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How to Deploy PostgreSQL as a Docker Container

PostgreSQL, also referred to as Postgres, is the leading object-relational database system. It’s popular because of its high level of compliance with the SQL standard and inclusion of additional features that simplify working…

What Are Floating IPs In DigitalOcean?

DigitalOcean’s Floating IPs are a way of reserving public IP addresses that are independent of your compute resources. They provide a way to rapidly reroute traffic between your assets without waiting for DNS changes to take …

How to Set Variables In Your GitLab CI Pipelines

GitLab CI’s Variables system lets you inject data into your CI job environments. You can use variables to supply config values, create reusable pipelines, and avoid hardcoding sensitive information into your .gitlab-ci.yml fi…

What is Grafana and When Should You Use It?

Grafana is an open-source observability platform for visualizing metrics, logs, and traces collected from your applications. It’s a cloud-native solution for quickly assembling data dashboards that let you inspect and analyze…

How to Use Hadolint to Lint Your Dockerfiles

Dockerfiles define the content of Docker images as a set of instructions in a text file. The Dockerfile syntax is generally straightforward but there are some gotchas to avoid. Adhering to best practices while writing complex…

Should You Learn Kubernetes?

Kubernetes has seen a surge of adoption over the past few years as companies have pivoted towards containers and cloud-native deployment methods. The platform’s become the leading orchestration solution for running containers…

What Are UUIDs and Why Are They Useful?

A Universally Unique Identifier (UUID) is a specific form of identifier which can be safely deemed unique for most practical purposes. Two correctly generated UUIDs have a virtually negligible chance of being identical, even …

How to Secure Docker’s TCP Socket With TLS

Docker’s API is completely unprotected by default except for filesystem permissions on its Unix socket. You should set up TLS when exposing the Docker API over TCP so Docker Engine and your clients can verify each others’ ide…

How to Set Up a Reverse Proxy With Apache

Apache is a versatile web server which offers a full complement of supporting features, some of them via extensions. In this article, we’ll use the mod_proxy module to configure Apache in a reverse proxy role….
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