Stop templating kube-system namespace and creating it (#2545)

Kubernetes makes this namespace automatically, so there is
no need for kubespray to manage it.

inventory/sample/group_vars/k8s-cluster.yml

@@ -6,7 +6,6 @@
 kube_config_dir: /etc/kubernetes
 kube_script_dir: "{{ bin_dir }}/kubernetes-scripts"
 kube_manifest_dir: "{{ kube_config_dir }}/manifests"
-system_namespace: kube-system
 
 # This is where all the cert scripts and certs will be located
 kube_cert_dir: "{{ kube_config_dir }}/ssl"

roles/dnsmasq/tasks/main.yml

@@ -91,7 +91,7 @@
 - name: Start Resources
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{system_namespace}}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"

roles/dnsmasq/templates/dnsmasq-clusterrolebinding.yml

@@ -3,11 +3,11 @@ kind: ClusterRoleBinding
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: dnsmasq
-  namespace: "{{ system_namespace }}"
+  namespace: "kube-system"
 subjects:
   - kind: ServiceAccount
     name: dnsmasq
-    namespace: "{{ system_namespace}}"
+    namespace: "kube-system"
 roleRef:
   kind: ClusterRole
   name: cluster-admin

roles/dnsmasq/templates/dnsmasq-deploy.yml

@@ -3,7 +3,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: dnsmasq
-  namespace: "{{system_namespace}}"
+  namespace: "kube-system"
   labels:
     k8s-app: dnsmasq
     kubernetes.io/cluster-service: "true"

roles/dnsmasq/templates/dnsmasq-serviceaccount.yml

@@ -3,6 +3,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: dnsmasq
-  namespace: "{{ system_namespace }}"
+  namespace: "kube-system"
   labels:
     kubernetes.io/cluster-service: "true"

roles/dnsmasq/templates/dnsmasq-svc.yml

@@ -6,7 +6,7 @@ metadata:
     kubernetes.io/cluster-service: 'true'
     k8s-app: dnsmasq
   name: dnsmasq
-  namespace: {{system_namespace}}
+  namespace: kube-system
 spec:
   ports:
     - port: 53

roles/etcd/defaults/main.yml

@@ -12,9 +12,9 @@ etcd_cert_group: root
 # Note: This does not set up DNS entries. It simply adds the following DNS
 # entries to the certificate
 etcd_cert_alt_names:
-  - "etcd.{{ system_namespace }}.svc.{{ dns_domain }}"
+  - "etcd.kube-system.svc.{{ dns_domain }}"
-  - "etcd.{{ system_namespace }}.svc"
+  - "etcd.kube-system.svc"
-  - "etcd.{{ system_namespace }}"
+  - "etcd.kube-system"
   - "etcd"
 
 etcd_script_dir: "{{ bin_dir }}/etcd-scripts"

roles/kubernetes-apps/ansible/tasks/cleanup_dns.yml

@@ -2,7 +2,7 @@
 - name: Kubernetes Apps | Delete old CoreDNS resources
   kube:
     name: "coredns"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{ bin_dir }}/kubectl"
     resource: "{{ item }}"
     state: absent
@@ -16,7 +16,7 @@
 - name: Kubernetes Apps | Delete kubeadm CoreDNS
   kube:
     name: "coredns"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{ bin_dir }}/kubectl"
     resource: "deploy"
     state: absent
@@ -28,7 +28,7 @@
 - name: Kubernetes Apps | Delete old KubeDNS resources
   kube:
     name: "kube-dns"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{ bin_dir }}/kubectl"
     resource: "{{ item }}"
     state: absent
@@ -41,7 +41,7 @@
 - name: Kubernetes Apps | Delete kubeadm KubeDNS
   kube:
     name: "kube-dns"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{ bin_dir }}/kubectl"
     resource: "{{ item }}"
     state: absent

