Accurate timekeeping has become a critical component of modern software deployments. Whether it’s making sure logs are recorded in the right order or database updates are applied correctly, out-of-sync time can cause errors, data corruption, and other hard to debug…
🟡 Medium ⏱ 5–30 min Last verified: 11 March 2023 Affected versions: Ubuntu 16.04 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 […]
GitOps, as proposed by Weaverworks in a 2017 blog post, uses Git as a “single source of truth” for CI/CD processes, integrating code changes that happen in your Git repository. In this tutorial, you will run through a demonstration of two tools that you can use to set up your own cloud-based GitOps CI/CD system: The Continuous Integration tool CircleCI and Argo CD, a declarative Continuous Delivery tool.
SSH-key-based authentication provides a more secure alternative to password-based authentication. In this tutorial we’ll learn how to set up SSH key-based authentication on an Ubuntu 16.04 installation.
WordPress is the most popular CMS (content management system) on the internet. It allows you to easily set up flexible blogs and websites on top of a MySQL backend with PHP processing. WordPress has seen incredible adoption and is a great choice for getting a website up and…
🟡 Medium ⏱ 10–30 min Last verified: 2 March 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5866-1 Related CVEs: CVE-2015-9543 CVE-2017-18191 CVE-2020-17376 CVE-2021-3654 CVE-2022-37394 CVE-2019-14433 Upstream summary: It was discovered that Nova did not properly manage data logged into the log file. An attacker with read […]
🟡 Medium ⏱ 10–30 min Last verified: 1 March 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-6590-1 Related CVEs: CVE-2018-1311 CVE-2023-37536 CVE-2016-2099 CVE-2016-4463 CVE-2017-12627 Upstream summary: It was discovered that Xerces-C++ was not properly handling memory management operations when parsing XML data containing external DTDs, which […]
In this tutorial, you’ll install and configure Shiny and the open-source version of Shiny Server on a server running Ubuntu 16.04, secure the connection to the Shiny server using a Let’s Encrypt digital certificate and then install an additional package to run interactive R Markdown documents.
🟡 Medium ⏱ 10–30 min Last verified: 25 February 2023 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read • Source: Ubuntu Security Notice USN-5721-1 Related CVEs: CVE-2022-2476 CVE-2018-19840 CVE-2018-19841 CVE-2016-10169 CVE-2018-6767 Upstream summary: It was discovered that WavPack was not properly performing checks when dealing with memory. If a user were tricked into […]
Siege is a configurable benchmarking and testing tool that, when combined with Sproxy and Firefox, provides a complete platform for benchmarking websites, finding bottlenecks, and planning meaningful network, server, and website upgrades.
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