How To Move a MySQL Data Directory to a New Location on Ubuntu 16.04
Whether you’re adding more space for data or evaluating ways to optimize database performance, this tutorial will guide you through relocating MySQL’s data directory.
How To Configure a Galera Cluster with MariaDB 10.1 on Ubuntu 16.04 Servers
Clustering adds high availability to your database at the hardware level by distributing changes to different servers. In the event that one of the instances fails, others are quickly available to continue serving…
Ubuntu 16.04 — sane-backends — multiple vulnerabilities (8 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 12 September 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-4470-1 Related CVEs: CVE-2017-6318 CVE-2020-12861 CVE-2020-12862 CVE-2020-12863 CVE-2020-12864 CVE-2020-12865 CVE-2020-12866 CVE-2020-12867 Upstream summary: Kritphong Mongkhonvanit discovered that sane-backends incorrectly handled certain packets. A remote attacker could possibly use this issue […]
Ubuntu 16.04 apt lock errors during updates
🟡 Medium ⏱ 5–30 min Last verified: 11 September 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 […]
How To Secure Apache with Let’s Encrypt on Ubuntu 16.04
This tutorial will show you how to set up a free TLS/SSL certificate from Let’s Encrypt on a Ubuntu 16.04 server running Apache as web server. TLS certificates are used within web servers to encrypt the traffic between server and client, providing extra security for users accessing your application.
Ubuntu 16.04 LTS MySQL service fails with InnoDB errors
🟡 Medium ⏱ 5–30 min Last verified: 10 September 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 […]
GRUB Rescue Prompt After Kernel or Disk Changes
🟡 Medium ⏱ 5–30 min Last verified: 10 September 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 […]
Grub Rescue Prompt After Update
🟡 Medium ⏱ 5–30 min Last verified: 9 September 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 […]
Ubuntu 16.04 LTS SSH login denied with Permission denied (publickey)
🟠 High ⏱ 5–30 min Last verified: 7 September 2020 Affected versions: 16.04 📖 ~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 […]
Ubuntu 16.04 — ldns — multiple vulnerabilities (5 CVEs) — patch and remediation guide
🟡 Medium ⏱ 10–30 min Last verified: 6 September 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5257-1 Related CVEs: CVE-2020-19860 CVE-2020-19861 CVE-2014-3209 CVE-2017-1000231 CVE-2017-1000232 Upstream summary: It was discovered that ldns incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. […]
