Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering Titelbild

Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering

Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering

Von: Fexingo
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Lucas and Luna sit down at a pair of thin laptops, terminal windows flickering with abstract patterns, to talk Linux server administration as it's actually practiced—bash scripting, systemd quirks, Nginx tuning, SSH hardening, and the daily grind of keeping production services online. Each episode picks a single sysadmin problem: how to diagnose a slow database query without panic, why that cron job keeps failing at 3 AM, or the right way to automate backups with rsync and rclone. Lucas brings the journalistic rigor—he'll cite real-world incidents like the 2021 AWS Kinesis outage that broke monitoring for half the internet, or the time a misplaced chmod command took down a major e-commerce site for an hour. Luna pushes back with hands-on experience: she's the one who asks whether you really need Docker for a three-service stack, or why your fail2ban config is banning your own IP. Together they cut through vendor hype—no Kubernetes if you have five servers, no Ansible if a shell loop will do—and focus on the tools and habits that keep systems boringly stable. The listener is someone who manages servers—maybe a solo IT generalist at a mid-size company, a DevOps engineer tired of conference talk, or a hobbyist running a home lab who wants professional-grade discipline. No whiteboarding abstract architectures; just concrete decisions, error messages, and the trade-offs between uptime and complexity. Can you afford to ignore SELinux? When is it smarter to reboot than to debug a memory leak? And how do you explain a 99.9% uptime SLA to a manager who thinks 'the cloud' fixes everything? #LinuxServerAdmin #Sysadmin #Bash #ServerEngineering #SSH #Nginx #Systemd #DevOps #Infrastructure #Automation #Backup #Security #Technology #FexingoBusiness #BusinessPodcast #DailyPodcast #ServerRoom #Terminal Keep every episode free: buymeacoffee.com/fexingo© 2026 Fexingo. All rights reserved. Ökonomie
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  • Linux Server Memory Swappiness Tuning Guide

    Linux Server Memory Swappiness Tuning Guide
    Sep 24 2026
    Most Linux servers default to a swappiness value of sixty, but for database and application workloads, that number often causes unnecessary disk thrashing. In this episode, we dig into the specific mechanics of how the Linux kernel decides what to swap out under memory pressure. We look at why setting swappiness to ten or even zero can stabilize response times for critical services like PostgreSQL and Redis. Lucas walks through the trade-offs between keeping data in RAM versus using swap space as a safety net, while Luna explores the real-world impact on latency spikes during peak traffic hours. If you are running high-concurrency servers in September twenty twenty-six, understanding this single kernel parameter might be the difference between a smooth afternoon and a degraded user experience. #LinuxServer #SystemAdministration #MemoryManagement #Swappiness #KernelTuning #PerformanceOptimization #DatabaseInfrastructure #PostgreSQL #Redis #RamVsSwap #ServerEngineering #TechOps #LatencyReduction #FexingoBusiness #BusinessPodcast #TechnologyShow #SysadminTips #InfrastructureCosts Keep every episode free: buymeacoffee.com/fexingo
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    12 Min.
  • How Linux Servers Handle Memory Leaks Without Rebooting

    How Linux Servers Handle Memory Leaks Without Rebooting
    Sep 23 2026
    Memory leaks are the silent killer of long-running Linux servers, often causing gradual performance degradation until a reboot is forced. In this episode, we explore how modern Linux administrators diagnose and mitigate memory pressure using tools like Valgrind, Valkey, and cgroups to isolate runaway processes without disrupting live services. We look at a specific case study where a custom Python application caused subtle heap fragmentation, leading to OOM kills during peak traffic hours. Lucas and Luna break down the difference between virtual memory leaks and physical page cache exhaustion, offering concrete strategies for setting up automated alerts based on RSS versus VSS metrics. You will learn how to configure systemd resource controls to limit individual service memory usage, preventing one buggy microservice from bringing down the entire host. This episode provides actionable steps for sysadmins managing high-availability infrastructure in September 2026, focusing on stability over brute-force restarts. #FexingoBusiness #BusinessPodcast #LinuxServerAdmin #SysadminLife #SystemEngineering #MemoryManagement #LinuxAdministration #DevOpsTools #PerformanceTuning #ServerStability #OOMKills #Cgroups #Valgrind #PythonOptimization #InfrastructureOps #TechCareers #SoftwareEngineering #CloudComputing Keep every episode free: buymeacoffee.com/fexingo
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    11 Min.
  • Why Linux Servers Stall Under Load

    Why Linux Servers Stall Under Load
    Sep 22 2026
    We examine the hidden cost of context switching in high-concurrency Linux servers. Using a real-world case from a major cloud provider, we break down how thousands of tiny threads fighting for CPU time create latency spikes that bypass traditional monitoring. Lucas and Luna explore cgroup limits, CPU affinity, and why your server feels fast until it doesn’t. #LinuxServer #Sysadmin #BashScripting #ServerEngineering #ContextSwitching #CPUAffinity #Cgroups #CloudInfrastructure #LatencySpike #HighConcurrency #SystemPerformance #FexingoBusiness #BusinessPodcast #TechTalk #DevOpsLife #SysAdminTips #LinuxKernel #PerformanceTuning Keep every episode free: buymeacoffee.com/fexingo
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    9 Min.
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