roles/kubernetes-apps/ansible/tasks/dashboard.yml

@@ -22,7 +22,7 @@
 - name: Kubernetes Apps | Start dashboard
   kube:
     name: "{{ item.item.name }}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{ bin_dir }}/kubectl"
     resource: "{{ item.item.type }}"
     filename: "{{ kube_config_dir }}/{{ item.item.file }}"

roles/kubernetes-apps/ansible/tasks/main.yml

@@ -37,7 +37,7 @@
 - name: Kubernetes Apps | Start Resources
   kube:
     name: "{{ item.item.name }}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{ bin_dir }}/kubectl"
     resource: "{{ item.item.type }}"
     filename: "{{ kube_config_dir }}/{{ item.item.file }}"

roles/kubernetes-apps/ansible/templates/coredns-clusterrolebinding.yml.j2

@@ -15,4 +15,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: coredns
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/kubernetes-apps/ansible/templates/coredns-config.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: ConfigMap
 metadata:
   name: coredns
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     addonmanager.kubernetes.io/mode: EnsureExists
 data:

roles/kubernetes-apps/ansible/templates/coredns-deployment.yml.j2

@@ -3,7 +3,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: coredns{{ coredns_ordinal_suffix | default('') }}
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: coredns{{ coredns_ordinal_suffix | default('') }}
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/ansible/templates/coredns-sa.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: coredns
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"
     addonmanager.kubernetes.io/mode: Reconcile

roles/kubernetes-apps/ansible/templates/coredns-svc.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: coredns{{ coredns_ordinal_suffix | default('') }}
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: coredns{{ coredns_ordinal_suffix | default('') }}
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/ansible/templates/dashboard.yml.j2

@@ -25,7 +25,7 @@ metadata:
   labels:
     k8s-app: kubernetes-dashboard
   name: kubernetes-dashboard-certs
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 type: Opaque
 
 ---
@@ -37,7 +37,7 @@ metadata:
   labels:
     k8s-app: kubernetes-dashboard
   name: kubernetes-dashboard
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 
 ---
 # ------------------- Dashboard Role & Role Binding ------------------- #
@@ -46,7 +46,7 @@ kind: Role
 apiVersion: rbac.authorization.k8s.io/v1
 metadata:
   name: kubernetes-dashboard-minimal
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   # Allow Dashboard to create 'kubernetes-dashboard-key-holder' secret.
 - apiGroups: [""]
@@ -81,7 +81,7 @@ apiVersion: rbac.authorization.k8s.io/v1
 kind: RoleBinding
 metadata:
   name: kubernetes-dashboard-minimal
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 roleRef:
   apiGroup: rbac.authorization.k8s.io
   kind: Role
@@ -89,7 +89,7 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: kubernetes-dashboard
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 
 ---
 # ------------------- Gross Hack For anonymous auth through api proxy ------------------- #
@@ -103,7 +103,7 @@ rules:
   resources: ["services/proxy"]
   resourceNames: ["https:kubernetes-dashboard:"]
   verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
-- nonResourceURLs: ["/ui", "/ui/*", "/api/v1/namespaces/{{ system_namespace }}/services/https:kubernetes-dashboard:/proxy/*"]
+- nonResourceURLs: ["/ui", "/ui/*", "/api/v1/namespaces/kube-system/services/https:kubernetes-dashboard:/proxy/*"]
   verbs: ["get", "list", "watch", "create", "update", "patch", "delete"]
 
 ---
@@ -128,7 +128,7 @@ metadata:
   labels:
     k8s-app: kubernetes-dashboard
   name: kubernetes-dashboard
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 spec:
   replicas: 1
   revisionHistoryLimit: 10
@@ -200,7 +200,7 @@ metadata:
   labels:
     k8s-app: kubernetes-dashboard
   name: kubernetes-dashboard
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 spec:
   ports:
     - port: 443

roles/kubernetes-apps/ansible/templates/kubedns-autoscaler-clusterrole.yml.j2

@@ -17,7 +17,7 @@ kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: cluster-proportional-autoscaler
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   - apiGroups: [""]
     resources: ["nodes"]

roles/kubernetes-apps/ansible/templates/kubedns-autoscaler-clusterrolebinding.yml.j2

