System & Network Admin

I've been using Bash functions quite liberally over the past couple years, but last week I discovered that they can be much better than I thought. In this post, I'll explain how I thought they worked, why I was wrong, and how that makes them better.Function syntax

What, exactly, distinguishes monitoring from observability? In general, the differences can be distilled into two main points.

There has been confusion in Debian-based Linux distros regarding apt and apt-get commands. This ultimate guide explains it all.

With a growing number of cloud-native applications going to production through Kubernetes adoption, security is an important checkpoint that you must consider early in the process. When designing a cloud-native application, it is very important to embed a security strategy up front. Failure to do so leads to lingering security issues that can cause project delays and ultimately cost you unnecessary stress and money.

Looking for how to fix Ansible error failed to connect to the host via ssh? We can help you. Ansible saves time by automation of server tasks. However, improper host entry in the Ansible Inventory file or bad SSH configuration can create connection errors too. At Bobcares, we get requests to fix Ansible errors as […]

There are some key differences between observability and monitoring especially with regard to what both practices mean for SREs.

A deep dive case study into the Google SRE Site Reliability Engagement Model with and overview and specific examples.

How to get and set host name of a Linux machine along with some other host information? What is pretty host name and static host name?

In this article, we will show you how to set system hostname or domain name permanently in Linux using hostname and hostnamectl command.

Every organization has the ability to attain a "trust and verify” governance approach and meet the needs of both dev and ops.

Here are the the top five must-haves for any infrastructure-as-code (IaC) automation platform you're considering for your organization.

Sharpen your sysadmin and Linux skills and learn how to set up tooling to simplify administering multiple machines.

A protip by faceleg about tmux and linux.

I have ten or so servers that I connect to with SSH on a regular basis. Each has an entry in my local computer's ~/.ssh/config file. To avoid losing control of my running process when my Internet

This brief tutorial explains how to autostart Tmux session on a remote Linux system when logging in via SSH from your local system.

Setting up a backup server to take over a primary server’s operations when it becomes a victim of server downtime issues is a skill set that most users need.

Komodor is a Kubernetes-native troubleshooting platform, and at this year's Kubecon has released out-of-the-box workflows.

Docker Desktop for Windows uses SSL to manage all your images and container ...

The timing of certain events is a common task for a developer. Common scenarios for timers are watchdogs, cyclic execution of tasks, or scheduling events for a specific time. In this article, I show how to create a POSIX-compliant interval timer using timer_create(...). You can download the source code for the following examples from GitHub.

A couple of months ago I wrote a toy program called whitespacer. Ever since, I’ve had this gnawing feeling that I could have done it better; that it could have been written in a more performant manner.

This post will guide you through automating a

In this article, I will show you some simple tools and tricks that will help you to prevent ssh servers from brute force and dictionary attacks.

Today I am going to be talking about IoT (Internet of Things) development using Raspberry Pi and Elixir), using Nerves IoT platform. I usually work on web applications, but I started learning about embedded devices development to expand my expertise....

Nerves is a complete IoT platform and infrastructure for you to build and deploy maintainable embedded systems.