Extract hypercube version (kubernetes-digitalocean-terraform#16)

Author: alpe

01-master.yaml

@@ -27,7 +27,7 @@ write_files:
         ExecStartPre=/usr/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/usr/bin/mkdir -p /var/log/containers
 
-        Environment=KUBELET_VERSION=v1.3.6_coreos.0
+        Environment=KUBELET_VERSION=${HYPERCUBE_VERSION}
         Environment="RKT_OPTS=--volume var-log,kind=host,source=/var/log \
           --mount volume=var-log,target=/var/log \
           --volume dns,kind=host,source=/etc/resolv.conf \
@@ -58,7 +58,7 @@ write_files:
           hostNetwork: true
           containers:
           - name: kube-apiserver
-            image: quay.io/coreos/hyperkube:v1.3.6_coreos.0
+            image: quay.io/coreos/hyperkube:${HYPERCUBE_VERSION}
             command:
             - /hyperkube
             - apiserver
@@ -110,7 +110,7 @@ write_files:
           hostNetwork: true
           containers:
           - name: kube-proxy
-            image: quay.io/coreos/hyperkube:v1.3.6_coreos.0
+            image: quay.io/coreos/hyperkube:${HYPERCUBE_VERSION}
             command:
             - /hyperkube
             - proxy
@@ -138,7 +138,7 @@ write_files:
           hostNetwork: true
           containers:
           - name: kube-controller-manager
-            image: quay.io/coreos/hyperkube:v1.3.6_coreos.0
+            image: quay.io/coreos/hyperkube:${HYPERCUBE_VERSION}
             command:
             - /hyperkube
             - controller-manager
@@ -179,7 +179,7 @@ write_files:
           hostNetwork: true
           containers:
           - name: kube-scheduler
-            image: quay.io/coreos/hyperkube:v1.3.6_coreos.0
+            image: quay.io/coreos/hyperkube:${HYPERCUBE_VERSION}
             command:
             - /hyperkube
             - scheduler

02-worker.yaml

@@ -28,7 +28,7 @@ write_files:
         ExecStartPre=/usr/bin/mkdir -p /etc/kubernetes/manifests
         ExecStartPre=/usr/bin/mkdir -p /var/log/containers
 
-        Environment=KUBELET_VERSION=v1.3.6_coreos.0
+        Environment=KUBELET_VERSION=${HYPERCUBE_VERSION}
         Environment="RKT_OPTS=--volume var-log,kind=host,source=/var/log \
           --mount volume=var-log,target=/var/log \
           --volume dns,kind=host,source=/etc/resolv.conf \
@@ -62,7 +62,7 @@ write_files:
           hostNetwork: true
           containers:
           - name: kube-proxy
-            image: quay.io/coreos/hyperkube:v1.3.6_coreos.0
+            image: quay.io/coreos/hyperkube:${HYPERCUBE_VERSION}
             command:
             - /hyperkube
             - proxy

deploy.tf

@@ -18,7 +18,9 @@ variable "do_region" {
 }
 variable "ssh_fingerprint" {}
 variable "number_of_workers" {}
-
+variable "hypercube_version" {
+    default = "v1.3.6_coreos.0"
+}
 ###############################################################################
 #
 # Specify provider
@@ -123,6 +125,7 @@ data "template_file" "master_yaml" {
         ETCD_IP = "${digitalocean_droplet.k8s_etcd.ipv4_address}"
         POD_NETWORK = "10.2.0.0/16"
         SERVICE_IP_RANGE = "10.3.0.0/24"
+        HYPERCUBE_VERSION = "${var.hypercube_version}"
     }
 }
 
@@ -243,6 +246,7 @@ data "template_file" "worker_yaml" {
         DNS_SERVICE_IP = "10.3.0.10"
         ETCD_IP = "${digitalocean_droplet.k8s_etcd.ipv4_address}"
         MASTER_HOST = "${digitalocean_droplet.k8s_master.ipv4_address}"
+        HYPERCUBE_VERSION = "${var.hypercube_version}"
     }
 }