feat/update version k8s (#31)

* feat: raise error if kubectl failed

* feat: upgrade to version 1.0.0

* fix: syntax

kubernetes/coredns.yaml.sed

@@ -51,6 +51,7 @@ data:
         log
         health
         kubernetes CLUSTER_DOMAIN SERVICE_CIDR POD_CIDR
+        prometheus :9153
         proxy . /etc/resolv.conf
         cache 30
     }
@@ -81,7 +82,7 @@ spec:
           operator: "Exists"
       containers:
       - name: coredns
-        image: coredns/coredns:0.9.10
+        image: coredns/coredns:1.0.0
         imagePullPolicy: Always
         args: [ "-conf", "/etc/coredns/Corefile" ]
         volumeMounts:

kubernetes/deploy.sh

@@ -13,5 +13,9 @@ if [[ -z $SERVICE_CIDR ]]; then
 fi
 
 CLUSTER_DNS_IP=$(kubectl get service --namespace kube-system kube-dns -o jsonpath="{.spec.clusterIP}")
+if [ $? -ne 0 ]; then
+    >&2 echo "Error! The IP address for DNS service couldn't be determined by kubectl command"
+    exit 2
+fi
 
 sed -e s/CLUSTER_DNS_IP/$CLUSTER_DNS_IP/g -e s/CLUSTER_DOMAIN/$CLUSTER_DOMAIN/g -e s?SERVICE_CIDR?$SERVICE_CIDR?g -e s?POD_CIDR?$POD_CIDR?g $YAML_TEMPLATE