diff --git a/bsroot.sh b/bsroot.sh
index f33aca2..d8a2489 100755
--- a/bsroot.sh
+++ b/bsroot.sh
@@ -22,14 +22,15 @@
 # bootstrap server when the bootstrapper server is "offline". Or, you can run
 # bsroot.sh directly on the bootstrap server.
 
+alias cp='cp'
+
 SEXTANT_ROOT=${PWD}
+source $SEXTANT_ROOT/scripts/log.sh
 source $SEXTANT_ROOT/scripts/common.sh
 
 check_prerequisites
 check_cluster_desc_file
 
-
-
 echo "Install OS: ${cluster_desc_os_name}"
 if [[ $cluster_desc_os_name == "CentOS" ]]; then
     source $SEXTANT_DIR/scripts/centos.sh
@@ -63,3 +64,4 @@ build_bootstrapper_image
 generate_tls_assets
 prepare_setup_kubectl
 generate_addons_config
+log info "bsroot done!"
diff --git a/docker/Dockerfile b/docker/Dockerfile
index 037f8c1..58d19e7 100644
--- a/docker/Dockerfile
+++ b/docker/Dockerfile
@@ -1,5 +1,4 @@
-FROM alpine
-#FROM golang:alpine
+FROM distribution/registry
 
 # Install required software packages.
 RUN set -ex && \
@@ -9,7 +8,6 @@ apk add dnsmasq openssl
 # Upload Sextant Go programs and retrieve dependencies.
 RUN mkdir -p /go/bin
 COPY cloud-config-server /go/bin
-COPY registry            /go/bin
 
 # NOTICE: change install.sh HTTP server ip:port when running entrypoint.sh
 COPY entrypoint.sh /
diff --git a/docker/entrypoint.sh b/docker/entrypoint.sh
index c886f77..258ab50 100755
--- a/docker/entrypoint.sh
+++ b/docker/entrypoint.sh
@@ -1,9 +1,16 @@
 #!/bin/sh
 
-# start dnsmasq
-mkdir -p /bsroot/dnsmasq
-dnsmasq --log-facility=-  --conf-file=/bsroot/config/dnsmasq.conf \
-  --dhcp-leasefile=/bsroot/dnsmasq/dnsmasq.leases
+if [[ $# != 1 ]]; then
+    echo "need to set start_pxe"
+    exit 1
+fi
+
+if [[ $1 == " y" ]]; then
+    # start dnsmasq
+    mkdir -p /bsroot/dnsmasq
+    dnsmasq --log-facility=-  --conf-file=/bsroot/config/dnsmasq.conf \
+      --dhcp-leasefile=/bsroot/dnsmasq/dnsmasq.leases
+fi
 
