Add /status/:code

app.rb

@@ -2,6 +2,7 @@ require "bundler/setup"
 require "sinatra"
 require "sinatra/json"
 require "sinatra/cookies"
+require "sinatra/multi_route"
 require "time"
 require "fileutils"
 require "json"
@@ -355,3 +356,8 @@ get "/_cat/cookies" do
     end
   end
 end
+
+route :delete, :get, :patch, :post, :put, "/status/:code" do
+  code = params[:code]
+  status code.between? 100, 599
+end

kustomize/app/rollout.yaml

@@ -4,7 +4,7 @@ kind: Rollout
 metadata:
   name: toy
 spec:
-  replicas: 5
+  replicas: 4
   strategy:
     canary:
       steps: