Nginx 负载均衡器（1+2）

0.准备过程

useradd www
mkdir -p /data/logs/
chown -R www:www /data/logs/
ulimit -SHn 102400

1.安装 pcre

tar zxvf pcre-8.20.tar.gz
cd pcre-8.20
./configure
make && make install

2.安装nginx

./configure --user=www --group=www --prefix=/usr/local/nginx --with-http_stub_status_module --with-http_ssl_module

3.修改nginx配置文件

user    www     www;
worker_processes 2;
pid /usr/local/nginx/logs/nginx.pid;
worker_rlimit_nofile 51200;
events
{
        use epoll;
        worker_connections      51200;
}
http
{
        include           mime.types;
        default_type application/octet-stream;
        charset utf-8;
        server_names_hash_bucket_size 128;
        client_header_buffer_size 32k;
        large_client_header_buffers 4 32k;
        sendfile on;
        tcp_nopush         on;
        keepalive_timeout 60;
        tcp_nodelay on;
        gzip on;
        gzip_min_length 1k;
        gzip_buffers         4 16k;
        gzip_http_version 1.0;
        gzip_comp_level 2;
        gzip_types           text/plain application/x-javascript text/css application/xml;
        gzip_vary on;
        upstream www.free.com {
                ip_hash;
                server 192.168.18.213:80;
                server 192.168.18.214:80;
        }
     #access log
       log_format  access  '$remote_addr - $remote_user [$time_local] "$request" '
                            '$status $body_bytes_sent "$http_referer" '
                            '"$http_user_agent" "$http_x_forwarded_for"';
        access_log /data/logs/access.log  access;
        server {
                listen 80;
                server_name www.free.com;
                location /{
                        proxy_pass      http://www.free.com;
                        proxy_set_header Host   $host;
                        proxy_set_header X-Real-IP      $remote_addr;
                        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
                }
                #开启监控功能
                location /nginx{    
                        access_log off;
                        stub_status on;
                }
        }
}

4.检查配置文件

/usr/local/nginx/sbin/nginx -t

5.启动nginx

/usr/local/nginx/sbin/nginx

6.重启加载配置文件

/usr/local/nginx/sbin/nginx -s reload