安装nginx，配置负载均衡和添加状态监测的nginx_upstream_check_module模块

1.安装所需依赖

yum -y install make zlib zlib-devel gcc-c++ libtool  openssl openssl-devel

###2.安装pcre, nginx_upstream_check_module

PCRE 做用是让 Ngnix 支持 Rewrite 功能。 ####**2.1 下载pcre **

wget http://downloads.sourceforge.net/project/pcre/pcre/8.35/pcre-8.35.tar.gz

####**2.2 解压pcre **

tar zxvf pcre-8.35.tar.gz

####2.2 编译和安装

cd pcre-8.35
./configure 
make && make install

####**3.1 下载nginx_upstream_check_module ** nginx_upstream_check_module 的项目在github 上，我是安装了git以后clone下来

yum install -y git
git clone https://github.com/yaoweibin/nginx_upstream_check_module.git

####**4.1 下载nginx ** 试了下最新稳定版1.10.1，却配置不成功，不知道为何，试了1.9.9版本也不行。最后仍是换回了本身熟悉的1.8.1版本。有知道问题的请留言给我吧，谢谢。

wget http://nginx.org/download/nginx-1.8.1.tar.gz
tar zxvf nginx-1.8.1.tar.gz
cd nginx-1.8.1

PCRE ,nginx_upstream_check_module ,nginx 我是放在同一目录下。

在nginx目录先patch 一下

patch -p1 < ../nginx_upstream_check_module/check_1.7.5+.patch

patch选择哪些版本，github上有说明 ####**4.2 配置和安装nginx **

cd nginx-1.8.1
./configure  --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module --with-pcre=../pcre-8.35 --add-module=../nginx_upstream_check_module/
make
make install

设置nginx命令

ln -s /usr/local/nginx/sbin/nginx /usr/local/sbin/nginx

最后在/usr/local/nginx/conf/nginx.conf配置负载均衡和监测功能

worker_processes  1;

error_log  logs/error.log warn;

pid        logs/nginx.pid;

events {
    worker_connections  1024;
    multi_accept on;
    use epoll;

}


http {
    include       /usr/local/nginx/conf/mime.types;
    default_type  application/octet-stream;

    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;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    gzip  on;
    gzip_disable "msie6";
    gzip_proxied any;
    gzip_min_length 1000;
    gzip_comp_level 6;
    gzip_types text/plain text/css application/json application/x-javascript text/xml application/xml application/xml+rss text/javascript;

     upstream juice-api{
      server 192.168.1.121:8080;
      server 192.168.1.132:8080;
      server 192.168.1.120:8080;

      check interval=5000 rise=1 fall=3 timeout=4000;

      #check interval=3000 rise=2 fall=5 timeout=1000 type=http;
      #check_http_send "HEAD / HTTP/1.0\r\n\r\n";
      #check_http_expect_alive http_2xx http_3xx;

     }

    #安全防护模块，触发条件，全部访问ip 限制每秒80个请求
    limit_req_zone $binary_remote_addr zone=one:10m rate=80r/s;

    server {
        listen       8000;
        server_name  localhost;

        charset utf-8;

        #access_log  logs/host.access.log  main;

        location / {
            proxy_pass http://juice-api;
            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_next_upstream error timeout invalid_header http_500 http_502 http_503 http_504;
            limit_req zone=one burst=5 nodelay;
        }

        location /status {
            check_status;
            access_log   off;
            allow 192.168.1.93;
            deny all;
        }
     }
 }

配置太多就不粘贴了

最后启动，查看监测

参考资料： https://github.com/yaoweibin/nginx_upstream_check_module

http://tengine.taobao.org/document_cn/http_upstream_check_cn.html

http://www.runoob.com/linux/nginx-install-setup.html