Tag: systemd

journald already stores structured key/value log fields. Learn to write custom fields, query them, and ship logs to one box before reaching for Loki or ELK.

systemd-homed turns your home dir into a portable LUKS-encrypted blob. Move it between machines, unlock with FIDO2, and own your own data.

cgroups v2 unified hierarchy explained: read /sys/fs/cgroup/, limit CPU/IO/memory, use systemd slices and PSI pressure files.

systemd-resolved does way more than mangle /etc/resolv.conf. Here's how its stub resolver, split DNS, DoT, DNSSEC, and resolvectl actually work.

systemd-nspawn ships on every modern Linux box and most sysadmins have never touched it. Here's when this no-daemon, no-Docker-socket container runtime is actually the right tool.

Cron has been scheduling your jobs since before you were born. Systemd timers do everything cron does, plus logging, dependencies, and missed-run recovery.

Learn systemd socket activation to start services on-demand, save RAM, and cut boot time. Includes .socket unit files, real examples, and testing with systemd-socket-activate.

Podman skips the root daemon Docker needs. Quadlets let systemd manage containers natively, with auto-updates and health checks, for self-hosting without Compose.

Your Linux box takes forever to boot? systemd-analyze shows exactly which services drag it down. Read blame, critical-chain, plot, and fix the slow ones.

systemctl status packs a lot into 12 lines. What Loaded, Active, Invocation, Main PID, Tasks, and the CGroup tree each tell you when a service misbehaves.

Essential journalctl commands: -u, -f, --since, -p, -k, -b, --no-pager, JSON output. The queries you need on a broken server at 2 AM.

Service restart not showing logs? systemd hides stdout. Learn journalctl, systemctl status, and debugging workflows for silent systemd failures.