Setup `dnsmasq` on Mac M1

README.md

Install dnsmasq

brew install dnsmasq

Configure dnsmasq.conf

I will run my dnsmasq nameserver locally under 127.0.0.1:53 and will resolve a wildcard domain *.ml-dev.test to an local IP. Look for the line listen-address and address

sudo vim /opt/homebrew/etc/dnsmasq.conf

• Update the config file as following

#except-interface=
# Or which to listen on by address (remember to include 127.0.0.1 if
# you use this.)
#listen-address=
listen-address=127.0.0.1

....

# Add domains which you want to force to an IP address here.
# The example below send any host in double-click.net to a local
# web-server.
#address=/double-click.net/127.0.0.1
address=/.localtest.me/10.0.0.18

Start dnsmasq

• Make sure there is no other dnsmasq service is running

ps aux | grep dnsmasq

dnguyen          16635   0.5  0.0 407962096    112 s025  U+   11:15AM   0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn --exclude-dir=.idea --exclude-dir=.tox dnsmasq

• Launch dnsmasq with sudo

sudo brew services start dnsmasq  

dnguyen          16635   0.5  0.0 407962096    112 s025  U+   11:15AM   0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn --exclude-dir=.idea --exclude-dir=.tox dnsmasq
nobody           16065   0.2  0.0 408665232    944   ??  Ss   11:12AM   0:00.23 /opt/homebrew/opt/dnsmasq/sbin/dnsmasq --keep-in-foreground -C /opt/homebrew/etc/dnsmasq.conf -7 /opt/homebrew/etc/dnsmasq.d,*.conf

Test connection and update resolver

$ dig wow.localtest.me @127.0.0.1

; <<>> DiG 9.10.6 <<>> wow.ml-dev.test @127.0.0.1
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 61146
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 4096
;; QUESTION SECTION:
;wow.localtest.me.		IN	A

;; ANSWER SECTION:
wow.localtest.me.	0	IN	A	10.0.0.18
;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Wed Jan 10 11:20:47 PST 2024
;; MSG SIZE  rcvd: 60

• Create a directory /etc/resolver and add the new file /etc/resolver/ml-dev.test

nameserver 127.0.0.1

• Test if Mac's using your dnsmasq server

sudo dscacheutil -flushcache
$ dscacheutil -q host -a name argocd.localtest.me

name: argocd.localtest.me
ip_address: 10.0.0.18