Nginx Multi Domain Centos 7

Introduction to Nginx

Nginx is an open source, high performance web server software written in C language, designed to be deployed on Linux and Unix-like operating systems. It differs from other web servers such as Apache or IIS in that it supports multiple domains on the same web server instance and is also capable of serving static content very efficiently. Combined with its low system resource requirements and its scalability, Nginx is the perfect choice for serving multiple domains on your Centos 7 server.

Setting Up The Nginx Server

Before you begin, you need to make sure that your Centos 7 server is up and running, and that it has a static IP address. You also need to have access to the root user via SSH so that you can install Nginx. Once you have verified all of these prerequisites, you can move on to the installation of Nginx.

The first thing you need to do is to add the Nginx repository to your system. This can be done using the yum command, which is a package manager for CentOS. Simply run the command below to add the Nginx repository to your system:

yum install epel-release

Once the repository is added, you can install Nginx by running the command below:

yum -y install nginx

Once the installation is complete, you can start the Nginx service by running the command below:

sudo systemctl start nginx

You can verify that the service is running by running the command below:

sudo systemctl status nginx

Configuring Multiple Domains

Now that the Nginx service is running, you can begin configuring multiple domains on your system. The configuration of multiple domains in Nginx is done using the configuration files located in the “/etc/nginx/conf.d” folder. You need to create a separate file for each domain that you want to configure. You can use the default configuration file “default.conf” as a starting point, and then edit it to fit your needs.

For each domain that you want to configure, you need to include the following directives in the configuration file:

• server_name – The domain name that you are configuring.
• root – The document root of the domain.
• index – The index file that will be served when a directory is requested.
• location – The location block that will handle the requests for the domain.

Once you have completed the configuration, you need to reload the Nginx service in order for the changes to take effect. You can do this by running the command below:

sudo systemctl reload nginx

Configuring SSL For Your Domains

Once you have configured the multiple domains, you can begin configuring SSL for them. Setting up SSL for your domains is a crucial step in ensuring that the data being transmitted between your server and the client is secure. Nginx makes this process easy with the use of Let’s Encrypt. Let’s Encrypt is a free, open-source HTTPS certificate authority, helping to make secure communication over the internet a breeze to set up.

In order to use Let’s Encrypt with Nginx, you need to first install the Let’s Encrypt client ‘certbot’. You can do this by running the command below:

sudo yum -y install certbot

Once the installation is complete, you can use the ‘certbot’ command to request a certificate for your domains. To do this, simply run the command below:

certbot –nginx -d example.com -d www.example.com

Once the certificate is issued, it will be automatically added to the Nginx configuration and the Nginx service will need to be reloaded for the changes to take effect. This can be done using the command below:

sudo systemctl reload nginx

Troubleshooting Issues

If you encounter any issues while setting up or configuring your Nginx server for multiple domains, you should first check the Nginx error log. The Nginx error log can be found in the “/var/log/nginx/error.log” file on your system. This file is constantly updated with any errors that Nginx encounters, so if you encounter any issues, you should check there first.

You can also check the Nginx access log for any errors. The Nginx access log is located in the “/var/log/nginx/access.log” file on your system. This log is constantly updated with any requests that are sent to your server, so if you find any errors in this log, you should investigate further.

Conclusion

In this article, we covered how to set up and configure Nginx for multiple domains on a Centos 7 server. We discussed how to install Nginx, how to configure multiple domains, and how to set up SSL for your domains. We also discussed the importance of checking the Nginx access and error logs, and how to troubleshoot any issues that may arise.

FAQs

• What is Nginx?

  Nginx is an open-source, high-performance web server written in C language, designed to be deployed on Linux and Unix-like operating systems.

• How do I install Nginx?

  You can install Nginx by running the command ‘yum install epel-release’ followed by ‘yum -y install nginx’.

• Where do I configure multiple domains in Nginx?

  The configuration of multiple domains in Nginx is done using the configuration files located in the “/etc/nginx/conf.d” folder.

• How do I configure SSL for my domains?

  You can use Let’s Encrypt with Nginx to easily configure SSL certificates for your domains. Simply install the ‘certbot’ client and then use it to request a certificate for your domains.

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