diff --git a/t/chaos/go.mod b/t/chaos/go.mod
index 2db9fac6b054..336be3257246 100644
--- a/t/chaos/go.mod
+++ b/t/chaos/go.mod
@@ -4,6 +4,7 @@ require (
 	github.com/chaos-mesh/chaos-mesh v1.1.1
 	github.com/gavv/httpexpect/v2 v2.1.0
 	github.com/onsi/gomega v1.9.0
+	github.com/pkg/errors v0.9.1
 	k8s.io/api v0.17.0
 	k8s.io/apimachinery v0.17.0
 	k8s.io/client-go v0.17.0
diff --git a/t/chaos/kill-etcd_test.go b/t/chaos/kill-etcd_test.go
index f001b864447a..62a4578d48e3 100644
--- a/t/chaos/kill-etcd_test.go
+++ b/t/chaos/kill-etcd_test.go
@@ -93,7 +93,8 @@ func TestGetSuccessWhenEtcdKilled(t *testing.T) {
 	apisixPod := getPod(g, cliSet.ctrlCli, metav1.NamespaceDefault, listOption)
 
 	t.Run("error log not contains etcd error", func(t *testing.T) {
-		errorLog := execInPod(g, cliSet.kubeCli, apisixPod, "cat logs/error.log")
+		errorLog, err := log(apisixPod, cliSet.kubeCli)
+		g.Expect(err).To(BeNil())
 		g.Expect(strings.Contains(errorLog, "failed to fetch data from etcd")).To(BeFalse())
 	})
 
@@ -110,7 +111,8 @@ func TestGetSuccessWhenEtcdKilled(t *testing.T) {
 	testPrometheusEtcdMetric(e, 0)
 
 	t.Run("error log contains etcd error", func(t *testing.T) {
-		errorLog := execInPod(g, cliSet.kubeCli, apisixPod, "cat logs/error.log")
+		errorLog, err := log(apisixPod, cliSet.kubeCli)
+		g.Expect(err).To(BeNil())
 		g.Expect(strings.Contains(errorLog, "failed to fetch data from etcd")).To(BeTrue())
 	})
 
diff --git a/t/chaos/kube_utils.go b/t/chaos/kube_utils.go
index f672f25ec135..13e5b8a39101 100644
--- a/t/chaos/kube_utils.go
+++ b/t/chaos/kube_utils.go
@@ -21,10 +21,12 @@ import (
 	"bytes"
 	"context"
 	"fmt"
+	"io"
 	"strings"
 
 	"github.com/chaos-mesh/chaos-mesh/api/v1alpha1"
 	. "github.com/onsi/gomega"
+	"github.com/pkg/errors"
 	corev1 "k8s.io/api/core/v1"
 	"k8s.io/apimachinery/pkg/runtime"
 	"k8s.io/client-go/kubernetes"
@@ -100,3 +102,21 @@ func execInPod(g *WithT, cli *kubernetes.Clientset, pod *corev1.Pod, cmd string)
 	}
 	return stdout.String()
 }
+
+func log(pod *corev1.Pod, c *kubernetes.Clientset) (string, error) {
+	podLogOpts := corev1.PodLogOptions{}
+
+	req := c.CoreV1().Pods(pod.Namespace).GetLogs(pod.Name, &podLogOpts)
+	podLogs, err := req.Stream()
+	if err != nil {
+		return "", errors.Wrapf(err, "failed to open log stream for pod %s/%s", pod.GetNamespace(), pod.GetName())
+	}
+	defer podLogs.Close()
+
+	buf := new(bytes.Buffer)
+	_, err = io.Copy(buf, podLogs)
+	if err != nil {
+		return "", errors.Wrapf(err, "failed to copy information from podLogs to buf")
+	}
+	return buf.String(), nil
+}