DNS

How to Install Graylog on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Install Graylog on Oracle Linux 10

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying install graylog on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Install Graylog on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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Common Problems 124156

Oracle Linux 10 – kdump service fails because crashkernel memory reservation is insufficient – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 27 August 2025 Affected versions: Oracle Linux 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 Related Errors […]

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How to Set Up NFS File Sharing on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Set Up NFS File Sharing on RHEL 9

NFS (Network File System) is the standard protocol for sharing directories over a network between Linux and Unix systems. On RHEL 9, NFS is provided by the nfs-utils package and integrates with firewalld and SELinux out of the box. NFS allows multiple clients to mount and access a shared directory on a server as if […]

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FreeBSD 12 — powerdns_recursor — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — powerdns_recursor — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 27 August 2025 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: powerdns-recursor — cache pollution Related CVEs: CVE-2025-59023 CVE-2025-59024 Upstream summary: PowerDNS Team reports: It has been brought to our attention that the Recursor does not apply strict enough validation of […]

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Common Problems 124037

Oracle Linux 10 – SELinux Denies Custom Application Port Access – Label and Policy Fix

🟠 High   ⏱ 5–30 min  Last verified: 27 August 2025 Affected versions: Oracle Linux 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 Related Errors […]

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How to Schedule Backups with restic on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Schedule Backups with restic on Debian 13

Introduction How to Schedule Backups with restic on Debian 13 is a fundamental operation for any administrator maintaining a Debian 13 Trixie server. Debian 13 Trixie 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 12. […]

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Common Problems 119625

Debian 13 PostgreSQL Fails to Start After Minor Version Update

🟡 Medium   ⏱ 5–30 min  Last verified: 27 August 2025 📖 ~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 Kea DHCP on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Kea DHCP on RHEL 10

Introduction Setting up configure kea dhcp on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Kea DHCP on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in mind, and how to validate the […]

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How to Install Minio as S3-Compatible Storage on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Minio as S3-Compatible Storage on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up install minio as s3-compatible storage on Trixie leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Trixie freeze. Follow each step carefully and the resulting […]

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Common Problems 119535

Debian 13 UFW Conflicts With nftables Policy

🟡 Medium   ⏱ 5–30 min  Last verified: 27 August 2025 Affected versions: Debian 13 📖 ~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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