Linux

Debian 10 — jetty9 — vulnerability — patch and remediation guide — diagnosis and fix on Debian 10

Debian 10 — jetty9 — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 7 September 2020 Affected versions: Debian 10 (buster) 📖 ~4 min read  •  Source: Debian Security Tracker Related CVEs: CVE-2019-10241 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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Ubuntu 20.04でLet’s Encryptを使用してApacheを保護する方法 — step-by-step Linux tutorial on Progressive Robot

Ubuntu 20.04でLet’s Encryptを使用してApacheを保護する方法

Let’s Encryptは、無料のTLS /SSL証明書の取得ならびにインストール、またWebサーバーでのHTTPS暗号化の有効を円滑にする認証局(CA)です。現在、証明書の取得とインストールのプロセス全体は、Apache、NginxともにCertbotで完全に自動化されています。このチュートリアルでは、Certbotを使用して、Ubuntu 20.04にインストールされたApacheに無料のSSL証明書を取得し、証明書が自動更新されるように設定します。

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How to Monitor Disk Usage with df, du, lsblk and ncdu on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Monitor Disk Usage with df, du, lsblk and ncdu on RHEL 7

How to Monitor Disk Usage with df, du, lsblk and ncdu on RHEL 7 Running out of disk space is one of the most disruptive events in a production Linux environment — it can crash databases, halt web servers, and fill system logs with errors. Proactive disk usage monitoring is therefore a non-negotiable part of […]

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Common Problems 121013

Debian 10: Network outage from ifupdown and NetworkManager conflict

🟠 High   ⏱ 5–30 min  Last verified: 6 September 2020 Affected versions: Debian 10 📖 ~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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Common Problems 118088

Ubuntu 18.04 Swap Thrashing Causes Severe Latency

🟡 Medium   ⏱ 5–30 min  Last verified: 6 September 2020 📖 ~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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Ubuntu 16.04 — ldns — multiple vulnerabilities (5 CVEs) — patch and remediation guide — diagnosis and fix on Ubuntu 16.04

Ubuntu 16.04 — ldns — multiple vulnerabilities (5 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 6 September 2020 Affected versions: Ubuntu 16.04 (xenial) 📖 ~4 min read  •  Source: Ubuntu Security Notice USN-5257-1 Related CVEs: CVE-2020-19860 CVE-2020-19861 CVE-2014-3209 CVE-2017-1000231 CVE-2017-1000232 Upstream summary: It was discovered that ldns incorrectly handled certain inputs. An attacker could possibly use this issue to expose sensitive information. […]

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How to Set Up Cron Jobs and Scheduled Tasks on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Set Up Cron Jobs and Scheduled Tasks on Debian 9

Introduction This guide explains how to Set Up Cron Jobs and Scheduled Tasks on Debian 9 on Debian 9 Stretch. Debian Stretch uses systemd for service management, nftables as the underlying packet filter (with ufw or iptables front-ends still available), and AppArmor for mandatory access control. Every command is designed for a minimal Debian 9 […]

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Использование расширения PDO PHP для выполнения транзакций MySQL на PHP в Ubuntu 18.04 — step-by-step Linux tutorial on Progressive Robot

Использование расширения PDO PHP для выполнения транзакций MySQL на PHP в Ubuntu 18.04

Автор выбрал организацию Open Sourcing Mental Illness для получения пожертвований в рамках программы Write for DOnations. Транзакция MySQL представляет собой группу логически связанных команд SQL,…

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