2021 - Page 638 of 759

Common Problems 121703

Debian 9: OOM killer terminates Java service under memory pressure

🔴 Critical   ⏱ 5–30 min  Last verified: 1 March 2021 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 & […]

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Common Problems 117895

Ubuntu 18.04 LTS – apt update fails because dpkg lock is held

🟠 High   ⏱ 5–30 min  Last verified: 1 March 2021 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

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How to Install Cassandra on Oracle Linux 8 — step-by-step Oracle Linux 8 tutorial on Progressive Robot

How to Install Cassandra on Oracle Linux 8

Introduction How to Install Cassandra on Oracle Linux 8 on Oracle Linux 8 provides administrators with a robust, enterprise-ready workflow that integrates cleanly with systemd, SELinux, firewalld, and the modern AppStream module system. In this tutorial we will walk through every step required, from package installation to verification, so that the resulting configuration is reproducible […]

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FreeBSD 12 — py310-numpy — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — py310-numpy — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 March 2021 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: py-numpy — Missing return-value validation of the function PyArray_DescrNew Related CVEs: CVE-2021-41495 Upstream summary: Numpy reports: At most call-sites for PyArray_DescrNew, there are no validations of its return, but an […]

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Node JS Environment Setup - Node.js installation — step-by-step Javascript tutorial on Progressive Robot

Node JS Environment Setup – Node.js installation

URL: https://www.progressiverobot.com/node-js-environment-setup-node-js-installation/ In my previous post, we have discussed about "[Introduction to Node JS Platform](/community/tutorials/introduction-to-node-js-basics "Introduction to Node JS – Node.js Basics")". Now we have some idea about what is Node JS and what is not Node JS. In this post, we will discuss about "How to setup Node JS Base Environment" in Windows OS […]

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Ubuntu 20.04 — xdg-utils — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — xdg-utils — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 1 March 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4649-2 Related CVEs: https://launchpad.net/bugs/1909941 CVE-2020-27748 Upstream summary: USN-4649-1 fixed vulnerabilities in xdg-utils. That update caused a regression by removing the –attach functionality in thunderbird and others applications. This update fix […]

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How To Securely Set Up Shipyard 2.0.10 with TLS on CoreOS — step-by-step Docker tutorial on Progressive Robot

How To Securely Set Up Shipyard 2.0.10 with TLS on CoreOS

In this guide, we’ll be setting up Shipyard 2.0.10, a Docker management tool, on a single CoreOS server and securing Docker with a TLS certificate to ensure that only authorized clients may connect to it. TLS Stands for *Transport Layer Security*. It’s used to encrypt data as it is transported from the client to the server and back again. In our case, we’ll use it to encrypt our connection to the Docker host, and Docker’s connection to Shipyard.

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