 # start cloud-config-server
 /go/bin/cloud-config-server -addr ":80" \
diff --git a/fabric/README_CN.md b/fabric/README_CN.md
new file mode 100644
index 0000000..5cfb742
--- /dev/null
+++ b/fabric/README_CN.md
@@ -0,0 +1,50 @@
+# 前言
+Sextant设计之初考虑的是在裸机集群中一键式的解决方案。实际使用的过程中，企业内部的集群一般都有了自己的初始化安装环境，如部署了DHCP服务器，有自己的DNS，机器也有自己的hostname，机器之间通过hostname相互也能ping同。这种情况下，同时两个DHCP服务器无疑是有冲突的，需要对Sextant做一些改动以便适应这种的环境。
+
+我们可以把Sextant PXE服务部分设置为可选项，保留资源cache服务部分。由于post_script不能通过kick start的方式启动，所以引入fabric作为集群管理者，方便安装、配置、检查、启动、关闭软件。我们写的如下的步骤，都是在考虑了企业一般的现实情况来做的。
+
+首先，`copy host.template.yaml host.yaml`，然后修改之。
+
+***注意：***
+- 符合要求的步骤可以略过
+- 需要已经安装centos7的基础操作系统
+
+# 步骤一：机器之间可以访问
+我们需要机器都可以通过hostname来相互之间访问。如果企业的网络不支持，需要我们把静态解析写入各个节点`/etc/hosts`中(已经支持的可以忽略)。
+
+```
+# get mac_ip_host
+fab -f get_mac_ip_host.py get_mac_addr
+
+# display all before set them
+fab -f set_hosts.py display
+
+# set hosts
+fab -f set_hosts.py set_mac_hosts
+```
+
+# 步骤二：生成bsroot
+注意设置cluster-desc.yaml中的`start_pxe: n`。
+
+
+# 步骤三：升级kernel
+```
+fab -f upgrade_kernel.py prepare
+fab -f upgrade_kernel.py upgrade
+fab -f upgrade_kernel.py reboot
+```
+
+# 步骤四：安装gpu driver
+```
+fab -f gpu_driver.py prepare
+fab -f gpu_driver.py install
+fab -f gpu_driver.py check
+```
+
+# 步骤五：安装k8s需要的软件
+```
+fab -f k8s.py prepare
+fab -f k8s.py install
+```
+
+# TODO: 启动etcd flannel kubelet等
\ No newline at end of file
diff --git a/fabric/get_mac_ip_host.py b/fabric/get_mac_ip_host.py
new file mode 100644
index 0000000..fd3d905
--- /dev/null
+++ b/fabric/get_mac_ip_host.py
@@ -0,0 +1,33 @@
+from __future__ import with_statement
+from fabric.api import *
+from fabric.contrib.console import confirm
+import fabric.operations as op
+import yaml
+import sys
+import re
+
+def get_mac_addr():
+    src_path = "/etc/mac_ip_host"
+
+    cmd = """ default_iface=$(awk '$2 == 00000000 { print $1  }' /proc/net/route | uniq) && 
+    default_iface=`echo ${default_iface} | awk '{ print $1 }'` &&
+    mac_addr=`ip addr show dev ${default_iface} | awk '$1 ~ /^link\// { print $2 }'` && 
+    echo $mac_addr %s $HOSTNAME  > %s
+    """ % (env.host_string, src_path)
+    run(cmd)
+
+    dst_path = env.host_string + "/mac_ip_host"
+    get(src_path, dst_path)
+
+with open("hosts.yaml", 'r') as stream:
+    try:
+        y = yaml.load(stream)
+        env.hosts = y["hosts"]
+        env.user = y["user"]
+        env.password = y["password"]
+    except yaml.YAMLError as exc:
+        print(exc)
+        abort("load yaml error")
+
+
+
diff --git a/fabric/gpu_driver.py b/fabric/gpu_driver.py
new file mode 100644
index 0000000..6539f80
--- /dev/null
+++ b/fabric/gpu_driver.py
@@ -0,0 +1,46 @@
+from __future__ import with_statement
+from fabric.api import *
+from fabric.contrib.console import confirm
+import fabric.operations as op
+import yaml
+import sys
+
+driver_version=""
+http_gpu_dir=""
+boot_strapper=""
+
+def prepare():
+    cmd = """setenforce 0 
+        && sed -i 's/^SELINUX=.*/SELINUX=disabled/g' /etc/selinux/config 
+        && cat /etc/selinux/config | grep SELINUX"""
+    run(cmd)
+
+def install():
+    # Imporant: gpu must be installed after the kernel has been installed
+    run("wget -P /root %s/build_centos_gpu_drivers.sh" % http_gpu_dir)
+    cmd = "bash -x /root/build_centos_gpu_drivers.sh %s %s" % (driver_version, http_gpu_dir)
+    run(cmd)
+
+#@parallel
+def check():
+    cmd="ret=`nvidia-smi | grep  \"Driver Version\" | grep %s` ; if [[ -z $ret  ]]; then exit 1; fi " % driver_version
+    result = run(cmd)
+    if result.failed:
+        abort(env.host_string + ": check failed")
+
+with open("hosts.yaml", 'r') as stream:
+    try:
+        y = yaml.load(stream)
+        env.hosts = y["hosts"]
+        env.user = y["user"]
+        env.password = y["password"]
+
+        boot_strapper = y["boot_strapper"]
+        driver_version = y["gpu"]["driver_version"]
+
+        http_gpu_dir="http://%s/static/CentOS7/gpu_drivers" % boot_strapper
+    except yaml.YAMLError as exc:
+        print(exc)
+        abort("load yaml error")
+
+
diff --git a/fabric/hosts.template.yaml b/fabric/hosts.template.yaml
new file mode 100644
index 0000000..27a532c
--- /dev/null
+++ b/fabric/hosts.template.yaml
@@ -0,0 +1,26 @@
+user: "root"
+password: "passwd"
+hosts:
+  - 192.168.16.23
+  - 192.168.16.24
+  - 192.168.16.25
+  - 192.168.16.26
+  - 192.168.16.27
+  - 192.168.16.28
+  - 192.168.16.29
+kernel:
+  old_version: "3.10.0-327.el7.x86_64"
+  new_version: "4.4.79-1.el7.elrepo.x86_64"
+gpu:
+  driver_verion: 375.26
+boot_strapper: "192.168.16.23"
+
+# host, mac, all
+set_type: host
+
+# change hostname to mac?
+set_mac_hostname: n
+
+# set "" if not need to change default path
+docker_data_path: "/home/var/lib/docker"
+etcd_data_path: "/home/var/lib/etcd"
diff --git a/fabric/k8s.py b/fabric/k8s.py
new file mode 100644
index 0000000..5a4424a
--- /dev/null
+++ b/fabric/k8s.py
@@ -0,0 +1,63 @@
+from __future__ import with_statement
+from fabric.api import *
+from fabric.contrib.console import confirm
+import fabric.operations as op
+import yaml
+import sys
+import re
+
+
+boot_strapper=""
+set_mac_hostname=""
+docker_data_path=""
+etcd_data_path=""
+
+def prepare():
+    run("systemctl stop firewalld && systemctl disable firewalld")
+    run("wget -O /etc/yum.repos.d/Cloud-init.repo http://%s/static/CentOS7/repo/cloud-init.repo" % boot_strapper)
+    run("wget -O /root/post-process.sh http://%s/centos/post-script/00-00-00-00-00-00" % boot_strapper)
+    run("wget -O /root http://%s/static/CentOS7/post_cloudinit_provision.sh" % boot_strapper)
+
+def install():
+    run("yum --enablerepo=Cloud-init install -y cloud-init docker-engine etcd flannel")
+    run("""cd /root 
+        && export set_mac_hostname=%s 
+        && export docker_data_path=%s 
+        && bash post-process.sh""" % (set_mac_hostname, docker_data_path))
+
+    if len(etcd_data_path) > 0 :
+        run("id -u etcd &>/dev/null || useradd etcd")
+        run("mkdir -p %s && chown etcd -R %s" % (etcd_data_path, etcd_data_path))
+
+    run(""" cd /root
+        && export bootstrapper_ip=%s 
+        && export etcd_data_path=%s 
+        && bash post_cloudinit_provision.sh""" % (boot_strapper, etcd_data_path))
+
+def rm_clouinit_cache():
+    run("rm -rf /var/lib/cloud/instances/iid-local01")
+
+def start_etcd():
+    run("""systemctl daemon-reload
+        && systemctl stop etcd
+        && systemctl enable etcd 
+        && systemctl start etcd""")
+
+with open("hosts.yaml", 'r') as stream:
+    try:
+        y = yaml.load(stream)
+        env.user = y["user"]
+        env.password = y["password"]
+        env.hosts = y["hosts"]
+        boot_strapper = y["boot_strapper"]
+
+        set_mac_hostname = y["set_mac_hostname"]
+        docker_data_path = y["docker_data_path"]
+        etcd_data_path = y["etcd_data_path"]
+    except yaml.YAMLError as exc:
+        print(exc)
+        abort("load yaml error")
+
+    
+
+
diff --git a/fabric/set_hosts.py b/fabric/set_hosts.py
new file mode 100644
index 0000000..87d7509
--- /dev/null
+++ b/fabric/set_hosts.py
@@ -0,0 +1,79 @@
+from __future__ import with_statement
+from fabric.api import *
+from fabric.contrib.console import confirm
+import fabric.operations as op
+import yaml
+import sys
+import re
+
+mac_ip={}
+host_ip={}
+set_type=""
+
+def modify_mac_hosts(path, ips):
+    import copy
+    local = copy.deepcopy(ips)
+
+    #hostname->ip
+    hosts = []
+    with open(path, "r") as fp:
+        for line in fp.read().split('\n'):
+            if len(re.sub('\s*', '', line)) and not line.startswith('#'):
+                parts = re.split('\s+', line)
+                ip = parts[0]
+                host_name = " ".join(parts[1:])
+                hosts.append([host_name, ip])
+        fp.close()
+
+    for n in hosts:
+        if n[0] in local:
+            n[1] = local[n[0]]
+            local[n[0]]= ""
+
+    with open(path, "w") as fw:
+        for n in hosts:
+            fw.write("%s %s\n" % (n[1], n[0]) )
+        for n in local:
+            if len(local[n]) > 0:
+                fw.write("%s %s\n" % (local[n], n) )
+        fw.close()
+
+def set_mac_hosts():
+    src_path = "/etc/hosts"
+    dst_path = env.host_string + "/hosts"
+    get(src_path)
+    if set_type == "mac" or set_type == "all":
+        modify_mac_hosts(dst_path, mac_ip)
+    if set_type == "host" or set_type == "all":
+        modify_mac_hosts(dst_path, host_ip)
+    put(dst_path, src_path)
+
+def display():
+    print host_ip
+    print mac_ip
+
+with open("hosts.yaml", 'r') as stream:
+    try:
+        y = yaml.load(stream)
+        env.hosts = y["hosts"]
+        env.user = y["user"]
+        env.password = y["password"]
+
+        set_type = y["set_type"]
+    except yaml.YAMLError as exc:
+        print(exc)
+        abort("load yaml error")
+
+for h in env.hosts:
+    dst_path = h + "/mac_ip_host"
+    with open(dst_path, "r") as fp:
+        for line in fp.read().split('\n'):
+            if len(re.sub('\s*', '', line)) and not line.startswith('#'):
+                parts = re.split('\s+', line)
+                mac = parts[0].replace(":", "-")
+                ip = parts[1]
+                host_name = parts[2]
+
+                mac_ip[mac] = ip
+                host_ip[host_name] = ip
+
diff --git a/fabric/upgrade_kernel.py b/fabric/upgrade_kernel.py
new file mode 100644
index 0000000..88d43a4
--- /dev/null
+++ b/fabric/upgrade_kernel.py
@@ -0,0 +1,65 @@
+from __future__ import with_statement
+from fabric.api import *
+from fabric.contrib.console import confirm
+import fabric.operations as op
+
+new_kernel_version=""
+old_kernel_version=""
+boot_strapper=""
+
+def prepare():
+    run("sed -i '/exclude=*/ s/^/#/' /etc/yum.conf")
+
+def post():
+    run("sed -i -e '/exclude=*kernel*/ s/^#//' /etc/yum.conf")
+
+@parallel
+def upgrade():
+    put("./upgrade_kernel.sh", "/tmp/upgrade_kernel.sh")
+    result = run("bash /tmp/upgrade_kernel.sh %s" % boot_strapper)
+    if result.failed:
+        abort("failed")
+    run("grub2-set-default \"CentOS Linux (%s) 7 (Core)\"" % new_kernel_version)
+
+def reset():
+    cmd = "grub2-set-default \"CentOS Linux (%s) 7 (Core)\""  % old_kernel_version
+    run(cmd)
+
+def check():
+    cmd = "if [[ ! -d /usr/src/kernels/%s ]]; then exit 1; fi" % new_kernel_version
+    result = run(cmd)
+    if result.failed:
+        abort(env.host_string + " check failed")
+
+    start = "saved_entry=CentOS Linux (%s) 7 (Core)" % new_kernel_version
+    cmd = "if [[ \"$(grub2-editenv list)\" != \"%s\" ]]; then exit 1; fi" % start
+    result = run(cmd)
+    if result.failed:
+        abort(env.host_string + " check failed")
+
+@parallel
+def reboot():
+    run("systemctl set-default multi-user.target && reboot")
+
+def display():
+    run("uname -a")
+
+import yaml
+
+with open("hosts.yaml", 'r') as stream:
+    try:
+        y = yaml.load(stream)
+        env.hosts = y["hosts"]
+        env.user = y["user"]
+        env.password = y["password"]
+
+        new_kernel_version=y["kernel"]["new_version"]
+        old_kernel_version=y["kernel"]["old_version"]
+        boot_strapper = y["boot_strapper"]
+
+        #print new_kernel_version, old_kernel_version
+        print "grub2-set-default \"CentOS Linux (%s) 7 (Core)\"" % new_kernel_version
+    except yaml.YAMLError as exc:
+        print(exc)
+        abort("load yaml error")
+
diff --git a/fabric/upgrade_kernel.sh b/fabric/upgrade_kernel.sh
new file mode 100755
index 0000000..b610e95
--- /dev/null
+++ b/fabric/upgrade_kernel.sh
@@ -0,0 +1,16 @@
+#!/bin/bash
+#export https_proxy=192.168.16.30:3128
+#export http_proxy=192.168.16.30:3128
+
+if [[ $# > 0 ]]; then
+    wget -O /etc/yum.repos.d/Cloud-init.repo http://$1/static/CentOS7/repo/cloud-init.repo
+    yum --enablerepo=Cloud-init -y -d1 install kernel-lt kernel-lt-devel 
+else
+    rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
+    rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-2.el7.elrepo.noarch.rpm
+    yum --enablerepo=elrepo-kernel -y -d1 install kernel-lt kernel-lt-devel 
+fi
+
+if [[ ! -f /boot/grub2/grub.cfg ]]; then
+    grub2-mkconfig --output=/boot/grub2/grub.cfg
+fi
diff --git a/golang/cloud-config-server/server_test.go b/golang/cloud-config-server/server_test.go
index 1668f14..7965269 100644
--- a/golang/cloud-config-server/server_test.go
+++ b/golang/cloud-config-server/server_test.go
@@ -1,6 +1,7 @@
 package main
 
