ruby on rails - Change HTTPI SSL default cert file location with environment variable -

according this page can see httpi looking ssl certificate based on openssl::x509::default_cert_file constant:

2.1.5 :008 > openssl::x509::default_cert_file  => "/usr/lib/ssl/cert.pem" 

my certificates elsewhere page says can change path ruby looks @ using environment variable ssl_cert_file. did in .bashrc:

export ssl_cert_file=/etc/ssl/certs/ca-certificates.crt 

rails finds environment variable:

2.1.5 :007 > env['ssl_cert_file']  => "/etc/ssl/certs/ca-certificates.crt" 

but has no effect on openssl constant:

2.1.5 :008 > openssl::x509::default_cert_file  => "/usr/lib/ssl/cert.pem" 

is page wrong effect of setting ssl_cert_file? or constant never change , affects other setting? ultimately, certificate not being found, need know how / how inspect / how set it.

first prize similar approach default set environment variable because not want hardcode path certificate.

i don't know ruby part, experience openssl code don't think setting environment ssl_cert_file change content of default_cert_file. still change openssl looks certificates: if ssl_cert_file given take value , otherwise take value in default_cert_file. how openssl works internally.