Run NixOS in a DigitalOcean Droplet

This little tutorial will show you how to turn an Ubuntu Droplet (VM) on DigitalOcean into a NixOS Droplet using nixos-infect. NixOS is a Linux distribution which is declaratively configured using a specification written in the Nix expression language describing the desired state of the system. It supports automatic upgrades and rollbacks. Aside from DigitalOcean, you can run NixOS on most common computers. It’s possible to run NixOS on ARM64 computers, like on the Raspberry Pi 3.
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Deploy a Kubernetes Cluster with Service Mesh on DigitalOcean Using K3s

This guide will help you set up a Kubernetes cluster, including a service mesh using k3s (at the time of writing at version 0.10.2) and Rio. We’ll deploy the cluster on DigitalOcean. Ubuntu 18.04 LTS will be OS during this tutorial. If you sign up to DigitalOcean using this link you’ll receive $50 to spend on their services over 30 days. If you wish to run your cluster on your own hardware, you could do so on Raspberry Pis (ARM64) or Intel NUCs (x86_64) for example.
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Deploy Bitwarden on Docker Swarm

In this tutorial we’ll deploy Bitwarden on Docker Swarm. It’s based on an earlier tutorial on this site, where we deployed Docker Swarm on DigitalOcean. Bitwarden is a password manager with support for self hosting. We’ll be using bitwarden_rs, an unofficial Bitwarden API server implementation, as it’s a fair bit faster than the default implementation. Bitwarden_rs is written in Rust and is compatible with the officla Bitwarden clients. Bitwarden has the following features, among others:
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Deploy GitLab CE on Docker Swarm

This short tutorial demonstrates how simple it is to deploy applications, in this case GitLab CE, with a Docker Swarm cluster, and it builds on the last one, which deployed a Docker Swarm cluster on DigitalOcean. GitLab CE can also be installed and run on a bare metal server as well. It assumes you have a Docker Swarm cluster running, and that you have root access to your nodes.
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Create a Docker Swarm Cluster on DigitalOcean

This tutorial will guide you through the process of setting up a Docker Swarm cluster on DigitalOcean. It’ll also show you how to deploy Traefik as a reverse proxy for your services, and Swarmpit as a web interface for your cluster. We’ll use Fedora 30 as the OS for this tutorial. If you sign up to DigitalOcean using this link you’ll receive $50 to spend on their services over 30 days.
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