February 2021 - Page 18 of 57

JPA Annotations - Hibernate Annotations — step-by-step DevOps tutorial on Progressive Robot

JPA Annotations – Hibernate Annotations

URL: https://www.progressiverobot.com/jpa-hibernate-annotations/ JPA annotations are used in mapping java objects to the database tables, columns etc. Hibernate is the most popular implement of JPA specification and provides some additional annotations. Today we will look into JPA annotations as well as Hibernate annotations with brief code snippets. JPA Annotations – Hibernate Annotations !JPA Annotations, Hibernate Annotations […]

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Oracle Linux 8 — bind — vulnerability — patch and remediation guide — diagnosis and fix on Oracle Linux 8

Oracle Linux 8 — bind — vulnerability — patch and remediation guide (ELSA-2022-7790)

🟡 Medium   ⏱ 10–30 min  Last verified: 20 February 2021 Affected versions: Oracle Linux 8 📖 ~4 min read  •  Source: ELSA advisory ELSA-2022-7790 Related CVEs: CVE-2021-25220 Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis Solution – Primary Fix Solution – Alternative Approaches Verification & Acceptance […]

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How to Configure Logwatch Log Analyzer on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Logwatch Log Analyzer on Debian 9

Introduction Debian 9 Stretch is built around the ethos of stability and free software. Setting up configure logwatch log analyzer on debian 9 on Stretch leverages the same proven Debian packaging system that powers millions of servers worldwide, while benefiting from the latest upstream releases included in the Stretch freeze. Follow each step carefully and […]

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Arch Linux — code — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on Arch Linux

Arch Linux — code — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 25 May 2026 Affected versions: Arch Linux (rolling release) 📖 ~4 min read  •  Source: Arch ASA ASA-202107-34 Related CVEs: CVE-2021-31214 CVE-2021-31211 Upstream summary: Type: arbitrary code execution. Status: Fixed. Affected: 1.56.2-3. Fixed in: 1.58.0-1. Group: AVG-1963. Table of contents Symptom & Impact Environment & Reproduction Root […]

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How To Gather Infrastructure Metrics with Topbeat and ELK on Ubuntu 14.04 — step-by-step Linux tutorial on Progressive Robot

How To Gather Infrastructure Metrics with Topbeat and ELK on Ubuntu 14.04

In this tutorial, we will show you how to use Topbeat, on an Ubuntu 14.04 server, with an ELK stack to gather and visualize infrastructure metrics. Topbeat, which is one of the several “Beats” data shippers that helps send various types of server data to an Elasticsearch instance, allows you to gather information about the CPU, memory, and process activity on your servers.

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