nginx服务一简介与安装

一、nginx介绍

1.nginx服务功能：

• a)web服务
• b)负责均衡
• c)web cache缓存

2.nginx服务优点：

• a)配置简单，灵活
• b)高并发（静态小文件）
• c)占用资源少
• d)功能种类多
• e)支持epoll模型
• f)配合动态服务和Apache有区别
• g)可以对IP限速，限制连接数

二、nginx服务web部署

1.安装准备

[root@nginx ~]# yum install openssl openssl-devel -y
[root@nginx ~]# yum install pcre pcre-devel -y
[root@nginx ~]# wget http://nginx.org/download/nginx-1.15.2.tar.gz
[root@nginx ~]# tar xf nginx-1.6.2.tar.gz 

2.编译安装nginx

[root@nginx ~]# cd nginx-1.6.2
[root@nginx nginx-1.6.2]# useradd nginx -M -s /sbin/nologin
[root@nginx nginx-1.6.2]# ./configure --user=nginx --group=nginx \
--prefix=/usr/local/nginx-1.6.2 --with-http_stub_status_module --with-http_ssl_module
[root@nginx nginx-1.6.2]# make && make install
[root@nginx nginx-1.6.2]# mkdir /application
[root@nginx nginx-1.6.2]# ln -s /usr/local/nginx-1.6.2/ /application/nginx

3.启动nginx准备

3.1配置环境变量

[root@nginx nginx-1.6.2]# cd /application/nginx/
[root@nginx ~]# tail -1 /etc/profile
PATH=/application/nginx/sbin/:$PATH
[root@nginx ~]# source /etc/profile

3.2检查语法

[root@nginx nginx]#nginx -t
nginx: the configuration file /usr/local/nginx-1.6.2/conf/nginx.conf syntax is ok
nginx: configuration file /usr/local/nginx-1.6.2/conf/nginx.conf test is successful

3.2启动

[root@nginx nginx]#nginx 
[root@nginx nginx]# netstat -lntup|grep nginx
tcp        0      0 0.0.0.0:80                  0.0.0.0:*                   LISTEN      4920/nginx

4.关闭防火墙，SE

[root@nginx nginx]# /etc/init.d/iptables stop
iptables: Setting chains to policy ACCEPT: filter          [  OK  ]
iptables: Flushing firewall rules:                         [  OK  ]
iptables: Unloading modules:                               [  OK  ]
[root@nginx nginx]# setenforce 0

5.网页访问

6.部署一个站点

6.1修改首页内容

[root@nginx nginx]# cat html/index.html 
Welcome to https://blog.csdn.net/liang_operations

6.2刷新网页