Kubernetes Invalid host header code example

Example 1: invalid Host header in ngrok

ngrok http 8080 -host-header="localhost:8080"
ngrok http --host-header=rewrite 8080

Example 2: webpack server return invalid host header

devServer: {
  compress: true,
  public: 'store-client-nestroia1.c9users.io' // That solved it
}