nginx做负载tomcat

第一步：
 PCRE 作用是让 Nginx 支持 Rewrite 功能。
其实还需要个 openssl 一般linux上都安装了 所以 此处略去此说明
下载 PCRE 安装包，下载地址： http://downloads.sourceforge.net/project/pcre/pcre/8.35/pcre-8.35.tar.gz
解压安装 
tar zxvf pcre-8.35.tar.gz
编译
./configure
make && make install
查看版本：pcre-config --version
第二步：
下载nginx   http://nginx.org/download/nginx-1.6.2.tar.gz
解压
tar zxvf nginx-1.6.2.tar.gz
编译
./configure --prefix=/home/julong/tomcat/nginx --with-http_stub_status_module --with-http_ssl_module --with-pcre=/home/julong/tomcat/pcre-8.35
make 
make install（nginx 此目录需要提前创建，并非解压的文件夹）

nginx的配置如下:


第三步：验证配置
[julong@localhost nginx]$ ./sbin/nginx -t
nginx: [warn] the "user" directive makes sense only if the master process runs with super-user privileges, ignored in /home/julong/tomcat/nginx/conf/nginx.conf:2
nginx: the configuration file /home/julong/tomcat/nginx/conf/nginx.conf syntax is ok
nginx: configuration file /home/julong/tomcat/nginx/conf/nginx.conf test is successful
第四步：启动nginx
[julong@localhost nginx]$ ./sbin/nginx 
在网页试着访问下http://192.168.1.222:9090/
./sbin/nginx -s reload            # 重新载入配置文件
./sbin/nginx -s reopen            # 重启 Nginx
./sbin/nginx -s stop              # 停止 Nginx

nginx配置如下

#使用的用户linux的用户
user  root julong;
#进程的数量与cpu保持一致
worker_processes  1;
#错误日志保存的位置
error_log  /home/julong/tomcat/nginx/logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
#pid的存放位置
pid        /home/julong/tomcat/nginx/nginx.pid;


events {
    #使用 epoll 事件模型
    use epoll;
    #工作的最大并发数
    worker_connections  1024;
}


http {
    include       mime.types;
    default_type  application/octet-stream;
    #格式化日志
    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;
    #开启 sendfile 调用来快速的响应客户端
    sendfile        on;
    tcp_nopush     on;

    #keepalive_timeout  0;
    keepalive_timeout  65;

    gzip  on;
    #配置监听的服务器
    upstream www.safein.cn {
    #ip_hash：基于源地址哈希，主要目的是会话保持
         ip_hash;
         server 192.168.1.222:8080;
         server 192.168.1.222:8888;
     }
     #定义一个虚拟主机
    server {
    #监听的端口
        listen       9090;
        #监听的服务名定义虚拟主机名，可以使用多个名称，还可以使用正则表达式或通配符。
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   html;
            index  index.html index.htm;
        }
        location ~ /{       
            proxy_pass http://www.safein.cn;
            proxy_set_header HOST $host:$server_port;

           #此方式为访问webservices的方式如果不是webservices项目直接$host
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            }
        #error_page  404              /404.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }


    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}


    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}