Trying to build a white label phx app denoted by subdomains and mix phx.gen.secret

[polygonpusher]

I’ve been trying to generate a self signed cert that I can use for local development that supports the primary domain (ie localhost) and any number of subdomains (ie foo.localhost, bar.localhost)

I’ve hit a wall when it comes to generating a cert that will work for my needs.

I’ve tried a number of ways to try and generate the cert but have failed every time to get both the domains to work. I also since forgot which I’ve tried so I’m hay to try again and document here for others.

Any help is appreciated

PS: I should also note this white label app is for free hosting for elixir user groups.
https://github.com/PDX-Elixir-Group/elixir.group

best.
– Josh

[polygonpusher]

I have found that you can specific multiple domains with
mix phx.gen.cert localhost foo.localhost

And while this will work for the short term, I’m still gonna look for the wildcard equivalent.

[hauleth]

Generate them on your own instead of relying on Phoenix. Makefile for that:

NAME     = localhost
DOMAIN   = *.localhost

KEY      = ${NAME}.key
SIGN_REQ = ${NAME}.csr
CERT     = ${NAME}.crt

SUBJECT = "/C=US/ST=Connecticut/O=/localityName=New Haven/commonName=$(DOMAIN)/commonName=localhost/organizationalUnitName=/emailAddress=/"

all: ${CERT}

clean:
	$(RM) -rf ${KEY} ${CERT} ${SIGN_REQ}

verify: ${CERT}
	openssl x509 -noout -text -in $<

${KEY}:
	openssl genrsa -out "$@" 2048

${SIGN_REQ}: ${KEY}
	openssl req -new -sha256 -subj $(SUBJECT) -key "$<" -out "$@" -passin pass:""

${CERT}: ${SIGN_REQ} ${KEY}
	openssl x509 -req -days 365 -in "${SIGN_REQ}" -signkey "${KEY}" -out "$@"

.PHONY: all clean verify

[polygonpusher]

I think the issue is with the wildcard dns not with the way its being generated.