Backup Recovery

How to Use numa_node_info for NUMA Topology on IBM AIX 7.1 — step-by-step IBM AIX 7.1 tutorial on Progressive Robot

How to Use numa_node_info for NUMA Topology 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 use numa_node_info for numa topology on ibm aix 7.1 […]

Read more
How to Configure Ceph Storage Cluster on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Ceph Storage Cluster on Debian 10

Introduction How to Configure Ceph Storage Cluster on Debian 10 is a fundamental operation for any administrator maintaining a Debian 10 Buster server. Debian 10 Buster 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 Debian 10. […]

Read more
Common Problems 114952

RHEL 8 Podman Image Pull Fails with TLS or Certificate Errors

🟠 High   ⏱ 5–30 min  Last verified: 14 January 2020 Affected versions: 8.6 8.7 8.8 8.9 8.10 📖 ~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 […]

Read more
How to Set Up Suricata IDS/IPS on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Set Up Suricata IDS/IPS on Debian 10

Introduction This guide explains how to Set Up Suricata IDS/IPS on Debian 10 on Debian 10 Buster. Debian Buster 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 10 install with the […]

Read more
How to Configure Distributed File System (DFS) on Windows Server 2019 — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Distributed File System (DFS) on Windows Server 2019

Introduction to Distributed File System on Windows Server 2019 Distributed File System (DFS) in Windows Server 2019 provides two complementary technologies: DFS Namespaces and DFS Replication. DFS Namespaces allows you to group shared folders located on different servers into one or more logically structured namespaces, giving users a unified virtual path such as \domainshared that […]

Read more
How to Install Keepalived for High Availability on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Install Keepalived for High Availability on Debian 9

Introduction This guide explains how to Install Keepalived for High Availability 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 […]

Read more
How to Configure Bonding Network Interfaces on Debian 10 — step-by-step Debian 10 tutorial on Progressive Robot

How to Configure Bonding Network Interfaces on Debian 10

Introduction Deploying configure bonding network interfaces on debian 10 on a Debian 10 Buster 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 You will […]

Read more
How to Configure Windows Server 2019 Helm Charts — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 Helm Charts

How to Configure Windows Server 2019 Helm Charts Helm is the package manager for Kubernetes, enabling you to define, install, and upgrade complex Kubernetes applications using reusable packages called charts. When working with Windows Server 2019 nodes in a Kubernetes cluster, Helm charts need to be configured with Windows-specific node selectors and tolerations to ensure […]

Read more
How to Set Up pf Firewall on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up pf Firewall on FreeBSD 12

Introduction How to Set Up pf Firewall 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 packet […]

Read more
Common Problems 112427

Windows Server 2019 – tcpip.sys DPC latency spikes degrade throughput – Fix and Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 12 January 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 […]

Read more
CHAT