ubuntu

Common Problems 117906

Ubuntu 18.04 LTS – apt update fails with Release file not valid yet – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 19 June 2021 Affected versions: Ubuntu 18.04 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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Ubuntu 20.04 — ring — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 20.04

Ubuntu 20.04 — ring — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 19 June 2021 Affected versions: Ubuntu 20.04 (focal) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-6422-1 Related CVEs: CVE-2021-37706 CVE-2021-43299 CVE-2021-43300 CVE-2021-43301 CVE-2021-43302 CVE-2021-43303 CVE-2021-43804 CVE-2021-43845  +12 more Upstream summary: It was discovered that Ring incorrectly handled certain inputs. If a user or an automated […]

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Создание и настройка центра сертификации (ЦС) в Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Создание и настройка центра сертификации (ЦС) в Ubuntu 20.04

Центр сертификации (ЦС) — это служба, отвечающая за выдачу цифровых сертификатов удостоверения личности в Интернете. Хотя публичные ЦС часто используются для подтверждения подлинности сайтов и других общедоступных служб, для…

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How To Install the Latest MySQL on Ubuntu 16.04 — step-by-step Linux tutorial on Progressive Robot

How To Install the Latest MySQL on Ubuntu 16.04

MySQL is a prominent open source database management system used to store and retrieve data for a wide variety of popular applications. MySQL is the M in the LAMP stack, a commonly used set of open source software that also includes Linux, the Apache web server, and the PHP programming language.

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How To Install Prometheus using Docker on Ubuntu 14.04 — step-by-step Docker tutorial on Progressive Robot

How To Install Prometheus using Docker on Ubuntu 14.04

Prometheus is an open source monitoring system and time series database. It addresses many aspects of monitoring such as the generation and collection of metrics, graphing the resulting data on dashboards, and alerting on anomalies. To achieve this, it offers a variety of components that are run separately but used in combination.

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How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Install Elasticsearch, Logstash, and Kibana (ELK Stack) on Ubuntu 14.04

In this tutorial, we will go over the installation of the Elasticsearch ELK Stack on Ubuntu 14.04—that is, Elasticsearch 2.2.x, Logstash 2.2.x, and Kibana 4.4.x. We will also show you how to configure it to gather and visualize the syslogs of your systems in a centralized location, using Filebeat 1.0.x. Logstash is an open source tool for collecting, parsing, and storing logs for future use. Kibana 4 is a web interface that can be used to search and view the logs that Logstash has indexed.

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Cómo instalar y utilizar Ansible en Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

Cómo instalar y utilizar Ansible en Ubuntu 20.04

Los sistemas de administración de configuraciones están diseñados para simplificar el proceso de control de un gran número de servidores, para los administradores y los equipos de operaciones. Le permiten controlar muchos sistemas diferentes de forma automatizada desde una…

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Ubuntu 16.04 — jasper — multiple vulnerabilities (20 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — jasper — multiple vulnerabilities (20 CVEs) — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 17 June 2021 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-4688-1 Related CVEs: CVE-2017-9782 CVE-2018-18873 CVE-2018-19542 CVE-2020-27828 CVE-2015-5203 CVE-2015-5221 CVE-2016-10248 CVE-2016-10250  +12 more Upstream summary: It was discovered that Jasper incorrectly certain files. An attacker could possibly use this issue […]

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How To Move an Nginx Web Root to a New Location on Ubuntu 20.04 — step-by-step Linux tutorial on Progressive Robot

How To Move an Nginx Web Root to a New Location on Ubuntu 20.04

On Ubuntu, by default, the Nginx web server stores its documents in `/var/www/html`, which is typically located on the root filesystem with the rest of the operating system. Sometimes, though, it’s helpful to move the document root to another location, such as a separate mounted filesystem.

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