Dude I’m a devops engineer and I totally get it when an app in my cluster goes down and customers start to freakout. However, I get paid to deal with it. Whereas you are doing this as I imagine as a side fun thing. You have ran this entire thing super professional since the beginning. You are doing great. If it was an istio thing that caused your containers to not talk… Believe me when I tell you that is my hell (that I’m currently experience now with one particular app).