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Latest from Ops Community

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Ops Community

May 31, 2026 · Operations

Master Batch Text Processing with awk and sed: A Practical Guide for Sysadmins

This article walks through the fundamentals and advanced techniques of using awk and sed on Linux for batch text manipulation, covering field handling, custom delimiters, BEGIN/END blocks, conditional filtering, arrays, built‑in functions, real‑world Nginx log analysis, script creation, performance tips, common pitfalls, debugging tricks, and how to combine both tools for powerful pipelines.

Linuxawklog analysis

0 likes · 45 min read

Master Batch Text Processing with awk and sed: A Practical Guide for Sysadmins

Ops Community

May 30, 2026 · Operations

Master Linux Disk Partitioning and Mounting: A Practical Step‑by‑Step Guide

This guide walks Linux operators through the fundamentals of disk partitioning, explains MBR and GPT partition tables, demonstrates the use of fdisk, parted and gdisk, shows how to create and format filesystems, configure mounting options and fstab, manage LVM volumes, and provides real‑world case studies with commands, examples, and best‑practice recommendations.

LVMLinuxdisk partitioning

0 likes · 35 min read

Master Linux Disk Partitioning and Mounting: A Practical Step‑by‑Step Guide

Ops Community

May 29, 2026 · Cloud Native

10 Common Pitfalls When Migrating Docker‑Compose to Kubernetes

This guide details the ten most frequent issues encountered when converting Docker‑Compose configurations to Kubernetes, explains why direct mappings often fail, and provides concrete examples, correct configurations, validation steps, and best‑practice recommendations to help teams avoid weeks of troubleshooting.

Best PracticesContainersDevOps

0 likes · 47 min read

10 Common Pitfalls When Migrating Docker‑Compose to Kubernetes

Ops Community

May 27, 2026 · Operations

Practical Nginx Log Analysis: Uncovering the Culprit Behind Abnormal Access

This guide walks you through when to inspect Nginx logs, how to configure log formats, essential variables, common shell commands, and five real‑world troubleshooting scenarios—CC attacks, SQL injection, 500 errors, slow responses, and malicious crawlers—plus log rotation, tooling, and security hardening.

0 likes · 37 min read

Practical Nginx Log Analysis: Uncovering the Culprit Behind Abnormal Access

Ops Community

May 26, 2026 · Databases

How to Safely Clean Up MySQL Binlog When Disk Space Is Critical

This guide walks through why MySQL binlog can fill disks, explains its structure and formats, and provides a step‑by‑step, risk‑aware process—including preparation, safe PURGE commands, automatic expiration settings, verification, and monitoring—to clean binlog without breaking replication or losing data.

Monitoringbackupbinlog

0 likes · 34 min read

How to Safely Clean Up MySQL Binlog When Disk Space Is Critical

Ops Community

May 25, 2026 · Operations

How to Pinpoint Disk I/O Bottlenecks on Linux with iostat and blktrace

This guide walks you through a step‑by‑step, non‑disruptive workflow for diagnosing high disk I/O on Linux servers using built‑in tools such as vmstat, iostat, iotop, pidstat, lsof and the low‑level tracer blktrace, then shows how to interpret the data, identify common root causes, apply targeted fixes, and verify improvements with fio benchmarks and continuous monitoring.

Linuxblktracedisk I/O

0 likes · 26 min read

How to Pinpoint Disk I/O Bottlenecks on Linux with iostat and blktrace

Ops Community

May 23, 2026 · Cloud Native

Terraform in Practice: From IaC Basics to Production

This article walks readers through using Terraform for Infrastructure as Code, covering installation, core concepts, workflow, remote state management, modular design, variable handling, sensitive data protection, production best practices, troubleshooting, and advanced topics such as Terragrunt, CDK, policy-as-code, testing, multi‑cloud deployment, and import strategies.

awsci/cdinfrastructure-as-code

0 likes · 28 min read

Terraform in Practice: From IaC Basics to Production

Ops Community

May 22, 2026 · Databases

How a Single Slow Query Triggered a Database Avalanche – Full SQL Optimization Walkthrough

A real‑world MySQL incident where a batch UPDATE with an IN‑subquery caused a full‑table scan, connection pool exhaustion, and a system‑wide outage, and the step‑by‑step investigation, emergency mitigation, and comprehensive optimization that reduced query time from 45 seconds to 0.3 seconds.

MonitoringPerformance tuningSQL optimization

0 likes · 20 min read

How a Single Slow Query Triggered a Database Avalanche – Full SQL Optimization Walkthrough

Ops Community

May 21, 2026 · Information Security

How to Harden Docker in Production: From Image Scanning to Runtime Protection

This guide walks DevOps engineers through a complete Docker hardening workflow—explaining the security model, recommending safe base images, removing secrets, applying multi‑stage builds, enforcing image signing, configuring runtime privileges, resource limits, network isolation, logging, and continuous audit with tools like Trivy, Cosign, Falco and CIS benchmarks.

CIS BenchmarkDockerHardening

0 likes · 29 min read

How to Harden Docker in Production: From Image Scanning to Runtime Protection

Ops Community

May 20, 2026 · Backend Development

Redis Cache Avalanche, Penetration, and Breakdown: The Three Must‑Know Issues for Interviews

This article explains the three classic Redis cache problems—avalanche, penetration, and breakdown—detailing their definitions, typical symptoms, step‑by‑step troubleshooting procedures, root‑cause analysis, and practical mitigation strategies such as random expiration, empty‑value caching, Bloom filters, distributed locks, and multi‑level cache architectures.

RedisTroubleshootingbloom-filter

0 likes · 35 min read

Redis Cache Avalanche, Penetration, and Breakdown: The Three Must‑Know Issues for Interviews