Containers

How to Configure CoreOS rkt Container Runtime on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure CoreOS rkt Container Runtime on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure coreos rkt container runtime on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully […]

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How to Set Up a Python Django Application on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up a Python Django Application on Debian 9

Introduction How to Set Up a Python Django Application on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from […]

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How to Install ArgoCD on Kubernetes on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install ArgoCD on Kubernetes on RHEL 7

How to Install ArgoCD on Kubernetes on RHEL 7 ArgoCD is a declarative, GitOps-based continuous delivery tool for Kubernetes. The core principle of GitOps is that the desired state of your cluster is stored in a Git repository, and a controller continuously reconciles the live cluster state against that desired state. ArgoCD monitors your Git […]

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How to Use Podman Compose on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Use Podman Compose on SLES 12

Introduction This tutorial covers How to Use Podman Compose on SLES 12 on SLES 12. SLES 12 (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 Podman zypper install -y podman Step 2 — […]

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How to Use Skaffold for Kubernetes Dev on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Use Skaffold for Kubernetes Dev on FreeBSD 12

Introduction How to Use Skaffold for Kubernetes Dev on FreeBSD 12 is a core administration task for any FreeBSD 12 server operator. FreeBSD 12 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 […]

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How to Configure GitLab CE on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure GitLab CE on Debian 9

Introduction Deploying configure gitlab ce on debian 9 on a Debian 9 Stretch 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. Prerequisites Ensure Debian 9 […]

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How to Set Up Kubernetes Ingress with Nginx Ingress Controller on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Kubernetes Ingress with Nginx Ingress Controller on RHEL 7

How to Set Up Kubernetes Ingress with Nginx Ingress Controller on RHEL 7 Kubernetes Ingress provides a powerful way to expose HTTP and HTTPS routes from outside the cluster to services running inside it. Rather than creating a separate LoadBalancer service for every application, an Ingress resource lets you define routing rules in one place, […]

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Common Problems 117963

Ubuntu 18.04 LTS Docker containers cannot reach the internet

🟡 Medium   ⏱ 5–30 min  Last verified: 15 November 2019 📖 ~1 min read Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance Criteria Rollback Plan Prevention & Hardening Related Errors & Cross-Refs References & Further […]

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How to Configure Podman Compose on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Podman Compose on RHEL 7

How to Configure Podman Compose on RHEL 7 Podman Compose is a Python script that implements the Docker Compose file specification against the Podman container engine. It allows you to use your existing docker-compose.yml files with Podman, either with the rootless model for increased security or as root on systems where Docker is not installed. […]

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How to Configure Fabric Deployment Tool on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Fabric Deployment Tool on Debian 9

Introduction This guide explains how to Configure Fabric Deployment Tool on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 install with the […]

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