###更新仓库

apt-get update -y
apt-get install wget -y
#下载nginx和相关软件包

cd /usr/local/src
 wget <a href="ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.33.tar.gz">ftp://ftp.csx.cam.ac.uk/pub/software/programming/pcre/pcre-8.33.tar.gz</a>
 wget <a href="http://zlib.net/zlib-1.2.8.tar.gz">http://zlib.net/zlib-1.2.8.tar.gz</a>
 wget <a href="http://nginx.org/download/nginx-1.4.2.tar.gz">http://nginx.org/download/nginx-1.4.2.tar.gz</a>
 tar xf pcre-8.33.tar.gz
 tar xf zlib-1.2.8.tar.gz
#安装编译环境

 apt-get install build-essential libtool -y
#创建nginx用户

useradd -s /bin/false -r -M -d /nonexistent www
#开始编译安装

/configure --with-pcre=/usr/local/src/pcre-8.33 --with-zlib=/usr/local/src/zlib-1.2.8 --user=www --group=www \
 --with-http_stub_status_module --with-http_ssl_module --with-http_realip_module
 make
 make install
#给文件夹授权

chown -R www:www /usr/local/nginx
#修改配置文件
vim nginx.conf

user www www;
worker_processes 1;
error_log logs/error.log;
pid logs/nginx.pid;
worker_rlimit_nofile 65535;
events {
  use epoll;
  worker_connections 65535;
}
http {
  include mime.types;
  default_type application/octet-stream;
  include /usr/local/nginx/conf/reverse-proxy.conf;
  sendfile on;
  keepalive_timeout 65;
  gzip on;
  client_max_body_size 50m; #缓冲区代理缓冲用户端请求的最大字节数,可以理解为保存到本地再传给用户
  client_body_buffer_size 256k;
  client_header_timeout 3m;
  client_body_timeout 3m;
  send_timeout 3m;
  proxy_connect_timeout 300s; #nginx跟后端服务器连接超时时间(代理连接超时)
  proxy_read_timeout 300s; #连接成功后，后端服务器响应时间(代理接收超时)
  proxy_send_timeout 300s;
  proxy_buffer_size 64k; #设置代理服务器（nginx）保存用户头信息的缓冲区大小
  proxy_buffers 4 32k; #proxy_buffers缓冲区，网页平均在32k以下的话，这样设置
  proxy_busy_buffers_size 64k; #高负荷下缓冲大小（proxy_buffers*2）
  proxy_temp_file_write_size 64k; #设定缓存文件夹大小，大于这个值，将从upstream服务器传递请求，而不缓冲到磁盘
  proxy_ignore_client_abort on; #不允许代理端主动关闭连接
  server {
    listen 80;
    server_name localhost;
    location / {
      root html;
      index index.html index.htm;
    }
    error_page 500 502 503 504 /50x.html;
    location = /50x.html {
      root html;
    }
  }
}

vim /usr/local/nginx/conf/reverse-proxy.conf

server
{
  listen 80;
  server_name xxx123.tk;
  location / {
    proxy_redirect off;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_pass http://192.168.10.38:3000;
  }
  access_log logs/xxx123.tk_access.log;
}
 
server
{
  listen 80;
  server_name xxx456.tk;
  location / {
    proxy_redirect off;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    proxy_pass http://192.168.10.40:80;
  }
  access_log logs/xxx456.tk_access.log;
}

upstream monitor_server {
  server 192.168.0.131:80;
    server 192.168.0.132:80;
}
 
server
{
  listen 80;
  server_name nagios.xxx123.tk;
  location / {
    proxy_redirect off;
    proxy_set_header Host $host;
    proxy_set_header X-Real-IP $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
    proxy_pass http://monitor_server;
  }
  access_log logs/nagios.xxx123.tk_access.log;
}

log_format access '$HTTP_X_REAL_IP - $remote_user [$time_local] "$request" '
'$status $body_bytes_sent "$http_referer" '
'"$http_user_agent" $HTTP_X_Forwarded_For';
 
access_log logs/access.log access;

#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 logs/access.log main;

  proxy_connect_timeout 300s;
  proxy_read_timeout 300s;
  proxy_send_timeout 300s;
  proxy_buffer_size 64k;
  proxy_buffers 4 32k;
  proxy_busy_buffers_size 64k;
  proxy_temp_file_write_size 64k;
  proxy_ignore_client_abort on;