 import (
+	"fmt"
 	"io"
 	"io/ioutil"
 	"log"
@@ -19,7 +20,6 @@ import (
 )
 
 const (
-	tmplFile               = "src/github.com/k8sp/sextant/golang/template/cloud-config.template"
 	templateDir            = "../template/templatefiles"
 	clusterDescExampleFile = "../template/cluster-desc.sample.yaml"
 	loadTimeout            = 15 * time.Second
@@ -62,6 +62,8 @@ func TestCloudConfigHandler(t *testing.T) {
 			status, http.StatusOK)
 	}
 
+	fmt.Println(rr.Body.String())
+
 	if rr.Body.String() != "" {
 		// Compare only a small fraction -- the etcd2 initial cluster -- for testing.
 		yml := make(map[interface{}]interface{})
diff --git a/golang/clusterdesc/config.go b/golang/clusterdesc/config.go
index 00ca792..83731e8 100644
--- a/golang/clusterdesc/config.go
+++ b/golang/clusterdesc/config.go
@@ -4,9 +4,10 @@
 package clusterdesc
 
 import (
-	"github.com/topicai/candy"
 	"net"
 	"strings"
+
+	"github.com/topicai/candy"
 )
 
 // Cluster configures a cluster, which includes: (1) a
@@ -56,6 +57,7 @@ type Cluster struct {
 	DNSMASQSetNTP            bool     `yaml:"set_ntp"`
 	DNSMASQLease             string   `yaml:"lease"`
 	CentOSYumRepo            string   `yaml:"set_yum_repo"`
+	StartPXE                 bool     `yaml:"start_pxe"`
 }
 
 // CoreOS defines the system related operations, such as: system updates.
@@ -80,6 +82,7 @@ type Ceph struct {
 // Cluster.IPLow and Cluster.IPHigh.
 type Node struct {
 	MAC          string
+	CurHostName  string `yaml:"cur_host_name"`
 	IngressLabel bool
 	CephMonitor  bool   `yaml:"ceph_monitor"`
 	KubeMaster   bool   `yaml:"kube_master"`
@@ -107,6 +110,9 @@ func (c Cluster) GetIngressReplicas() int {
 // Hostname is defined as a method of Node, so can be call in
 // template.  For more details, refer to const tmplDHCPConf.
 func (n Node) Hostname() string {
+	if n.CurHostName != "" {
+		return n.CurHostName
+	}
 	return strings.ToLower(strings.Replace(n.Mac(), ":", "-", -1))
 }
 
diff --git a/golang/template/cluster-desc.sample.yaml b/golang/template/cluster-desc.sample.yaml
index 8f7fadb..cb4fe58 100644
--- a/golang/template/cluster-desc.sample.yaml
+++ b/golang/template/cluster-desc.sample.yaml
@@ -1,3 +1,9 @@
+# NOTICE:
+# 1. If you change version of them such as kube,centos, it's better to 
+#    delete the bsroot directory because it does't update a exist file.
+#    or do what you know.
+# 2. Please check that $mirror_site/$centos_version/(isos|os) exist
+
 bootstrapper: 10.10.14.253
 subnet: 10.10.14.0
 netmask: 255.255.255.0
@@ -12,6 +18,9 @@ dockerdomain: "bootstrapper"
 k8s_service_cluster_ip_range: 10.100.0.0/24
 k8s_cluster_dns: 10.100.0.10
 
