Why redis, why?! You run "redis-cli -h <host>" and it looks like either it cannot connect to <host> or the redis-cli is frozen.

What was the fix? Adding "--tls" to the call. Why can't you just say "You are starting a non-tls connection to a remote but the remote wants to talk TLS"? Or give any other indication that you did reach the server but did not understand what it said and hint for TLS? I was hunting non-existent connectivity issues for hours just because there wasn't a good error message...