# 安装开始：
# 先安装依赖
yum install gcc-c++
yum -y install pcre*
yum -y install openssl*# 下载，可以wget 目前最新1.15.3
cd /opt
wget http://nginx.org/download/nginx-1.12.2.tar.gztar zxf nginx-1.12.2.tar.gz
cd nginx-1.12.2# 指定安装目录 、编译安装
./configure --prefix=/opt/nginx
make && make install# 检查测试
/opt/nginx/sbin/nginx -t

/opt/nginx/sbin/nginx
/opt/nginx/sbin/nginx -s stop
/opt/nginx/sbin/nginx -s quit# 如果是centos7以上，已经注册为系统服务的：systemctl stop nginxsystemctl start nginx

#---------------- 官方文档: -s 参数------------
# stop — fast shutdown
# quit — graceful shutdown
# reload — reloading the configuration file
# reopen — reopening the log files
#----------------------------------------------

ps aux |grep nginx # master worker 至少各一个
netstat -tulnp | grep :80# 如果想要命令方便执行，可将路径加入PATH变量中
vim /etc/profile # 加入 2 行export NGINX_HOME=/opt/nginx
export PATH=$NGINX_HOME/sbin:$PATHsource /etc/profile # 生效

user nginx;
worker_processes auto; # 进程数，一般设置为CPU核数，或者 auto
pid /var/run/nginx.pid; # 记录进程PID文件，可以不启用# Load dynamic modules. See /usr/share/nginx/README.dynamic.
include /usr/share/nginx/modules/*.conf;events {
use epoll; # 使用高效的 epoll 方式
worker_connections 65535; # 单个worker进程同时打开的最大连接数 跟系统的 ulimit -n 有关
}http {
log_format main '$remote_addr - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" "$http_x_forwarded_for"';access_log /var/log/nginx/access.log main;
sendfile on;
tcp_nopush on;
tcp_nodelay on;
keepalive_timeout 65;
types_hash_max_size 2048;
include /etc/nginx/mime.types;
default_type application/octet-stream;
server_tokens off; # 隐藏web出错时的版本号

## 注意：下面仅仅是http{}部分，不是nginx.conf的全部
http {server_tokens  on; include       mime.types;default_type  application/octet-stream;sendfile        on;keepalive_timeout  65;server { # 创建服务listen       80;server_name  wwww.node-6.com;  # 域名## location 匹配URL路径地址，/ 表示匹配所有路径  =开头表示精确匹配  ~区分大小写  ~*不区分大小写（默认不区分）location / {  root   data/www;  # 根目录对应真实文件夹index  index.html index.htm index.jsp;}}server {listen       80;server_name  bbs.node-6.com;location / {root   data/bbs;index  index.html index.htm index.jsp;}}}

    server { # 服务listen       80;server_name  wwww.node-6.com;  # 域名location / { root   data/www;  # 根目录对应真实文件夹index  index.html index.htm index.jsp;}}    server {listen       81;server_name  wwww.node-6.com;location / {root   data/bbs;index  index.html index.htm index.jsp;}}server {listen       82;server_name  wwww.node-6.com;location / {root   data/img;index  index.html index.htm index.jsp;}}

## 不同端口的反向代理  server{}部分server { # 服务listen       80;server_name  wwww.node-6.com;  # 域名location / { proxy_pass  http://127.0.0.1:8080;  # 反向代理本地 tomcatindex  index.html index.htm index.jsp;}}    server {listen       81;server_name  www.node-6.com;  # 域名location / {proxy_pass  http://127.0.0.1:8081;  # 反向代理index  index.html index.htm index.jsp;}}

## 不同域名的反向代理  server{}部分server { # 服务listen       80;server_name  wwww.node-6.com;  # 域名location / { proxy_pass  http://127.0.0.1:8080;  # 反向代理本地 tomcatindex  index.html index.htm index.jsp;}}    server {listen       80;server_name  bbs.node-6.com;  # 域名location / {proxy_pass  http://127.0.0.1:8081;  # 本地另一个 tomcatindex  index.html index.htm index.jsp;}}

## 不同Location的反向代理  server{}部分
## 注意目标地址末尾要有/server { # 服务listen       80;server_name  www.node-6.com;  # 域名location /www {  # 末尾有无/不影响proxy_pass  http://127.0.0.1:8080/;  # 末尾一定要/index  index.html index.htm index.jsp;}location /bbs {proxy_pass  http://127.0.0.1:8081/; index  index.html index.htm index.jsp;}}

## 以下部分全部应在 http{}内：
## 定义多个上游服务器（真实业务）服务器的IP和端口，默认采用轮询机制upstream backServer{server 127.0.0.1:8080;server 192.168.112.5:8080;}server {listen       80;server_name  www.node-6.com;  # 域名location / {proxy_pass  http://backServer/;  # 末尾一定要/index  index.html index.htm index.jsp;}}

    upstream backServer{server 127.0.0.1:8080 weight=1;server 192.168.112.5:8080 weight=3;}

upstream backServer{server 127.0.0.1:8080;server 192.168.112.5:8080;ip_hash;}

## http{}中的两段配置    upstream backServer{server 127.0.0.1:8080;server 127.0.0.1:8081;server 192.168.112.5:8080;}server {listen       80;server_name  www.node-6.com;  # 域名location / {proxy_pass  http://backServer/;  # 末尾一定要/## 故障转移：设置超时时间proxy_connect_timeout 1s;proxy_send_timeout 1s;proxy_read_timeout 1s;index  index.html index.htm index.jsp;}}

server, location, if

实际配置文件示例： nginx/default.conf

分类: Server

标签: nginx, epoll, 反向代理, 负载均衡, 故障转移, proxy_pass, location, tomcat, url重写