Nginx处理静态web页面,tomcat处理动态页面,动静结合。

Nginx+tomcat实现负载均衡1

负载均衡服务器:192.168.0.179

负载均衡主机:192.168.0.179

192.168.0.34

179主机配置如下:

[root@server79 lnmp]# scp tomcat/ jdk/ 192.168.0.34:/usr/local/

[root@server79 conf]# vim nginx.conf

# location ~ \.jsp$ {

       #    proxy_pass   http://127.0.0.1:8080;

       #}

http {

       upstream westos{

       server 192.168.0.34:8080;

       server 192.168.0.179:8080;

       }

   include       mime.types;

server {

listen          80;

server_name     www.westos.org;

location ~ \.jsp$ {

               proxy_pass http://westos;

}

[root@server79 ROOT]# vim test.jsp

server79 time is: <%=new java.util.Date() %>

[root@server79 ROOT]# scp test.jsp  192.168.0.34:/usr/local/tomcat/webapps/ROOT

root@192.168.0.34's password:

test.jsp  

Nginx -t,nginx -s reload

34测试主机:

[root@server34 bin]# vim /etc/profile

export JAVA_HOME=/usr/local/jdk

export CLASSPATH=.:$JAVA_HOME/lib:$JAVA_HOME/jre/lib

export PATH=$PATH:$JAVA_HOME/bin

激活

[root@server34 bin]# source /etc/profile

[root@server34 ROOT]# vim test.jsp

server34 time is: <%=new java.util.Date() %>

[root@server34 bin]# ./startup.sh

Using CATALINA_BASE:   /usr/local/tomcat

Using CATALINA_HOME:   /usr/local/tomcat

Using CATALINA_TMPDIR: /usr/local/tomcat/temp

Using JRE_HOME:        /usr/local/jdk

Using CLASSPATH:       /usr/local/tomcat/bin/bootstrap.jar:/usr/local/tomcat/bin/tomcat-juli.jar

测试:

http://www.westos.org/test.jsp

多次刷新会看到:server79 time is: Tue Apr 22:03:42:52 CST 2014

               Server34 time is: Tue Apr 22:03:42:54 CST 2014

Nginx+tomcat实现负载均衡2

Nginx+tomcat实现负载均衡1已经通过nginx+tomcat实现了负载均衡,但出现一个问题,当刷新页面时,界面会跳动,这样的场景我们不奔溃,客户早都泪奔。为了解决界面跳动的问题,我们用nginx-sticky粘住界面,只有当客户清除历史记录再次刷新时才有可能跳转到另一界面。以下就是实现此功能的过程:

负载均衡服务器:192.168.0.179

测试主机:192.168.0.34

192.168.0.179

下载包: nginx-sticky-module-1.0.tar.gz

nginx-1.4.2.tar.gz

解压

[root@server79 ~]# tar zxf nginx-sticky-module-1.0 nginx-1.4.2.tar.gz

为了安全,删除版本

[root@server79 nginx-1.4.2]# vim src/core/nginx.h  

#define NGINX_VER          "nginx"

注释掉debug,使得编译更纯净

[root@server79 nginx-1.4.2]# vim auto/cc/gcc

#CFLAGS="$CFLAGS -g"

编译,加https加密模块,http的状态模块,nginx-sticky模块

[root@server79nginx-1.4.2]#./configure --prefix=/usr/local/lnmp/nginx/ --with-http_ssl_module--with-http_stub_status_module --add-module=/root/nginx-sticky-module-1.0

make之前,stop掉nginx

[root@server79 nginx-1.4.2]# nginx -s stop

修改nginx的配置文件,加入sticky参数

[root@server79 nginx-1.4.2]# vim /usr/local/lnmp/nginx/conf/nginx.conf

http {

       upstream westos{

       sticky;

       server 192.168.0.34:8080;

       server 192.168.0.179:8080;

       }

检测nginx的配置文件时显示检测失败,需make

[root@server79 nginx-1.4.2]# nginx -t

nginx:[emerg]unknowndirective "sticky" in /usr/local/lnmp/nginx/conf/nginx.conf:20

nginx: configuration file /usr/local/lnmp/nginx/conf/nginx.conf test failed

[root@server79 nginx-1.4.2]# make && make install

再次检测成功

[root@server79 nginx-1.4.2]# nginx -t

nginx: the configuration file /usr/local/lnmp/nginx//conf/nginx.conf syntax is ok

nginx: configuration file /usr/local/lnmp/nginx//conf/nginx.conf test is successful

启动nginx

[root@server79 nginx-1.4.2]# nginx

测试:

[root@server79 bin]# ./startup.sh

[root@server79 bin]# pwd

/usr/local/lnmp/tomcat/bin

[root@server34 bin]# ./startup.sh

http://www.westos.org/test.jsp

出现:server79 time is:Sun Apr 20 09:28:17 CST 2014,当持续刷新时。页面的server79一直没变即成功,要想出现192.168.0.34的测试页面,需清除记录