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Programming Leftovers

Submitted by Roy Schestowitz on Friday 22nd of April 2022 12:55:47 AM Filed under
Development

  • Live - Let's talk dev-ops - introduction | Linux.org

    It was a quick one, but I did a 22ish minute live this thursday with an intro to some great dev-ops / infrastructure tools. Check it out below. I'm going to try and do a weekly live on Thursdays at 8pm EDT. Some will be fun, some may not be! lol. Either way, join me and hop in the chat.. I love talking to you guys! Maybe we'll do some guests as well.

  • NVIDIA transition from fir-dev

    Dear Flang Community and Supporters,

    NVIDIA’s involvement in fir-dev, the fir-dev branch on github flang-compiler/18-llvm-project, is coming to a close.

    Thank you to everyone who contributed to fir-dev and to all of the dedicated contributors and reviewers who helped upstream code to llvm-project.

    As of April 21, 2022, NVIDIA will transition to contributing directly to llvm-project. NVIDIA will no longer be contributing to or upstreaming code from fir-dev.

    Access to fir-dev will remain open. There will be no change in the access policies or permissions without consensus of the flang community. Others are free to continue to use fir-dev.

    NVIDIA will continue to contribute to llvm-project/flang with the same dedication that we have in the past. Our commitment to flang is unwavering.

  • The syslog-ng insider 2022-04: typing; sudo; Zinc; Elastic Cloud; 3.36; - Blog - syslog-ng Community - syslog-ng Community

    This is the 100th issue of syslog-ng Insider, a monthly newsletter that brings you syslog-ng-related news.

  • Meld file and folder diff viewer

    EasyOS has 'xfdiff' to see differences between two files. You can find it in the "Utility" menu. However, if you would like something more heavy-duty, that also compares folders and can generate patch files, then consider Meld...

  • Setting Up a CI System Part 4: Live patching your CI gateway - mupuf.org

    System updates are a necessary evil for any internet-facing server, unless you want your system to become part of a botnet. This is especially true for CI systems since they let people on the internet run code on machines, often leading to unfair use such as cryptomining (this one is hard to avoid though)!

    The problem with system updates is not the 2 or 3 minutes of downtime that it takes to reboot, it is that we cannot reboot while any CI job is running. Scheduling a reboot thus first requires to stop accepting new jobs, wait for the current ones to finish, then finally reboot. This solution may be acceptable if your jobs take ~30 minutes, but what if they last 6h? A reboot suddenly gets close to a typical 8h work day, and we definitely want to have someone looking over the reboot sequence so they can revert to a previous boot configuration if the new one failed.

    This problem may be addressed in a cloud environment by live-migrating services/containers/VMs from a non-updated host to an updated one. This is unfortunately a lot more complex to pull off for a bare-metal CI without having a second CI gateway and designing synchronization systems/hardware to arbiter access to the test machines's power/serial consoles/boot configuration.

    So, while we cannot always avoid the need to drain the CI jobs before rebooting, what we can do is reduce the cases in which we need to perform this action. Unfortunately, containers have been designed with atomic updates in mind (this is why we want to use them), but that means that trivial operations such as adding an ssh key, a Wireguard peer, or updating a firewall rule will require a reboot. A hacky solution may be for the admins to update the infra container then log in the different CI gateways and manually reproduce the changes they have done in the new container. These changes would be lost at the next reboot, but this is not a problem since the CI gateway would use the latest container when rebooting which already contains the updates. While possible, this solution is error-prone and not testable ahead of time, which is against the requirements for the gateway we laid out in Part 3.

  • How to convert ebooks in bulk with Python and Calibre - Orthodox Pirate
  • A literal string type for Python [LWN.net]

    Using strings with contents that are supplied by users can be fraught with peril; SQL injection is a well-known technique for attacking applications that stems from that, for example. Generally, database frameworks and libraries provide mechanisms that seek to lead programmers toward doing The Right Thing, with parameterized queries and the like, but they cannot enforce that—inventive developers will seemingly always find ways to inject user input into places it should not go. A recently adopted Python Enhancement Proposal (PEP) provides a way to enforce the use of strings that are untainted by user input, but it uses the optional typing features of the language to do so; those wanting to take advantage of it will need to be running a type-checking program.

  • This Week In Rust: This Week in Rust 439
  • Rust Library Team Aspirations | Inside Rust Blog

    Over the past years, Rust has grown from a language used by a few dedicated users into a well-known language used by lots of highly visible projects and successful companies. As the Rust user base, the community, and the ecosystem continues to grow, we need to look forward and consider how we need to scale to adapt to the needs of the ever expanding Rust ecosystem.

    Recently, the compiler team shared their blog post detailing their ambitions for 2022, and the language team published a roadmap with their vision for Rust in 2024.

»

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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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