kubernetes.io/ingress.class ： nginx

跨域

nginx.ingress.kubernetes.io/cors-allow-credentials ： true
nginx.ingress.kubernetes.io/cors-allow-methods ：PUT, GET, POST, DELETE, PATCH, OPTIONS
nginx.ingress.kubernetes.io/enable-cors： true
nginx.ingress.kubernetes.io/proxy-connect-timeout： 6000
nginx.ingress.kubernetes.io/proxy-read-timeout:6000
nginx.ingress.kubernetes.io/proxy-send-timeout:6000
nginx.ingress.kubernetes.io/service-upstream:true