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FlatlinerAtheist | CLI-NERDS

DevOps engineer writing Linux, self-hosting & Kubernetes guides that are tested on real hardware before published. Free dev tools at clinerds.com — no sign-up, no paywall.

Joined Joined on  Personal website https://clinerds.com
SQLite in Production: A Practical Setup with Litestream Backups
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SQLite in Production: A Practical Setup with Litestream Backups

#database #sqlite #litestream #backups
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3 min read

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pgvector for Beginners: Add Semantic Search to PostgreSQL
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pgvector for Beginners: Add Semantic Search to PostgreSQL

#database #postgres #pgvector #vectorsearch
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3 min read
CrowdSec vs Fail2ban: Practical Brute-Force Protection for Your Server
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CrowdSec vs Fail2ban: Practical Brute-Force Protection for Your Server

#security #crowdsec #fail2ban #ssh
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3 min read
Passkeys Explained: A Practical Move Beyond Passwords
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Passkeys Explained: A Practical Move Beyond Passwords

#security #passkeys #webauthn #authentication
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3 min read
Caddy vs Nginx: Choosing a Reverse Proxy You Can Actually Maintain
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Caddy vs Nginx: Choosing a Reverse Proxy You Can Actually Maintain

#networking #caddy #nginx #reverseproxy
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3 min read
DNS over HTTPS Explained: What It Protects and What It Doesn't
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DNS over HTTPS Explained: What It Protects and What It Doesn't

#networking #dns #doh #privacy
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3 min read
Build Your Own Media Server with Jellyfin and Docker
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Build Your Own Media Server with Jellyfin and Docker

#selfhosting #jellyfin #docker #mediaserver
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3 min read
Tailscale for Homelabs: Access Your Servers Without Port Forwarding
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Tailscale for Homelabs: Access Your Servers Without Port Forwarding

#selfhosting #tailscale #wireguard #homelab
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3 min read
OpenTelemetry for Beginners: Traces, Metrics, and Your First Setup
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OpenTelemetry for Beginners: Traces, Metrics, and Your First Setup

#devops #opentelemetry #observability #tracing
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3 min read
GitOps with ArgoCD: A Practical Beginner's Guide for Kubernetes
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GitOps with ArgoCD: A Practical Beginner's Guide for Kubernetes

#devops #gitops #argocd #kubernetes
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3 min read
Wayland vs X11 in 2026: What's Better, What Breaks, Who Should Wait
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Wayland vs X11 in 2026: What's Better, What Breaks, Who Should Wait

#linux #wayland #x11 #desktop
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3 min read
Immutable Linux Distros Explained: Silverblue, NixOS, and Why They Matter
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Immutable Linux Distros Explained: Silverblue, NixOS, and Why They Matter

#linux #immutable #nixos #fedora
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3 min read
5 Tools to Automate Linux Sysadmin Tasks (Ansible, Puppet, Cron, More)
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5 Tools to Automate Linux Sysadmin Tasks (Ansible, Puppet, Cron, More)

#devops #automation #ansible #cron
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3 min read
5 Linux Caching Tools Compared: Redis, Memcached, Varnish, Nginx, Squid
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5 Linux Caching Tools Compared: Redis, Memcached, Varnish, Nginx, Squid

#linux #caching #redis #varnish
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3 min read
The Best RedHat-based Linux Distros
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The Best RedHat-based Linux Distros

#linux #distros #redhat
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4 min read
The Best Linux Distributions for Beginners in 2021
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The Best Linux Distributions for Beginners in 2021

#linux #distros #beginners
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7 min read
How to Use the Linux screen Command: Sessions That Survive SSH Drops
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How to Use the Linux screen Command: Sessions That Survive SSH Drops

#linux #screen #terminal #ssh
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2 min read
How to Recover Deleted Files in Linux (PhotoRec, TestDisk, extundelete)
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How to Recover Deleted Files in Linux (PhotoRec, TestDisk, extundelete)

#linux #datarecovery #photorec #testdisk
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3 min read
How to Install WordPress on Ubuntu with Nginx, MariaDB, and PHP
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How to Install WordPress on Ubuntu with Nginx, MariaDB, and PHP

#linux #wordpress #nginx #mariadb
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3 min read
How to Install Ubuntu Server on Raspberry Pi 4 (Headless Setup)
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How to Install Ubuntu Server on Raspberry Pi 4 (Headless Setup)

#linux #raspberrypi #ubuntu #selfhosting
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3 min read
How to Install Debian 11 (Bullseye): USB, Partitioning, and First Boot
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How to Install Debian 11 (Bullseye): USB, Partitioning, and First Boot

#linux #debian #installation #server
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3 min read
How to Install and Set Up Ansible on Ubuntu (First Playbook)
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How to Install and Set Up Ansible on Ubuntu (First Playbook)

#devops #ansible #automation #ubuntu
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2 min read
How to Install and Configure Fail2Ban on CentOS 8 (Stop Brute Force)
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How to Install and Configure Fail2Ban on CentOS 8 (Stop Brute Force)

#security #fail2ban #centos #ssh
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2 min read
Fix “Could not get lock /var/lib/dpkg/lock” in Ubuntu (Safely)
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Fix “Could not get lock /var/lib/dpkg/lock” in Ubuntu (Safely)

#linux #ubuntu #apt #dpkg
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2 min read
How to Completely Wipe a Hard Drive (HDD and SSD, the Right Way)
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How to Completely Wipe a Hard Drive (HDD and SSD, the Right Way)

#security #linux #datawiping #privacy
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3 min read
How to Set a Static IP Address on Ubuntu 20.04 with Netplan
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How to Set a Static IP Address on Ubuntu 20.04 with Netplan

