Articles Tagged: #sysadmin
Showing 12 verified technical articles tagged with #sysadmin.
AWS EC2 EBS Disk Expansion and Live Filesystem Resizing Without Downtime
How to modify Elastic Block Store (EBS) volume sizes in the AWS Console or CLI and safely resize XFS and ext4 filesystems on live instances.
How to Troubleshoot AWS EC2 Disk Space and EBS Volume Issues
A production guide to resolve disk full errors on AWS EC2 instances, expand EBS volumes online without downtime, extend partitions using growpart, and resize ext4/XFS filesystems.
Diagnosing Docker Container CrashLoopBackOff and Restart Cycles
Inspect exit codes, entrypoint scripts, log tails, OOM kills, and Docker daemon resource exhaustion to stabilize failing container clusters.
How to Fix a Docker Container That Keeps Restarting
A production diagnostic guide to fix Docker containers stuck in restart loops. Diagnose exit codes (1, 137 OOM, 139), inspect crash logs, and debug ENTRYPOINT issues.
How to Fix “No Space Left on Device” on a Linux Server
A comprehensive troubleshooting guide to resolve Linux disk full errors, find large directories, identify inode exhaustion, and release deleted files held open by active processes.
How to Troubleshoot High Load and CPU Spikes on a Production Linux Server
A methodical diagnosis guide to isolate runaway PHP-FPM workers, MySQL lockups, unindexed queries, and stuck cron jobs using top, htop, and iotop.
How to Troubleshoot High CPU Usage on a Linux Server
A step-by-step diagnostic guide to isolate runaway processes, high system load, and thread contention on production Linux servers using top, pidstat, and mpstat.
Why Backup Verification and Restore Drills Are Essential for Production Stability
A deep dive into why automated backups alone are insufficient without regular restore verification and isolated staging drills.
MCP vs A2A: What DevOps Engineers Need to Know About AI Agent Infrastructure
A technical breakdown of Model Context Protocol (MCP) and Agent-to-Agent (A2A) architectures for DevOps and cloud engineers, comparing tool integration with multi-agent orchestration.
AI-Powered Linux Server Security: How AI Can Help Detect and Respond to Threats
A practical guide to AI-assisted Linux security: correlating auth logs, auditd events, and eBPF telemetry to detect intrusions and execute safe threat response.
Agentic AI for DevOps: Can AI Agents Really Manage Production Linux Servers?
A technical evaluation of agentic AI in Linux operations: tool calling protocols, multi-step incident diagnostics, production guardrails, and why human engineering judgment remains essential.
Linux Server Security in 2026: 15 Practical Steps to Protect a Production Server
A production-tested checklist of 15 essential Linux hardening steps: SSH key authentication, nftables firewalls, Fail2ban, kernel sysctl tuning, auditd, and tested backups.
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