Image for a hint

Assume you have to manage multiple domains in your local setup, for example, you have a multi-workspace host-name based app (like web-version of Slack in the past):

domain.loc 127.0.0.1


workspace1.domain.loc 127.0.0.1


workspace2.domain.loc 127.0.0.1


workspace3.domain.loc 127.0.0.1

Or multinode scaled DNS-based app. All these cases make management via editing /etc/hosts file not super handly

Create file ./bind_inventory/run_bind.sh :

#!/bin/bash


SCRIPTDIR="$( cd "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"


# TODO: add record to /etc/systemd/resolve.conf file


docker build $SCRIPTDIR -t tracklify_local_bind


sudo docker run -p 127.0.0.1:53:53/udp --restart=always -d tracklify_local_bind

./bind_inventory/Dockerfile:

FROM jpillora/dnsmasq


ADD dnsmasq.conf /etc/dnsmasq.conf

./bind_inventory/dnsmasq.conf:

# this is file with DNS rules, here we map all domain.loc and subdomains to 127.0.0.1


address=/domain.loc/127.0.0.1

Run DNS container:

./bind_inventory/run_bind.sh

Replace Resolve record in /etc/systemd/resolved.conf to look like:

[Resolve]


DNS=127.0.0.1


Domains=~.


DNSStubListener=yes


#FallbackDNS=


#LLMNR=no


#MulticastDNS=no


#DNSSEC=no


#DNSOverTLS=no


#Cache=no-negative


#ReadEtcHosts=yes

3. Restart systemd-resolved

sudo systemctl restart systemd-resolved

4. Test if it's working run.

host domain.loc


host sub.domain.loc

In case it didn't work try restarting Linux.

After the restart just test if the host the command returns host for domain.loc domain.

#dns