Self-Hosted Docker Image Registries: A Comprehensive Guide

In the world of containerization, Docker has emerged as a leading platform, enabling developers to package applications into standardized units for development, shipment, and deployment. Central to this ecosystem is the Docker image registry, a service that stores and distributes Docker images. While Docker Hub is the most popular public registry, many organizations opt for self-hosted Docker image registries to maintain control over their images, enhance security, and improve performance. This article explores the benefits of self-hosting a Docker image registry and reviews both open-source and commercial solutions available today.

Enabling Prometheus Metrics in the Zot Project (Docker Image Registry)

The Zot project is an open-source Docker image registry designed to be simple, efficient, and easy to use. As with any critical infrastructure component, monitoring is essential to ensure the registry’s health and performance. Prometheus, a leading open-source monitoring solution, can be integrated with Zot to collect and visualize metrics, providing insights into the registry’s operations. In this article, we will walk through the steps to enable Prometheus metrics in the Zot project, ensuring you have the necessary observability to maintain a healthy Docker image registry.

Enabling Prometheus Metrics in Harbor Project

Harbor is an open-source container image registry that provides various features such as vulnerability scanning, role-based access control, and image replication. As with any critical infrastructure component, monitoring is essential to ensure its smooth operation. Prometheus is a popular open-source monitoring and alerting toolkit that can be integrated with Harbor to collect and visualize metrics. In this article, we will explore how to enable Prometheus metrics in the Harbor project.

Using Harbor as a Self-Hosted Image Registry

In the world of containerization, managing container images efficiently is crucial for seamless deployment and scaling. While Docker Hub is a popular choice for hosting container images, organizations often require a self-hosted solution for better control, security, and compliance. Harbor, an open-source cloud-native registry, is a robust option that provides a secure and scalable environment for managing container images. In this article, we will explore how to set up Harbor as a self-hosted image registry using Docker Compose, and demonstrate how to upload an image to your Harbor registry.

How to List All Projects in a Docker Image Registry

In the world of DevOps, managing container images efficiently is crucial for streamlined operations and deployments. Docker image registries serve as repositories where container images are stored, managed, and retrieved. Whether you’re using Docker Hub, a private registry, or an open-source alternative like Harbor, listing all projects or repositories is a common task. This article will guide you through the process of listing all projects in a Docker image registry using various tools and techniques.

How to Docker Pull from a Registry with an Invalid TLS Certificate

In the world of containerization, Docker has become a pivotal tool for developers and DevOps engineers alike. One of the common tasks is pulling images from a Docker registry. However, sometimes you might encounter a registry with an invalid TLS certificate. This can be due to a self-signed certificate or an expired one. While it’s generally advisable to use valid certificates for security reasons, there are scenarios where you might need to bypass this check for testing or development purposes.

Using HAProxy for TLS Termination in a Docker Container

In today’s cloud-native environments, securing communication between clients and servers is paramount. TLS termination is a common practice where the decryption of incoming TLS connections is handled by a load balancer, offloading this task from backend servers. HAProxy, a reliable and high-performance open-source load balancer, is an excellent choice for this task. In this article, we’ll explore how to set up HAProxy for TLS termination using Docker and Docker Compose.

Archiving Websites with ArchiveBox: A Comprehensive Guide

In the digital age, the ephemeral nature of web content poses a significant challenge for data preservation. Websites can change, move, or disappear entirely, leaving gaps in information and historical records. For developers, researchers, and archivists, maintaining a reliable archive of web content is crucial. Enter ArchiveBox, an open-source tool designed to help you archive websites efficiently and effectively. What is ArchiveBox? ArchiveBox is a self-hosted web archiving solution that allows you to save snapshots of websites in various formats.

Pushing Docker Logs to Loki Using Promtail

In the world of DevOps, effective log management is crucial for monitoring, debugging, and maintaining applications. Loki, a log aggregation system inspired by Prometheus, is designed to be cost-effective and easy to operate. It doesn’t index the contents of the logs but rather indexes the metadata, making it a lightweight and efficient solution for log management. In this article, we’ll explore how to push Docker logs to Loki using Promtail, an agent that ships the contents of local logs to a Loki instance.

Using Nginx-Proxy in Your Homelab: A Comprehensive Guide

In the world of self-hosting and homelabs, managing multiple web services can become a complex task. This is where a reverse proxy like Nginx comes into play. Nginx-proxy, an automated reverse proxy for Docker containers, simplifies the process of managing and routing traffic to your various services. In this article, we’ll explore how to set up and use nginx-proxy in your homelab environment. What is Nginx-Proxy? Nginx-proxy is a Docker container that automatically configures itself to act as a reverse proxy for other Docker containers.