@@ -17,11 +17,11 @@ kind: ClusterRoleBinding
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: cluster-proportional-autoscaler
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 subjects:
   - kind: ServiceAccount
     name: cluster-proportional-autoscaler
-    namespace: {{ system_namespace }}
+    namespace: kube-system
 roleRef:
   kind: ClusterRole
   name: cluster-proportional-autoscaler

roles/kubernetes-apps/ansible/templates/kubedns-autoscaler-sa.yml.j2

@@ -17,4 +17,4 @@ kind: ServiceAccount
 apiVersion: v1
 metadata:
   name: cluster-proportional-autoscaler
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/kubernetes-apps/ansible/templates/kubedns-autoscaler.yml.j2

@@ -17,7 +17,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: kubedns-autoscaler
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: kubedns-autoscaler
     kubernetes.io/cluster-service: "true"
@@ -40,7 +40,7 @@ spec:
             memory: "10Mi"
         command:
         - /cluster-proportional-autoscaler
-        - --namespace={{ system_namespace }}
+        - --namespace=kube-system
         - --configmap=kubedns-autoscaler
         # Should keep target in sync with cluster/addons/dns/kubedns-controller.yaml.base
         - --target=Deployment/kube-dns

roles/kubernetes-apps/ansible/templates/kubedns-deploy.yml.j2

@@ -3,7 +3,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: kube-dns
-  namespace: "{{system_namespace}}"
+  namespace: kube-system
   labels:
     k8s-app: kube-dns
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/ansible/templates/kubedns-sa.yml.j2

@@ -3,6 +3,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: kube-dns
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/ansible/templates/kubedns-svc.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: kube-dns
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: kube-dns
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/cluster_roles/tasks/main.yml

@@ -126,32 +126,3 @@
     - kube_version | version_compare('v1.9.3', '<=')
     - inventory_hostname == groups['kube-master'][0]
   tags: vsphere
-
-# This is not a cluster role, but should be run after kubeconfig is set on master
-- name: Write kube system namespace manifest
-  template:
-    src: namespace.j2
-    dest: "{{kube_config_dir}}/{{system_namespace}}-ns.yml"
-  when: inventory_hostname == groups['kube-master'][0]
-  tags:
-    - apps
-
-- name: Check if kube system namespace exists
-  command: "{{ bin_dir }}/kubectl get ns {{system_namespace}}"
-  register: 'kubesystem'
-  changed_when: False
-  failed_when: False
-  when: inventory_hostname == groups['kube-master'][0]
-  tags:
-    - apps
-
-- name: Create kube system namespace
-  command: "{{ bin_dir }}/kubectl create -f {{kube_config_dir}}/{{system_namespace}}-ns.yml"
-  retries: 4
-  delay: "{{ retry_stagger | random + 3 }}"
-  register: create_system_ns
-  until: create_system_ns.rc == 0
-  changed_when: False
-  when: inventory_hostname == groups['kube-master'][0] and kubesystem.rc != 0
-  tags:
-    - apps

roles/kubernetes-apps/cluster_roles/templates/namespace.j2

@@ -1,4 +1,4 @@
 apiVersion: v1
 kind: Namespace
 metadata:
-  name: "{{system_namespace}}"
+  name: "kube-system"

roles/kubernetes-apps/efk/elasticsearch/tasks/main.yml

@@ -10,7 +10,7 @@
   when: rbac_enabled
 
 - name: "ElasticSearch | Create Serviceaccount and Clusterrolebinding (RBAC)"
-  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/{{ item }} -n {{ system_namespace }}"
+  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/{{ item }} -n kube-system"
   with_items:
     - "efk-sa.yml"
     - "efk-clusterrolebinding.yml"
@@ -24,7 +24,7 @@
   register: es_deployment_manifest
 
