Don’t let your process see what it’s not supposed to see
Container Basics On Linux (Namespaces/Cgroups) Don’t let your process see what it’s not supposed to see 🧩 The Challenge You ever have a process you just need to isolate, but...
Month: September 2026
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Stop Ansible from hanging on your CI runners when a background task leaks
DevOps Tooling On Linux (CI/CD Runners, Ansible) Stop Ansible from hanging on your CI runners when a background task leaks Technical Briefing | 9/20/2026 We have all seen that CI...
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Find out exactly which repo gave you that broken package version
Package Management (Apt/Dnf/Pacman Internals) Find out exactly which repo gave you that broken package version 🧩 The Challenge Dealing with a vendor repo that pushed a broken update and now...
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Stop letting your web server choke on too many half-open connections
Performance Tuning & Kernel Parameters (Sysctl) Stop letting your web server choke on too many half-open connections 🧩 The Challenge You’ve got a high-traffic app and suddenly it starts dropping...
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Don’t just audit2allow your SELinux problems away
Security Hardening (SELinux/AppArmor/Auditd) Don’t just audit2allow your SELinux problems away Technical Briefing | 9/20/2026 Most of us have been there: SELinux is on, it’s blocking your shiny new custom app...
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Force users off their home directories when they just wont log out
User & Group Management Force users off their home directories when they just wont log out 🧩 The Challenge Dealing with a user account that has an open handle on...
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Stop the madness of parsing shell command output by hand
Shell Scripting / Bash Tricks Stop the madness of parsing shell command output by hand 🧩 The Challenge You know that feeling when you’re writing a script, you run a...
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Don’t let your nftables sets blow up when your VPN client restarts
Networking & Firewalls (Nftables/Iptables/WireGuard) Don’t let your nftables sets blow up when your VPN client restarts Technical Briefing | 9/19/2026 WireGuard is great because it is quiet, but that silence...
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See exactly where your process lives in the namespace hierarchy
Container Basics On Linux (Namespaces/Cgroups) See exactly where your process lives in the namespace hierarchy 🧩 The Challenge Trying to figure out why a process is acting like it’s in...
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Stop blindly trusting your filesystem free space report
Disk & Filesystem Management (Du/Df/Lsblk/Fstrim) Stop blindly trusting your filesystem free space report 🧩 The Challenge Ever look at df and see 10 percent disk usage, only to have your...