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

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

Written by: 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. Economics
Episodes
  • Linux Kernel Memory Reclaim Strategies

    Linux Kernel Memory Reclaim Strategies
    Oct 19 2026
    Most sysadmins think Linux memory management is simple: the kernel takes what it needs and gives it back. But that intuition fails when dealing with page cache pressure, slab allocations, and reclaim stalls. This episode dissects how the Linux kernel actually balances dirty pages, anonymous memory, and buffer heads under load. We look at the specific mechanics of kswapd, direct reclaim paths, and why servers stall during high-pressure memory compaction. For anyone managing production infrastructure, understanding these internal rhythms prevents the mysterious latency spikes that happen when RAM hits one hundred percent. #LinuxKernel #MemoryManagement #SysadminTips #ServerEngineering #PageCache #SlabAllocator #Kswapd #DirectReclaim #LatencyOptimization #ProductionInfra #BashScripting #TechOps #FexingoBusiness #BusinessPodcast #SystemPerformance #CloudInfrastructure #DevOpsDaily #LucasAndLuna Keep every episode free: buymeacoffee.com/fexingo
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    9 mins
  • Linux Server Admin with Fexingo: Sysadmin Bash and Server Engineering

    Linux Server Admin with Fexingo: Sysadmin Bash and Server Engineering
    Oct 18 2026
    In this episode, Lucas and Luna explore the often-overlooked world of Linux server administration, focusing on the practical realities of managing bash scripts and ensuring robust server engineering. They discuss common pitfalls in automation, the importance of idempotent design, and how to maintain system stability without constant intervention. With a specific case study on a recent deployment failure caused by race conditions in cron jobs, they provide actionable advice for sysadmins looking to improve their workflow. This conversation is tailored for those who manage infrastructure daily and want to move beyond basic troubleshooting to proactive system management. #LinuxServerAdmin #SysadminLife #BashScripting #ServerEngineering #DevOpsCulture #SystemAdministration #AutomationBestPractices #CronJobsExplained #IdempotencyMatters #TechPodcastDaily #FexingoBusiness #BusinessPodcast #InfrastructureManagement #LinuxTips #SysAdminTools #CloudOperations #ITCareerAdvice #TechnologyTrends Keep every episode free: buymeacoffee.com/fexingo
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    12 mins
  • Why Linux Servers Crash After Months of Uptime

    Why Linux Servers Crash After Months of Uptime
    Oct 17 2026
    Most sysadmins assume that if a server has been running for six months without a reboot, it is stable. But in reality, silent resource leaks and kernel state accumulation can degrade performance until the system finally hangs or OOM kills critical processes. In this episode, we examine why long-running Linux servers fail not from acute attacks, but from chronic accumulation of untracked allocations, zombie file descriptors, and TCP socket exhaustion. We look at specific cases where uptime masked underlying decay, and how monitoring tools like systemd-journald limits and cgroup memory tracking reveal the hidden costs of perpetual operation. #LinuxServerStability #SysadminLife #ServerUptime #ResourceLeaks #KernelState #SystemDJournal #TCPExhaustion #OOMKiller #ZombieProcesses #FileDescriptors #CGroupTracking #ServerMaintenance #TechOps #DevOpsDaily #LinuxAdmin #FexingoBusiness #BusinessPodcast #TechnologyShow Keep every episode free: buymeacoffee.com/fexingo
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    11 mins
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