+#start pxe?
+start_pxe: n
+
 # Flannel backend only support "host-gw", "vxlan" and "udp" for now.
 flannel_backend: "host-gw"
 
@@ -22,12 +31,16 @@ coreos_channel: "stable"
 coreos_version: "1122.2.0"
 
 # centos version
-download_kernel: n
-centos_version: "7.3.1611"
+download_kernel: y
+# configure mirror_site, sunch as:
+#   http://mirrors.163.com/centos
+mirror_site: http://archive.kernel.org/centos-vault
+# Configure the centos version for isos and rpms
+centos_version: "7.2.1511"
 
 # gpu drivers version
-set_gpu: n
-gpu_drivers_version: "375.20"
+set_gpu: y
+gpu_drivers_version: "375.26"
 
 ingress_hostnetwork: true
 
@@ -64,44 +77,52 @@ ceph:
   osd_journal_size: 5000
 
 images:
-  hyperkube: "pineking/hyperkube-amd64:2169be"
-  pause: "typhoon1986/pause-amd64:3.0"
-  flannel: "typhoon1986/flannel:0.5.5"
-  ingress: "yancey1989/nginx-ingress-controller:0.8.3"
-  kubednsmasq: "pineking/kube-dnsmasq-amd64:1.4"
-  healthz: "pineking/exechealthz-amd64:1.2"
-  addon_manager: "pineking/kube-addon-manager-amd64:v6.4-alpha.3"
-  kubedns: "pineking/kubedns-amd64:1.9"
+  hyperkube: "gcr.io/google_containers/hyperkube-amd64:v1.6.2"
+  pause: "gcr.io/google_containers/pause-amd64:3.0"
+  flannel: "quay.io/coreos/flannel:v0.7.1-amd64"
+  ingress: "gcr.io/google_containers/nginx-ingress-controller:0.9.0-beta.3"
+  default_backend: "gcr.io/google_containers/defaultbackend:1.0"
+  kubedns: "gcr.io/google_containers/kubedns-amd64:1.9"
+  kubednsmasq: "gcr.io/google_containers/kube-dnsmasq-amd64:1.4"
+  healthz: "gcr.io/google_containers/exechealthz-amd64:1.2"
+  addon_manager: "gcr.io/google_containers/kube-addon-manager-amd64:v6.4-beta.1"
   ceph: "typhoon1986/ceph-daemon:tag-build-master-jewel-ubuntu-14.04-fix370"
-  default_backend: "yancey1989/defaultbackend:1.0"
   ntp: "redaphid/docker-ntp-server"
   heapster: "kubernetes/heapster:canary"
   grafana: "lupan/heapster_grafana:v2.6.0-2"
   influxdb: "lupan/heapster_influxdb:v0.5"
-  dashboard: "pineking/kubernetes-dashboard-amd64:v1.6.0"
+  dashboard: "gcr.io/google_containers/kubernetes-dashboard-amd64:v1.6.0"
+
 
+# if you wan't use mac as hostname, please delete cur_host_name or 
+# set them to ""
 nodes:
   - mac: "00:25:90:c0:f7:80"
+    cur_host_name: "node1"
     ceph_monitor: n
     kube_master: y
     etcd_member: y
     ingress_label: n
   - mac: "0c:c4:7a:82:c5:bc"
+    cur_host_name: "node2"
     ceph_monitor: n
     kube_master: n
     etcd_member: y
     ingress_label: n
   - mac: "0c:c4:7a:82:c5:b8"
+    cur_host_name: "node3"
     ceph_monitor: n
     kube_master: n
     etcd_member: y
     ingress_label: y
   - mac: "00:25:90:c0:f6:ee"
+    cur_host_name: "node4"
     ceph_monitor: n
     kube_master: n
     etcd_member: n
     ingress_label: n
   - mac: "00:25:90:c0:f6:d6"
+    cur_host_name: "node5"
     ceph_monitor: n
     kube_master: n
     etcd_member: n
diff --git a/golang/template/template.go b/golang/template/template.go
index 21a6f3d..cbd4014 100644
--- a/golang/template/template.go
+++ b/golang/template/template.go
@@ -43,6 +43,7 @@ type ExecutionConfig struct {
 	CoreOSVersion            string
 	GPUDriversVersion        string
 	OSName                   string
+	StartPXE                 bool
 }
 
 // Execute load template files from "ccTemplateDir", parse clusterDescFile to
@@ -106,6 +107,7 @@ func GetConfigDataByMac(mac string, clusterdesc *clusterdesc.Cluster, caKey, caC
 		CoreOSVersion:     clusterdesc.CoreOSVersion,
 		GPUDriversVersion: clusterdesc.GPUDriversVersion,
 		OSName:            clusterdesc.OSName,
+		StartPXE:          clusterdesc.StartPXE,
 	}
 }
 
diff --git a/golang/template/templatefiles/cc-centos-post.template b/golang/template/templatefiles/cc-centos-post.template
index e065d94..cba4b1b 100644
--- a/golang/template/templatefiles/cc-centos-post.template
+++ b/golang/template/templatefiles/cc-centos-post.template
@@ -24,6 +24,11 @@ set_docker() {
     # set iptables to false for docker version >=1.13, to solve the iptables FORWARD drop
     sed -i -e '/^ExecStart=/ s/$/ --iptables=false/' /usr/lib/systemd/system/docker.service
 
+    # set path
+    if [[ ! -z "${docker_data_path}" ]]; then
+    	sed -i -e "/^ExecStart=/ s@\$@  -g ${docker_data_path} @" /usr/lib/systemd/system/docker.service
+    fi
+
     # Explicit Docker option
     sed -i -e '/^ExecStart=/ s/$/ $DOCKER_OPT_BIP $DOCKER_OPT_IPMASQ $DOCKER_OPT_MTU $DOCKER_NETWORK_OPTIONS/' /usr/lib/systemd/system/docker.service
 }
@@ -63,12 +68,15 @@ else
 
