Terraform configuration to work behind proxy

Hello All,

I have configured squid proxy with SSL-bump on one of my server and terraform on another server. I have set http_proxy and https_proxy env variables. terraform is able to communicate through proxy but I don’t have clarity regarding which CA bundle its using for communicating with squid proxy. how can we check this, any env variable terraform uses? is there way to provide path of CA bundle?

Any guidance is appreciated.