Merge pull request #291 from moelsayed/add_version

Add kubernetes version and pin etcd version in cluster.yml

cluster.yml

@@ -1,4 +1,7 @@
 ---
+
+kubernetes_version: v1.8.5-rancher4
+
 auth:
   strategy: x509
   options:
@@ -35,7 +38,7 @@ private_registries:
   - url: registry.com
     user: Username
     passowrd: password
-    
+
 nodes:
   - address: 1.1.1.1
     user: ubuntu
@@ -76,7 +79,7 @@ services:
 
 
 system_images:
-  etcd: quay.io/coreos/etcd:latest
+  etcd: quay.io/coreos/etcd:v3.0.17
   kubernetes: rancher/k8s:v1.8.5-rancher4
   alpine: alpine:latest
   nginx_proxy: rancher/rke-nginx-proxy:v0.1.1

cluster/defaults.go

@@ -23,7 +23,7 @@ const (
 	DefaultCertDownloaderImage            = "rancher/rke-cert-deployer:v0.1.1"
 	DefaultKubernetesServicesSidecarImage = "rancher/rke-service-sidekick:v0.1.0"
 
-	DefaultEtcdImage = "quay.io/coreos/etcd:latest"
+	DefaultEtcdImage = "quay.io/coreos/etcd:v3.0.17"
 	DefaultK8sImage  = "rancher/k8s:v1.8.5-rancher4"
 
 	DefaultFlannelImage    = "quay.io/coreos/flannel:v0.9.1"