silverdr
I have a mix release application running in a container but it seems to have problems with cacerts. If I run:
docker exec -it 1773f1bd7685 bin/myapp eval ':public_key.cacerts_get()'
I get:
** (UndefinedFunctionError) function :public_key.cacerts_get/0 is undefined or private
(public_key 1.12.0.2) :public_key.cacerts_get()
(stdlib 3.17.2.4) erl_eval.erl:685: :erl_eval.do_apply/6
(elixir 1.16.2) lib/code.ex:572: Code.validated_eval_string/3
What do I need to do in order to have the said function available?
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D4no0
Does it work on your local environment?
silverdr
Yes, it does
LostKobrakai
That version of OTP and elixir are you using?
silverdr
Hmm, if you mean whether I use the same locally and on prod then no… On prod I downgraded OTP to 24 due to the TLSv1.3 horror story I encountered and described in other thread. Elixir is the same (1.16.2) though, although I guess that doesn’t matter much in the case at hand
D4no0
So are you using releases or you build releases on a different host?
silverdr
I build releases using this “builder” image:
D4no0
OTP-24 doesn’t have the
cacerts_get/0inpublic_key: Erlang -- public_keysilverdr
That explains. Is there some kind of equivalent in 24, maybe?
D4no0
All the functionality related to CA checks and loading was introduced starting from OTP-25, you can always fetch them manually from the system.
I’m not 100% sure with what downgrading of OTP helps, but if there are specific algorithms that have holes in them, you can always disable them by configuration.
silverdr
The downgrade was done this morning due to OTP bug introduced in 25 and passed over to 26, which caused critical functionality (email) to suddenly stop working after applying security updates to mail server (sic!)
I see - would you suggest any “proper” way of doing this?