Logging Monitoring

Common Problems 119021

Ubuntu 14.04 LTS MySQL service fails to start after unclean shutdown

🟠 High   ⏱ 5–30 min  Last verified: 30 December 2019 Affected versions: 14.04 📖 ~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 […]

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How to Configure Bonding Network Interfaces on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Bonding Network Interfaces on Debian 9

Introduction Deploying configure bonding network interfaces on debian 9 on a Debian 9 Stretch machine is straightforward thanks to Debian’s policy-compliant packaging. Unlike rpm-based distributions, Debian stores configuration helpers in /etc/default/, uses update-rc.d for older init scripts, and provides dpkg-reconfigure for interactive package configuration. This tutorial stays on the systemd path throughout. Prerequisites Ensure Debian […]

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FreeBSD 12 — php70-imap — security advisory — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — php70-imap — security advisory — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: php-imap — imap_open allows to run arbitrary shell commands via mailbox parameter Upstream summary: The PHP team reports: imap_open allows to run arbitrary shell commands via mailbox parameter. Table of […]

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How to Configure Ceph Storage Cluster on Debian 9 — step-by-step Debian 9 tutorial on Progressive Robot

How to Configure Ceph Storage Cluster on Debian 9

Introduction How to Configure Ceph Storage Cluster on Debian 9 is a fundamental operation for any administrator maintaining a Debian 9 Stretch server. Debian 9 Stretch ships with the Linux 6.12 kernel, updated toolchains, and a fully refreshed package archive — meaning version numbers, configuration file paths, and some dependency chains differ from Debian 9. […]

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FreeBSD 12 — neovim — vulnerability — patch and remediation guide — diagnosis and fix on FreeBSD 12

FreeBSD 12 — neovim — vulnerability — patch and remediation guide

🟢 Low   ⏱ 5–15 min  Last verified: 30 December 2019 Affected versions: FreeBSD 12 📖 ~4 min read  •  Source: FreeBSD VuXML VuXML topic: Vim/NeoVim — Security vulnerability Related CVEs: CVE-2016-1248 Upstream summary: Security releases for Vim/NeoVim: Sandbox escape allows for arbitrary code execution. Table of contents Symptom & Impact Environment & Reproduction Root […]

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SLES 15 — clamsap — multiple vulnerabilities (2 CVEs) — patch and remediation guide — diagnosis and fix on SLES 15

SLES 15 — clamsap — multiple vulnerabilities (2 CVEs) — patch and remediation guide

🟡 Medium   ⏱ 10–30 min  Last verified: 30 December 2019 Affected versions: SLES 15 📖 ~4 min read  •  Source: SUSE advisory SUSE-SU-2016:0805-1 (see also SUSE bugzilla) Related CVEs: CVE-2015-2278 CVE-2015-2282 Upstream summary: The LZH decompression implementation (CsObjectInt::BuildHufTree function in vpa108csulzh.cpp) in SAP MaxDB 7.5 and 7.6, Netweaver Application Server ABAP, Netweaver Application Server […]

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Gentoo Linux — net-analyzer/sarg — vulnerability — patch and remediation guide — diagnosis and fix on Gentoo Linux

Gentoo Linux — net-analyzer/sarg — vulnerability — patch and remediation guide

🟠 High   ⏱ 15–60 min  Last verified: 25 May 2026 Affected versions: Gentoo Linux 📖 ~4 min read  •  Source: Gentoo GLSA GLSA-202007-32 Related CVEs: CVE-2019-18932 Upstream summary: A flaw in Sarg’s handling of temporary directories was discovered. Table of contents Symptom & Impact Environment & Reproduction Root Cause Analysis Quick Triage Step-by-Step Diagnosis […]

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How to Configure Storage Replica on Windows Server 2016 — step-by-step Windows Server 2016 tutorial on Progressive Robot

How to Configure Storage Replica on Windows Server 2016

How to Set Up Windows Server 2016 Storage Replica Storage Replica is a feature introduced in Windows Server 2016 that enables synchronous and asynchronous block-level replication of volumes between servers or clusters. It provides storage-agnostic, hardware-independent replication for disaster recovery, migration, and stretch cluster scenarios. Unlike previous replication technologies, Storage Replica operates at the block […]

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Common Problems 115443

RHEL 7 – Legacy service Command Reports Running but Port Is Closed

🟡 Medium   ⏱ 5–30 min  Last verified: 29 December 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 & Cross-Refs References & Further […]

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How to Monitor Hyper-V Performance on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Monitor Hyper-V Performance on Windows Server 2012 R2

How to Monitor Hyper-V Performance on Windows Server 2012 R2 Monitoring Hyper-V performance is essential for identifying resource bottlenecks, planning capacity expansions, and ensuring that virtual machines are receiving adequate CPU, memory, storage, and network resources. Windows Server 2012 R2 provides multiple tools for Hyper-V performance monitoring: Performance Monitor with Hyper-V-specific counters, Task Manager, Resource […]

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