#networking #ubuntu #staticip #netplan
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2 min read
The find Command in Linux: Practical Examples and Security Auditing
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The find Command in Linux: Practical Examples and Security Auditing

#linux #find #commandline #security
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3 min read
How to Create a Bootable Linux USB with the dd Command (Safely)
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How to Create a Bootable Linux USB with the dd Command (Safely)

#linux #dd #usb #liveusb
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2 min read
The Linux Filesystem Explained for Beginners (What Lives Where)
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The Linux Filesystem Explained for Beginners (What Lives Where)

#linux #filesystem #beginners #fhs
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3 min read
5 Linux Backup Utilities That Actually Save Your Data
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5 Linux Backup Utilities That Actually Save Your Data

#linux #backup #rsync #borg
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2 min read
Switching From Windows to Unix a Newbie Guide to Linux
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Switching From Windows to Unix a Newbie Guide to Linux

#linux #beginners
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13 min read
Subnetting and CIDR Notation: A Practical Guide
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Subnetting and CIDR Notation: A Practical Guide

#networking #subnetting
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8 min read
Build a Reliable Self-Hosted Stack with Docker Compose
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Build a Reliable Self-Hosted Stack with Docker Compose

#selfhosting #docker #compose #backup
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8 min read
Real world examples of using firewalld on CentOS/RHEL 7
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Real world examples of using firewalld on CentOS/RHEL 7

#networking #security #redhat
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8 min read
Python Programming Interview Questions for Freshers 2021
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Python Programming Interview Questions for Freshers 2021

#python #interview #career
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9 min read
Opening and Closing Ports in CentOS 6 and 7 using IPtables
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Opening and Closing Ports in CentOS 6 and 7 using IPtables

#networking #security #redhat
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5 min read
Linux SysAdmin Interview Questions 2021 Part 2
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Linux SysAdmin Interview Questions 2021 Part 2

#linux #interview #career
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4 min read
Linux Head Command with Examples
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Linux Head Command with Examples

#linux #commands
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3 min read
Linux File Permissions and chmod, Explained
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Linux File Permissions and chmod, Explained

#linux #permissions #security
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8 min read
Kubernetes Cookbook Part 8: Persistent Storage That Survives Restarts
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Kubernetes Cookbook Part 8: Persistent Storage That Survives Restarts

#kubernetes #storage #devops
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8 min read
Kubernetes Cookbook Part 9: StatefulSets for Apps That Remember
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Kubernetes Cookbook Part 9: StatefulSets for Apps That Remember

#kubernetes #database #devops
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7 min read
Kubernetes Cookbook Part 5: Services and Built-In Service Discovery
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Kubernetes Cookbook Part 5: Services and Built-In Service Discovery

#kubernetes #networking #devops
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7 min read
Kubernetes Cookbook Part 10: Lock Down the API with RBAC
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Kubernetes Cookbook Part 10: Lock Down the API with RBAC

#kubernetes #security #devops
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8 min read
Kubernetes Cookbook Part 2: Pods, Labels, and Health Checks
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Kubernetes Cookbook Part 2: Pods, Labels, and Health Checks

#kubernetes #containers #devops
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8 min read
Kubernetes Cookbook Part 3: Organize Clusters with Namespaces
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Kubernetes Cookbook Part 3: Organize Clusters with Namespaces

#kubernetes #devops #containers
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7 min read
Kubernetes Cookbook Part 1: A Local Cluster You Can Break
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Kubernetes Cookbook Part 1: A Local Cluster You Can Break

#kubernetes #containers #devops #docker
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7 min read
Kubernetes Cookbook Part 6: Ingress, One Front Door for Every App
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Kubernetes Cookbook Part 6: Ingress, One Front Door for Every App

#kubernetes #networking #devops
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8 min read
Kubernetes Cookbook Part 4: Deployments, Rollouts, and Rollbacks
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Kubernetes Cookbook Part 4: Deployments, Rollouts, and Rollbacks

#kubernetes #devops #containers
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6 min read
Kubernetes Cluster Architecture
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Kubernetes Cluster Architecture

#kubernetes #containers #devops
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8 min read
How to use Webmin A web based sys-admin tool
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How to use Webmin A web based sys-admin tool

#selfhosting #tools
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4 min read
How to SSH Using Private Key in Linux
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How to SSH Using Private Key in Linux

#ssh #security #linux
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4 min read
How to run multiple command at once in Linux
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How to run multiple command at once in Linux

#linux #commands
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4 min read
How to run Linux Commands in vi/vim editor
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How to run Linux Commands in vi/vim editor

#linux #commands
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4 min read
How to reset ROOT password in RHEL/CentOS
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How to reset ROOT password in RHEL/CentOS

#linux #redhat
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4 min read
How to Reset Ubuntu Passwd in WSL2
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How to Reset Ubuntu Passwd in WSL2

#linux #wsl
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3 min read
How to Multiboot From USB With Multiple ISO Files
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How to Multiboot From USB With Multiple ISO Files

#linux #storage
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4 min read
How To Mount And Unmount FileSystems In Linux
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How To Mount And Unmount FileSystems In Linux

#linux #filesystem
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4 min read
How to List USB Devices in Linux
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How to List USB Devices in Linux

#linux #commands
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3 min read
How to Install Zabbix on RHEL/CentOS and Debian/Ubuntu
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How to Install Zabbix on RHEL/CentOS and Debian/Ubuntu

#devops #monitoring
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6 min read
How to install Siege on Ubuntu ( The Most Advanced Benchmarking Tool)
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How to install Siege on Ubuntu ( The Most Advanced Benchmarking Tool)

#devops #benchmarking
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4 min read
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