ubuntu

Common Problems 117070

Ubuntu 22.04 LTS MySQL Fails to Start Because AppArmor Denies Data Path

🟡 Medium   ⏱ 5–30 min  Last verified: 29 July 2022 📖 ~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 Set Up a Redis Server as a Session Handler for PHP on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How to Set Up a Redis Server as a Session Handler for PHP on Ubuntu 14.04

Redis is an open source key-value cache and storage system, also referred to as a data structure server for its advanced support for several data types, such as hashes, lists, sets, and bitmaps, amongst others. It also supports clustering, which makes it often used for highly-available and scalable environments. In this tutorial, we’ll see how to install and configure an external Redis server to be used as a session handler for a PHP application running on Ubuntu 14.04.

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Ubuntu 18.04 — networkd-dispatcher — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 18.04

Ubuntu 18.04 — networkd-dispatcher — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 29 July 2022 Affected versions: Ubuntu 18.04 (bionic) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5395-2 Related CVEs: https://launchpad.net/bugs/1971550 CVE-2022-29799 CVE-2022-29800 Upstream summary: USN-5395-1 fixed vulnerabilities in networkd-dispatcher. Unfortunately that update was incomplete and could introduce a regression. This update fixes the problem. We apologize […]

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Common Problems 119033

Ubuntu 14.04 LTS Docker permission denied to /var/run/docker.sock

🟡 Medium   ⏱ 5–30 min  Last verified: 28 July 2022 📖 ~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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Common Problems 116901

Ubuntu 22.04 LTS – apt update fails with Release file not valid yet – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 July 2022 Affected versions: Ubuntu 22.04 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 Plausible Analytics on Ubuntu 22.04 — step-by-step Docker tutorial on Progressive Robot

How To Install Plausible Analytics on Ubuntu 22.04

Plausible Analytics is an open-source, self-hosted web analytics application written in Elixir. It focuses on being simple, and privacy-focused. In this tutorial you will install the Plausible app and a few helper services using Docker Compose, then install Nginx and Certbot to set up a secure HTTPS reverse proxy.

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Common Problems 118135

Ubuntu 18.04 Unattended-Upgrades Stuck and Never Completes

🟡 Medium   ⏱ 5–30 min  Last verified: 26 July 2022 📖 ~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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Common Problems 116912

Ubuntu 22.04 no sound output on speakers or headset

🟡 Medium   ⏱ 5–30 min  Last verified: 26 July 2022 📖 ~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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Ubuntu 22.04 — shim — multiple vulnerabilities (11 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 22.04

Ubuntu 22.04 — shim — multiple vulnerabilities (11 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 July 2022 Affected versions: Ubuntu 22.04 (jammy) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6355-1 Related CVEs: CVE-2022-28737 CVE-2021-3695 CVE-2021-3696 CVE-2021-3697 CVE-2021-3981 CVE-2022-28733 CVE-2022-28734 CVE-2022-28735  +3 more Upstream summary: Daniel Axtens discovered that specially crafted images could cause a heap-based out-of-bonds write. A local […]

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