配置Nginx+tomcat服务器环境和负载均衡

一、安装软件
1、安装nginx 和JDK
# cd  /usr/ports/www/nginx && make install clean
# cd /usr/ports/java/jdk16 && make install clean
这里会报错
Due to licensing restrictions, certain files must be fetched manually.
 Please download the Update 3 Source from
 http://www.java.net/download/jdk6/6u3/promoted/b05/jdk-6u3-fcs-src-b05-jrl-24_sep_2007.jar
 and the Source Binaries from
 http://www.java.net/download/jdk6/6u3/promoted/b05/jdk-6u3-fcs-bin-b05-jrl-24_sep_2007.jar
 and the Mozilla Headers from
 http://www.java.net/download/jdk6/6u3/promoted/b05/jdk-6u3-fcs-mozilla_headers-b05-unix-24_sep_2007.jar
 .
 Please open http://www.oracle.com/technetwork/java/javase/downloads/index.html
 in a web browser and follow the "Download" link for
 "JDK DST Timezone Update Tool - 1_3_45" to obtain the
 time zone update file, tzupdater-1_3_45-2011n.zip.
 Please download the patchset, bsd-jdk16-patches-4.tar.bz2, from
 http://www.eyesbeyond.com/freebsddom/java/jdk16.html.
 Please place the downloaded file(s) in /usr/ports/distfiles
 and restart the build.
按提示操作
#axel -an 10 http://www.java.net/download/jdk6/6u3/promoted/b05/jdk-6u3-fcs-src-b05-jrl-24_sep_2007.jar
#axel -an 10 http://www.java.net/download/jdk6/6u3/promoted/b05/jdk-6u3-fcs-bin-b05-jrl-24_sep_2007.jar 
#axel -an 10 http://www.java.net/download/jdk6/6u3/promoted/b05/jdk-6u3-fcs-mozilla_headers-b05-unix-24_sep_2007.jar
下面三个文件下载放到上述同样的目录
tzupdater-1_3_34-2010o.zip http://www.oracle.com/technetwork/java/javase/downloads/tzupdater-download-513681.html
bsd-jdk16-patches-4.tar.bz2 ftp://www.kuzbass.ru/pub/freebsd/jdk16/bsd-jdk16-patches-4.tar.bz2
diablo-latte-freebsd7-amd64-1.6.0_07-b02.tar.bz2 http://www.FreeBSDFoundation.org/cgi-bin/download?download=diablo-caffe-freebsd7-amd64-1.6.0_07-b02.tar.bz2
#cd /usr/ports/java/jdk16 && make install clean
2、配置环境
3、安装tomcat
# /usr/ports/www/tomcat6 && make install
#echo 'tomcat60_enable="YES"' >> /etc/rc.conf
#/usr/local/etc/rc.d/tomcat6 start
配置端口
#vim /usr/local/apache-tomcat-6.0/conf/server.xml
omcat的配置可以通过两种方式来配置。
1.通过/conf/server.xml来配置。
2.通过可视化的界面来配置。
下面来介绍server.xml的配置：
按装完Tomcat后它的server.xml的配置内容是这样的：

cOnnectionTimeout="2000"
它表式的是：一个客房端连接到服务器如果没有任何动作它如果超过这个时间那么它就视为无效。
2000表式的是毫秒。
maxThreads="150"
它表示的是同一时间连接到服务器上的同一个页面时的最大连接数。
里面有三个端口配置
                    cOnnectionTimeout="20000"
               redirectPort="8443" />
在  和  之间加入


二、配置
1、nginx.conf添加tomcat反向代理
#vim /usr/local/etc/nginx/nginx.conf
        upstream tomcat_server{ 
                server 127.0.0.1:8180;
        }
2、站点配置文件使用反向代理。
#vim /usr/local/etc/nginx/vhosts/www.example.com.conf
添加
        location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ {
                root  /data/vhosts/www.example.com;
        }
        location ~ .*\.(jsp|do)$ {
                proxy_pass http://tomcat_server;
                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;
        }
#nginx -t

三、测试
#/usr/local/etc/rc.d/nginx reload
#ee /data/vhosts/www.example.com/test.jsp

<%out.println("Hello World! ");%>


#cp ~diege/test.jpg /data/vhosts/www.example.com/
访问测试

0101 Firefox/11.0"

172.17.2.160 - - [25/Apr/2012:14:59:10 +0800] "GET /test.jsp HTTP/1.1" 404 979 "-" "Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko/20100101 Firefox/11.0"

cp /data/vhosts/www.example.com/test.jsp /usr/local/apache-tomcat-6.0/work/Catalina/www.example.com/
不行
cp /data/vhosts/www.example.com/test.jsp  /usr/local/apache-tomcat-6.0/webapps/ROOT/
172.17.2.160 - - [25/Apr/2012:15:14:10 +0800] "GET /test.jsp HTTP/1.1" 200 101 "-" "Mozilla/5.0 (Windows NT 5.1; rv:11.0) Gecko/20100101 Firefox/11.0"
新定义一个端口和站点

四、多个tomcat构建负载均衡
#vim /usr/local/etc/nginx/nginx.conf
        upstream tomcat_server{ 
                server 192.168.1.100:8080;
                                     server 192.168.1.110:8080;
                                     server 192.168.1.120:8080;
        }