By creating a Certificate Authority (a.k.a., a “CA”) and trusting it locally, any certificate that we create using this CA will also be trusted locally. This can simplify the development of HTTPS websites on your local machine. This content is a fork of, and is largely based on, “Generating Self-Signed SSL Certificates for Use with Bluemix Custom Domains”, by Tony Erwin, dated 2014-09-15. The examples in this tutorial are from macOS Sierra (10.12). Create a local Certificate Authority Start by opening Keychain Access.

Only a tiny fraction of the code your application runs was written by you or your team. How do you know you can trust the code that was written by other people? Where would you even start? This piece is part of a larger series on Engineering for Site Reliability, specifically balancing stability against the edge of technology. What do I mean by “trust”? Movies and TV shows have given us a version of trust which essentially boils down to “Do you trust me?