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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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50 Servlet Interview Questions and Answers — step-by-step Programming tutorial on Progressive Robot

50 Servlet Interview Questions and Answers

URL: https://www.progressiverobot.com/servlet-interview-questions-and-answers/ Servlets is a very important topic of Java EE and all of the web applications frameworks such as Spring and Struts is built on top of it. This makes servlet interview questions a hot topic in interviews. Here I am providing a list of 50 servlet interview questions with answers to help you […]

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How to Configure Prometheus Node Exporter on FreeBSD 13 — step-by-step FreeBSD 13 tutorial on Progressive Robot

How to Configure Prometheus Node Exporter on FreeBSD 13

Introduction This guide explains how to Configure Prometheus Node Exporter on FreeBSD 13 on FreeBSD 13. FreeBSD uses the pkg(8) binary package manager, rc.conf(5) for service startup configuration, and pf(4) as its primary packet filter. There is no SELinux or AppArmor — instead, FreeBSD provides the MAC (Mandatory Access Control) framework and Capsicum for fine-grained […]

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Python String Functions — step-by-step Python tutorial on Progressive Robot

Python String Functions

URL: https://www.progressiverobot.com/python-string-functions/ Python provides a lot of built-in functions to manipulate strings. Python String is immutable, so all these functions return a new string and the original string remains unchanged. Python String Functions There are many functions to operate on String. However, it's not feasible to remember all of them. So here we are dividing […]

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FreeBSD 13 — php55-openssl — multiple vulnerabilities (3 CVEs) — patch and remediation guide — diagnosis and fix on FreeBSD 13

FreeBSD 13 — php55-openssl — multiple vulnerabilities (3 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 9 January 2022 Affected versions: FreeBSD 13 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php5 — multiple vulnerabilities Related CVEs: CVE-2015-6831 CVE-2015-6832 CVE-2015-6833 Upstream summary: The PHP project reports: Core: Fixed bug #69793 (Remotely triggerable stack exhaustion via recursive method calls). Fixed bug #70121 […]

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