Server on Raven's Blog | Linux and IT

Building a Docker image for the Unbound DNS server

Wed, 09 Apr 2025 00:00:00 +0000

Greetings!

In this article we will build our own Docker image with a modern DNS server — Unbound. We’ll take a detailed look at the Dockerfile, as well as my script for preparing the container environment.

🖐️Hey!

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The sshd port doesn't change after editing sshd_config in Ubuntu

Sun, 02 Mar 2025 00:00:00 +0000

Greetings!

A short preface: in the course of my work I most often deal with Debian and RHEL/Centos distributions.
So somehow I missed the changes in recent versions of the Ubuntu distribution described below🫣

🖐️Hey!

Writing an ansible playbook for initial Linux server configuration

Wed, 05 Feb 2025 00:00:00 +0000

Greetings!

Today about automating the initial configuration of a Linux server using Ansible🎺. From setting up locales, timezone, SSH server parameters… to creating and configuring a new user’s environment👨‍💻: Oh-My-Zsh, Neovim, and Tmux. It’ll be interesting😉.

🖐️Hey!

Setting up a Syncthing file synchronization server in docker

Thu, 12 Dec 2024 00:00:00 +0000

Greetings!

In this article I’ll show how to easily deploy your own instance of a Syncthing server using docker compose🐳 on a system running Linux🐧. And of course I’ll go into detail about connecting clients, using Linux Mint, Windows, and Android as examples.

For those who don’t know, Syncthing is a popular client-server open source solution for synchronizing files🗃 between different devices📱💻.

🖐️Hey!

Setting up a Zabbix 7 + TimescaleDB monitoring server in docker

Tue, 24 Sep 2024 00:00:00 +0000

Greetings!

In this guide we will deploy the popular Zabbix monitoring system using TimescaleDB — a plugin for the PostgreSQL database that allows efficient work with “time series”. We’ll wrap all this goodness inside docker containers 🐳. It’s going to be interesting 😉.

Let me remind you that in one of the previous posts we discussed what monitoring systems in IT are, what kinds exist, and learned a bit about popular implementations today, among which is Zabbix.

Building OpenConnect (ocserv) Version 1.3 From Source in Debian 12 + Docker Image

Thu, 22 Aug 2024 00:00:00 +0000

Greetings!

At the request of some subscribers from our raven’s chat, today we’ll build the OpenConnect VPN server, also known as ocserv, latest version — 1.3, from open source code, on the Debian 12 distribution. We’ll also create a Docker image based on the same distribution.

If you’re not sure what kind of beast this is, I recommend reading my other article: Setting up an OpenConnect SSL VPN server (ocserv) in Docker for internal projects

Setting up your own DNS server Unbound and ad blocker Pi-hole in docker

Fri, 12 Jul 2024 00:00:00 +0000

Greetings!

As you might have guessed from the title, today we will install and run in docker a local DNS server Unbound paired with ~~blackjack..~~ an ad blocker via DNS requests — Pi-hole. All management of this setup will be done through the convenient web GUI of the Pi-hole program. And at the end of the article I’ll show how to connect this local DNS to our VPN server based on OpenConnect, which we set up earlier. It will be interesting and not difficult, almost)

Setting up an OpenConnect SSL VPN server (ocserv) in docker for internal projects

Wed, 01 May 2024 00:00:00 +0000

Greetings!

Today we will deploy our own VPN based on an OpenConnect server (ocserv) running over HTTPS and compatible with Cisco AnyConnect. We’ll package all of this into a docker container for ease of use and easy portability.

This server is planned to be used as the main connecting element, with the help of which we will configure network interaction between future projects and services. The server installation itself takes just a few commands. It’s going to be interesting 😉

Initial Linux server setup using Debian as an example

Sun, 05 Nov 2023 00:00:00 +0000

Greetings!

This time we will perform basic Linux server setup using the Debian 12 distribution as an example.

🖐️Hey!

LAMP/LEMP — Server Software Stack for Working with Web Applications

Thu, 14 Sep 2023 00:00:00 +0000

Greetings!

Today a new term is added to our Linux user’s glossary — LAMP or LEMP server.

🖐️Hey!

SSH — Secure Connection to Remote Hosts: Introduction

Wed, 02 Aug 2023 00:00:00 +0000

Greetings!

This time we’ll talk about remote connections using the secure SSH protocol, in particular its open implementation OpenSSH.

🖐️Hey!

Installing a Debian 12 Server in VirtualBox

Wed, 12 Jul 2023 00:00:00 +0000

Greetings!

Today we’ll install a Debian GNU/Linux 12 server on a virtual machine created with the VirtualBox hypervisor.

All actions were performed in a Linux Mint 21.1 environment. For Windows, all the steps are the same.

Introduction

In previous posts, we learned what a hypervisor and a virtual machine are, and also installed one of the popular hypervisors — VirtualBox on our Linux Mint.

Today we’ll create a new virtual machine with VirtualBox and install a fresh Debian 12 server on it without a graphical interface.