Steven J. Vaughan-Nichols on Linode Guides & Tutorials

What is Cloud-Native Computing?

Fri, 23 Jun 2023 00:00:00 +0000

Cloud-native computing is an application development and delivery paradigm. It encompasses several technologies and architectural patterns, including open-source Linux containers, Kubernetes, and microservices. Cloud-native computing emphasizes scalability, automation, efficiency, and simplicity in all domains of the application development and deployment life-cycle —including team organization. With this approach, IT professionals create applications that can be deployed on-demand to the cloud, quickly and easily; saving on your computing resource costs.

What Are the Best Open Source Content Management Systems?

Fri, 25 Mar 2022 00:00:00 +0000

There are dozens of Linux distributions, but only one Linux. There are over a dozen open-source web servers, but only one Apache. When it comes to open-source Content Management Systems (CMS), however, there are more than a hundred choices. This guide includes a line up of the most popular CMSs, a list of features every top-rated CMS provides, and suggestions on how to choose the best one for you.

Monitoring Docker Containers: Benefits, Best Practices, and Must-Have Tools

Fri, 04 Mar 2022 00:00:00 +0000

Eight years ago containers were a known technology, but with little public adoption. Then, Solomon Hykes created Docker, a container technology, making containers much easier to use. Today, containers rule the IT world. Gartner predicts 70% of organizations will run containerized applications by 2023.

Open Source vs. Closed Source: What’s the Difference?

Fri, 21 Jan 2022 00:00:00 +0000

What is Open Source?

In the beginning, back when Remington Rand’s Univac 1, the DEC PDP-1, and IBM System 360 ruled the computing world, all software was open-source software. This means that anyone could take the source code and modify and improve it to meet their own needs. Early software was created by government agencies and schools. In the interest of getting programs up and running they’d share their source code either with programmer to programmer swaps or via user groups such as IBM Share and DEC DECUS.

Installing and Configuring WireGuard on CentOS 8

Fri, 21 May 2021 00:00:00 +0000

What is WireGuard?

WireGuard® is a next-generation security-focused Virtual Private Network (VPN) which can easily be deployed on low-end devices, like Raspberry Pi, to high-end servers.

Linux System Monitoring Fundamentals

Fri, 19 Feb 2021 00:00:00 +0000

The only way to know that your Linux-server-based applications and services are running well is to measure what’s going on in the server and its connectivity status. Linux system monitoring tools reassure you when things are working right, and help you recognize odd behavior, performance anomalies, and their source when the server misbehaves. Once you’ve mastered these dedicated applications – most of which are built into the operating system – you’ll be well on your way to Linux system administrator expertise.

Using Monitorix for System Monitoring

Fri, 19 Feb 2021 00:00:00 +0000

Monitorix is a free, open-source system monitoring tool that keeps track of several Linux services and system resources. This Linux system monitoring tool is composed of two programs. The first, monitorix, is a system data logging daemon written in Perl. The second, its web interface, uses the CGI script, monitorix.cgi.

Using Nethogs to Monitor Network Usage

Fri, 19 Feb 2021 00:00:00 +0000

Nethogs is a free, open-source program used to track network usage. It extends the net top tool to track bandwidth by process. For example, net top may show that outbound traffic increased on a Linux server by protocol or subnet. But nethogs makes it easier for Linux administrators to identify which process is generating the usage spikes.

Using the System Activity Reporter (sar)

Fri, 19 Feb 2021 00:00:00 +0000

The System Activity Reporter (Sar) is a utility program for analyzing Linux system performance. Sar is a do-it-all monitoring tool that is part of the Sysstat system resource utilities package. Linux administrators should learn sar for its wide range of utility features. It measures CPU activity; memory/paging; interrupts; device load; network; process and thread allocation; and swap space utilization. Data is gathered in the /proc filesystem. By default, sar collects data once for every 10-minute mark of each hour. This guide shows you how to install and configure sar on your Debian or Ubuntu Linux system. You also learn several useful commands to get you started collecting data about your Linux system’s activity.

Use vmstat to Monitor System Performance

Wed, 13 Oct 2010 00:00:00 +0000