Nginx + Tomcat server Load balancer Configuration

Nginx + Tomcat is currently the mainstream Java Web architecture. How can we make nginx + Tomcat work at the same time? Can we also say how to use nginx to reverse proxy Tomcat backend balancing? Let's take a look at it in detail.

Nginx + Tomcat is currently the mainstream Java Web architecture. How can we make nginx + Tomcat work at the same time? Can we also say how to use nginx to reverse proxy Tomcat backend balancing? Directly install the configuration as follows:

1. install Java JDK:

 
 

  
  
# Download the appropriate JDK software package, and then unzip the installation, here I package name: 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.
  
  
 
  
  
# Configure the environment variable so that JDK can be referenced anywhere. The configuration is as follows:
  
  
 
  
  
# Add the following statement to the end of VI/etc/profile:
  
  
 
  
  
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 # make the environment variable take effect immediately
  
  
 
  
  
# JAVA -- version # Check the Java version. If JDK 1.7.0 _ 25 is displayed, the Java JDK is successfully installed.
 
 

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
  
  
 
  
  
# After nginx is installed, run the command:/usr/local/nginx/sbin/nginx-t to test OK, which indicates that nginx is successfully installed.
  
  
 
  
  
/Usr/local/nginx/sbin/nginx press enter to start nginx. You can access http: // ip/to view the default nginx page.
 
 

3. tomcat installation:

 
 

  
  
# Download Tomcat 6.0.30 or another version from the official website:
  
  
 
  
  
Apache-tomcat-6.0.30.tar.gz CD/usr/src & tar xzf
  
  
 
  
  
# Directly decompress the package and run the package. Copy two Tomcat servers and name them tomcat1 tomcat2.
  
  
 
  
  
Mv apache-Tomcat-6.0.30/usr/local/tomcat1
  
  
 
  
  
CP/usr/local/tomcat1/usr/local/tomcat2-R
  
  
 
  
  
# Modify the tomcat1 and tomcat2 ports respectively. The three ports must be modified as follows:
  
  
 
  
  
Shutdown port: 8005 is mainly used to start and close.
  
  
 
  
  
AJP port: 8009 is mainly used for AJP balancing (usually used for Apache and tomcat integration)
  
  
 
  
  
Http port: 8080 can be directly accessed through web pages (nginx + tomcata integration)
  
  
 
  
  
# Note * If the three port numbers of tomcat1 are 8005 8009 8080, port 8006 + 1, that is, port 8010 8081
  
  
 
  
  
# On a server, the ports cannot be repeated; otherwise, an error is reported.
  
  
 
  
  
# After modifying the port, start two Tomcat servers and run the following command:
  
  
 
  
  
# How to prompt whether the file does not exist or the permission is insufficient? The bin directory of Tomcat needs to grant the execution permission to the sh file: chmod o + x *. Sh
  
  
 
  
  
/Usr/local/tomcat1/bin/startup. Sh
  
  
 
  
  
/Usr/local/tomcat2/bin/startup. Sh
  
  
 
  
  
# After the instance is started, use netstat-tnl to view the six ports, that is, tomcat1 tomcat2 is successfully started. You can use http: // ip: 8080 http: // ip: 8081 to access the default Tomcat page.
 
 

# If you need to modify the Tomcat release directory as your own directory, you need to make the following adjustments to create two release directories:

 
 

  
  
mkdir -p /usr/webapps/{www1,www2} 
 
 

Edit VI/usr/local/tomcat1/CONF/server. xml and add the following content to the last line

 
 

  
  
<Context path="" docBase="/usr/webapps/www1" reloadable="false"/> 
 
 

2. Edit VI/usr/local/tomcat2/CONF/server. xml and add the following content to the line before the last

 
 

  
  
<Context path="" docBase="/usr/webapps/www2" reloadable="false"/> 
 
 

3. The release directory of tomcat1 is as follows:

 
 

  
  
 
  
<body> 
  
  
 
  
<%=new java.util.Date()%> 
  
  
</body> 
  
  
 
 

4. tomcat2 release directory content:

 
 

  
  
 
  
<body> 
  
  
 
  
<%=new java.util.Date()%> 
  
  
</body> 
  
  
 
 

Access http: // ip: 8080 and 8081 to view the test content.

5. nginx + Tomcat integration:

The integration mainly involves modifying the nginx. conf configuration and providing a complete nginx. conf online configuration. Some parameters can be modified as needed:

 
 

  
  
User WWW;
  
  
Worker_processes 8;
  
  
Pid/usr/local/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 4 K;
  
  
Large_client_header_buffers 4 32 K;
  
  
Client_max_body_size 300 m;
  
  
Sendfile on;
  
  
Tcp_nopush on;
  
  
 
  
  
Keepalive_timeout 60;
  
  
 
  
  
Tcp_nodelay on;
  
  
Client_body_buffer_size 512 K;
  
  
 
  
  
Proxy_connect_timeout 5;
  
  
Proxy_read_timeout 60;
  
  
Proxy_send_timeout 5;
  
  
Proxy_buffer_size 16 K;
  
  
Proxy_buffers 4 64 K;
  
  
Proxy_busy_buffers_size 128 K;
  
  
Proxy_temp_file_write_size 128 K;
  
  
 
  
  
Gzip on;
  
  
Gzip_min_length 1 K;
  
  
Gzip_buffers 4 16 K;
  
  
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_bytes_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 = 30 s;
  
  
Server 127.0.0.1: 8081 Weight = 1 max_fails = 2 fail_timeout = 30 s;
  
  
}
  
  
 
  
  
#### Chinaapp.sinaapp.com
  
  
Server {
  
  
Listen 80;
  
  
SERVER_NAME chinaapp.sinaapp.com;
  
  
Index index. jsp index.html index.htm;
  
  
# Release directory/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;
  
  
}
  
  
 
  
  
}
  
  
 
  
  
}
 
 

# Note * The web_app defined in the server segment proxy_pass must be consistent with the web_app defined in upstream. Otherwise, the server cannot find a balance.

# In the above configuration, nginx + Tomcat Reverse Proxy Server Load balancer configuration is complete. If you want to perform dynamic/static separation, you only need to add the following configuration in nginx.

 
 

  
  
# Configure nginx dynamic/static Separation
  
  
 
  
  
Location ~ . * \. (HTML | HTM | GIF | JPG | JPEG | BMP | PNG | ICO | TXT | JS | CSS) $
  
  
 
  
  
{
  
  
 
  
  
Root/data/WWW;
  
  
 
  
  
# Expires defines that the user's browser cache time is 3 days. If the static page is not updated frequently, you can set a longer period, which can save bandwidth and relieve server pressure.
  
  
 
  
  
Expires 3D;
  
  
 
  
  
}
 
 

Nginx + Tomcat server Load balancer Configuration