 fi
 
-yum clean all
-yum makecache
+#yum clean all
+#yum makecache
 
 }
 
-set_hostname
+if [[ "${set_mac_hostname}" != " n" ]]; then
+    set_hostname
+fi
+
 set_docker
 set_ssh_config
 set_yum_repo
diff --git a/golang/template/templatefiles/cc-centos.template b/golang/template/templatefiles/cc-centos.template
index e66c92a..afdb02b 100644
--- a/golang/template/templatefiles/cc-centos.template
+++ b/golang/template/templatefiles/cc-centos.template
@@ -190,6 +190,7 @@
       --hostname-override={{ .MasterHostname }} \
       --cluster-dns={{ .K8sClusterDNS }} \
       --cluster-domain=cluster.local \
+      --cgroup-driver=systemd \
       --feature-gates=Accelerators=true 
       Restart=always
       RestartSec=10
diff --git a/golang/template/templatefiles/cc-common.template b/golang/template/templatefiles/cc-common.template
index 9614c4a..b898eca 100644
--- a/golang/template/templatefiles/cc-common.template
+++ b/golang/template/templatefiles/cc-common.template
@@ -11,11 +11,13 @@
     permissions: 0600
     content: |
       {{ .CaCrt }}
+  {{- if .StartPXE }}
   - path: /etc/hosts
     owner: root
     content: |
       127.0.0.1 localhost
       {{ .BootstrapperIP }} {{ .Dockerdomain }}
+  {{- end}}
   {{/* ********************************************************* */}}
   {{- if .KubeMaster }}
   - path: /etc/kubernetes/ssl/apiserver.pem
diff --git a/scripts/centos.sh b/scripts/centos.sh
index f2e425d..13f81d5 100644
--- a/scripts/centos.sh
+++ b/scripts/centos.sh
@@ -4,36 +4,37 @@ GPU_DIR='gpu_drivers'
 ABSOLUTE_GPU_DIR="$BSROOT/html/static/CentOS7/$GPU_DIR"
 HTTP_GPU_DIR="http://$BS_IP/static/CentOS7/$GPU_DIR"
 
-
 download_centos_images() {
     VERSION=CentOS7
     mkdir -p $BSROOT/tftpboot
-    printf "Downloading syslinux ... "
-    wget --quiet -c -N -P $BSROOT/tftpboot https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-6.03.tar.gz || { echo "Failed"; exit 1; }
+    log info "Downloading syslinux ..."
+    wget --quiet -c -N -P $BSROOT/tftpboot https://www.kernel.org/pub/linux/utils/boot/syslinux/syslinux-6.03.tar.gz || { log fatal "Failed"; exit 1; }
     cd $BSROOT/tftpboot
-    tar xzf syslinux-6.03.tar.gz || { echo "Failed"; exit 1; }
-    cp syslinux-6.03/bios/core/pxelinux.0 $BSROOT/tftpboot || { echo "Failed"; exit 1; }
-    cp syslinux-6.03/bios/com32/menu/vesamenu.c32 $BSROOT/tftpboot || { echo "Failed"; exit 1; }
-    cp syslinux-6.03/bios/com32/elflink/ldlinux/ldlinux.c32 $BSROOT/tftpboot || { echo "Failed"; exit 1; }
-    rm -rf syslinux-6.03 || { echo "Failed"; exit 1; } # Clean the untarred.
-    echo "Done"
-
-    printf "Downloading CentOS 7 PXE vmlinuz image ... "
+    tar xzf syslinux-6.03.tar.gz || { log fatal "Failed"; exit 1; }
+    cp syslinux-6.03/bios/core/pxelinux.0 $BSROOT/tftpboot || { log fatal "Failed"; exit 1; }
+    cp syslinux-6.03/bios/com32/menu/vesamenu.c32 $BSROOT/tftpboot || { log fatal "Failed"; exit 1; }
+    cp syslinux-6.03/bios/com32/elflink/ldlinux/ldlinux.c32 $BSROOT/tftpboot || { log fatal "Failed"; exit 1; }
+    rm -rf syslinux-6.03 || { log fatal "Failed"; exit 1; } # Clean the untarred.
+    log info "Done"
+
+    log info "Downloading CentOS 7 PXE vmlinuz image ..."
     cd $BSROOT/tftpboot
     mkdir -p $BSROOT/tftpboot/CentOS7
-    wget --quiet -c -N -P $BSROOT/tftpboot/CentOS7 http://mirrors.163.com/centos/$cluster_desc_centos_version/os/x86_64/images/pxeboot/initrd.img  || { echo "Failed"; exit 1; }
-    wget --quiet -c -N -P $BSROOT/tftpboot/CentOS7 http://mirrors.163.com/centos/$cluster_desc_centos_version/os/x86_64/images/pxeboot/vmlinuz  || { echo "Failed"; exit 1; }
-    echo "Done"
+    wget --quiet -c -N -P $BSROOT/tftpboot/CentOS7 $cluster_desc_mirror_site/$cluster_desc_centos_version/os/x86_64/images/pxeboot/initrd.img  || { log fatal "Failed"; exit 1; }
+    wget --quiet -c -N -P $BSROOT/tftpboot/CentOS7 $cluster_desc_mirror_site/$cluster_desc_centos_version/os/x86_64/images/pxeboot/vmlinuz  || { log fatal "Failed"; exit 1; }
+    log info "Done"
 
-    printf "Downloading CentOS 7 ISO ... "
+    log info "Downloading CentOS 7 ISO ..."
     mkdir -p $BSROOT/html/static/CentOS7
-    wget --quiet -c -N -P $BSROOT/html/static/CentOS7 http://mirrors.163.com/centos/$cluster_desc_centos_version/isos/x86_64/CentOS-7-x86_64-Everything-1611.iso || { echo "Failed"; exit 1; }
-    echo "Done"
+    centos7_src=$cluster_desc_mirror_site/$cluster_desc_centos_version/isos/x86_64/CentOS-7-x86_64-Everything-${cluster_desc_centos_version##*.}.iso
+    echo $centos7_src
+    wget --quiet -c -N -P $BSROOT/html/static/CentOS7  ${centos7_src} || { log fatal "Failed"; exit 1; }
+    log info "Done"
 }
 
 
 generate_pxe_centos_config() {
-    printf "Generating pxelinux.cfg ... "
+    log info "Generating pxelinux.cfg ..."
     mkdir -p $BSROOT/tftpboot/pxelinux.cfg
     cat > $BSROOT/tftpboot/pxelinux.cfg/default <<EOF
 default CentOS7
@@ -43,12 +44,12 @@ label CentOS7
   kernel CentOS7/vmlinuz
   append initrd=CentOS7/initrd.img ks=http://$BS_IP/static/CentOS7/ks.cfg
 EOF
-    echo "Done"
+    log info "Done"
 }
 
 
 generate_kickstart_config() {
-    printf "Generating kickstart config ... "
+    log info "Generating kickstart config ..."
     mkdir -p $BSROOT/html/static/CentOS7
     cat > $BSROOT/html/static/CentOS7/ks.cfg <<EOF
 #platform=x86, AMD64, or Intel EM64T
@@ -128,17 +129,19 @@ bash -x /root/post_cloudinit_provision.sh >> /root/cloudinit.log
 %end
 
 EOF
-    echo "Done"
+    log info "Done"
 }
 
 
 generate_post_cloudinit_script() {
-    printf "Generating post cloudinit script ... "
+    log info "Generating post cloudinit script ..."
     mkdir -p $BSROOT/html/static/CentOS7
     cat > $BSROOT/html/static/CentOS7/post_cloudinit_provision.sh <<'EOF'
 #!/bin/bash
 default_iface=$(awk '$2 == 00000000 { print $1  }' /proc/net/route | uniq)
-bootstrapper_ip=$(grep nameserver /etc/resolv.conf|cut -d " " -f2)
+if [[ -z ${bootstrapper_ip} ]]; then
+    bootstrapper_ip=$(grep nameserver /etc/resolv.conf|cut -d " " -f2)
+fi
 printf "Default interface: ${default_iface}\n"
 default_iface=`echo ${default_iface} | awk '{ print $1 }'`
 
