Networking

Common Problems 117949

Ubuntu 18.04 LTS SSH Login Fails with Permission Denied

🟠 High   ⏱ 5–30 min  Last verified: 29 April 2021 Affected versions: 18.04 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 Configure Oracle Linux 8 in Google Cloud — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Oracle Linux 8 in Google Cloud

Introduction Oracle Linux 8 ships with a stable, security-hardened base that makes deploying configure oracle linux 8 in google cloud both straightforward and auditable. This tutorial covers the complete procedure for how to Configure Oracle Linux 8 in Google Cloud, including dnf module streams where applicable, systemd unit management, and the firewalld rules required for […]

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How to Set Up Consul on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Consul on Oracle Linux 8

Introduction This tutorial demonstrates how to Set Up Consul on Oracle Linux 8 on Oracle Linux 8. 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 8 system with the default […]

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Common Problems 117627

Ubuntu 20.04 LTS – rsyslog forwarding stops after remote TLS policy update – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 27 April 2021 Affected versions: Ubuntu 20.04 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 Tune Kernel Parameters with sysctl on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Tune Kernel Parameters with sysctl on Oracle Linux 8

Introduction Setting up tune kernel parameters with sysctl on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Tune Kernel Parameters with sysctl on Oracle Linux 8, with all the commands you need, the SELinux and firewalld […]

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How to Configure FIPS 140-2 Mode on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure FIPS 140-2 Mode on Oracle Linux 8

Introduction Setting up configure fips 140-2 mode on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure FIPS 140-2 Mode on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to […]

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How to Set Up Log Rotation on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Set Up Log Rotation on Oracle Linux 8

Introduction How to Set Up Log Rotation on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration […]

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Common Problems 117610

Ubuntu 20.04 LTS DPKG Interrupted State Blocks Install

🟡 Medium   ⏱ 5–30 min  Last verified: 24 April 2021 📖 ~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 Horizontal Pod Autoscaling on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Configure Horizontal Pod Autoscaling on Oracle Linux 8

Introduction Setting up configure horizontal pod autoscaling on oracle linux 8 on a Oracle Linux 8 server is a common task for system administrators, DevOps engineers, and site reliability engineers. This guide explains how to Configure Horizontal Pod Autoscaling on Oracle Linux 8, with all the commands you need, the SELinux and firewalld considerations to […]

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How to Set Up Concourse CI on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Concourse CI on Debian 9

Introduction Deploying set up concourse ci on debian 9 on a Debian 9 Stretch 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 Before you […]

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