/etc/network/interfaces is gone in 18.04 and netplan is what reads the configuration now, which is a surprise best encountered before the reboot rather than after it. netplan try…
A one-gigabyte VPS running MySQL, PHP and nginx has no headroom, and the kernel resolves that by killing the largest process — which is MySQL, mid-write. Swappiness at…
The April LTS changes two things at the same time, and either one alone would be a migration. service still works because systemd ships a compatibility shim, which…
Free certificates went GA this month. Automating issuance and renewal, the rate limits that catch staging first, and the monitoring that has to outlive the automation.
A week-old server already sees thousands of login attempts a day. Key-only SSH, a firewall, fail2ban and monit — and the recovery plan for locking yourself out.