20.04 arrived in April and netplan is no longer the new thing — which means the older configuration people still copy from notes does nothing at all. netplan…
Buster defaults to the nftables backend with an iptables compatibility shim, so iptables -L and nft list ruleset can show different things and both are telling the truth.…
Managing authorized_keys across thirty servers means a configuration run to add a colleague and another to remove one, and the removal is the one that gets forgotten. Access…
The question was how to deploy four services, and the answer arrived before it. Naming what you actually need — scheduling, health, rolling deploys, secrets.