many changes

roles/kubernetes-base/files/docker-daemon.json

@@ -0,0 +1,11 @@
+{
+  "exec-opts": ["native.cgroupdriver=systemd"],
+  "log-driver": "json-file",
+  "log-opts": {
+    "max-size": "100m"
+  },
+  "storage-driver": "overlay2",
+  "storage-opts": [
+    "overlay2.override_kernel_check=true"
+  ]
+}

roles/kubernetes-base/files/kubenet-config.json.conf

@@ -0,0 +1,20 @@
+{
+  "cniVersion": "0.3.0",
+  "name": "mynet",
+  "type": "bridge",
+  "bridge": "cbr0",
+  "isDefaultGateway": true,
+  "ipMasq": true,
+  "hairpinMode": true,
+  "ipam": {
+    "type": "host-local",
+    "ranges": [
+      [
+        {
+          "subnet": "2001:470:6d:22c:42::/80",
+          "gateway": "2001:470:6d:22c::1"
+        }
+      ]
+    ]
+  }
+}

roles/kubernetes-base/files/kubernetes.repo

@@ -0,0 +1,7 @@
+[kubernetes]
+name=Kubernetes
+baseurl=https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
+enabled=1
+gpgcheck=1
+repo_gpgcheck=1
+gpgkey=https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg

roles/kubernetes-base/files/systemd-unit-kubelet.conf

@@ -0,0 +1,13 @@
+[Service]
+Environment="KUBELET_KUBECONFIG_ARGS=--bootstrap-kubeconfig=/etc/kubernetes/bootstrap-kubelet.conf
+--kubeconfig=/etc/kubernetes/kubelet.conf"
+Environment="KUBELET_CONFIG_ARGS=--config=/var/lib/kubelet/config.yaml"
+# This is a file that "kubeadm init" and "kubeadm join" generates at runtime, populating 
+# the KUBELET_KUBEADM_ARGS variable dynamically
+EnvironmentFile=-/var/lib/kubelet/kubeadm-flags.env
+# This is a file that the user can use for overrides of the kubelet args as a last resort. Preferably,
+#the user should use the .NodeRegistration.KubeletExtraArgs object in the configuration files instead.
+# KUBELET_EXTRA_ARGS should be sourced from this file.
+EnvironmentFile=-/etc/default/kubelet
+ExecStart=
+ExecStart=/usr/bin/kubelet $KUBELET_KUBECONFIG_ARGS $KUBELET_CONFIG_ARGS $KUBELET_KUBEADM_ARGS $KUBELET_EXTRA_ARGS