@@ -155,6 +158,11 @@ cd /var/lib/cloud/seed/nocloud-net/
 
 wget -O user-data http://$bootstrapper_ip/cloud-config/${mac_addr}
 
+if [[ ! -z ${etcd_data_path} ]]; then
+    sed -i "s@Environment=ETCD_DATA_DIR=.*@Environment=ETCD_DATA_DIR=${etcd_data_path}@" \
+    /var/lib/cloud/seed/nocloud-net/user-data
+fi
+
 cat > /var/lib/cloud/seed/nocloud-net/meta-data << eof
 instance-id: iid-local01
 eof
@@ -166,13 +174,12 @@ systemctl stop  NetworkManager
 systemctl disable  NetworkManager
 systemctl enable docker
 EOF
-    echo "Done"
-
+    log info "Done"
 }
 
 
 generate_rpmrepo_config() {
-  printf "Generating rpm repo configuration files ..."
+  log info "Generating rpm repo configuration files ..."
   mkdir -p $BSROOT/html/static/CentOS7/repo
 
    cat > $BSROOT/html/static/CentOS7/repo/cloud-init.repo <<EOF
@@ -182,7 +189,7 @@ baseurl=http://$BS_IP/static/CentOS7/repo/cloudinit/
 enabled=1
 gpgcheck=0
 EOF
-  printf "Generating docker repo configuration file....."
+  log info "Generating docker repo configuration file....."
   tee $BSROOT/docker.repo <<-'EOF'
 [dockerrepo]
 name=Docker Repository
@@ -199,10 +206,13 @@ EOF
   fi 
 
   # download kernel if the kernel-lt and kernel_lt_devel does not in dir 
+  set +e
   KERNEL_LT=$(ls ${BSROOT}/html/static/CentOS7/repo/cloudinit/kernel-lt-*)
   if [[ -n ${KERNEL_LT} ]]; then
-      REPO_IMAGES=${REPO_IMAGES} + 'kernel-lt kernel-devel'
+      REPO_IMAGES=${REPO_IMAGES}' kernel-lt kernel-devel'
+      echo ${REPO_IMAGES}
   fi
+  set -e
 
   docker run --rm -it \
              --volume $BSROOT:/bsroot \
@@ -215,15 +225,14 @@ EOF
              /usr/bin/yumdownloader  --enablerepo=elrepo-kernel --resolve \
              --destdir=/bsroot/html/static/CentOS7/repo/cloudinit ${REPO_IMAGES} && \
              /usr/bin/createrepo -v  /bsroot/html/static/CentOS7/repo/cloudinit/" || \
-             { echo 'Failed to generate  cloud-init repo !' ; exit 1; }
+             { log fatal 'Failed to generate  cloud-init repo !' ; exit 1; }
 
-  echo "Done"
+  log info "Done"
 }
 
 
 download_centos_gpu_drivers() {
-
-  printf "Downloading CentOS GPU drivers ...\n"
+  log info "Downloading CentOS GPU drivers ..."
   mkdir -p $ABSOLUTE_GPU_DIR
   cp $SEXTANT_DIR/scripts/centos/gpu/nvidia-gpu-mkdev.sh $ABSOLUTE_GPU_DIR
   cp $SEXTANT_DIR/scripts/centos/gpu/build_centos_gpu_drivers.sh $ABSOLUTE_GPU_DIR
@@ -236,7 +245,7 @@ download_centos_gpu_drivers() {
   mkdir -p ${DRIVER_DOWNLOAD_TO}
   wget --quiet -c -N -P ${DRIVER_DOWNLOAD_TO} \
     ${DRIVER_DOWNLOAD_FROM}/${DRIVER_VERSION}/${DRIVER_ARCHIVE} \
-    || { echo "Failed"; exit 1; }
-  echo "Done"
+    || { log fatal "failed"; }
+  log info "Done"
 }
 
diff --git a/scripts/common.sh b/scripts/common.sh
index 38acb21..ef875b2 100644
--- a/scripts/common.sh
+++ b/scripts/common.sh
@@ -59,7 +59,7 @@ cp $CLUSTER_DESC $BSROOT/config/cluster-desc.yml
 
 # check_prerequisites checks for required software packages.
 function check_prerequisites() {
-    printf "Checking prerequisites ... "
+    log info "Checking prerequisites ... "
     local err=0
     for tool in wget tar gpg docker tr go make; do
         command -v $tool >/dev/null 2>&1 || { echo "Install $tool before run this script"; err=1; }
@@ -67,12 +67,12 @@ function check_prerequisites() {
     if [[ $err -ne 0 ]]; then
         exit 1
     fi
-    echo "Done"
+    log info "Done"
 }
 
 
 check_cluster_desc_file() {
-    printf "Cross-compiling validate-yaml ... "
+    log info "Cross-compiling validate-yaml ... "
     docker run --rm -it \
           --volume $GOPATH:/go \
           -e CGO_ENABLED=0 \
@@ -80,17 +80,17 @@ check_cluster_desc_file() {
           -e GOARCH=amd64 \
           golang:wheezy \
           go get github.com/k8sp/sextant/golang/validate-yaml \
-          || { echo "Build sextant failed..."; exit 1; }
-    echo "Done"
+          || { log fatal "Build sextant failed..."; exit 1; }
+    log info "Done"
 
 
-    printf "Copying cloud-config template and cluster-desc.yml ... "
+    log info "Copying cloud-config template and cluster-desc.yml ... "
     mkdir -p $BSROOT/config > /dev/null 2>&1
     cp -r $SEXTANT_DIR/golang/template/templatefiles $BSROOT/config
     cp $CLUSTER_DESC $BSROOT/config
-    echo "Done"
+    log info "Done"
 
-    printf "Checking cluster description file ..."
+    log info "Checking cluster description file ..."
     docker run --rm -it \
         --volume $GOPATH:/go \
         --volume $BSROOT:/bsroot \
@@ -99,11 +99,11 @@ check_cluster_desc_file() {
           --cloud-config-dir /bsroot/config/templatefiles \
           -cluster-desc /bsroot/config/cluster-desc.yml \
           > /dev/null 2>&1 || { echo "Failed"; exit 1; }
-    echo "Done"
+    log info "Done"
 }
 
 generate_registry_config() {
-    printf "Generating Docker registry config file ... "
+    log info "Generating Docker registry config file ... "
     mkdir -p $BSROOT/registry_data
     [ ! -d $BSROOT/config ] && mkdir -p $BSROOT/config
     cat > $BSROOT/config/registry.yml <<EOF
@@ -129,42 +129,31 @@ health:
     interval: 10s
     threshold: 3
 EOF
-    echo "Done"
+    log info "Done"
 }
 
