diff --git a/Kubernetes/KubernetesCluster/elements/kubernetes/install.d/57-kubernetes b/Kubernetes/KubernetesCluster/elements/kubernetes/install.d/57-kubernetes
index f084be5..c7582c8 100755
--- a/Kubernetes/KubernetesCluster/elements/kubernetes/install.d/57-kubernetes
+++ b/Kubernetes/KubernetesCluster/elements/kubernetes/install.d/57-kubernetes
@@ -1,9 +1,9 @@
 #!/bin/bash
-install-packages curl wget linux-libc-dev git gcc libc6-dev bridge-utils haproxy
+install-packages curl wget linux-libc-dev git gcc libc6-dev bridge-utils haproxy ntp ntpdate
 
 SVC_ROOT=/opt/bin
 
-ETCD_LATEST_VERSION="v2.2.5"
+ETCD_LATEST_VERSION="v3.0.4"
 KUBE_LATEST_VERSION="v1.3.0"
 FLANNEL_LATEST_VERSION="v0.5.5"
 
diff --git a/Kubernetes/KubernetesCluster/elements/readme.rst b/Kubernetes/KubernetesCluster/elements/readme.rst
index 1e58bd8..3cf3351 100644
--- a/Kubernetes/KubernetesCluster/elements/readme.rst
+++ b/Kubernetes/KubernetesCluster/elements/readme.rst
@@ -49,4 +49,9 @@ To build Ubuntu-based image
         vm ubuntu murano-agent docker kubernetes -o ubuntu14.04-x64-kubernetes
 
 Where ${murano_agent_root} is a path to murano-agent files
-and ${murano_apps_root} is a path to murano-apps files.
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+and ${murano_apps_root} is a path to murano-apps files.
+
+Please be careful that diskimage-builder uses tmpfs if 8 Gb memory or bigger is detected. 
+In case of 8 Gb tmpfs size is not enough to build kubernetes. 
+Use DIB_NO_TMPFS=1 in this case or hack diskimage-builder. 
+ 
\ No newline at end of file