Using GitLab as a Container Image Registry

In the world of DevOps, containerization has become a cornerstone for deploying applications efficiently and consistently across various environments. Docker, one of the most popular containerization platforms, allows developers to package applications and their dependencies into containers. However, managing these container images requires a robust image registry. GitLab, a well-known platform for source code management and CI/CD, offers an integrated Container Registry that simplifies the process of storing, sharing, and deploying container images.

Using Gitea as a Container Image Registry

In the world of DevOps, managing container images efficiently is crucial for streamlined development and deployment processes. While Docker Hub and other cloud-based registries are popular choices, there are scenarios where a self-hosted solution is preferable. Gitea, a lightweight and open-source Git service, can be extended to function as a container image registry, providing a seamless and integrated experience for managing both code and container images. Why Use Gitea as a Container Image Registry?

Using Zot Registry as a Pull-Through Cache

In the world of containerization, efficient management of container images is crucial for seamless application deployment and scaling. Container registries play a pivotal role in storing and distributing container images. However, frequent access to remote registries can lead to increased latency and bandwidth usage. This is where a pull-through cache comes into play, and Zot Registry offers an excellent open-source solution for this purpose. What is Zot Registry? Zot is a lightweight, open-source container image registry designed to be simple, secure, and efficient.

Using Zot Registry: A Comprehensive Guide for DevOps Engineers

In the rapidly evolving world of DevOps, containerization has become a cornerstone of modern software development and deployment practices. As organizations increasingly adopt container technologies, the need for efficient and secure container registries has grown. Zot Registry, an open-source OCI-compliant container registry, offers a compelling solution for managing container images. In this article, we’ll explore the features, benefits, and setup of Zot Registry, and how it can be integrated into your DevOps workflow.

Setting Up a Self-Hosted Docker Image Registry

In the world of containerization, Docker has become a cornerstone technology, enabling developers to package applications and their dependencies into a standardized unit called a container. While Docker Hub serves as a popular public registry for storing and sharing Docker images, there are scenarios where a self-hosted Docker image registry becomes essential. This article will guide you through setting up your own Docker image registry, providing greater control, security, and privacy over your container images.

Running Mimir Locally for Testing

Mimir is an open-source project developed by Grafana Labs that provides a scalable and highly available long-term storage solution for Prometheus metrics. Running Mimir locally can be an excellent way to test its capabilities, experiment with configurations, and understand its integration with Prometheus and Grafana. This article will guide you through the process of setting up Mimir on your local machine for testing purposes. Prerequisites Before you begin, ensure that you have the following installed on your machine:

Understanding GitLab Downstream Pipelines: A Simple Example

In the realm of DevOps, Continuous Integration and Continuous Deployment (CI/CD) are crucial practices that streamline the software development lifecycle. GitLab CI/CD is a powerful tool that allows developers to automate their workflows, from code testing to deployment. One of the features that GitLab offers is downstream pipelines, which can be particularly useful for complex projects with multiple components or dependencies. This article will guide you through a simple example of setting up a downstream pipeline in GitLab.

Implementing GitLab Downstream Pipelines: A Comprehensive Guide

In the realm of DevOps, Continuous Integration and Continuous Deployment (CI/CD) pipelines are crucial for automating the software development lifecycle. GitLab CI/CD is a powerful tool that allows teams to automate testing, building, and deployment processes. One of the advanced features of GitLab CI/CD is the ability to create downstream pipelines, which can help manage complex workflows by triggering additional pipelines from a parent pipeline. This article will explore a larger example of implementing GitLab downstream pipelines to streamline your CI/CD processes.

Checking RabbitMQ Cluster Health Using RabbitMQ CLI

RabbitMQ is a robust messaging broker that facilitates communication between distributed systems. In a production environment, ensuring the health of a RabbitMQ cluster is crucial for maintaining the reliability and performance of your applications. This article will guide you through the process of checking the health of a RabbitMQ cluster using the RabbitMQ command-line interface (CLI). Prerequisites Before diving into the health check process, ensure that you have the following prerequisites:

Securing RabbitMQ Communication

RabbitMQ is a robust messaging broker that facilitates communication between distributed systems. As organizations increasingly rely on RabbitMQ for critical operations, securing its communication becomes paramount. This article delves into best practices for securing RabbitMQ communication, ensuring data integrity, confidentiality, and authenticity. 1. Understanding RabbitMQ Security Basics RabbitMQ, by default, provides several security features, but it’s essential to configure them correctly to ensure robust security. The primary areas of focus include: