306端口加入防火牆，以便外部能夠訪問，並重啓防火牆服務，查看端口是否開啓

firewall-cmd --zone=public --add-port=3306/tcp --permanent
systemctl restart firewalld

[root@localhost ~]# firewall-cmd --zone=public --list-ports
3306/tcp