i add openvpn access server to droplet ,i need to open port like 1817and then forword to client vpn port to connect with service on home pc over internet such as portmap.io work i need to make rules maps and connect t...

One of my clients manufactures emergency lighting systems for commercial buildings. About 8 years ago I designed firmware for them that includes the capability to email automated test results and problem alerts to cus...

here is my problem, when i do login as root after password reset, then it told me to login with the password and i can login, but after change the new password it auto close my PUTTY. Please help me to fix this problem.

Docker is a great tool for automating the deployment of Linux applications inside software containers, but to take full advantage of its potential each component of an application should run in its own individual cont...

In this guide, we will show you how to set up a self-signed SSL certificate for use with an Apache web server on Ubuntu 18.04.

SSH-key-based authentication provides a more secure alternative to password-based authentication. In this tutorial we’ll learn how to set up SSH key-based authentication on an Ubuntu 18.04 installation.

NFS, or Network File System, is a distributed file system protocol that allows you to mount remote directories on your server. This tutorial goes over how to install all the components needed to run NFS and also walks...

Python is a flexible and versatile programming language that can be leveraged for many use cases, with strengths in scripting, automation, data analysis, machine learning, and back-end development. This tutorial will ...

This tutorial will get your Ubuntu 18.04 server set up with a Python 3 programming environment. Programming on a server has many advantages and supports collaboration across development projects.

Interested in Node.js but not sure where to start with Docker? This tutorial will walk you through the first step: building an image for a Node.js application and creating a container from it. We will also walk you th...

An important part of managing server configuration and infrastructure includes maintaining an easy way to look up network interfaces and IP addresses by name, by setting up a proper Domain Name System (DNS). Using ful...

The Apache HTTP server is the most widely-used web server in the world. It provides many powerful features, including dynamically loadable modules, robust media support, and extensive integration with other popular so...

MariaDB is an open-source database management system, commonly used as an alternative for the MySQL portion of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It is intended to be a drop-in replacement...

MySQL is an open-source database management system, commonly installed as part of the popular LAMP (Linux, Apache, MySQL, PHP/Python/Perl) stack. It uses a relational database and SQL (Structured Query Language) to ma...

This tutorial provides instructions on how to install the PostgreSQL database software on an Ubuntu 18.04 server. It also includes instructions for basic database management.

In this guide, we will show you how to set up a self-signed SSL certificate for use with an Nginx web server on an Ubuntu 18.04 server.

Database monitoring is the continuous process of systematically tracking various metrics that show how the database is performing. By observing the performance data, you can gain valuable insights and identify possibl...

FTP, short for File Transfer Protocol, is a network protocol that was once widely used for moving files between a client and server. It has since been replaced by faster, more secure, and more convenient ways of deliv...

I am noticing that I cannot access my dashboard unless I reboot the ubuntu server, but I get the error System information disabled due to load higher than 2.0I am not finding much to resolve it. I need this resolved a...

Saving debug log to /var/log/letsencrypt/letsencrypt.logPlugins selected: Authenticator webroot, Installer NoneObtaining a new certificatePerforming the following challenges:http-01 challenge for bbb.danishkada.com Us...