How To Install nginx on CentOS 6 with yum
This articles covers how to install nginx, a web server, on a CentOS virtual server. This can be done with the Centos package installer, yum.
VMware ESXi 6.7 — ovf — multiple ESXi vulnerabilities (2 CVEs) — VIB / vLCM patch and remediation guide
🔴 Critical ⏱ 30–120 min Last verified: 25 May 2026 Affected versions: VMware ESXi 6.7 📖 ~4 min read • Source: VMware advisory VMSA-2020-0026 Related CVEs: CVE-2020-4004 CVE-2020-4005 Fixed image profile / build: ESXi670-202011301-SG Upstream summary: An issue in OVF descriptor parsing on ESXi (CVE-2020-4004 / CVE-2020-4005) lets a malicious actor with local access […]
How To Install and Configure Varnish with Apache on Ubuntu 12.04
Varnish is an HTTP accelerator and a useful tool for speeding up a server, especially during a times when there is high traffic to a site. It works by redirecting visitors to static pages whenever possible and only drawing on the virtual private server itself if there is a need for an active process. This tutorial covers setting up Varnish with Apache on Ubuntu 12.04.
The CSS text-shadow property
A quick snippet on using the text-shadow property in CSS.
Ubuntu 16.04 — whoopsie — multiple vulnerabilities (6 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 26 October 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4450-1 Related CVEs: CVE-2020-11937 CVE-2020-12135 CVE-2020-15570 https://launchpad.net/bugs/1850608 CVE-2019-11484 CVE-2019-11476 Upstream summary: Seong-Joong Kim discovered that Whoopsie incorrectly handled memory. A local attacker could use this issue to cause Whoopsie to […]
Apriel-1.5-15B-Thinker, Open-Weight Multimodal Reasoning
Apriel-1.5-15B-Thinker is an open-weight, 15-billion-parameter multimodal reasoning model from ServiceNow, deployable on a single GPU.
Oracle Linux 8 — openssl security, bug fix, and — enhancement update — new behaviour and fixes (ELSA-2019-3700)
🟢 Low ⏱ 5–15 min Last verified: 25 October 2020 Affected versions: Oracle Linux 8 📖 ~4 min read • Source: ELSA advisory ELSA-2019-3700 Related CVEs: CVE-2018-0734 CVE-2018-0735 CVE-2019-1543 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification […]
Ubuntu 20.04 Stuck on Boot Splash After Updates
🟡 Medium ⏱ 5–30 min Last verified: 25 October 2020 📖 ~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 […]
RHEL 8 Subscription-Manager Shows Repositories Disabled Unexpectedly
🟠 High ⏱ 5–30 min Last verified: 25 October 2020 Affected versions: 8.4 8.5 8.6 8.7 8.8 8.9 8.10 📖 ~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 […]
Systemd service fails to start with unit errors
🟡 Medium ⏱ 5–30 min Last verified: 25 October 2020 📖 ~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 […]
