Firewall

How to Deploy a Spring Boot Application on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Deploy a Spring Boot Application on Oracle Linux 10

Introduction Oracle Linux 10 ships with a stable, security-hardened base that makes deploying deploy a spring boot application on oracle linux 10 both straightforward and auditable. This tutorial covers the complete procedure for how to Deploy a Spring Boot Application on Oracle Linux 10, including dnf module streams where applicable, systemd unit management, and the […]

Read more
How to Configure Nginx as a Reverse Proxy on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure Nginx as a Reverse Proxy on Oracle Linux 10

Introduction This tutorial demonstrates how to Configure Nginx as a Reverse Proxy on Oracle Linux 10 on Oracle Linux 10. 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 10 system […]

Read more
How to Configure PostgreSQL Connection Pooling with PgBouncer on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure PostgreSQL Connection Pooling with PgBouncer on Debian 13

Introduction This guide explains how to Configure PostgreSQL Connection Pooling with PgBouncer on Debian 13 on Debian 13 Trixie. Debian Trixie 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 13 install […]

Read more
Common Problems 113980

RHEL 10 – SELinux AVC denials break custom web application after update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 2 September 2025 Affected versions: RHEL 10.0 RHEL 10.1 📖 ~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 […]

Read more
Common Problems 114445

RHEL 9: NetworkManager Interface Not Coming Up After Reboot

🟡 Medium   ⏱ 5–30 min  Last verified: 2 September 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 […]

Read more
How to Configure Dovecot IMAP Server on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Configure Dovecot IMAP Server on Debian 13

Introduction Debian 13 Trixie is built around the ethos of stability and free software. Setting up configure dovecot imap server 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 configuration […]

Read more
How to Install Kibana on Debian 13 — step-by-step Debian 13 tutorial on Progressive Robot

How to Install Kibana on Debian 13

Introduction Deploying install kibana on a Debian 13 Trixie 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 need a registered Debian 13 […]

Read more
How to Configure BGP with BIRD on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure BGP with BIRD on Oracle Linux 10

Introduction This tutorial demonstrates how to Configure BGP with BIRD on Oracle Linux 10 on Oracle Linux 10. 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 10 system with the […]

Read more
Common Problems 113993

RHEL 10 – LVM thin pool reaches 100 percent and writes fail – Fix & Prevention

🔴 Critical   ⏱ 5–30 min  Last verified: 1 September 2025 Affected versions: RHEL 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 & […]

Read more
How to Install Composer on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Install Composer on Oracle Linux 10

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

Read more
CHAT