diff --git a/cmd/manager.go b/cmd/manager.go
index dd9b281b7..23088922c 100644
--- a/cmd/manager.go
+++ b/cmd/manager.go
@@ -52,6 +52,7 @@ func init() {
 	managerCmd.PersistentFlags().StringVar(&sbm.ImagePullPolicy, "image-pull-policy", os.Getenv("SUPPORT_BUNDLE_IMAGE_PULL_POLICY"), "Pull policy of the support bundle image")
 	managerCmd.PersistentFlags().StringVar(&sbm.NodeSelector, "node-selector", os.Getenv("SUPPORT_BUNDLE_NODE_SELECTOR"), "NodeSelector of agent DaemonSet. e.g., key1=value1,key2=value2")
 	managerCmd.PersistentFlags().StringVar(&sbm.RegistrySecret, "registry-secret", os.Getenv("SUPPORT_BUNDLE_REGISTRY_SECRET"), "The registry secret for image pull")
+	managerCmd.PersistentFlags().StringVar(&sbm.SpecifyCollector, "specify-collector", os.Getenv("SUPPORT_BUNDLE_COLLECTOR"), "Execute specify collector script. e.g., longhorn")
 	managerCmd.PersistentFlags().StringSliceVar(&sbm.ExcludeResourceList, "exclude-resources", getEnvStringSlice("SUPPORT_BUNDLE_EXCLUDE_RESOURCES"), "List of resources to exclude. e.g., settings.harvesterhci.io,secrets")
 	managerCmd.PersistentFlags().StringSliceVar(&sbm.BundleCollectors, "extra-collectors", getEnvStringSlice("SUPPORT_BUNDLE_EXTRA_COLLECTORS"), "Get extra resource for the specific components e.g., harvester")
 }
diff --git a/hack/collector-default b/hack/collector-longhorn
similarity index 78%
rename from hack/collector-default
rename to hack/collector-longhorn
index 337d3a90d..a66ca0c0a 100644
--- a/hack/collector-default
+++ b/hack/collector-longhorn
@@ -10,10 +10,10 @@ function collect_sysinfo(){
     cd ${BUNDLE_DIR}
     mkdir -p hostinfos
     cd hostinfos
-    
-    echo "hostname : " `cat ${HOST_PATH}/etc/hostname` > hostinfo
-    echo "os-release : " `cat ${HOST_PATH}/etc/os-release` >> hostinfo
-    echo "system-info : " `uname -a` >> hostinfo
+
+    echo -e "hostname : \n `cat ${HOST_PATH}/etc/hostname | sed "s/^/\t/"`" > hostinfo
+    echo -e "os-release : \n `cat ${HOST_PATH}/etc/os-release | sed "s/^/\t/"`" >> hostinfo
+    echo -e "system-info : \n `uname -a | sed "s/^/\t/"`" >> hostinfo
 
     # Boot Configuration
     cat ${HOST_PATH}/boot/config-$(uname -r) > kernel_config
@@ -24,7 +24,7 @@ function collect_dmesg(){
 }
 
 function collect_syslog(){
-    tail -c 10m ${HOST_PATH}/var/log/syslog > syslog.log
+    cp ${HOST_PATH}/var/log/syslog* .
 }
 
 function collect_kubelet_log(){
diff --git a/hack/support-bundle-collector.sh b/hack/support-bundle-collector.sh
index 17bcde562..f23985e0d 100755
--- a/hack/support-bundle-collector.sh
+++ b/hack/support-bundle-collector.sh
@@ -21,12 +21,17 @@ if [ -z "$OS_ID" ]; then
     exit 1
 fi
 
-OS_COLLECTOR="collector-$OS_ID"
+if [ -n "$SUPPORT_BUNDLE_COLLECTOR" ]; then
+    OS_COLLECTOR="collector-$SUPPORT_BUNDLE_COLLECTOR"
+else
+    OS_COLLECTOR="collector-$OS_ID"
+fi
+echo "OS_COLLECTOR="${OS_COLLECTOR}
+
 if [ -x "$(which $OS_COLLECTOR)" ]; then
     $OS_COLLECTOR $HOST_PATH $BUNDLE_DIR
 else
     echo "No OS collector found"
-    collector-default $HOST_PATH $BUNDLE_DIR
 fi
 
 cd ${OUTPUT_DIR}
diff --git a/pkg/manager/agent.go b/pkg/manager/agent.go
index 3c99f0470..ff6c0554e 100644
--- a/pkg/manager/agent.go
+++ b/pkg/manager/agent.go
@@ -4,12 +4,13 @@ import (
 	"fmt"
 
 	"github.com/pkg/errors"
-	"github.com/rancher/support-bundle-kit/pkg/types"
 	"github.com/sirupsen/logrus"
 	appsv1 "k8s.io/api/apps/v1"
 	corev1 "k8s.io/api/core/v1"
 	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/rancher/support-bundle-kit/pkg/types"
 )
 
 type AgentDaemonSet struct {
@@ -100,6 +101,10 @@ func (a *AgentDaemonSet) Create(image string, managerURL string) error {
 									Name:  "SUPPORT_BUNDLE_MANAGER_URL",
 									Value: managerURL,
 								},
+								{
+									Name:  "SUPPORT_BUNDLE_COLLECTOR",
+									Value: a.sbm.SpecifyCollector,
+								},
 							},
 							VolumeMounts: []corev1.VolumeMount{
 								{
diff --git a/pkg/manager/manager.go b/pkg/manager/manager.go
index f2d1aabd4..80299c776 100644
--- a/pkg/manager/manager.go
+++ b/pkg/manager/manager.go
@@ -41,6 +41,7 @@ type SupportBundleManager struct {
 	ExcludeResources    []schema.GroupResource
 	ExcludeResourceList []string
 	BundleCollectors    []string
+	SpecifyCollector    string
 
 	context context.Context