"NGINX is open-source software for web serving, reverse proxying, caching, load balancing, media streaming, and more. It started out as a web server designed for maximum performance and stability. In addition to its HTTP server capabilities, NGINX can also function as a proxy server for email (IMAP, POP3, and SMTP) and a reverse proxy and load balancer for HTTP, TCP, and UDP servers."
- Linux centos server
Log in to your server using ssh
You'll be asked to input your password.
Installing Nginx on Centos
Nginx packages can be gotten from EPEL repositories:
sudo yum install epel-release
sudo yum install nginx
Output should look like:
Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Importing GPG key 0x352C64E5: Userid : "Fedora EPEL (7) <firstname.lastname@example.org>" Fingerprint: 91e9 7d7c 4a5e 96f1 7f3e 888f 6a2f aea2 352c 64e5 Package : epel-release-7-9.noarch (@extras) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-EPEL-7 Is this ok [y/N]:
Press y and enter
Upon completion, start Nginx and check it's status using:
sudo systemctl enable nginx sudo systemctl start nginx sudo systemctl status nginx
If all goes well, you should see this:
● nginx.service - The nginx HTTP and reverse proxy server Loaded: loaded (/usr/lib/systemd/system/nginx.service; enabled; vendor preset: disabled) Active: active (running) since Mon 2018-03-12 16:12:48 UTC; 2s ago Process: 1677 ExecStart=/usr/sbin/nginx (code=exited, status=0/SUCCESS) Process: 1675 ExecStartPre=/usr/sbin/nginx -t (code=exited, status=0/SUCCESS) Process: 1673 ExecStartPre=/usr/bin/rm -f /run/nginx.pid (code=exited, status=0/SUCCESS) Main PID: 1680 (nginx) CGroup: /system.slice/nginx.service ├─1680 nginx: master process /usr/sbin/nginx └─1681 nginx: worker process
Open HTTP(80) and HTTPS(433) if you are behind a firewall with these commands:
sudo firewall-cmd --permanent --zone=public --add-service=http sudo firewall-cmd --permanent --zone=public --add-service=https sudo firewall-cmd --reload
Open http://YOUR_IP in your browser of choice, you should see an Nginx homepage displayed. Congratulation!!!
Create a New User Account with sudo Privileges
For security reasons, it is advisable not to use the root user to run commands but to create a new user with sudo privileges:
- Replace username with your username with Sudo privileges.
Set the User Password
You should get the output:
output Changing password for user username. New password: Retype new password: passwd: all authentication tokens updated successfully.
Add User to the sudo Group
usermod -aG wheel username
Switch to Newly Created User
su - username
Then list \root directory content:
sudo ls -l /root
You'll see a banner message the first time you sudo from this account:
output We trust you have received the usual lecture from the local System Administrator. It usually boils down to these three things: #1) Respect the privacy of others. #2) Think before you type. #3) With great power comes great responsibility. [sudo] password for username:
Serve Multiple Applications
Log in to the Server Using Your username with Root Privileges
Our directory structure would look like this:
To avoid any permission issues, let us change ownership to our username with sudo privileges:
Copy and paste the following lines:
Create a Server Block
Server blocks are stored in the /etc/nginx/conf.d directory and must end with .conf
Copy and paste the following lines into the file, remember to replace the server name with your value:
Save the file and check that configuration is right:
sudo nginx -t
sudo systemctl restart nginx
Then visit your server name:
NB: This must be a configured DNS to your server else just use the server IP address.
Configure Nginx for Node JS Application
Edit the application .conf file to look like this:
NB: You can get the internal_server_ip by running
hostname -I on the terminal. See https://www.linuxtrainingacademy.com/determine-public-ip-address-command-line-curl/ for more.
sudo systemctl restart nginx
And visit your server name or IP to verify that your application is served.
You can follow a similar process to serve your python application in the created directory.
This post is inspired by https://www.linuxtrainingacademy.com/determine-public-ip-address-command-line-curl/
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