October 2020 - Page 60 of 69

How To Install and Configure Drone on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install and Configure Drone on Ubuntu 16.04

Drone is a popular continuous integration and delivery platform built in Go. It integrates with many popular version control repository services like GitHub, GitLab, and Bitbucket to watch for code changes and automatically build and test changes as they…

Read more
How To Define and Use Handlers in Ansible Playbooks — step-by-step Linux tutorial on Progressive Robot

How To Define and Use Handlers in Ansible Playbooks

In a nutshell, handlers are special tasks that only get executed when triggered via the notify directive. Handlers are executed at the end of the play, once all tasks are finished. In Ansible, handlers are typically used to start, reload, restart, and stop services. In this guide, learn more about how to define and use handlers in Ansible playbooks.

Read more
How to Monitor Docker with cAdvisor on FreeBSD 12 — step-by-step FreeBSD 12 tutorial on Progressive Robot

How to Monitor Docker with cAdvisor on FreeBSD 12

Introduction Deploying monitor docker with cadvisor on freebsd 12 on a FreeBSD 12 machine differs from Linux in several important ways: packages come from the FreeBSD Ports Collection or the binary pkg repository, services are registered in /etc/rc.conf via sysrc(8), and firewall rules are written in pf.conf(5) syntax. This tutorial stays entirely within the standard […]

Read more
How To Create an SSH CA to Validate Hosts and Clients with Ubuntu — step-by-step Linux tutorial on Progressive Robot

How To Create an SSH CA to Validate Hosts and Clients with Ubuntu

When dealing with an extensive infrastructure and many team members, managing SSH keys for authentication can become unwieldy. However, SSH can utilize certificates in order to sign and validate user and host credentials to allow a seamless experience. In this guide, we’ll learn how to set this up using three Ubuntu 12.04 VPS instances.

Read more
Oracle Linux 8 — curl — security and stability fixes — required update — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — curl — security and stability fixes — required update (ELSA-2020-4599)

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2020-4599 Related CVEs: CVE-2020-8177 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

Read more
Alpine Linux edge — axel — vulnerability — patch and remediation guide — diagnosis and fix on Alpine Linux edge

Alpine Linux edge — axel — vulnerability — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Alpine Linux edge / fixed in 2.17.8-r0 📖 ~4 min read  •  Source: Alpine secdb entry — axel 2.17.8-r0 Related CVEs: CVE-2020-13614 Upstream summary: Alpine main repository for vedge ships axel 2.17.8-r0 which addresses CVE-2020-13614. Table of contents Symptom & Impact Environment […]

Read more
Common Problems 124173

Oracle UEK Module Missing After Dracut Initramfs Rebuild

🟠 High   ⏱ 5–30 min  Last verified: 20 May 2026 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 […]

Read more
Common Problems 121521

Debian 9 – resolv.conf Keeps Reverting and DNS Fails – Resolver Control

🟠 High   ⏱ 5–30 min  Last verified: 19 May 2026 Affected versions: Debian 9 📖 ~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
Common Problems 118022

Kernel Panic After Dist-upgrade

🟡 Medium   ⏱ 5–30 min  Last verified: 20 May 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 […]

Read more
CHAT