Capacity Planning

Common Problems 113911

RHEL 10 – RPM database corruption after interrupted upgrade – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 24 June 2026 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 & […]

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Common Problems 115998

GRUB update leaves system booting old kernel

🟡 Medium   ⏱ 5–30 min  Last verified: 22 June 2026 Affected versions: Ubuntu 26.04 LTS 📖 ~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 GitLab CE on RHEL 9 — step-by-step RHEL 9 tutorial on Progressive Robot

How to Install GitLab CE on RHEL 9

GitLab Community Edition (CE) is a complete, self-hosted DevOps platform that combines Git repository hosting, issue tracking, CI/CD pipelines, container registry, and code review in a single application. Hosting GitLab internally gives organisations full control over their source code without relying on third-party services, making it the preferred choice for teams with data sovereignty requirements […]

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Common Problems 115926

Initramfs or /boot Space Exhaustion During Kernel Updates

🟡 Medium   ⏱ 5–30 min  Last verified: 19 June 2026 📖 ~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 Install Packer on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install Packer on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying install packer both straightforward and auditable. This tutorial covers the complete procedure for how to Install Packer on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites Before you begin, ensure you […]

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How to Configure Filesystem Quotas on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure Filesystem Quotas on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying configure filesystem quotas both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Filesystem Quotas on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. Prerequisites Before you begin, […]

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How to Install MetalLB on RHEL 10 Kubernetes — step-by-step RHEL 10 tutorial on Progressive Robot

How to Install MetalLB on RHEL 10 Kubernetes

Introduction This tutorial demonstrates how to Install MetalLB on RHEL 10 Kubernetes on RHEL 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 RHEL 10 system with the default AppStream repositories enabled. […]

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How to Configure Network QoS with tc on Oracle Linux 10 — step-by-step Oracle Linux 10 tutorial on Progressive Robot

How to Configure Network QoS with tc on Oracle Linux 10

Introduction This tutorial demonstrates how to Configure Network QoS with tc 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 […]

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How to Use Network-Bound Disk Encryption (NBDE) on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Use Network-Bound Disk Encryption (NBDE) on RHEL 10

Introduction RHEL 10 ships with a stable, security-hardened base that makes deploying use network-bound disk encryption (nbde) both straightforward and auditable. This tutorial covers the complete procedure for how to Use Network-Bound Disk Encryption (NBDE) on RHEL 10, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for network-facing services. […]

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How to Configure PostgreSQL Connection Pooling with PgBouncer on RHEL 10 — step-by-step RHEL 10 tutorial on Progressive Robot

How to Configure PostgreSQL Connection Pooling with PgBouncer on RHEL 10

Introduction Setting up configure postgresql connection pooling with pgbouncer on a RHEL 10 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure PostgreSQL Connection Pooling with PgBouncer on RHEL 10, with all the commands you need, the SELinux and firewalld considerations to keep in […]

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