 generate_ceph_install_scripts() {
-  printf "Generating Ceph installation scripts..."
+  log info "Generating Ceph installation scripts..."
   mkdir -p $BSROOT/html/static/ceph
   # update install-mon.sh and set OSD_JOURNAL_SIZE
   OSD_JOURNAL_SIZE=$cluster_desc_ceph_osd_journal_size
   # update ceph install scripts to use image configured in cluster-desc.yml
   CEPH_DAEMON_IMAGE=$(echo $cluster_desc_images_ceph | sed -e 's/[\/&]/\\&/g')
-  printf "$CEPH_DAEMON_IMAGE..."
+  log info "$CEPH_DAEMON_IMAGE..."
   sed "s/ceph\/daemon/$CEPH_DAEMON_IMAGE/g" $INSTALL_CEPH_SCRIPT_DIR/install-mon.sh | \
       sed "s/<JOURNAL_SIZE>/$OSD_JOURNAL_SIZE/g" \
       > $BSROOT/html/static/ceph/install-mon.sh || { echo "install-mon Failed"; exit 1; }
 
   sed "s/ceph\/daemon/$CEPH_DAEMON_IMAGE/g" $INSTALL_CEPH_SCRIPT_DIR/install-osd.sh \
       > $BSROOT/html/static/ceph/install-osd.sh || { echo "install-osd Failed"; exit 1; }
-  echo "Done"
+  log info "Done"
 
 }
 
 
 build_bootstrapper_image() {
     # cloud-config-server and addon compile moved to check_cluster_desc_file
-    # Compile registry and build docker image here
-    printf "Cross-compiling Docker registry ... "
-    docker run --rm -it --name=registry_build \
-          --volume $GOPATH:/go \
-          -e CGO_ENABLED=0 \
-          -e GOOS=linux \
-          -e GOARCH=amd64 \
-          golang:wheezy \
-          sh -c "go get -u -d github.com/docker/distribution/cmd/registry && cd /go/src/github.com/docker/distribution && make PREFIX=/go clean /go/bin/registry >/dev/null" \
-          || { echo "Complie Docker registry failed..."; exit 1; }
-
-    printf "Cross-compiling cloud-config-server, addons ... "
+    log info "Cross-compiling cloud-config-server, addons ... "
     docker run --rm -it \
           --volume $GOPATH:/go \
           -e CGO_ENABLED=0 \
@@ -172,49 +161,49 @@ build_bootstrapper_image() {
           -e GOARCH=amd64 \
           golang:wheezy \
           go get github.com/k8sp/sextant/golang/cloud-config-server github.com/k8sp/sextant/golang/addons \
-          || { echo "Build sextant failed..."; exit 1; }
-    echo "Done"
+          || { log fatal "Build sextant failed..."; exit 1; }
+    log info "Done"
 
 
-    rm -rf $SEXTANT_DIR/docker/{cloud-config-server,addons,registry}
-    cp $GOPATH/bin/{cloud-config-server,addons,registry} $SEXTANT_DIR/docker
-    echo "Done"
+    rm -rf $SEXTANT_DIR/docker/{cloud-config-server,addons}
+    cp $GOPATH/bin/{cloud-config-server,addons} $SEXTANT_DIR/docker
+    log info "Done"
 
-    printf "Building bootstrapper image ... "
+    log info "Building bootstrapper image ... "
     docker rm -f bootstrapper > /dev/null 2>&1 || echo "No such container: bootstrapper ,Pass..."
     docker rmi bootstrapper:latest > /dev/null 2>&1 || echo "No such images: bootstrapper ,Pass..."
     cd $SEXTANT_DIR/docker
     docker build -t bootstrapper .
     docker save bootstrapper:latest > $BSROOT/bootstrapper.tar || { echo "Failed"; exit 1; }
-    echo "Done"
+    log info "Done"
 
-    printf "Copying bash scripts ... "
+    log info "Copying bash scripts ... "
     cp $SEXTANT_DIR/start_bootstrapper_container.sh $BSROOT/
     chmod +x $BSROOT/start_bootstrapper_container.sh
     cp $SEXTANT_DIR/scripts/load_yaml.sh $BSROOT/
-    echo "Done"
+    log info "Done"
 
-    printf "Make directory ... "
+    log info "Make directory ..."
     mkdir -p $BSROOT/dnsmasq
-    echo "Done"
+    log info "Done"
 }
 
 
 download_k8s_images() {
     # Fetch release binary tarball from github accroding to the versions
     # defined in "cluster-desc.yml"
-    # hyperkube_version=`grep "hyperkube:" $CLUSTER_DESC | grep -o '".*hyperkube.*:.*"' | sed 's/".*://; s/"//'`
-    # printf "Downloading kubelet ${hyperkube_version} ... "
-    # wget --quiet -c -N -O $BSROOT/html/static/kubelet https://storage.googleapis.com/kubernetes-release/release/$hyperkube_version/bin/linux/amd64/kubelet
-    printf "Downloading kubelet ... "
-    wget --quiet -c -N -O $BSROOT/html/static/kubelet https://dl.dropboxusercontent.com/u/27178121/kubelet.v1.6.0/kubelet
-    echo "Done"
+    hyperkube_version=`grep "hyperkube:" $CLUSTER_DESC | grep -o '".*hyperkube.*:.*"' | sed 's/".*://; s/"//'`
+    log info "Downloading kubelet ${hyperkube_version} ... "
+    src="https://storage.googleapis.com/kubernetes-release/release/${hyperkube_version}/bin/linux/amd64/kubelet"
+    log debug $src
+    wget --quiet -c -N -O $BSROOT/html/static/kubelet $src || { log fatal "Failed"; exit 1; }
+    log info "Done"
     
     # setup-network-environment will fetch the default system IP infomation
     # when using cloud-config file to initiate a kubernetes cluster node
-    printf "Downloading setup-network-environment file ... "
+    log info "Downloading setup-network-environment file ... "
     wget --quiet -c -N -O $BSROOT/html/static/setup-network-environment-1.0.1 https://github.com/kelseyhightower/setup-network-environment/releases/download/1.0.1/setup-network-environment || { echo "Failed"; exit 1; }
-    echo "Done"
+    log info "Done"
 
 
     for DOCKER_IMAGE in $(set | grep '^cluster_desc_images_' | grep -o '".*"' | sed 's/"//g'); do
@@ -225,15 +214,15 @@ download_k8s_images() {
         local DOCKER_TAR_FILE=$BSROOT/`echo $DOCKER_IMAGE.tar | sed "s/:/_/g" |awk -F'/' '{print $NF}'`
         if [[ ! -f $DOCKER_TAR_FILE ]]; then
             if ! docker images --format '{{.Repository}}:{{.Tag}}' | grep $DOCKER_DOMAIN_IMAGE_URL > /dev/null; then
-                printf "Pulling image ${DOCKER_IMAGE} ... "
+                log info "Pulling image ${DOCKER_IMAGE} ... "
                 docker pull $DOCKER_IMAGE > /dev/null 2>&1
-                echo "Done"
+                docker tag $DOCKER_IMAGE $DOCKER_DOMAIN_IMAGE_URL
+                log info "Done"
             fi
-            printf "Exporting $DOCKER_TAR_FILE ... "
-            docker tag $DOCKER_IMAGE $DOCKER_DOMAIN_IMAGE_URL
+            log info "Exporting $DOCKER_TAR_FILE ... "
             docker save $DOCKER_DOMAIN_IMAGE_URL > $DOCKER_TAR_FILE.progress
             mv $DOCKER_TAR_FILE.progress $DOCKER_TAR_FILE
-            echo "Done"
+            log info "Done"
         else 
             echo "Use existing $DOCKER_TAR_FILE"
         fi
@@ -252,35 +241,36 @@ generate_tls_assets() {
 
     else
 
-        printf "Generating CA TLS assets ... "
+        log info "Generating CA TLS assets ... "
         openssl genrsa -out ca-key.pem 2048 > /dev/null 2>&1
         openssl req -x509 -new -nodes -key ca-key.pem -days 3650 -out ca.pem -subj "/CN=kube-ca"  > /dev/null 2>&1
-        echo "Done"
+        log info "Done"
 
