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today's howtos

Submitted by Roy Schestowitz on Wednesday 12th of January 2022 12:09:49 AM Filed under
HowTos
  • Virtual machine for my courses | Vojtěch Zeisek

    For my courses ofwork in Linux command line not only for MetaCentrum and with molecular data in R I provide VirtualBox image, which allows to run complete desktop Linux (in this case openSUSE Leap) with all preinstalled applications needed for both courses. It's easy way how to get fully working Linux to play with. It requires at least bit powerful notebook, e.g. at least quad-core with at least 8 GB RAM, but more is better.

  • The Complete Guide to User Management in Linux

    User account management is one of the many challenges of Linux system administrators. Some of the responsibilities of a system administrator are enabling/disabling user accounts, preserving the home directory, setting user permissions, assigning groups/shells to users, and managing passwords.

    Effective control of user accounts is only possible after familiarity with the basics of Linux account management. Hence, this article is a stepping stone towards securing user accounts. It demonstrates how to create, delete and modify user accounts and manage predefined settings or files to build the most suitable and secure environment for Linux users.

  • How to install and Configure HAProxy load balancer on Rocky Linux/Alma Linux 8

    HAProxy is a free and open source software that provides a high availability load balancer and proxy server for TCP and HTTP-based applications that spreads requests across multiple servers. It distributes the load among the web and application servers.

    Haproxy is popular for load balancing because of its efficiency, reliability, and low memory and CPU footprint. Load balancing is a common solution for distributing web applications horizontally across multiple hosts while providing the users with a single point of access to the service.

    It is available for install on major Linux distributions. In this guide we will learn how to install and configure HAProxy load balancer on Rocky Linux 8. This guide also works on other RHEL 8 based distributions like Alma Linux and Oracle Linux.

  • How to install and use Nmap on Ubuntu 20.04 – NextGenTips

    Welcome to today’s topic where we will be talking about how to install Nmap on Fedora 35.

    Nmap (Network mapper) is a free and open-source software for network discovery and security auditing. It is also used for network inventory services, managing service upgrades, and monitoring hosts’ downtime.

    Nmap is designed for bigger networks but it can also work fine with standalone hosts. Nmap suite includes an advanced GUI and results viewer called Zenmap, a flexible data transfer, redirection and a debugging tool called Ncat, a utility for comparing scan results called Ndiff, and a packet generation and response analysis tool called Nping.

  • How to Modify the Configuration of Running Docker Containers – CloudSavvy IT

    Docker containers are usually treated as immutable once they’ve started running. You can update some configuration parameters dynamically though, such as the container’s name and its hardware resource limits.

    In this guide, we’ll show you how to use built-in Docker commands to modify selected parameters of running containers. We’ll also look at what you shouldn’t change and a workaround you can use if you believe you must.

  • How to Secure Docker’s TCP Socket With TLS – CloudSavvy IT

    Docker’s API is completely unprotected by default except for filesystem permissions on its Unix socket. You should set up TLS when exposing the Docker API over TCP so Docker Engine and your clients can verify each others’ identity. Otherwise anyone with access to the TCP port could browse your Docker containers, start new ones, and run actions as root on your system.

    Configured TLS will require clients to present a valid certificate that’s signed by the server’s certificate authority. To get it working, you need to create SSL certificates, then set up Docker Engine to require TLS connections. Docker CLI clients must also be adjusted to expect a TLS server.

»

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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.

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