Containers

How to Set Up Bash Aliases and Environment Variables on Debian 11 — step-by-step Debian 11 tutorial on Progressive Robot

How to Set Up Bash Aliases and Environment Variables on Debian 11

Introduction Deploying set up bash aliases and environment variables on debian 11 on a Debian 11 Bullseye machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. […]

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How to Build Docker Images with Multi-Stage Builds on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Build Docker Images with Multi-Stage Builds on FreeBSD 12

Introduction Deploying build docker images with multi-stage builds on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within […]

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How to Install Docker Engine on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Install Docker Engine on CentOS Stream 9

Introduction How to Install Docker Engine on CentOS Stream 9 on CentOS Stream 9 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is […]

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How to Build Docker Images with Multi-Stage Builds on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Build Docker Images with Multi-Stage Builds on RHEL 8

Multi-stage builds are one of the most powerful features in Docker, allowing you to produce lean production images by separating the build environment from the runtime environment. On RHEL 8, where production image size and attack surface matter, multi-stage builds reduce final image size dramatically by discarding build tools and intermediate artifacts. This tutorial walks […]

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How to Install k3s Kubernetes on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Install k3s Kubernetes on FreeBSD 13

Introduction How to Install k3s Kubernetes on FreeBSD 13 is a core administration task for any FreeBSD 13 server operator. FreeBSD 13 ships with the 15.0-RELEASE kernel, ZFS as the default root filesystem, Capsicum capability sandboxing improvements, and an updated ports tree. Unlike Linux distributions, FreeBSD uses rc(8) for service management, pf for packet filtering, […]

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How to Configure Kubernetes Ingress on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Configure Kubernetes Ingress on CentOS Stream 9

Introduction CentOS Stream 9 ships with a stable, security-hardened base that makes deploying configure kubernetes ingress on centos stream 9 both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Kubernetes Ingress on CentOS Stream 9, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Install Docker Engine on SLES 15 — step-by-step SUSE Linux Enterprise 15 tutorial on Progressive Robot

How to Install Docker Engine on SLES 15

Introduction This tutorial covers How to Install Docker Engine on SLES 15 on SLES 15. SLES 15 (SUSE Linux Enterprise Server 16) is SUSE’s enterprise-grade Linux distribution. It uses the zypper package manager, AppArmor for mandatory access control, and systemctl for service management. Step 1 — Install Docker zypper install -y docker docker-compose Step 2 […]

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How to Install Kubernetes with kubeadm on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install Kubernetes with kubeadm on RHEL 8

Kubernetes has become the de facto standard for container orchestration, and RHEL 8 provides a stable, enterprise-grade foundation for running production Kubernetes clusters. In this tutorial you will walk through a complete kubeadm-based installation on RHEL 8, from preparing the host operating system through initialising the control-plane node and connecting worker nodes via a Flannel […]

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How to Set Up Uptime Kuma for Service Monitoring on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Uptime Kuma for Service Monitoring on RHEL 7

How to Set Up Uptime Kuma for Service Monitoring on RHEL 7 Uptime Kuma is a self-hosted, open-source uptime monitoring tool that provides a clean web interface for tracking the availability of HTTP endpoints, TCP ports, DNS records, and more. It supports multiple notification channels including email, Slack, and Telegram, and includes a built-in public […]

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How to Install InfluxDB and Telegraf on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install InfluxDB and Telegraf on RHEL 7

How to Install InfluxDB and Telegraf on RHEL 7 InfluxDB is a purpose-built time series database optimised for the high-write workloads that are typical in infrastructure monitoring, IoT data collection, and application performance tracking. Unlike general-purpose databases, InfluxDB stores measurements indexed by timestamp and tag values, enabling sub-millisecond queries across billions of data points. Telegraf […]

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