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today's howtos

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  • Jonathan McDowell: Trying to understand Kubernetes networking

    I previously built a single node Kubernetes cluster as a test environment to learn more about it. The first thing I want to try to understand is its networking. In particular the IP addresses that are listed are all 10.* and my host’s network is a 192.168/24. I understand each pod gets its own virtual ethernet interface and associated IP address, and these are generally private within the cluster (and firewalled out other than for exposed services). What does that actually look like?

  • [Older] Command separators in Linux

    Commands can also be combined in such a way that they are executed in a particular sequence.

  • [Older] Command substitution - Linux Concept

    On a keyboard, there is one interesting key, the backward quote, `. This key is normally situated below the Esc key. If we place text between two successive backquotes, then echo will execute those as commands instead of processing them as plain text.

  • [Older] Pattern matching in vi Editor - Linux Concept

    To learn about pattern matching, we will ensure that the pattern that we will search for is highlighted when the pattern searched for is found.

  • [Older] Redirection Operators in Linux - Linux Concept

    You will learn the very useful concept of I/O redirection in this article.

  • How to Remove Package from Laravel (Composer) – TecAdmin

    Composer is the most popular way for managing packages in PHP bases applications. Laravel also relies over composer for installing, upgrading and removing packages. Composer 2.0 is the latest version available for installation. This is more powerful, fast and fully compatible with older versions.

  • Change Authentication Method For MySQL Root User In Ubuntu

    This guide explains why and how to change authentication method for MySQL root user to Caching SHA-2 Pluggable Authentication or Native Pluggable Authentication method in Ubuntu.

    Even if you have setup password for MySQL root user, you still can't authenticate with the database server as root user with a password. Because, the MySQL root user is set to authenticate using the auth_socket plugin by default instead of the password in Ubuntu systems running MySQL 5.7 and newer versions.

  • Install Open Classifieds on Debian 9 | LinuxCloudVPS Blog

    Open Classifieds is a free, powerful, open-source web platform that allows users to easily create and build classifieds, advertisement, and listings sites. Let’s begin with the installation. In this tutorial, we will show you how to install Open Classifieds on your Debian 9 server.

  • [Older] How To Harden OpenSSH on Ubuntu 20.04

    OpenSSH is one of the most popular tools that uses SSH protocol for secure system administration, file transfers, and other communication across the Internet. It is free and used by system administrators to manage remote systems. OpenSSH runs on port 22 and it is the first target of a hacker. So you may need to harden your OpenSSH server to protect it from hackers.

  • How To Install Nagios 4 and Monitor Your Servers on Ubuntu 20.04 | LinuxCloudVPS Blog

    Nagios is a free, open-source and powerful monitoring tool that helps you to monitor your entire IT infrastructure, servers, services and applications from the central location. It is based on client-server architecture. So you will need to install the Nagios agent on the client system and add it to the Nagios server for monitoring. If you are looking for a monitoring solution then Nagios is an essential tool for any production server environment.

More in Tux Machines

digiKam 7.7.0 is released

After three months of active maintenance and another bug triage, the digiKam team is proud to present version 7.7.0 of its open source digital photo manager. See below the list of most important features coming with this release. Read more

Dilution and Misuse of the "Linux" Brand

Samsung, Red Hat to Work on Linux Drivers for Future Tech

The metaverse is expected to uproot system design as we know it, and Samsung is one of many hardware vendors re-imagining data center infrastructure in preparation for a parallel 3D world. Samsung is working on new memory technologies that provide faster bandwidth inside hardware for data to travel between CPUs, storage and other computing resources. The company also announced it was partnering with Red Hat to ensure these technologies have Linux compatibility. Read more

today's howtos

  • How to install go1.19beta on Ubuntu 22.04 – NextGenTips

    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

  • molecule test: failed to connect to bus in systemd container - openQA bites

    Ansible Molecule is a project to help you test your ansible roles. I’m using molecule for automatically testing the ansible roles of geekoops.

  • How To Install MongoDB on AlmaLinux 9 - idroot

    In this tutorial, we will show you how to install MongoDB on AlmaLinux 9. For those of you who didn’t know, MongoDB is a high-performance, highly scalable document-oriented NoSQL database. Unlike in SQL databases where data is stored in rows and columns inside tables, in MongoDB, data is structured in JSON-like format inside records which are referred to as documents. The open-source attribute of MongoDB as a database software makes it an ideal candidate for almost any database-related project. This article assumes you have at least basic knowledge of Linux, know how to use the shell, and most importantly, you host your site on your own VPS. The installation is quite simple and assumes you are running in the root account, if not you may need to add ‘sudo‘ to the commands to get root privileges. I will show you the step-by-step installation of the MongoDB NoSQL database on AlmaLinux 9. You can follow the same instructions for CentOS and Rocky Linux.

  • An introduction (and how-to) to Plugin Loader for the Steam Deck. - Invidious
  • Self-host a Ghost Blog With Traefik

    Ghost is a very popular open-source content management system. Started as an alternative to WordPress and it went on to become an alternative to Substack by focusing on membership and newsletter. The creators of Ghost offer managed Pro hosting but it may not fit everyone's budget. Alternatively, you can self-host it on your own cloud servers. On Linux handbook, we already have a guide on deploying Ghost with Docker in a reverse proxy setup. Instead of Ngnix reverse proxy, you can also use another software called Traefik with Docker. It is a popular open-source cloud-native application proxy, API Gateway, Edge-router, and more. I use Traefik to secure my websites using an SSL certificate obtained from Let's Encrypt. Once deployed, Traefik can automatically manage your certificates and their renewals. In this tutorial, I'll share the necessary steps for deploying a Ghost blog with Docker and Traefik.