diff --git a/ray-operator/controllers/ray/utils/dashboard_httpclient.go b/ray-operator/controllers/ray/utils/dashboard_httpclient.go
index df3c19248f..0414d41d6f 100644
--- a/ray-operator/controllers/ray/utils/dashboard_httpclient.go
+++ b/ray-operator/controllers/ray/utils/dashboard_httpclient.go
@@ -178,6 +178,9 @@ func (r *RayDashboardClient) GetDeployments() (string, error) {
 	defer resp.Body.Close()
 
 	body, _ := ioutil.ReadAll(resp.Body)
+	if resp.StatusCode < 200 || resp.StatusCode > 299 {
+		return "", fmt.Errorf("GetDeployments fail: %s %s", resp.Status, string(body))
+	}
 
 	return string(body), nil
 }
@@ -210,6 +213,11 @@ func (r *RayDashboardClient) UpdateDeployments(specs rayv1alpha1.ServeDeployment
 	}
 	defer resp.Body.Close()
 
+	body, _ := ioutil.ReadAll(resp.Body)
+	if resp.StatusCode < 200 || resp.StatusCode > 299 {
+		return fmt.Errorf("UpdateDeployments fail: %s %s", resp.Status, string(body))
+	}
+
 	return nil
 }
 
@@ -228,6 +236,10 @@ func (r *RayDashboardClient) GetDeploymentsStatus() (*ServeDeploymentStatuses, e
 
 	body, _ := ioutil.ReadAll(resp.Body)
 
+	if resp.StatusCode < 200 || resp.StatusCode > 299 {
+		return nil, fmt.Errorf("GetDeploymentsStatus fail: %s %s", resp.Status, string(body))
+	}
+
 	var serveStatuses ServeDeploymentStatuses
 	if err = json.Unmarshal(body, &serveStatuses); err != nil {
 		return nil, err
diff --git a/ray-operator/controllers/ray/utils/httpproxy_httpclient.go b/ray-operator/controllers/ray/utils/httpproxy_httpclient.go
index 4615de3642..471f5a5565 100644
--- a/ray-operator/controllers/ray/utils/httpproxy_httpclient.go
+++ b/ray-operator/controllers/ray/utils/httpproxy_httpclient.go
@@ -2,6 +2,7 @@ package utils
 
 import (
 	"fmt"
+	"io/ioutil"
 	"net/http"
 	"time"
 )
@@ -51,5 +52,10 @@ func (r *RayHttpProxyClient) CheckHealth() error {
 	}
 	defer resp.Body.Close()
 
+	body, _ := ioutil.ReadAll(resp.Body)
+	if resp.StatusCode < 200 || resp.StatusCode > 299 {
+		return fmt.Errorf("RayHttpProxyClient CheckHealth fail: %s %s", resp.Status, string(body))
+	}
+
 	return nil
 }