Category: System Administration
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How Build a Monitoring & Observability platform with Prometheus, Node Exporter and Grafana
Having a window into what all the systems you own are up to can be essential to fix bottlenecks, fix issues or is predict and correct coming issues before they can have any impact. This is where we see the overlap between monitoring and obserability. In this post, we are…
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How to Configure Linux DNS Server for Active Directory DNS Sync Using BIND9
In my homelab environment I have 2 main servers, a small always on server, and a big server that I don’t always keep on because it absolutely chomps through power! This big server, among other services, runs an instance of Windows Active Directory (AD) on a Domain Controller (DC). This…
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How to Use YubiKey (or Any FIDO2 Token) for Fedora Workstation Local Account and Sudo Authentication
I finally took the plunge (very log over due) and brought myself some Yubikeys to play with for personal account security. In this post, we are going to cover how you can configure Linux to use the Yubikeys as part of user account authentication. There are a few different ways…
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Resolve Cisco SSH Key Exchange Issues – No Matching Exchange Method Found
Introduction In this post, we are going to go over how to get around an error I came across when trying to use Secure Shell (SSH) to access my Cisco C3560CX switch from my Fedora Workstation computer. Section I – What is SSH? Secure Shell is a way to control…
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How To Resolve Docker Compose Launching Python Modules Errors
Introduction In this post, we are going to go over a seemingly very annoying error when trying to start a Docker container using Docker Compose. For reference I ran into this error on a freshly build Fedora Linux Server image that I had just installed Docker and Docker Compose on.…
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Enable SSH Access for Non-Admin Users on TerraMaster NAS
Introduction Running a Network Attached Storage (NAS) server can be an easy way to centralise data within your home network. It could be a sold ready to go out the box NAS server, like the offerings from TerraMaster or Synology, or it could be any computer hardware with a decent…
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Automate Your Home Backup Server Setup Easily
Introduction Let’s be honest, we all need better processes for our backups. It’s the dirty little secret of many people in Information Technology (IT). Some go for the do nothing approach. Some go for the overly complicated approach. I think a healthy balance in between the two can give you…
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How to Fix Trust Relationship Between this Workstation and the Primary Domain Controller Failed without Leaving Domain
Introduction In this post, we are going to go through how you can easily repair the trust relationship between a Windows Server and its Primary Domain Controller without needing to leave and rejoin the domain. Section I – The Error If you have spent much time administrating a Windows domain…
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Simple Automated Network Device Configuration Backups
Time to read: In this post, we are going to go over a simple and easy way to implement automatic network device configuration backups. For this I will be using Ansible to connect onto each device and then copy their device configurations locally. You can either leave the device configurations…
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Self Hosted Password Manager Using Docker
Time to read: In this post we are going to cover how to use Docker compose to build a self hosted password manager. I will be using VaultWarden as the password manager in container form with Nginx acting as a reverse proxy in front of the password manager again in…
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