Storage Disk

How to Set Up StrongSwan IKEv2 VPN on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Set Up StrongSwan IKEv2 VPN on IBM AIX 7.1

Introduction IBM AIX 7.1 is the latest release of IBM’s enterprise-grade UNIX operating system, running on IBM Power Systems hardware. Known for its reliability, security, and performance in mission-critical environments, AIX 7.1 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to set up strongswan ikev2 vpn on ibm aix 7.1 […]

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How to Install Prometheus and Grafana on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Prometheus and Grafana on Oracle Linux 8

Introduction This tutorial demonstrates how to Install Prometheus and Grafana on Oracle Linux 8 on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with the […]

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How to Set Up Software RAID with mdadm on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Software RAID with mdadm on RHEL 7

How to Set Up Software RAID with mdadm on RHEL 7 Software RAID (Redundant Array of Independent Disks) allows you to combine multiple physical disks into a single logical device that provides redundancy, improved performance, or both — without requiring a dedicated hardware RAID controller. On RHEL 7, the mdadm utility is the standard tool […]

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How to Configure Docker Daemon TLS Encryption on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Configure Docker Daemon TLS Encryption on RHEL 7

How to Configure Docker Daemon TLS Encryption on RHEL 7 By default, the Docker daemon on RHEL 7 listens only on a Unix socket at /var/run/docker.sock, which limits access to processes on the same host. When you need to manage Docker remotely — from a CI server, a centralised management host, or a deployment automation […]

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How to Set Up Oracle Linux 8 in Oracle Cloud Infrastructure — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Oracle Linux 8 in Oracle Cloud Infrastructure

Introduction This tutorial demonstrates how to Set Up Oracle Linux 8 in Oracle Cloud Infrastructure on Oracle Linux 8. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered Oracle Linux 8 system with […]

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Common Problems 112468

Windows Server 2019 — Post-Update Boot Loop Triggered by Incompatible Storage Driver — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 November 2020 Affected versions: Windows Server 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 […]

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How to Install HAProxy on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install HAProxy on Oracle Linux 8

Introduction Setting up install haproxy on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Install HAProxy on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and […]

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How to Configure Drone CI on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Drone CI on Debian 9

Introduction This guide explains how to Configure Drone CI 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 Windows Server 2019 SR-IOV — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Set Up Windows Server 2019 SR-IOV

How to Set Up Windows Server 2019 SR-IOV Single Root I/O Virtualization (SR-IOV) is a PCI-SIG specification that allows a single physical PCIe network adapter to present multiple virtual functions (VFs) directly to virtual machines, bypassing the Hyper-V virtual switch and the software network stack. This provides near-native network performance in VMs with ultra-low latency […]

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Common Problems 117488

Ubuntu 20.04 LTS – GRUB rescue prompt shows unknown filesystem

🔴 Critical   ⏱ 5–30 min  Last verified: 26 November 2020 Affected versions: Ubuntu 20.04 LTS Ubuntu 20.04 Ubuntu 20.04.6 📖 ~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 […]

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