Beware that there’s an issue with DNS in Kubernetes 1.25.0 (therefore k3s has it as well) and Alpine (musl).

So, first of all: it’s always DNS. Secondly, it seems like Kubernetes 1.25.1 has a fix for this. So, you may want to jump straight to that version and skip 1.25.0 all together.

Frankly, you probably always should jump to the first patch version if you want to play safe.

Another thing is that this is not the first time when musl specifically is affected. So again, if you want to play safe, it’s probably better to use “slim”, “distroless”, or “scratch” images.

#kubernetes #dns