 - name: "ElasticSearch | Create ES deployment"
-  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/elasticsearch-deployment.yaml -n {{ system_namespace }}"
+  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/elasticsearch-deployment.yaml -n kube-system"
   run_once: true
   when: es_deployment_manifest.changed
 
@@ -35,6 +35,6 @@
   register: es_service_manifest
 
 - name: "ElasticSearch | Create ES service"
-  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/elasticsearch-service.yaml -n {{ system_namespace }}"
+  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/elasticsearch-service.yaml -n kube-system"
   run_once: true
   when: es_service_manifest.changed

roles/kubernetes-apps/efk/elasticsearch/templates/efk-clusterrolebinding.yml

@@ -3,11 +3,11 @@ kind: ClusterRoleBinding
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: efk
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 subjects:
   - kind: ServiceAccount
     name: efk
-    namespace: {{ system_namespace }}
+    namespace: kube-system
 roleRef:
   kind: ClusterRole
   name: cluster-admin

roles/kubernetes-apps/efk/elasticsearch/templates/efk-sa.yml

@@ -3,6 +3,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: efk
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/efk/elasticsearch/templates/elasticsearch-deployment.yml.j2

@@ -4,7 +4,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: elasticsearch-logging-v1
-  namespace: "{{ system_namespace }}"
+  namespace: kube-system
   labels:
     k8s-app: elasticsearch-logging
     version: "{{ elasticsearch_image_tag }}"

roles/kubernetes-apps/efk/elasticsearch/templates/elasticsearch-service.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: elasticsearch-logging
-  namespace: "{{ system_namespace }}"
+  namespace: "kube-system"
   labels:
     k8s-app: elasticsearch-logging
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/efk/fluentd/tasks/main.yml

@@ -17,6 +17,6 @@
   register: fluentd_ds_manifest
 
 - name: "Fluentd | Create fluentd daemonset"
-  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/fluentd-ds.yaml -n {{ system_namespace }}"
+  command: "{{ bin_dir }}/kubectl apply -f {{ kube_config_dir }}/fluentd-ds.yaml -n kube-system"
   run_once: true
   when: fluentd_ds_manifest.changed

roles/kubernetes-apps/efk/fluentd/templates/fluentd-config.yml.j2

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: ConfigMap
 metadata:
   name: fluentd-config
-  namespace: "{{ system_namespace }}"
+  namespace: "kube-system"
 data:
   {{ fluentd_config_file }}: |
     # This configuration file for Fluentd / td-agent is used

roles/kubernetes-apps/efk/fluentd/templates/fluentd-ds.yml.j2

@@ -4,7 +4,7 @@ apiVersion: extensions/v1beta1
 kind: DaemonSet
 metadata:
   name: "fluentd-es-v{{ fluentd_version }}"
-  namespace: "{{ system_namespace }}"
+  namespace: "kube-system"
   labels:
     k8s-app: fluentd-es
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/efk/kibana/tasks/main.yml

@@ -10,7 +10,7 @@
     filename: "{{kube_config_dir}}/kibana-deployment.yaml"
     kubectl: "{{bin_dir}}/kubectl"
     name: "kibana-logging"
-    namespace: "{{system_namespace}}"
+    namespace: "kube-system"
     resource: "deployment"
     state: "latest"
   with_items: "{{ kibana_deployment_manifest.changed }}"
@@ -27,7 +27,7 @@
     filename: "{{kube_config_dir}}/kibana-service.yaml"
     kubectl: "{{bin_dir}}/kubectl"
     name: "kibana-logging"
-    namespace: "{{system_namespace}}"
+    namespace: "kube-system"
     resource: "svc"
     state: "latest"
   with_items: "{{ kibana_service_manifest.changed }}"

