Podman is Red Hat’s daemonless container engine and has been the default container tool on RHEL 8 since its initial release. Unlike Docker, Podman does not rely on a long-running root daemon — each container runs as a direct child process of the user who started it. This means regular users can run containers without […]
How to Configure Nginx WebSocket Proxying on RHEL 7 WebSockets provide a full-duplex communication channel over a single TCP connection, enabling real-time features such as live chat, push notifications, collaborative editing, and live dashboards. Unlike traditional HTTP requests, a WebSocket connection is established through an HTTP upgrade handshake and then kept open indefinitely. Nginx can […]
RabbitMQ is a robust open-source message broker that implements the AMQP protocol, enabling asynchronous communication between application components. It is widely used for task queuing, event streaming, and decoupling microservices. On RHEL 8, RabbitMQ requires a compatible version of Erlang that is best installed from the official RabbitMQ Cloudsmith repository rather than the default RHEL […]
Netdata is a lightweight, real-time performance monitoring agent that collects thousands of system and application metrics with per-second granularity and displays them through a built-in, zero-configuration web dashboard. Unlike heavier stacks, Netdata starts delivering useful insights within minutes of installation and requires virtually no ongoing maintenance. It can also stream metrics to a central parent […]
Podman is RHEL 8’s native container runtime and ships as a first-class package, offering full Docker CLI compatibility without requiring a background daemon running as root. One of its most powerful features on RHEL 8 is socket activation: systemd opens the Podman socket on demand, meaning the container engine only consumes resources when something actually […]
How to Install and Configure Postfix Mail Server on RHEL 7 Postfix is a high-performance, security-focused Mail Transfer Agent (MTA) that is installed by default on many RHEL 7 systems. It handles the sending, receiving, and routing of email using the SMTP protocol. Whether you are setting up a server to send application alerts, relay […]
How to Install and Configure OpenVPN on RHEL 7 OpenVPN is one of the most widely deployed VPN solutions in the enterprise, valued for its flexibility, strong encryption, and compatibility across nearly every operating system. On RHEL 7, OpenVPN is not included in the base repositories but is available from EPEL. Building a proper PKI […]
How to Install Go and Build CLI Tools on RHEL 7 Go (also known as Golang) is a statically typed, compiled language developed by Google that has become a popular choice for building command-line tools, system utilities, microservices, and cloud-native applications. Its fast compilation times, straightforward toolchain, and ability to produce single, self-contained binaries make […]
How to Configure Kerberos Authentication on RHEL 7 Kerberos is a network authentication protocol that uses symmetric-key cryptography to allow clients and servers to prove their identity to each other securely without transmitting passwords over the network. It is the backbone of authentication in Active Directory environments and is natively supported across Linux through MIT […]
How to Configure Database Connection Pooling with PgBouncer on RHEL 7 Every PostgreSQL client connection spawns a backend process on the server, consuming approximately 5–10 MB of RAM for its working memory and adding overhead to the process scheduler. Applications that open hundreds of short-lived connections — such as PHP scripts, Node.js workers, or microservices […]
