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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 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 libraryyum install -y zlib zlib-devel
##Download nginx: wget
http://nginx.org/download /nginx-1.13.0.tar.gzInstalled under /usr/local/
Unzip tar -zxvf nginx-1.13.0.tar.gz
Enter the directory and run ./configure to generate make
fileAt 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 to execute. /nginxView startup results
Window access 192.168.1.108 nginx default port is 80Close./nginx -s stop
##After closing, the corresponding data cannot be accessed at this time ./nginx -s reload can reload theconfiguration file after startup Suitable for modifying the configuration file during startup
2. Install Tomcat under Linux (192.168.1.168 and 192.168.1.178 machines)
The installation process is very simple and I won’t go into details. 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 of nginx.confa.
Configure servergroup, add upstream configuration between http{} nodes.
192.168.1.168:9090 and 192.168.1.178:9191 are Tomcat 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. In location{}, use proxy_pass to configure the reverse proxy address; "http://" cannot be missing here, and the subsequent address must be consistent with the name defined by upstream in the first step. (The above is lxstest, so http://lxstest) location / { root html; index index.html index.htm; proxy_pass http://lxstest; } After the above modifications, start Nginx of 192.168.1.108 machine Last visit192.168.1.108:7777/nginxTest Different pages appear for the same address, indicating that the one visited is 192.168.1.168, and the one visited192.168 .1.178 ##http://192.168.1.108:7777 nginxTest project. Detailed explanation of innodb_index_stats when importing data
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