[erlang-questions] Comodo PositiveSSL certificates with Cowboy 1.x

Ali Sabil <>
Fri Dec 30 13:03:02 CET 2016

Hi Frank,

I don't remember the exact details, but you should have received a zip file
with a set of certificates. This zip file should contain
1. your certificate (foo_com.crt)
2. a set of intermediary certificates (intermediate1.crt, intermediate2.crt)
3. the root certificate (root.crt)

You will need to concatenate all the intermediaries starting from the last
one into what's called a intermediary certificate chain:
    cat intermediate2.crt intermediate1.crt > chain.crt

The configuration of cowboy is then done using the `certfile` and `
cacertfile` options, for example:
    {certfile, "foo_com.crt"},
    {cacertfile, "chain.crt"}

These options are specified in the documentation of the Erlang SSL app (

Hope this helps,

On Fri, Dec 30, 2016 at 11:24 AM Frank Muller <>

> Hi guys,
> I would like to configure my "Comodo PositiveSSL" certificates with
> Cowboy.
> So far the self-signed OpenSSL certificates I've generated worked as
> expected. But I've no idea how to configure the "Comodo" ones.
> Can someone point me to a tutorial please? Or help on the setup?
> Thanks in advance.
> N.B: Comodo provides explanations for Nginx, Apache, etc. But not Cowboy
> unfortunately :-(
> Happy new year !!!
> /Frank
> _______________________________________________
> erlang-questions mailing list
> http://erlang.org/mailman/listinfo/erlang-questions
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://erlang.org/pipermail/erlang-questions/attachments/20161230/91e8e796/attachment.html>

More information about the erlang-questions mailing list