Principle: Nginx reverse proxy principle

Nginx configuration

Nginx is a high-performance HTTP and reverse proxy service. Many large websites use Nginx for HTTP server hosting.

Install the compilation environment gcc g++

Enter the root directory:

yum -y install make zlib zlib-devel gcc-c++ libtool  openssl openssl-devel

Install PCRE

Let Nginx have the rewrite function when the PCRE function is enabled, download PCRE

wget http://downloads.sourceforge.net/project/pcre/pcre/8.35/pcre-8.35.tar.gz

Unzip the installation package

tar zxvf pcre-8.35.tar.gz

Enter the installation package directory:

cd  pcre-8.35

Compile:

 ./configure

Install:

make && make install

Install Nginx

Back to the root directory:

 cd /root/

wget http://nginx.org/download/nginx-1.16.0.tar.gz

Unzip the installation package:

tar zxvf nginx-1.16.0.tar.gz

Note: The current decompression address must be selected here. After decompression is completed, it will be the directory where Nginx is located. This example is decompressed under the root root directory.

Go to the installation directory:

  cd  nginx-1.16.0

Compile:

 ./configure --with-http_ssl_module

Install:

make && make install

Start and stop Nginx:

Go to the Nginx installation directory:

cd //usr/local/nginx/sbin

Start Nginx:

 ./nginx

Stop Nginx: (do not stop first)

./nginx -s stop

Configure Nginx configuration file

Go to the Nginx configuration file directory:

//usr/local/nginx/conf

Open the Nginx configuration file:

 vim nginx.conf

After modifying the configuration file, go back to the sbin directory and restart Nginx

 ./nginx -s reload

Install and configure Node.js

Download Node.js (I downloaded it in the root directory)

wget https://nodejs.org/dist/v10.11.0/node-v10.11.0-linux-x64.tar.xz

Unzip, also in the root root directory:

tar xvf node-v10.11.0-linux-x64.tar.xz

Create soft links to make node and npm names globally valid

ln -s /root/node-v10.11.0-linux-x64/bin/node /usr/local/bin/node

ln -s /root/node-v10.11.0-linux-x64/bin/npm /usr/local/bin/npm

ln -s /usr/local/bin/node /bin/node

ln -s /usr/local/bin/npm /bin/npm

Verify that Node.js was successfully installed:

node -v

(When the version number appears, the installation is successful)

Install PM2 to manage Node.js services

PM2 is a Node.js process management tool, which can be used to simplify many tedious tasks of node application management, such as performance monitoring, automatic restart, load balancing, etc.

Main features:

Built-in load balancing (use node cluster cluster module, but use all CPUs on the server)
Running in the background (commands like node app.js run directly in the foreground, unstable and easy to break)
0 seconds shutdown reload
Stop erratic processes, avoid infinite loops
console detection

Install PM2 (global installation):

npm install -g pm2

Create a soft connection to make the pm2 command globally effective:

ln -s /root/node-v10.11.0-linux-x64/bin/pm2 /usr/local/bin/pm2

ln -s /usr/local/bin/pm2 /bin/pm2

Package project, publish server

Package front-end Vue files

npm run  build

Copy the file generated by dist to the public directory of the Node project, and then put the Node project on the server, you can choose the FTP tool

Start the Node project

Enter the Node project root directory.

pm2 start app.js --name kanglang-music

Use pm2 list to view the running status of the project

Restart project service

pm2 restart kanglang-music

Reminder: Never forget the firewall

CentOS view port occupancy command, list all ports

netstat -ntlp

CentOS7.9 configuration Nginx reverse proxy + NodeJS deployment online