ubuntu

Common Problems 116958

Ubuntu 22.04 LTS – cloud-init package stage times out on first boot – Fix & Prevention

🟡 Medium   ⏱ 5–30 min  Last verified: 10 November 2022 Affected versions: Ubuntu 22.04 LTS (Jammy) 📖 ~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 […]

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Ubuntu 20.04 — connman — multiple vulnerabilities (9 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — connman — multiple vulnerabilities (9 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 10 November 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6236-1 Related CVEs: CVE-2021-26675 CVE-2021-26676 CVE-2021-33833 CVE-2022-23096 CVE-2022-23097 CVE-2022-23098 CVE-2022-32292 CVE-2022-32293  +1 more Upstream summary: It was discovered that ConnMan could be made to write out of bounds. A remote […]

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Common Problems 118623

Ubuntu 16.04 LTS OpenSSL mismatch breaks legacy application startup

🟠 High   ⏱ 5–30 min  Last verified: 9 November 2022 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 […]

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Common Problems 116923

Ubuntu 22.04 LTS – DNS resolution fails with systemd-resolved stub issues – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 November 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 Use Ansible to Set Up a Production Elasticsearch Cluster — step-by-step Linux tutorial on Progressive Robot

How To Use Ansible to Set Up a Production Elasticsearch Cluster

In this tutorial, we’ll show you how to use Ansible, a configuration management tool, to install a production Elasticsearch cluster on Ubuntu 14.04 or CentOS 7 in a cloud server environment. We will build upon the Ansible and Tinc VPN tutorial to ensure that your Elasticsearch nodes will be secure from computers outside of your own network.

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How To Use Apache HTTP Server As Reverse-Proxy Using mod_proxy Extension — step-by-step Linux tutorial on Progressive Robot

How To Use Apache HTTP Server As Reverse-Proxy Using mod_proxy Extension

In this the cloud provider article, we are going to see set up Apache on Ubuntu 13 and use it as a reverse-proxy to welcome incoming connections and redirect them to application server(s) running on the same network. For this purpose, we are going to use and work with the mod_proxy extension and several other related Apache modules.

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Ubuntu 20.04 — nautilus — vulnerability — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — nautilus — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 8 November 2022 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5786-1 Related CVEs: CVE-2022-37290 Upstream summary: It was discovered that GNOME Files incorrectly handled certain filenames. An attacker could possibly use this issue to cause GNOME Files to crash, leading […]

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How To Set Up a Video Streaming Server using Nginx-RTMP on Ubuntu 22.04 — step-by-step Linux tutorial on Progressive Robot

How To Set Up a Video Streaming Server using Nginx-RTMP on Ubuntu 22.04

There are many use cases for streaming video. Service providers such as Twitch have become very popular for handling the community management aspects of streaming, and free software such as OBS is widely used for combining video from multiple stream sources. While these platforms are very powerful, in some cases you may want to be able to host a stream that does not rely on other service providers. In this tutorial, you will learn how to use Nginx to host an independent RTMP video stream.

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