Capacity Planning

Common Problems 115598

RHEL 7 Yum Update Fails Because /boot Is Full

🟡 Medium   ⏱ 5–30 min  Last verified: 19 June 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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Common Problems 121054

Debian 10: inode exhaustion on web content volume

🟠 High   ⏱ 5–30 min  Last verified: 16 June 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 112463

Windows Server 2019 — DHCP scope exhaustion caused by stale reservations and delayed lease reclamation — Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 14 June 2020 Affected versions: Windows Server 2019 📖 ~2 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 119000

Ubuntu 14.04 LTS rsyslog Queue Backlog Fills Root Filesystem

🟠 High   ⏱ 5–30 min  Last verified: 11 June 2020 Affected versions: 14.04 LTS 📖 ~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 119050

Ubuntu 14.04 LTS PHP-FPM Pool Exhaustion Causes 502 Errors

🟠 High   ⏱ 5–30 min  Last verified: 10 June 2020 Affected versions: 14.04 LTS 📖 ~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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How to Install InfluxDB and Telegraf on RHEL 8 — step-by-step RHEL 8 tutorial on Progressive Robot

How to Install InfluxDB and Telegraf on RHEL 8

InfluxDB 2.x is a purpose-built time-series database that stores metrics with nanosecond precision and exposes a powerful query language called Flux for aggregating and transforming that data. Telegraf is the official plugin-driven metrics collection agent from InfluxData — it ships over 200 input plugins covering everything from CPU and memory to Docker containers and SNMP […]

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How to Install and Configure MinIO Object Storage on RHEL 7 — step-by-step RHEL 7 tutorial on Progressive Robot

How to Install and Configure MinIO Object Storage on RHEL 7

How to Install and Configure MinIO Object Storage on RHEL 7 MinIO is a high-performance, S3-compatible object storage server written in Go. It can run as a single-node server or in distributed mode across multiple nodes, making it suitable for everything from development environments to production-grade data lakes. Because MinIO ships as a single static […]

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Common Problems 118095

Ubuntu 18.04 LTS – swap usage stays high after memory pressure event

🟡 Medium   ⏱ 5–30 min  Last verified: 1 June 2020 Affected versions: Ubuntu 18.04 LTS Ubuntu 18.04 Ubuntu 18.04.6 📖 ~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 […]

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How to Install Node.js and npm on Windows Server 2012 R2 — step-by-step Windows Server 2012 R2 tutorial on Progressive Robot

How to Install Node.js and npm on Windows Server 2012 R2

How to Install Node.js and npm on Windows Server 2012 R2 Node.js is the JavaScript runtime built on Chrome’s V8 engine, and npm is its package manager providing access to hundreds of thousands of open-source packages. Installing Node.js on Windows Server 2012 R2 enables you to run server-side JavaScript applications, build tools (Webpack, Gulp, Grunt), […]

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Common Problems 112620

Windows Server 2019 Write Cache Policy Disabled Reducing Array Write Performance – Fix & Prevention

🟠 High   ⏱ 5–30 min  Last verified: 28 May 2020 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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