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How to Configure Windows Server 2019 with Nagios — step-by-step Windows Server 2019 tutorial on Progressive Robot

How to Configure Windows Server 2019 with Nagios

How to Configure Windows Server 2019 with Nagios Nagios is a widely-used open-source infrastructure monitoring platform that can monitor Windows Server 2019 hosts for availability, performance, and service health. Integration is achieved through the NSClient++ agent installed on Windows servers, which responds to Nagios check commands over NRPE (Nagios Remote Plugin Executor) or NSCP protocol. […]

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How To Embed a React Application in WordPress on Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

How To Embed a React Application in WordPress on Ubuntu 18.04

This tutorial will walk you through best practices for embedding a React application in a WordPress site. You will create a widget intended to be embedded on multiple pages and sometimes multiple times on a page. On the server side, it will be implemented as a WordPress shortcode. By the end of this tutorial, you will have created your own shortcode, inserted it into a page in WP Admin, and published that page.

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Common Problems 125093

Oracle Linux 8 – Common Problem 013 – Diagnosis and Fix

🟠 High   ⏱ 5–30 min  Last verified: 9 January 2022 Affected versions: Oracle Linux 8 📖 ~3 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 115003

RHEL 8 XFS filesystem remounts read-only after metadata error

🟡 Medium   ⏱ 5–30 min  Last verified: 9 January 2022 📖 ~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 References & Further […]

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How to Deploy a Symfony Application on CentOS Stream 9 — step-by-step CentOS Stream 9 tutorial on Progressive Robot

How to Deploy a Symfony Application on CentOS Stream 9

Introduction This tutorial demonstrates how to Deploy a Symfony Application on CentOS Stream 9 on CentOS Stream 9. It is written for administrators who want a repeatable, well-explained walkthrough that goes beyond a bare command list and explains each configuration choice. Every command is tested against a freshly registered CentOS Stream 9 system with the […]

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FreeBSD 13 — openx — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — openx — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 January 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: OpenX — SQL injection vulnerability Related CVEs: CVE-2013-7149 Upstream summary: Revive reports: An SQL-injection vulnerability was recently discovered and reported to the Revive Adserver team by Florian Sander. The vulnerability […]

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FreeBSD 12 — graylog — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — graylog — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 January 2022 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: graylog — remote code execution in log4j from user-controlled log input Related CVEs: CVE-2021-44228 CVE-2021-45046 Upstream summary: Apache Software Foundation reports: It was found that the fix to address CVE-2021-44228 […]

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Common Problems 112629

Windows Server 2019 — VSS snapshot creation fails during backup windows — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 9 January 2022 Affected versions: Windows Server 2019 📖 ~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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FreeBSD 13 — cliqz — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — cliqz — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 9 January 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Mozilla — Stored passwords in 'Saved Logins' can be copied without master password entry Related CVEs: CVE-2019-11733 Upstream summary: Mozilla Foundation reports: CVE-2019-11733: Stored passwords in 'Saved Logins' can be […]

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