Detailed explanation of tomcat cluster under Nginx reverse proxy in Linux

This article mainly introduces the tomcat cluster under the Nginx reverse proxy in the detailed explanation Linux. The editor thinks it is quite good, so I will share it with you now and give it as a reference. Let’s follow the editor and take a look.

Nginx has the characteristics of reverse proxy (note the difference with forward proxy) and load balancing.

This time Nginx is installed on the linux machine 192.168.1.108. To install Nginx, you must first install the openssl library, gcc, PCRE, zlib library, etc.

Tomcat is installed on the two machines 192.168.1.168 and 192.168.1.178. The client accesses the project content deployed by Tomcat in 192.168.1.168 and 192.168.1.178 by accessing the 192.168.1.108 reverse proxy.

1. Install Nginx under Linux (machine 192.168.1.108)

Install openssl library.

 yum install -y openssl openssl-devel

Need to install gcc: yum install gcc-c++

##Install PCRE yum install -y pcre pcre-devel

Install zlib library yum install -y zlib zlib-devel

Installed under /usr/local/

Extract tar -zxvf nginx-1.13.0.tar.gz

Enter the directory and run./ configure generates make

file

At this time, there is an extra makefile in the directory

Compile make

Installation: make install

After completion, there will be an additional nginx in the local directory

Start nginx

Enter the sbin directory and execute ./nginx

View the startup results

Window access 192.168.1.108 nginx default port is 80

Close ./nginx -s s

top

## After shutting down, it will not be accessible at this time

./nginx -s reload You can reload the

configuration file after startup

Suitable for modification at startup Configuration file

2. Install Tomcat under Linux (192.168.1.168 and 192.168.1.178 machines)

The installation process is very simple. No more telling. Install Tomcat on the other two Linux machines (192.168.1.168 and 192.168.1.178), and deploy any project nginxTest. One content is 1111... and the other is 22222...

At this time, I am accessing a different IP address, and I have not yet configured Nginx as a reverse proxy server.

3. Nginx serves as a reverse proxy server

Mainly configure the contents in nginx.conf

a.

Configure the server

Group, add upstream configuration between http{} nodes. 192.168.1.168:9090 and 192.168.1.178:9191 are the Tomcats of the other two Linux machines (see 2 above)

   upstream lxstest{ 

        server 192.168.1.168:9090;

        server 192.168.1.178:9191;

      }

b. Modify the port number 80 that nginx listens to, and change it to 7777 (you can change it to any number or not).

##

 server {

  listen    7777;

  ......

}

c. 在location{}中，利用proxy_pass配置反向代理地址；此处“http://”不能少，后面的地址要和第一步upstream定义的名称保持一致。(上述的是  lxstest，所以http://lxstest)

 location / { 

      root  html;

      index index.html index.htm;

       proxy_pass http://lxstest; 

    }

上述修改完后，启动 192.168.1.108机器的Nginx

最后访问 192.168.1.108:7777/nginxTest   同一个地址出来不同的页面，说明一会儿访问的是192.168.1.168，一会儿访问的是192.168.1.178

 

http://192.168.1.108:7777 

等同于====  

等同于=====

最后就会找到对应的Tomcat

再找到对应的nginxTest工程.

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