1、Centos7系统库中默认是没有nginx的rpn包的，所以我们需要先更新下rpm依赖库
(1)：使用yum安装nginx，安装nginx库
rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/nginx-release-centos-7-0.el7.ngx.noarch.rpm
(2)：使用下面命令安装nginx
yum -y install nginx
(3)：启动nginx
service nginx start #centos6
或
systemctl start nginx.service #centos7
(4)：防火墙允许通过80端口-
vim /etc/sysconfig/iptables
# Generated by iptables-save v1.4.7 on Thu Dec 28 19:47:19 2017 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [21691:949300] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 80 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT
(5)：重启防火墙
service iptables restart
(6)：访问网站，查看是否出现 'Welcome To Nginx'，如果想更改网站根目录，修改地址：vim /etc/nginx/conf.d/default.conf，修改Root 后面的路径，详细请参考：Liscookie
2、安装Mysql，先更新yum源
(1)：yum源下载地址，根据自己需要的版本选择相应的源
https://dev.mysql.com/downloads/repo/yum/
(2)：我们版本是6.x的，所以选择linux 6 下载
wget https://repo.mysql.com//mysql57-community-release-el6-11.noarch.rpm
(3)：安装mysql的yum源
rpm -Uvh mysql57-community-release-el6-11.noarch.rpm
或
yum -y localinstall mysql57-community-release-el6-11.noarch.rpm
(4)：查看是否配置mysql源成功
在/etc/yum.repos.d下面
(5)：安装Mysql
yum -y install mysql-community-server
#时间有点长，稍微等一下
(6)：开始mysql服务
service mysqld start
(7)：Mysql安装成功之后，会自动创建root的密码，存储在/var/log/mysqld.log，可以通过以下命令来查看
grep 'temporary password' /var/log/mysqld.log
(8)：登录mysql，修改密码
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'Wang123!';
(9)：开启远程链接，iptables开放3306端口
vim /etc/sysconfig/iptables
(10)：重启防火墙使iptables生效
service iptables restart
3、安装PHP
(1)：更新yum源
rpm -Uvh http://ftp.iij.ad.jp/pub/linux/fedora/epel/6/x86_64/epel-release-6-8.noarch.rpm
rpm -Uvh http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
(2)：安装PHP
yum -y install --enablerepo=remi --enablerepo=remi-php56 php php-bcmath php-opcache php-devel php-mbstring php-mcrypt php-mysqlnd php-gd php-xml php-memcache php-redis php-fpm php-mysql php-common php-mssql
(3)：配置php.ini文件，关闭php信息头
vim /etc/php.ini
#366行左右
expose_php = Off #关闭phpxinxi
(4)：启动PHP，设置开机启动
service php-fpm restart #启动php
chkconfig php-fpm --level 2345 on #设置开机启动
OK，至此，已经安装完成了LNMP
source:https://www.cnblogs.com/willamwang/p/8241506.html