yum upgrade
yum install net-tools

關閉SELinux
編輯器打開 etc/selinux/config 文件，找到 SELINUX=enforcing 字段，將其改成 SELINUX=disabled ，并重啟設備。
yum -y install httpd mod_ssl
配置防火墻
firewall-cmd --permanent --add-port=80/tcp
firewall-cmd --permanent --add-port=443/tcp
firewall-cmd --reload
開機啟動
systemctl start httpd
systemctl enable httpd
終端輸入如下指令檢查httpd的運行狀態(tài)
sudo systemctl status httpd

添加源
rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
安裝
yum install php70w

1.安裝wget
  yum -y install wget
2.安裝源
  wget https://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm
  rpm -ivh mysql57-community-release-el7-8.noarch.rpm
3.安裝mysql
  yum install mysql-server
4.啟動mysql服務
  systemctl start mysqld
5.查看MySQL的啟動狀態(tài)
  systemctl status mysqld
6.開機啟動
  systemctl enable mysqld
  systemctl daemon-reload
7.修改root本地登錄密碼
  查找mysql生成的隨機密碼
  grep 'temporary password' /var/log/mysqld.log
  mysql -uroot -p
  修改密碼，注意：mysql5.7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(shù)字和特殊符號，并且長度不能少于8位。否則會提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements錯誤
  ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!'; 
8.配置默認編碼為utf8
  修改/etc/my.cnf配置文件，在[mysqld]下添加編碼配置
  [mysqld]
  character_set_server=utf8
  init_connect='SET NAMES utf8'
9.配置mysql遠程連接
  mysql -uroot -p
  use mysql;
  Grant all on *.* to 'root'@'%' identified by 'root用戶的密碼' with grant option;
flush privileges;
然后用以下命令查看哪些用戶和host可以訪問，%代表任意ip地址
select user,host from user;
防火墻添加3306端口
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --reload
10.mysql忘記密碼
1.修改MySQL的配置文件（默認為/etc/my.cnf）,在[mysqld]下添加一行skip-grant-tables
2.service mysqld restart后，即可直接用mysql進入
3.mysql> update mysql.user set authentication_string=password('123qwe') where user='root' and Host = 'localhost';
  mysql> flush privileges;
  mysql> quit;
 將/etc/my.cnf文件還原，重新啟動mysql:service mysql restart,這個時候可以使用mysql -u root -p'123qwe'進入了
 mysql>SET PASSWORD = PASSWORD('newpasswd'); 設置新密碼