Storage Disk

How to Set Up Checksum Monitoring with AIDE on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Set Up Checksum Monitoring with AIDE on RHEL 7

File integrity monitoring is a cornerstone of host-based intrusion detection. AIDE — Advanced Intrusion Detection Environment — creates a cryptographic baseline of your file system and compares the current state against that baseline to detect unauthorized changes. When an attacker modifies a system binary, alters a configuration file, or installs a rootkit, AIDE reports exactly […]

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How to Install Jaeger for Distributed Tracing on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install Jaeger for Distributed Tracing on RHEL 7

How to Install Jaeger for Distributed Tracing on RHEL 7 As systems evolve from monoliths to microservices, understanding the path of a single request across dozens of services becomes increasingly difficult using traditional logs and metrics alone. Jaeger is an open-source distributed tracing platform originally developed by Uber Technologies and now hosted by the Cloud […]

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How to Configure Kubernetes RBAC on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Kubernetes RBAC on FreeBSD 12

Introduction How to Configure Kubernetes RBAC 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 filtering, […]

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How to Set Up SSH Key Authentication on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Set Up SSH Key Authentication on FreeBSD 12

Introduction This guide explains how to Set Up SSH Key Authentication on FreeBSD 12 on FreeBSD 12. 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 […]

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Common Problems 115501

journalctl Missing Historical Logs Due to Non-Persistent Journald

🟡 Medium   ⏱ 5–30 min  Last verified: 9 January 2020 📖 ~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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Common Problems 112955

Windows Server 2016 Storage Deduplication Jobs Saturating CPU and Starving Workloads – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 9 January 2020 Affected versions: Windows Server 2016 📖 ~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 Use NIS+ on IBM AIX 7.2 — step-by-step IBM AIX 7.2 tutorial on Progressive Robot

How to Use NIS+ on IBM AIX 7.2

Introduction IBM AIX 7.2 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 7.2 introduces enhanced virtualization, security hardening, and cloud integration features. This guide covers how to use nis+ on ibm aix 7.2 on IBM AIX […]

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How to Configure Prometheus Node Exporter on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Configure Prometheus Node Exporter on FreeBSD 12

Introduction This guide explains how to Configure Prometheus Node Exporter on FreeBSD 12 on FreeBSD 12. 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 […]

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Common Problems 115090

Custom unit changes ignored because daemon-reload not run

🟡 Medium   ⏱ 5–30 min  Last verified: 8 January 2020 📖 ~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 Set Up iSCSI Initiator on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Set Up iSCSI Initiator on Windows Server 2012 R2

How to Set Up iSCSI Initiator on Windows Server 2012 R2 The iSCSI Initiator allows Windows Server 2012 R2 to connect to iSCSI storage targets — shared storage devices that expose block-level storage over a standard IP network. iSCSI is widely used for connecting servers to SAN (Storage Area Network) devices, NAS appliances with iSCSI […]

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