nginx安装配置

下载nginx

地址：https://nginx.org/en/download.html

安装nginx需要的包

yum install -y gcc-c++ zlib zlib-devel openssl openssl-devel pcre pcre-devel

解压nginx

tar -zxvf nginx-1.24.0.tar.gz

安装配置

进入安装目录 nginx-1.24.0 执行如下命令

./configure \
--prefix=/usr/local/nginx \
--pid-path=/var/run/nginx.pid \
--lock-path=/var/lock/nginx.lock \
--error-log-path=/var/log/nginx/error.log \
--http-log-path=/var/log/nginx/access.log \
--with-http_gzip_static_module \
--http-client-body-temp-path=/var/temp/nginx/client \
--http-proxy-temp-path=/var/temp/nginx/proxy \
--http-fastcgi-temp-path=/var/temp/nginx/fastgi \
--http-uwsgi-temp-path=/var/temp/nginx/uwsgi \
--http-scgi-temp-path=/var/temp/nginx/scgi \
--with-http_stub_status_module \
--with-http_ssl_module \
--with-http_stub_status_module 

编译和安装

上一步配置执行完后，在nginx-1.24.0目录下执行如下命令进行编译和安装

make & make install

启动nginx

进入/usr/local/nginx/sbin目录

检查配置是否正确

./nginx -t

如果出现

nginx: [emerg] mkdir() “/var/temp/nginx/client” failed (2: No such file or directory)

创建对应的目录即可

mkdir -p /var/temp/nginx

# 执行启动
./nginx
#./nginx -c /usr/local/nginx/conf/nginx.conf
# 停止：
./nginx -s stop
# 重新加载：
./nginx -s reload 

浏览器输入ip地址，出现如下页面

nginx配置

反向代理

server {
	listen       18088;                 /*nginx端口*/
	server_name  localhost;
 
	#charset koi8-r;
 
	#access_log  logs/host.access.log  main;
 
	location / {
		proxy_pass http://172.31.0.5:8080;
	}

同端口多路径

http://172.31.0.5:18088/tomcat85 进入http://172.31.0.5:8080 http://172.31.0.5:18088/tomcat80 进入http://172.31.0.5:18083

server {
        listen       18088;        /*nginx端口*/
        server_name  172.31.0.5;   /*访问ip地址*/
 
        location ~ /tomcat85/ {
            proxy_pass http://172.31.0.5:8080;     /*tomcat8.5版本*/
        }
        location ~ /tomcat80/ {
            proxy_pass http://172.31.0.5:18083;    /*tomcat8.5版本*/
        }
}

负载均衡

均衡公平调度

upstream firstserver {
        server 172.31.0.5:8080;
        server 172.31.0.8:18083;
}
 
server {
	listen       18088;
	server_name  172.31.0.5;
 
	location / {
		proxy_pass http://firstserver;
	}
}

权重分配

upstream myserver {
    server 172.31.0.5:8080 weight=5;
    server 172.31.0.8:18083 weight=10; 
}
server {
	listen       18088;
	server_name  172.31.0.5;
 
	location / {
		proxy_pass http://myserver;
	}
}

ip_hash

每个请求按照ip的hash结果分配，只要用户第一次访问哪个ip，之后每次访问都是那个ip，解决session的问题。

upstream myserver {
    ip_hash;
    server 172.31.0.5:8080;
    server 172.31.0.8:18083;
}
server {
	listen       18088;
	server_name  172.31.0.5;
 
	location / {
		proxy_pass http://myserver;
	}
}

热备

upstream firstserver {
    server 172.31.0.5:8080 backup;
    server 172.31.0.8:18083;
}
server {
	listen       18088;
	server_name  172.31.0.5;
 
	location / {
		proxy_pass http://firstserver;
	}
}

前端和静态资源配置

server {
	listen       80;   
	server_name  172.31.0.5;   
 
	location /www/ {     
		root   /data/;   
		index  index.html index.htm;
	}
	location /image/ {    
		root  /data/;     
		autoindex on;     
	}
 
	error_page   500 502 503 504  /50x.html;
	location = /50x.html {
		root   html;
	}
}