diff --git a/roles/kubernetes-apps/helm/tasks/main.yml b/roles/kubernetes-apps/helm/tasks/main.yml
index da02f9ace..158eff5ca 100644
--- a/roles/kubernetes-apps/helm/tasks/main.yml
+++ b/roles/kubernetes-apps/helm/tasks/main.yml
@@ -39,7 +39,7 @@
   register: install_helm
   changed_when: false
 
-#FIXME: https://github.com/helm/helm/issues/4063
+# FIXME: https://github.com/helm/helm/issues/4063
 - name: Helm | Force apply tiller overrides if necessary
   shell: >
     {{ bin_dir }}/helm init --upgrade --tiller-image={{ tiller_image_repo }}:{{ tiller_image_tag }} --tiller-namespace={{ tiller_namespace }}
diff --git a/roles/kubernetes/preinstall/tasks/0050-create_directories.yml b/roles/kubernetes/preinstall/tasks/0050-create_directories.yml
index a91f81eb0..11f8e00d4 100644
--- a/roles/kubernetes/preinstall/tasks/0050-create_directories.yml
+++ b/roles/kubernetes/preinstall/tasks/0050-create_directories.yml
@@ -1,3 +1,4 @@
+---
 - name: Create kubernetes directories
   file:
     path: "{{ item }}"
diff --git a/roles/kubernetes/preinstall/tasks/0070-system-packages.yml b/roles/kubernetes/preinstall/tasks/0070-system-packages.yml
index 2df3a0025..2d1137cbf 100644
--- a/roles/kubernetes/preinstall/tasks/0070-system-packages.yml
+++ b/roles/kubernetes/preinstall/tasks/0070-system-packages.yml
@@ -1,3 +1,4 @@
+---
 - name: Update package management cache (YUM)
   yum:
     update_cache: yes
diff --git a/roles/kubernetes/preinstall/tasks/0080-system-configurations.yml b/roles/kubernetes/preinstall/tasks/0080-system-configurations.yml
index 76944cb61..cc74e624a 100644
--- a/roles/kubernetes/preinstall/tasks/0080-system-configurations.yml
+++ b/roles/kubernetes/preinstall/tasks/0080-system-configurations.yml
@@ -1,3 +1,4 @@
+---
 # Todo : selinux configuration
 - name: Confirm selinux deployed
   stat:
diff --git a/roles/network_plugin/calico/defaults/main.yml b/roles/network_plugin/calico/defaults/main.yml
index e9f3c70a7..a1c6f1d22 100644
--- a/roles/network_plugin/calico/defaults/main.yml
+++ b/roles/network_plugin/calico/defaults/main.yml
@@ -2,7 +2,7 @@
 # Enables Internet connectivity from containers
 nat_outgoing: true
 
-#add default ippool name
+# add default ippool name
 calico_pool_name: "default-pool"
 
 # Use IP-over-IP encapsulation across hosts
diff --git a/roles/network_plugin/calico/tasks/install.yml b/roles/network_plugin/calico/tasks/install.yml
index 94cbbde5f..4e1f1dc5e 100644
--- a/roles/network_plugin/calico/tasks/install.yml
+++ b/roles/network_plugin/calico/tasks/install.yml
@@ -164,10 +164,10 @@
   delay: "{{ retry_stagger | random + 3 }}"
   with_items: "{{ peers|default([]) }}"
   when:
-   - calico_version_on_server.stdout|version_compare('v3.0.0', '<')
-   - not calico_upgrade_enabled
-   - peer_with_router|default(false)
-   - inventory_hostname in groups['k8s-cluster']
+    - calico_version_on_server.stdout|version_compare('v3.0.0', '<')
+    - not calico_upgrade_enabled
+    - peer_with_router|default(false)
+    - inventory_hostname in groups['k8s-cluster']
 
 - name: Calico | Configure peering with route reflectors
   shell: >
@@ -208,10 +208,10 @@
   delay: "{{ retry_stagger | random + 3 }}"
   with_items: "{{ groups['calico-rr'] | default([]) }}"
   when:
-   - calico_version_on_server.stdout|version_compare('v3.0.0', '<')
-   - not calico_upgrade_enabled
-   - peer_with_calico_rr|default(false)
-   - hostvars[item]['cluster_id'] == cluster_id
+    - calico_version_on_server.stdout|version_compare('v3.0.0', '<')
+    - not calico_upgrade_enabled
+    - peer_with_calico_rr|default(false)
+    - hostvars[item]['cluster_id'] == cluster_id
 
 
 - name: Calico | Create calico manifests
diff --git a/roles/network_plugin/calico/templates/calico-node.yml.j2 b/roles/network_plugin/calico/templates/calico-node.yml.j2
index 38469624e..09eeb6618 100644
--- a/roles/network_plugin/calico/templates/calico-node.yml.j2
+++ b/roles/network_plugin/calico/templates/calico-node.yml.j2
@@ -136,6 +136,7 @@ spec:
               memory: {{ calico_node_memory_requests }}
           livenessProbe:
             httpGet:
+              host: 127.0.0.1
               path: /liveness
               port: 9099
             periodSeconds: 10
@@ -143,6 +144,7 @@ spec:
             failureThreshold: 6
           readinessProbe:
             httpGet:
+              host: 127.0.0.1
               path: /readiness
               port: 9099
             periodSeconds: 10