Nginx+tomcat load Balancing configuration method under Linux _nginx

Nginx+tomcat is the current mainstream Java Web architecture, how to let nginx+tomcat work at the same time, can also say how to use Nginx to reverse proxy tomcat back-end equalization? The direct installation configuration is as follows:

1. JAVA JDK Installation:

#下载相应的jdk软件包, and then unpack the installation, I have the package name here: jdk-7u25-linux-x64.tar.gz  
  
tar-xzf jdk-7u25-linux-x64.tar.gz; mkdir-p/usr/java/; MV jdk1.7.0_25//usr/java/.  
  
#然后配置环境变量, so that you can refer to JDK anywhere, as follows:  
  
#vi/etc/profile The last face add the following statement:  
  
export java_home=/usr/java/jdk1.7.0_25  
  
Export classpath= $CLASSPATH: $JAVA _home/lib: $JAVA _home/jre/lib 
  
export path= $JAVA _home/bin: $JAVA _home/jre/bin: $PATH: $HOMR/bin 
  
#source/etc/profile  #使环境变量马上生效  
  
#java--version  

2, Nginx Installation:

wget http://nginx.org/download/nginx-1.2.6.tar.gz  
  
useradd www  
  
tar zxvf nginx-1.2.6.tar.gz  
  
CD nginx-1.2.6/  
  
./configure--user=www--group=www--prefix=/usr/local/nginx 
 \--with-http_stub_status_module --with-http_ssl_module make  
  
&& make install 
  
#Nginx安装完毕, and then use the command:/usr/local/nginx/sbin/nginx-t test OK, Represents Nginx installation success.  
  

3, Tomcat installation:

#官方网站下载tomcat 6.0.30 or other version:  
  
cd/usr/src && tar xzf apache-tomcat-6.0.30.tar.gz  
  
#直接解压就可以使用, decompression complete execution, Simultaneously copies two Tomcat, named TOMCAT1 tomcat2  
  
mv APACHE-TOMCAT-6.0.30/USR/LOCAL/TOMCAT1 
  
cp/usr/local/tomcat1/usr/local /tomcat2-r  
  
#分别修改tomcat1和tomcat2 Port, there are three ports that need to be modified, as follows:  
  
shutdown Port: 8005 main responsible for startup shutdown.  
  
AJP Port: 8009 is primarily responsible for using AJP equalization (commonly used for Apache and Tomcat consolidation)  
  
HTTP ports: 8080 can be accessed directly via Web pages (nginx+tomcata integration)  
  
#注 * If the TOMCAT1 three ports are: 8005 8009 8080, then TOMCAT2 port on this basis are +1, that is: 8006 8010 8081  
  
#一台服务器上, the port can not be repeated, otherwise it will be an error.  
  
#修改完端口后, and then start two Tomcat, the launch command is:  
  
#如何提示没有这个文件或者权限不足, requires Tomcat's Bin directory to give execution permission to the sh file: chmod o+x  *.sh  
  
/ usr/local/tomcat1/bin/startup.sh  
  
/usr/local/tomcat2/bin/startup.sh  
  

#如果需要修改tomcat发布目录为自己制定的目录, you need to make the following adjustments to create two publishing directories:

Copy Code code as follows:

Mkdir-p/USR/WEBAPPS/{WWW1,WWW2}

Edit Vi/usr/local/tomcat1/conf/server.xml The last </Host> previous line add the content:

Copy Code code as follows:

<context path= "" docbase= "/USR/WEBAPPS/WWW1" reloadable= "false"/>

2. Edit Vi/usr/local/tomcat2/conf/server.xml The last </Host> the previous line add the content:

Copy Code code as follows:

<context path= "" docbase= "/USR/WEBAPPS/WWW2" reloadable= "false"/>

3.TOMCAT1 Publish Directory content:

4.tomcat2 Publish Directory content:

Then visit http://ip:8080, 8081 to view the test content.

5, Nginx+tomcat Integration:

Integration is mainly to modify the nginx.conf configuration, to a complete nginx.conf online configuration, some of the parameters can be modified according to the actual requirements:

User www www.  
Worker_processes 8;  
Pid/usr/local/nginx/nginx.pid;  
Worker_rlimit_nofile 102400;  
events {use Epoll;  
Worker_connections 102400;  
 } http {include mime.types;  
 Default_type Application/octet-stream;  
 Fastcgi_intercept_errors on;  
 CharSet Utf-8;  
 Server_names_hash_bucket_size 128;  
 Client_header_buffer_size 4k;  
 Large_client_header_buffers 4 32k;  
 Client_max_body_size 300m;  
 Sendfile on;  
   
 Tcp_nopush on;  
   
 Keepalive_timeout 60;  
 Tcp_nodelay on;  
  
 Client_body_buffer_size 512k;  
 Proxy_connect_timeout 5;  
 Proxy_read_timeout 60;  
 Proxy_send_timeout 5;  
 Proxy_buffer_size 16k;  
 Proxy_buffers 4 64k;  
 Proxy_busy_buffers_size 128k;  
   
 Proxy_temp_file_write_size 128k;  
 gzip on;  
 Gzip_min_length 1k;  
 Gzip_buffers 4 16k;  
 Gzip_http_version 1.1;  
 Gzip_comp_level 2;  
 Gzip_types text/plain application/x-javascript text/css application/xml;  
   
Gzip_vary on; # # #2012 -12-19 Change Nginx logs Log_format main ' $http _x_forwarded_for-$remote _user [$time _local] "$request" "$status $body _byte  
         
S_sent "$http _referer" "$http _user_agent" $request _time $remote _addr ';  
 Upstream Web_app {server 127.0.0.1:8080 weight=1 max_fails=2 fail_timeout=30s;  
Server 127.0.0.1:8081 weight=1 max_fails=2 fail_timeout=30s;  
  } ### #chinaapp. sinaapp.com server {Listen 80;  
  server_name chinaapp.sinaapp.com;  
  Index index.jsp index.html index.htm;  
    
  #发布目录/data/www root/data/www;  
  Location/{proxy_next_upstream http_502 http_504 error timeout invalid_header;  
  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_pass Http://web_app;  
  Expires 3d;  }  
   
 }  
  
}

#注 * Server segment Proxy_pass defined Web_app need to be consistent with the Web_app defined in upstream, otherwise the server cannot find a balance.

#如上配置, Nginx+tomcat reverse proxy load balanced configuration is complete, if you want to do static and dynamic separation, just add the following configuration in Nginx OK.

#配置Nginx动静分离  
  
Location ~ *\. ( HTML|HTM|GIF|JPG|JPEG|BMP|PNG|ICO|TXT|JS|CSS) $  
  
{  
  
root/data/www;  
  
#expires定义用户浏览器缓存的时间为3天, if the static page is not often updated, can be set longer, this can save bandwidth and ease the pressure of the server  
  
expires   3d;  
  

This article comes from "Wu Guangko-Jing Feng Linux operation training" blog