Linux Containers (LXC)
Reference for LXC OS-level virtualization on Linux: architecture, installation, container lifecycle, networking, cgroup v2 resource limits, security hardening, and troubleshooting.
Linux
LUKS
Reference for LUKS full-disk and partition encryption with cryptsetup, covering setup, key management, header backup, automated decryption, and recovery.
LVM
LVM is a device-mapper framework for Linux that abstracts physical storage into logical volumes. Covers creating, extending, reducing, thin provisioning, snapshots, LUKS layering, caching, RAID, and migration.
mdadm
Reference for managing Linux software RAID arrays with mdadm and the kernel md driver: creating arrays, persistent configuration, monitoring, disk failure recovery, write-intent bitmaps, and troubleshooting.
MongoDB
Reference for running MongoDB: installation, configuration, authentication, CRUD, indexing, aggregation, replica sets, sharding, backup, performance tuning, monitoring, and troubleshooting.
NetworkManager
Reference for managing wired, wireless, VPN, bond, bridge, and VLAN connections on Linux with NetworkManager via nmcli and nmtui. Covers connection profiles, static and DHCP IP setup, WiFi security, dispatcher scripts, …
NFS
Reference for setting up NFS servers and clients on Linux, covering NFSv3 vs NFSv4, exports, firewall ports, mount options, Kerberos, performance tuning, and troubleshooting.
NFTables
Reference for the nftables packet filtering framework: address families, tables, chains, rules, sets and maps, NAT, rate limiting, rule management, and migration from iptables.
Nginx
Reference for configuring Nginx as a web server, reverse proxy, and load balancer, covering upstreams, maps, WebSocket and gRPC proxying, TCP/UDP stream proxying, authentication, rate limiting, caching, FastCGI, and …
RAID
Reference for RAID levels 0, 1, 5, 6, and 10: redundancy, performance, hardware vs software RAID, rebuild and URE risk, scrubbing, cost comparison, and troubleshooting.