CentOS 7 架设LNMP动态网站

1.安装Nginx

1）使用Nginx官方的yum源

[root@localhost ~]# vim /etc/yum.repos.d/nginx.repo
[nginx]
name=nginx repo
baseurl=http://nginx.org/packages/centos/7/$basearch/
gpgcheck=0
enabled=1

2）安装并启动Nginx

[root@localhost ~]# yum install nginx -y
[root@localhost ~]# systemctl start nginx
[root@localhost ~]# systemctl enable nginx

2.使用第三方源安装php

1）移除旧版php

[root@localhost ~]# yum list installed | grep php
[root@localhost ~]# yum remove php*

2）安装php源

[root@localhost ~]# yum install epel-release -y
[root@localhost ~]# yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm -y

3）安装php及扩展

[root@localhost ~]# yum install -y php74-php-fpm php74-php-cli php74-php-bcmath php74-php-gd php74-php-json php74-php-mbstring php74-php-mcrypt php74-php-mysqlnd php74-php-opcache php74-php-pdo php74-php-pecl-crypto php74-php-pecl-mcrypt php74-php-pecl-geoip php74-php-recode php74-php-snmp php74-php-soap php74-php-xml

4）查询其他可安装的扩展

[root@localhost ~]# yum search php74

5）查看是否成功安装

[root@localhost ~]# php74 -v #查看是否成功安装
[root@localhost ~]# php74 -m #查看所有的扩展

6）查询配置文件所在的位置

[root@localhost ~]# rpm -ql php74-php-fpm
[root@localhost ~]# rpm -ql php74-php-common

7）启动php-fpm　　

[root@localhost ~]# systemctl start php74-php-fpm
[root@localhost ~]# systemctl enable php74-php-fpm

3.安装MariaDB

1）使用MariaDB官方的yum源

[root@localhost ~]# vim /etc/yum.repos.d/mariadb.repo
[mariadb]
name = MariaDB
baseurl = http://yum.mariadb.org/10.5.0/centos74-aarch64/ #这个链接换成你要的版本地址
gpgkey=https://yum.mariadb.org/RPM-GPG-KEY-MariaDB
gpgcheck=1

2）安装并启动MariaDB

[root@localhost ~]# yum install mariadb-server -y
[root@localhost ~]# systemctl start mariadb
[root@localhost ~]# systemctl enable mariadb

4.配置LNMP架构

1）配置Nginx实现动态请求转发至php

[root@localhost ~]# vim /etc/nginx/conf.d/php.conf
server {
listen 80;
server_name localhost;
root /usr/share/nginx/html;
index index.php index.html;

location ~ \.php$ {
fastcgi_pass 127.0.0.1:9000;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME /usr/share/nginx/html$fastcgi_script_name;
include fastcgi_params;
}
}

2）添加php测试页面

测试phpinfo

[root@localhost ~]# vim /usr/share/nginx/html/info.php
<?php
phpinfo();
?>

使用mysqli模块测试连接mysql

[root@localhost ~]# vim /usr/share/nginx/html/mysqli.php
<?php
$servername = "localhost";
$username = "root";
$password = "";

// 创建连接
$conn = mysqli_connect($servername, $username, $password);

// 检测连接
if (!$conn) {
die("Connection failed: " . mysqli_connect_error());
}
echo "连接成功";
?>

使用pdo模块测试连接mysql

[root@localhost ~]# vim /usr/share/nginx/html/mysqlpdo.php
<?php
$servername = "localhost";
$username = "root";
$password = "";

try {
$conn = new PDO("mysql:host=$servername;dbname=test", $username, $password);
echo "连接成功";
}
catch(PDOException $e)
{
echo $e->getMessage();
}
?>

5.PHP配置文件优化

1）php-ini优化（/etc/opt/remi/php74/php.ini）

//打开php的安全模式,控制php执行危险函数, 默认是Off,改为On
sql.safe_mode = Off
//关闭php头部信息, 隐藏版本号, 默认是On,该为Off
expose_php = On
//错误信息输出控制
display_error = Off
error_reporting = E_WARNING & E_ERROR
//记录错误日志至后台, 方便追溯
log_errors = On
error_log = /var/log/php_error.log
//每个脚本时间最大内存
memory_limit = 128M
//上传文件最大许可,默认2M, 建议调整为16,32M
upload_max_filesize = 2M
//禁止远程执行phpshell,默认On, 建议Off
allow_url_fopen = On
//时区调整,默认PRC, 建议调整为Asia/Shanghai
date.timezone = PRC

//整体优化后配置文件
sql.safe_mode = Off
expose_php = Off
display_error = Off
error_reporting = E_WARNING & E_ERROR
log_errors = On
error_log = /var/log/php_error.log
upload_max_filesize = 50M
allow_url_fopen = Off
date.timezone = Asia/Shanghai

2）php-fpm优化
PHP-FPM配置文件 4核16G、8核16G

[root@localhost ~]# vim /etc/opt/remi/php74/php-fpm.d/www.conf
[global]
pid = /var/run/php-fpm.pid
#php-fpm程序错误日志
error_log = /var/log/php/php-fpm.log
log_level = warning
rlimit_files = 655350
events.mechanism = epoll

[www]
user = nginx
group = nginx
listen = 127.0.0.1:9000
listen.owner = www
listen.group = www
listen.mode = 0660

listen.allowed_clients = 127.0.0.1
pm = dynamic
pm.max_children = 512
pm.start_servers = 10
pm.min_spare_servers = 10
pm.max_spare_servers = 30
pm.process_idle_timeout = 15s;

pm.max_requests = 2048

#php-www模块错误日志
php_flag[display_errors] = off
php_admin_value[error_log] = /var/log/php/php-www.log
php_admin_flag[log_errors] = on

#php慢查询日志
request_slowlog_timeout = 5s
slowlog = /var/log/php/php-slow.log
PHP5-FPM配置详解释

[global]
#pid设置, 记录程序启动后pid
pid = /var/run/php-fpm.pid
#php-fpm程序启动错误日志路径
error_log = /var/log/php/php-fpm_error.log
# 错误级别. 可用级别为: alert（必须立即处理）,error（错误情况）, warning（警告情况）, notice（一般重要信息）, debug（调试信息）. 默认: notice.
log_level = warning
#设置文件打开描述符的rlimit限制.
rlimit_files = 65535
events.mechanism = epoll

#启动进程的用户和组
[www]
user = www
group = www

# fpm监听端口
listen = 127.0.0.1:9000
# unix socket设置选项，如果使用tcp方式访问，这里注释即可。
listen.owner = www
listen.group = www
# 允许访问FastCGI进程的IP，any不限制
listen.allowed_clients = 127.0.0.1

# pm设置动态调度
pm = dynamic
# 同一时刻最大的php-fpm子进程数量
pm.max_children = 200
# 动态方式下的起始php-fpm进程数量
pm.start_servers = 20
# 动态方式下服务器空闲时最小php-fpm进程数量
pm.min_spare_servers = 10
# 动态方式下服务器空闲时最大php-fpm进程数量
pm.max_spare_servers = 30
# 最大请求
pm.max_requests = 1024
pm.process_idle_timeout = 15s;

# FPM状态页面,用于监控php-fpm状态使用
pm.status_path = /status
# 错误日志
php_flag[display_errors] = off
php_admin_value[error_log] = /var/log/php/php-www_error.log
php_admin_flag[log_errors] = on

# 配置php慢查询, 以及慢查询记录日志位置
request_slowlog_timeout = 5s
slowlog = /var/log/php/php-slow.log