-        printf "Generating bootstrapper TLS assets ... "
+        log info "Generating bootstrapper TLS assets ... "
         openssl genrsa -out bootstrapper.key 2048 > /dev/null 2>&1
         openssl req -new -key bootstrapper.key -out bootstrapper.csr -subj "/CN=bootstrapper" > /dev/null 2>&1
         openssl x509 -req -in bootstrapper.csr -CA ca.pem -CAkey ca-key.pem -CAcreateserial -out bootstrapper.crt -days 3650 > /dev/null 2>&1
-        echo "Done"
+        log info "Done"
 
     fi
 }
 
 prepare_setup_kubectl() {
-    printf "Downloading kubectl ... "
-    wget --quiet -c -N -O $BSROOT/html/static/kubectl https://dl.dropboxusercontent.com/u/27178121/kubelet.v1.6.0/kubectl || { echo "Failed"; exit 1; }
-    echo "Done"
+    hyperkube_version=`grep "hyperkube:" $CLUSTER_DESC | grep -o '".*hyperkube.*:.*"' | sed 's/".*://; s/"//'`
+    log info "Downloading kubectl ${hyperkube_version} ... "
+    wget --quiet -c -N -O $BSROOT/html/static/kubectl https://storage.googleapis.com/kubernetes-release/release/$hyperkube_version/bin/linux/amd64/kubectl || { echo "Failed"; exit 1; }
+    log info "Done"
 
-    printf "Preparing setup kubectl ... "
+    log info "Preparing setup kubectl ... "
     sed -i -e "s/<KUBE_MASTER_HOSTNAME>/$KUBE_MASTER_HOSTNAME/g" $SEXTANT_DIR/setup-kubectl.bash
     sed -i -e "s/<BS_IP>/$BS_IP/g" $SEXTANT_DIR/setup-kubectl.bash
     cp $SEXTANT_DIR/setup-kubectl.bash $BSROOT/setup_kubectl.bash
     chmod +x $BSROOT/setup_kubectl.bash
-    echo "Done"
+    log info "Done"
 }
 
 generate_addons_config() {
-    printf "Generating configuration files ..."
+    log info "Generating configuration files ..."
     mkdir -p $BSROOT/html/static/addons-config/
 
     docker run --rm -it \
@@ -297,6 +287,6 @@ generate_addons_config() {
         cp $SEXTANT_DIR/golang/addons/template/$file $BSROOT/html/static/addons-config/$file;
     done
 
-    echo "Done"
+    log info "Done"
 }
 
diff --git a/scripts/log.sh b/scripts/log.sh
new file mode 100644
index 0000000..72d1f15
--- /dev/null
+++ b/scripts/log.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+loglevel=0 #debug:0; info:1; warn:2; error:3; fatal:4
+function log {
+        local msg;local logtype
+        logtype=$1
+        msg=$2
+        datetime=`date +'%F %H:%M:%S'`
+        logformat="[${logtype}]${datetime} ${FUNCNAME[@]/log/}  [line:`caller 0 | awk '{print$1}'`]\t${msg}"
+        {
+        case $logtype in
+                debug)
+                        [[ $loglevel -le 0 ]] && echo -e "\033[30m${logformat}\033[0m" ;;
+                info)
+                        [[ $loglevel -le 1 ]] && echo -e "\033[32m${logformat}\033[0m" ;;
+                warn)
+                        [[ $loglevel -le 2 ]] && echo -e "\033[33m${logformat}\033[0m" ;;
+                error)
+                        [[ $loglevel -le 3 ]] && echo -e "\033[31m${logformat}\033[0m" ;;
+                fatal)
+                        [[ $loglevel -le 4 ]] && echo -e "\033[31m${logformat}\033[0m" && exit 1; ;;
+
+        esac
+        } 
+}
+
diff --git a/start_bootstrapper_container.sh b/start_bootstrapper_container.sh
index 7b1cf4a..bdae466 100755
--- a/start_bootstrapper_container.sh
+++ b/start_bootstrapper_container.sh
@@ -21,12 +21,15 @@ if [[ $BSROOT != /* ]]; then
   exit 1
 fi
 
-if [[ -e "$BSROOT/html/static/CentOS7/CentOS-7-x86_64-Everything-1611.iso" ]]; then
+source $BSROOT/load_yaml.sh
+load_yaml $BSROOT/config/cluster-desc.yml cluster_desc_
+
+if [[ -e "$BSROOT/html/static/CentOS7/CentOS-7-x86_64-Everything-${cluster_desc_centos_version##*.}.iso" ]]; then
     if [[ ! -d "$BSROOT/html/static/CentOS7/dvd_content" ]]; then
         mkdir -p $BSROOT/html/static/CentOS7/dvd_content
     fi
     if [[ ! -f "$BSROOT/html/static/CentOS7/dvd_content/.treeinfo" ]]; then
-        sudo mount -t iso9660 -o loop $BSROOT/html/static/CentOS7/CentOS-7-x86_64-Everything-1611.iso $BSROOT/html/static/CentOS7/dvd_content || { echo "Mount iso failed"; exit 1; }
+        sudo mount -t iso9660 -o loop $BSROOT/html/static/CentOS7/CentOS-7-x86_64-Everything-${cluster_desc_centos_version##*.}.iso $BSROOT/html/static/CentOS7/dvd_content || { echo "Mount iso failed"; exit 1; }
     fi
 fi
 
@@ -48,13 +51,11 @@ docker run -d \
        --privileged \
        -v /var/run/docker.sock:/var/run/docker.sock \
        -v $BSROOT:/bsroot \
-       bootstrapper || { echo "Failed"; exit -1; }
+       bootstrapper ${cluster_desc_start_pxe} || { log fatal "Failed"; exit -1; }
 
 # Sleep 3 seconds, waitting for registry started.
 sleep 3
 
-source $BSROOT/load_yaml.sh
-load_yaml $BSROOT/config/cluster-desc.yml cluster_desc_
 
 for DOCKER_IMAGE in $(set | grep '^cluster_desc_images_' | grep -o '".*"' | sed 's/"//g'); do
   DOCKER_TAR_FILE=$BSROOT/$(echo ${DOCKER_IMAGE}.tar | sed "s/:/_/g" |awk -F'/' '{print $NF}')