Setting up LUKS 2 – Keeping the Data Safe – Securing a System
We can now look at the LUKS key slots. You should see the key in the second slot now.As seen in the following screenshot, slot 1: is populated with a key: Figure 9.7 – LUKS with the second slot used…
Port protection and restricting network access 2 – Keeping the Data Safe – Securing a System
Adding new rules is easy to do. A rule can be added using the service name (found in the /etc/services file) or the port number. The most common task is to add a common user service, such as http or…
Searching and listing AppStream modules – Revisiting Modules and AppStreams
Searching and listing AppStream modules First things first, let’s review the list of commands that pertain to modules:• disable: Disable a module with all its streams• enable: Enable a module stream• info: Print detailed information about a module• install: Install…
Removing packages via AppStream – Revisiting Modules and AppStreams
Removing packages via AppStream Removing packages via AppStream is straightforward. In general, all you need to do is instruct the package manager to remove instead of install. If the package manager finds a module that matches, it will proceed to…
Giving your containers a root canal – Lions, Tigers, and Containers – Oh My! Podman and Friends
Giving your containers a root canal Straight from the Docker documentation, you will find that “The Docker daemon binds to a Unix socket instead of a TCP port. By default that Unix socket is owned by the user root and…
Creating handy-dandy utility containers – Lions, Tigers, and Containers – Oh My! Podman and Friends
Creating handy-dandy utility containersThis recipe shows how to use Podman to quickly spin up a container to complete useful tasks.This recipe will walk you through the process of creating super useful utilities leveraging containers. The basic principle of containers encourages…
Making a change to an image or video file using FFMPEG – Lions, Tigers, and Containers – Oh My! Podman and Friends
Making a change to an image or video file using FFMPEG In this example, we will leverage FFMPEG within a container in the same way we leveraged pandoc in the previous container. Using the FFMPEG container is especially handy because…
Managing stacks with pods – Lions, Tigers, and Containers – Oh My! Podman and Friends
Managing stacks with pods Keeping everything organized with stacks and prepping for Kubernetes. Podman supports concepts that do not exist in Docker. One of the big ones is pods – so I guess that’s where the name Podman derives from……
Manual pod creation – Lions, Tigers, and Containers – Oh My! Podman and Friends
Manual pod creationLet’s say we wanted to deploy Wiki.js inside a pod. Wiki.js is open source Wiki software built on Node.js and relies on a database backend. In other words, we want a pod that looks like this: Figure 11.4…
Initialization scripts – Lions, Tigers, and Containers – Oh My! Podman and Friends
Initialization scripts Most containerized databases feature a way to facilitate the running of scripts after initial setup, which can be very handy. This is typically done by allowing the user to mount a directory from the host machine that contains…