Hosted by Unknown Host · EN · 5 episodes
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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?
Unknown Host hosts Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering, a general show with 5 episodes published.
Lucas and Luna dive into Linux namespaces, the kernel feature that underpins container isolation but is often misunderstood. They explain the seven namespace types, show how a misconfigured namespace can leak host resour
When your Linux server kernel panics, the typical sysadmin response is a hard reset — but that can destroy forensic evidence and risk data corruption. In this episode, Lucas and Luna walk through a step-by-step recovery
Episode 31 of Linux Server Admin with Fexingo dives into the nightmare scenario: your Linux server's root filesystem is corrupted and won't boot. Lucas and Luna walk through a real rescue using the initramfs shell, manua
Episode 30 of Linux Server Admin with Fexingo tackles one of the most insidious server problems: a disk that's technically online but corrupting data silently. Lucas and Luna walk through a real case from a mid-size e-co
Episode 29 of Linux Server Admin with Fexingo dives into the hidden bottleneck in systemd's journald: the default rate-limiting settings that silently drop log entries during bursts, making debugging impossible when you
In this episode of Linux Server Admin, Lucas and Luna dive into AppArmor—the mandatory access control system that's simpler than SELinux but powerful enough to confine major services like Nginx, MySQL, and Apache. They w
Lucas and Luna dive into a practical server engineering headache: timeouts. Lucas explains why the default systemd service timeout of 90 seconds can cause cascading failures in production, especially for long-running dat
In this episode, Lucas and Luna dive into SELinux on Linux servers — specifically, why and how to implement targeted policies without breaking production workloads. Lucas walks through a real case from a financial servic
Episode 25 of Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering dives into SSH key hygiene. Lucas and Luna walk through a real-world scenario: a startup that accumulated 400 authorized SSH keys acro
Episode 24 of Linux Server Admin with Fexingo digs into a critical but often overlooked security gap: the sudoers file. Lucas and Luna walk through a real-world misconfiguration that gave an attacker passwordless root ac
Episode 23 of Linux Server Admin with Fexingo. Lucas and Luna dig into one of the most common yet misunderstood server failure modes: swap thrashing. They walk through a real scenario where a Postgres query triggered the
Lucas walks Luna through the blue-green deployment pattern, a strategy that eliminates application downtime during updates by running two identical production environments and switching traffic atomically. They break dow
Episode 21 of Linux Server Admin with Fexingo dives into the overlooked art of outbound email from headless servers. Lucas and Luna unpack why cron output, system alerts, and automated reports often vanish into the void,
In this episode, Lucas and Luna dive into why a dedicated WireGuard VPN mesh beats traditional VPN setups for server-to-server communication. They walk through a real-world example of a three-node cluster where tailscale
Before you run apt upgrade or yum update, there's a better safety net than hoping you can roll back. In this episode, Lucas and Luna dive into why filesystem snapshots — using LVM or ZFS — should be a standard pre-update
Episode 18 of Linux Server Admin with Fexingo tackles the Linux kernel's Out-Of-Memory (OOM) Killer—a necessary but brutal mechanism that can kill critical services when memory pressure spikes. Hosts Lucas and Luna explo
Episode 17 of Linux Server Admin with Fexingo dives into the case for a dedicated log aggregation pipeline. Lucas and Luna walk through a real-world scenario where a production outage was prolonged by 45 minutes because
In this episode of Linux Server Admin, Lucas and Luna explore why a dedicated time-series database (TSDB) like InfluxDB or VictoriaMetrics can transform how you handle server metrics, logs, and monitoring data. They walk
In this episode of Linux Server Admin with Fexingo, Lucas and Luna argue that every production Linux server should run its own dedicated monitoring stack, separate from the application infrastructure. They walk through a
Episode 14 of Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering. Lucas and Luna explain why routing all SSH traffic through a dedicated bastion host dramatically reduces your attack surface and simp
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Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering is hosted by Unknown Host. The show is categorised under General and has published 5 episodes.
Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering has published 5 episodes.
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