Support both GET and POST methods for /exec and /portforward

pkg/registry/pod/etcd/etcd.go

@@ -283,7 +283,8 @@ func (r *ProxyREST) Connect(ctx api.Context, id string, opts runtime.Object) (re
 	return genericrest.NewUpgradeAwareProxyHandler(location, nil, false), nil
 }
 
-var upgradeableMethods = []string{"GET"}
+// Support both GET and POST methods. Over time, we want to move all clients to start using POST and then stop supporting GET.
+var upgradeableMethods = []string{"GET", "POST"}
 
 // ExecREST implements the exec subresource for a Pod
 type ExecREST struct {

pkg/registry/pod/rest.go

@@ -249,7 +249,7 @@ func ExecLocation(getter ResourceGetter, connInfo client.ConnectionInfoGetter, c
 	nodeHost := pod.Spec.NodeName
 	if len(nodeHost) == 0 {
 		// If pod has not been assigned a host, return an empty location
-		return nil, nil, fmt.Errorf("pod %s does not have a host assigned", name)
+		return nil, nil, errors.NewBadRequest(fmt.Sprintf("pod %s does not have a host assigned", name))
 	}
 	nodeScheme, nodePort, nodeTransport, err := connInfo.GetConnectionInfo(nodeHost)
 	if err != nil {