Project: mesos
Issue MESOS-5863: Enabling SSL causes fetcher fail to fetch from HTTPS sites.
This is because curl (which fetcher relies on) also relies on some of the environment variables used by libprocess SSL support. For instance, `SSL_CERT_FILE`. If the operator sets `SSL_CERT_FILE` env var for Mesos agent, the fetcher will inherit this env var and cause curl to fail: {noformat} [centos@ip-10-10-0-205 ~]$ SSL_CERT_FILE=/run/dcos/pki/tls/certs/mesos-slave.crt curl https://registry-1.docker.io:443/v2/library/alpine/manifests/latest curl: (60) SSL certificate problem: unable to get local issuer certificate More details here: https://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a "bundle" of Certificate Authority (CA) public keys (CA certs). If the default bundle file isn't adequate, you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option. [centos@ip-10-10-0-205 ~]$ curl https://registry-1.docker.io:443/v2/library/alpine/manifests/latest {"errors":[{"code":"UNAUTHORIZED","message":"authentication required","detail":[{"Type":"repository","Name":"library/alpine","Action":"pull"}]}]} {noformat} To solve this problem, we deprecated the existing `SSL_` env variables and used `LIBPROCESS_SSL_` instead. To be backward compatible, we still accept `SSL_` env variables for the time being.
Story points: 3