ReadMeFeed / Community knowledge
Real questions. Useful conversations. Find the people who know your stack.
Developer tools · #ubuntu
Guide to installing Snaps, managing interfaces, controlling update timing, and rolling back updates on Ubuntu LTS.
Diagnose and resolve failures in Ubuntu's unattended‑upgrades service, covering lock contention, network issues, stale APT lists, and configuration errors for LTS releases.
Learn how to implement a default-deny network policy on Ubuntu Server using UFW to block unauthorized access while maintaining SSH and web service connectivity.
Learn how to install ZFS, create a storage pool, enable compression, and take instantaneous snapshots on Ubuntu 22.04 LTS, with caveats about hardware and performance.
Ubuntu Kernel Livepatch can defer reboots for select kernel security fixes on supported stock kernels, but it is not a replacement for reboots or user space updates. Check release, HWE kernel series, and client status before relying on it.
Learn how Ubuntu's Netplan abstracts network configuration for systemd‑networkd and NetworkManager, and how to safely apply static IP settings using 'netplan try'.
Ubuntu 18.04 LTS and subsequent versions utilize Netplan to abstract network configuration via YAML files. A key design decision involves selecting the backend renderer, typically choosing between systemd-networkd for server environments and NetworkManager for desktop or dynamic setups. When transitioning a production interface from NetworkManager to systemd
UFW Application Profiles and Rule Ordering The Uncomplicated Firewall (UFW) allows the activation of predefined service rules through application profiles. When a user executes ufw allow for a specific profile, UFW translates these profiles into underlying iptables or nftables rules. A challenge arises when combining application profiles with custom manual r
Network Configuration Safety Mechanism Ubuntu uses Netplan as a declarative abstraction layer to manage network settings via backend renderers such as systemd-networkd or NetworkManager. To prevent permanent loss of connectivity during remote configuration changes, the netplan try command implements a timeout-based rollback mechanism. Configuration Uncertain
ssh