System & Network Admin

I've got an Elixir application running inside a Docker container (in my laptop). The Elixir application was executed with the following command: iex \ --name test@1.2.3.4 \ --cookie secret \ ...

How can I connect two Erlang/Elixir-nodes of two different machines via network connection?

Apache Beam is an open source, unified model and set of language-specific SDKs for defining and executing data processing workflows, and also data ingestion and integration flows, supporting Enterprise Integration Patterns (EIPs) and Domain Specific Languages (DSLs). Dataflow pipelines simplify the mechanics of large-scale batch and streaming data processing and can run on a number of runtimes like Apache Flink, Apache Spark, and Google Cloud Dataflow (a cloud service). Beam also brings DSL in different languages, allowing users to easily implement their data integration processes.

Learn how to build a simple cli todo tool using elixir

Learn how to get your SSH keys easier to another system using different available methods such as manually or a tool like ssh-copy-id

Use these Linux commands to verify connection speeds, analyze delays, and test whether other systems are reachable.

I use a variety of calendars to organize my life, my family, and the many projects and businesses I'm involved with. Most of them use Google Workspace, but at work we use, for some unfathomable reason, Office 365. I run my life by my calendars. There's no way I could

We'll never get acquired. We'll never shut down. You pay, we keep the lights on.

What do you do when you need to choose an OS at boot but aren’t physically near your machine? [Dakhnod]’s inventive solution is a mix of GRUB, Wake-on-LAN (WOL), and a lightweight ESP82…

Hey friend! Have you heard about these new 5G cellular networks promising lightning quick speeds? Well with this clever little Raspberry Pi add-on called the 5G HAT, you can unlock 5G and turn your Pi into a speedy modern router in no time. Intrigued? Read on! An Introduction to 5G You‘ve likely heard the term […]

Learn about the differences between normal and privileged containers in Linux.

Learn how to set and modify the capability permissions for Linux files and containers.

Many users get confused about the --privileged flag. Users often equate this flag to unconfined or full root access to the host system.

TRUST. It's what certificates are all about. How do we know that we can trust a server? We verify that the server has a certificate, and that the certificate...

I'm sure many of you follow me because you use Proxmox. It's been a staple of my content for some time now. So, while working on the next episode of the Ceph...

Create your own Debian based Distribution from scratch in 10 Minutes with Debootstrap. Full Instructions at: https://github.com/dinooz/denos

Check how our internal consultant built his own Linux Distribution and discover the go-nuts in this 2024 guide.

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Aggregate the day's most popular links in your Mastodon timeline into an RSS feed.

Lix is an independent variant of the Nix package manager, developed by a team of open-source volunteers, and maintained by and for a passionate community of users.

These days, adding a little LCD or OLED to your project is so cheap and easy that you can do it on a whim. Even if your original idea didn’t call for a display, if you’ve got I2C and a …

This post has a weird genesis. If I think back to the first time I heard of Transit Encryption I originally thought it was something else, and when I finally understood what the docs were telling me, I thought it was the dumbest idea ever. Turns out I was way wrong. Over the next half an hour I hope to explain why. The point of transit encryption is to provide a mechanism for requesting vault encrypt some content for you as a service, so that you can send that encrypted blob over untrustworthy, or observable channels.

I've installed postgres 9.5 on ubuntu 16.04 which creates postgresql.service and postgresql@.service. I understand that the postgresql.service spawns all enabled instances of postgres, and I can c...

Website and documentation for the open source command-line double-entry accounting system named ledger

The Amazon Kindle line of e-readers have been incorporating 3G internet access since the very first model that came out in 2007. Whispernet internet access is