Shows / Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
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…
Episodes
Linux Server Admin with Fexingo: Sysadmin, Bash, and Server EngineeringHow to Secure Linux SSH with Fail2ban and Key-Only Auth
In this episode, Lucas and Luna dive into the most common attack vector on Linux servers: SSH brute force. They explain how Fail2ban works under the hood—using…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Set Up Linux Server Disk Encryption with LUKS
In this episode of Linux Server Admin with Fexingo, Lucas and Luna walk through the practical steps for encrypting a Linux server's disks using LUKS (Linux…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux cgroups v2 for Server Resource Control
Episode 47 of Linux Server Admin with Fexingo dives into cgroups v2, the modern control group implementation that replaces the fragmented v1 system. Lucas and…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Tame Linux Server NFS Performance with Tuning
In this episode of Linux Server Admin, Lucas and Luna tackle the often overlooked tuning of NFS (Network File System) on Linux servers. Using a real-world case…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux Stratis for Storage Management
Episode 45 of Linux Server Admin with Fexingo dives into Stratis, a Linux storage management tool that combines ZFS-like features with native kernel…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux iptables for Advanced Network Firewall Rules
In this episode of Linux Server Admin with Fexingo, Lucas and Luna dive into the practical art of iptables on Linux. They start with a real-world scenario: a…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Tame Linux Server Logs with Logrotate
In this episode, Lucas and Luna dive into logrotate, the unsung hero of Linux server administration. They explore how a single misconfigured logrotate rule can…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Diagnose and Fix Linux Server Packet Loss
Episode 42 of Linux Server Admin with Fexingo dives into diagnosing and fixing packet loss on Linux servers. Lucas and Luna explore practical tools like ping…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Diagnose Linux Server Memory Leaks
Memory leaks on Linux servers can silently degrade performance until a process is killed or the system crashes. In this episode, Lucas and Luna walk through a…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux Systemd Timers for Scheduled Tasks
In this episode of Linux Server Admin, Lucas and Luna dive into systemd timers as a modern replacement for cron. They walk through the anatomy of a timer unit…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux Namespaces for Network Isolation
Episode 39 of Linux Server Admin dives into Linux network namespaces for isolating server processes without full container runtimes. Lucas and Luna break down…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux Auditd for Server Security Monitoring
Lucas and Luna dive into Linux auditd, the powerful auditing subsystem that tracks security-relevant events on your servers. They walk through a real-world…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux Control Groups for Resource Limits
Episode 37 of Linux Server Admin with Fexingo dives into control groups (cgroups) — the kernel feature that lets you limit CPU, memory, and I/O per process…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Benchmark Linux Server Disk I/O with FIO
Episode 36 of Linux Server Admin with Fexingo dives into disk I/O benchmarking with FIO. Lucas and Luna walk through a real-world scenario: a database server…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated Patch Automation Schedule
Episode 35 tackles the hidden risk of inconsistent patching on Linux servers. Lucas and Luna walk through a real-world case: a mid-sized e-commerce company…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Diagnose and Fix DNS Resolution Failures on Linux
Episode 34 of Linux Server Admin with Fexingo. Lucas and Luna walk through a real-world DNS failure that took down a staging environment for six hours. They…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Use Linux Namespaces for Container Security
Lucas and Luna dive into Linux namespaces, the kernel feature that underpins container isolation but is often misunderstood. They explain the seven namespace…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Recover a Linux Server from a Kernel Panic
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Rescue a Server With a Broken Root Filesystem
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Diagnose a Silent Disk Failure on Linux
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated Journald Configuration
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Harden Your Linux Server with AppArmor Profiles
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Tame Linux Server Timeouts With Systemd Drop-In Units
Lucas and Luna dive into a practical server engineering headache: timeouts. Lucas explains why the default systemd service timeout of 90 seconds can cause…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Harden Your Linux Server with SELinux Policies
In this episode, Lucas and Luna dive into SELinux on Linux servers — specifically, why and how to implement targeted policies without breaking production…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Audit SSH Keys Before They Become a Liability
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Sudoers File Needs Hardening Now
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
When Your Server Swaps Itself to Death
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Zero Downtime Deployments With Blue-Green Servers
Lucas walks Luna through the blue-green deployment pattern, a strategy that eliminates application downtime during updates by running two identical production…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated nullmailer Setup
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated WireGuard VPN Mesh
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
The Case for Filesystem Snapshots Before Package Updates
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Tame Linux Kernel OOM Killer with Systemd
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated Log Aggregation Pipeline
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated Time-Series Database
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs A Dedicated Monitoring Stack
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated Bastion Host
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…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs Immutable Root
Lucas and Luna explain the concept of immutable root filesystems for Linux servers—why making the root partition read-only can stop configuration drift…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Linux Server Needs a Dedicated Ansible Control Machine
Episode 12 of Linux Server Admin with Fexingo digs into a common but overlooked failure point in server management: running Ansible from a personal…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your NTP Setup Is Probably Drifting
Episode 11 of Linux Server Admin tackles a silent server killer: clock drift. Lucas and Luna explain why even a 50-millisecond offset can break database…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Debug a Kernel Panic in Production
When your production server suddenly drops into a kernel panic, the instinct is to reboot and hope it doesn't happen again. Lucas and Luna walk through a real…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How Container Orchestration Went Mainstream
In this episode of Linux Server Admin with Fexingo, hosts Lucas and Luna explore the real-world impact of container orchestration on Linux server engineering…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why You Should Monitor Server Disk Latency Now
Episode 8 of Linux Server Admin with Fexingo. Lucas and Luna drill into disk I/O latency — the silent performance killer that most sysadmins ignore until it's…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Automating Server Backups With Borgmatic
In this episode, Lucas and Luna dive into the practical world of server backups using Borgmatic, a wrapper for the Borg backup tool. They walk through a real…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
The Case for Structured Server Documentation
Lucas and Luna make the case that structured server documentation—not just comments in config files, but a living runbook—is the single most impactful…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How to Diagnose a Silent Memory Leak
Memory leaks are the ghosts of server administration: invisible until your OOM killer reaps a production process at 3 a.m. In this episode, Lucas and Luna walk…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your SSH Key Setup Is Probably Wrong
Episode 4 of Linux Server Admin looks at the single most common server authentication mistake: misconfigured SSH keys. Lucas and Luna walk through a real…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
Why Your Server Needs A Dedicated Log Partition
Episode 3 of Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering. Lucas and Luna dive into a classic sysadmin mistake: letting logs fill up…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How Systemd Tamed Linux Boot Chaos
Lucas and Luna dive into the story of systemd, the init system that replaced SysVinit and Upstart across nearly every major Linux distribution. They walk…
- Linux Server Admin with Fexingo: Sysadmin, Bash, and Server Engineering
How a Five-Dollar Typo Broke a Production Server
In this first episode of Linux Server Admin with Fexingo, Lucas and Luna dive into a real-world incident at a mid-sized e-commerce company where a single typo…