Install Nginx Postgres Centos 7


Install Nginx Postgres Centos 7

Introduction to Nginx and Postgres

Nginx is an open source web server that has been gaining in popularity in recent years due to its reliability, scalability and performance. It is a high-performance alternative to Apache and is commonly used for hosting static websites, running high-traffic web applications, or managing proxy and load balancing services. Postgres, on the other hand, is an enterprise SQL database system that is used to store enterprise data. With Postgres, users have access to advanced features such as transaction processing, table partitioning, and more.

In this tutorial, we will show you how to install and configure Nginx and Postgres on a CentOS 7 system.

Prerequisites

Before beginning this tutorial, you will need access to a CentOS 7 system. The system should be running an up-to-date version of the operating system. Additionally, your system should have enough resources to be able to run both Nginx and Postgres.

Before we get started, you should update the system. You can do this by simply running the following command:

sudo yum update

Once the system has finished updating, you can move on to the next step.

Installing Nginx

Nginx can be installed using the standard package manager on CentOS. To do this, you will first need to add the Nginx repository to the system. You can do this by running the following command:

sudo yum install epel-release

Once the repository has been enabled, you can install Nginx by running the following command:

sudo yum install nginx

Once the installation has completed, you can start Nginx by running the following command:

sudo systemctl start nginx

You can check the status of Nginx by running the following command:

sudo systemctl status nginx

You should see the following output:

Nginx active (running) since Wed 2019-08-21 11:14:30 UTC; 3s ago

Configuring Nginx

Now that Nginx is installed, you can configure it for your setup. To do this, you will first need to create the server block. To do this, create the following file:

sudo vi /etc/nginx/nginx.conf

Next, add the following lines to the file:

server {
listen 80;
server_name example.com;

root /var/www/html;
index index.html;

location / {
try_files $uri $uri/ = 404;
}
}

This will create a simple server block that will serve the files from the /var/www/html directory.

Once you have saved the file, you can test the Nginx configuration by running the following command:

sudo nginx -t

If the configuration is valid, you should see the following output:

nginx: the configuration file /etc/nginx/nginx.conf syntax is ok
nginx: configuration file /etc/nginx/nginx.conf test is successful

Installing Postgres

Postgres can be installed using the package manager on CentOS. To do this, you will first need to add the Postgres repository to the system. You can do this by running the following command:

sudo yum install https://download.postgresql.org/pub/repos/yum/9.4/redhat/rhel-7-x86_64/pgdg-centos94-9.4-3.noarch.rpm

Once the repository has been enabled, you can install Postgres by running the following command:

sudo yum install postgresql94-server postgresql94-contrib

Once the installation has completed, you can initialize the database by running the following command:

sudo /usr/pgsql-9.4/bin/postgresql94-setup initdb

You can then start the Postgres service by running the following command:

sudo systemctl start postgresql-9.4

You can check the status of the Postgres service by running the following command:

sudo systemctl status postgresql-9.4

You should see the following output:

postgresql-9.4.service active (running) since Wed 2019-08-21 11:23:15 UTC; 4s ago

Configuring Postgres

Now that Postgres is installed and running, you can configure it for your setup. To do this, you will need to create a database user. This user will be used to access the database. You can do this by running the following command:

sudo -u postgres psql

This will launch the Postgres interactive shell. From here, you can create a user by running the following command:

CREATE USER username WITH PASSWORD 'password';

Once the user has been created, you can grant the user the necessary permissions by running the following command:

GRANT ALL PRIVILEGES ON DATABASE database_name to username;

Once the user has been granted the necessary privileges, you can exit the interactive shell by running the following command:

q

Conclusion

In this tutorial, we showed you how to install and configure Nginx and Postgres on a CentOS 7 system. We covered how to install the necessary packages, configure the web server and database, and how to create a database user. We hope this tutorial has been helpful and that you have a better understanding of how to install and configure Nginx and Postgres on CentOS 7.

FAQs

Q1: What is Nginx?

A1: Nginx is an open source web server that has been gaining in popularity due to its reliability, scalability and performance.

Q2: What is Postgres?

A2: Postgres is an enterprise SQL database system that is used to store enterprise data.

Q3: How do I install Nginx on CentOS 7?

A3: To install Nginx on CentOS 7, first add the Nginx repository to the system, then run the following command:

sudo yum install nginx

Once the installation has completed, you can start Nginx by running the following command:

sudo systemctl start nginx

Thank you for reading this article. Please read other articles.

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