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greg0ire
Asked: 2015-08-06 04:25:27 +0800 CST

nameserver not falling back

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I'm trying to use several nameserver, each one is able to resolve some hosts the other does not.

Here is my resolv.conf :

options timeout:1

# This one is used to resolve hostnames for servers internal to my company
nameserver 127.0.1.1

And this one is used to resolve hostnames for docker hosts I have on my machine
nameserver 172.17.42.1
# Dynamic resolv.conf(5) file for glibc resolver(3) generated by resolvconf(8)
#     DO NOT EDIT THIS FILE BY HAND -- YOUR CHANGES WILL BE OVERWRITTEN
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When using this order, I cannot resolve the docker hosts. When I put the docker nameserver declaration first, I can. How can I resolve both groups of hostnames ?

nameserver

1 Answers

  1. Best Answer

    This is not how this works. If you get a negative reply from a DNS server, the system will not ask a second server but just assumes the name doesn't exist.

    You will have to configure your local nameserver to resolve your local names and then recurse/forward for all non-local domains and only use this local nameserver in your resolv.conf.

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