470
The Beauty Of Having A Pi-hole · Den Delimarsky (den.dev)
submitted 1 year ago by to c/technology@lemmy.world
117 comments fedilink hide all child comments
you are viewing a single comment's thread
view the rest of the comments
[–] 6 points 1 year ago (1 child)

Randomly? No, only when your pi goes down

Not how secondary DNS works. It round robins the requests across primary and secondary DNS servers.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 2 child comments
    •
  • [–] 1 point 1 year ago (2 children)

    Why call it secondary then, that's so counterintuitive lol 😭 I guess "the second hardest problem in computer science" applies because I can't think of a better name either.

  • permalink
  • fedilink
  • source
  • parent
  • hideshow 4 child comments
    •
  • [–] 2 points 1 year ago*

    Different Operating Systems call it different things. Windows calls it Alternate. Even if it was only used when the primary was down, DNS doesn't provide any sort of guidance or standard on when to switch between primary and secondary. Is one query timeout enough to switch? How often do you reattempt to the first DNS server? When do you switch back? With individual queries, you can timeout and hit another NS server, but that's a lot easier at an individual level than to infer a global system state from one query timing out.

  • permalink
  • fedilink
  • source
  • parent
  • [–] 2 points 1 year ago

    Why call it secondary then, that’s so counterintuitive lol

    I don't think that's even the official naming. It probably comes from what Windows 95 called it back in the day:

    On Linux, it's just an additional "nameserver x.x.x.x" line in /etc/resolv.conf, with no indication of which is the "primary" or "secondary".

  • permalink
  • fedilink
  • source
  • parent