Containers

How to Set Up a Kubernetes Dashboard on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Set Up a Kubernetes Dashboard on SLES 12

Introduction This tutorial covers How to Set Up a Kubernetes Dashboard 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 — Disable Swap swapoff -a sed -i ‘/ […]

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How to Install Kubernetes with kubeadm on SLES 12 — step-by-step SUSE Linux Enterprise 12 tutorial on Progressive Robot

How to Install Kubernetes with kubeadm on SLES 12

Introduction This tutorial covers How to Install Kubernetes with kubeadm 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 — Disable Swap swapoff -a sed -i ‘/ swap […]

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How to Set Up a Local Kubernetes Dev Cluster with Minikube on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up a Local Kubernetes Dev Cluster with Minikube on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up set up a local kubernetes dev cluster with minikube 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. […]

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How to Deploy an Application to Kubernetes on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Deploy an Application to Kubernetes on FreeBSD 13

Introduction FreeBSD 13 is a UNIX-derived operating system renowned for its network stack performance, ZFS integration, and Jail isolation primitives. Setting up deploy an application to kubernetes on freebsd 13 on FreeBSD 13 follows the rc.conf/service(8) paradigm rather than systemd, which means enabling a service and configuring its startup options are done differently from any […]

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How to Configure Kubernetes RBAC on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Kubernetes RBAC on FreeBSD 13

Introduction This guide explains how to Configure Kubernetes RBAC on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained privilege […]

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How to Install Netdata Monitoring on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Netdata Monitoring on Debian 9

Introduction This guide explains how to Install Netdata Monitoring 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 standard […]

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How to Set Up a Private Docker Registry on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Set Up a Private Docker Registry on FreeBSD 13

Introduction How to Set Up a Private Docker Registry 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 […]

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How to Build Docker Images with Multi-Stage Builds on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Build Docker Images with Multi-Stage Builds on FreeBSD 13

Introduction Deploying build docker images with multi-stage builds on freebsd 13 on a FreeBSD 13 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 Compose on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Docker Compose on RHEL 7

How to Install Docker Compose on RHEL 7 Docker Compose is a tool for defining and running multi-container applications using a single YAML configuration file. Rather than issuing long docker run commands manually for each service, you describe your entire application stack — web server, database, cache, and more — in a docker-compose.yml file and […]

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Common Problems 117544

Ubuntu 20.04 LTS Docker Permission Denied on /var/run/docker.sock

🟡 Medium   ⏱ 5–30 min  Last verified: 22 September 2021 📖 ~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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