roles/kubernetes-apps/efk/kibana/templates/kibana-deployment.yml.j2

@@ -4,7 +4,7 @@ apiVersion: extensions/v1beta1
 kind: Deployment
 metadata:
   name: kibana-logging
-  namespace: "{{ system_namespace  }}"
+  namespace: "kube-system"
   labels:
     k8s-app: kibana-logging
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/efk/kibana/templates/kibana-service.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: kibana-logging
-  namespace: "{{ system_namespace }}"
+  namespace: "kube-system"
   labels:
     k8s-app: kibana-logging
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/external_provisioner/cephfs_provisioner/defaults/main.yml

@@ -2,7 +2,7 @@
 cephfs_provisioner_image_repo: quay.io/kubespray/cephfs-provisioner
 cephfs_provisioner_image_tag: 92295a30
 
-cephfs_provisioner_namespace: "{{ system_namespace }}"
+cephfs_provisioner_namespace: "kube-system"
 cephfs_provisioner_cluster: ceph
 cephfs_provisioner_monitors: []
 cephfs_provisioner_admin_id: admin

roles/kubernetes-apps/external_provisioner/local_volume_provisioner/defaults/main.yml

@@ -2,7 +2,7 @@
 local_volume_provisioner_image_repo: quay.io/external_storage/local-volume-provisioner
 local_volume_provisioner_image_tag: v2.0.0
 
-local_volume_provisioner_namespace: "{{ system_namespace }}"
+local_volume_provisioner_namespace: "kube-system"
 local_volume_provisioner_base_dir: /mnt/disks
 local_volume_provisioner_mount_dir: /mnt/disks
 local_volume_provisioner_storage_class: local-storage

roles/kubernetes-apps/helm/tasks/main.yml

@@ -18,7 +18,7 @@
 - name: Helm | Apply Helm Manifests (RBAC)
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"
@@ -28,7 +28,7 @@
 
 - name: Helm | Install/upgrade helm
   command: >
-    {{ bin_dir }}/helm init --upgrade --tiller-image={{ tiller_image_repo }}:{{ tiller_image_tag }} --tiller-namespace={{ system_namespace }}
+    {{ bin_dir }}/helm init --upgrade --tiller-image={{ tiller_image_repo }}:{{ tiller_image_tag }} --tiller-namespace=kube-system
     {% if helm_skip_refresh %} --skip-refresh{% endif %}
     {% if helm_stable_repo_url is defined %} --stable-repo-url {{ helm_stable_repo_url }}{% endif %}
     {% if rbac_enabled %} --service-account=tiller{% endif %}

roles/kubernetes-apps/helm/templates/tiller-clusterrolebinding.yml

@@ -3,11 +3,11 @@ kind: ClusterRoleBinding
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: tiller
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 subjects:
   - kind: ServiceAccount
     name: tiller
-    namespace: {{ system_namespace }}
+    namespace: kube-system
 roleRef:
   kind: ClusterRole
   name: cluster-admin

roles/kubernetes-apps/helm/templates/tiller-sa.yml

@@ -3,6 +3,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: tiller
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/network_plugin/calico/tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Start Calico resources
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"

roles/kubernetes-apps/network_plugin/canal/tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Canal | Start Resources
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"

roles/kubernetes-apps/network_plugin/cilium/tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Cilium | Start Resources
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"
@@ -11,7 +11,7 @@
   when: inventory_hostname == groups['kube-master'][0] and not item|skipped
 
 - name: Cilium | Wait for pods to run
-  command: "{{bin_dir}}/kubectl -n {{system_namespace}} get pods -l k8s-app=cilium -o jsonpath='{.items[?(@.status.containerStatuses[0].ready==false)].metadata.name}'"
+  command: "{{bin_dir}}/kubectl -n kube-system get pods -l k8s-app=cilium -o jsonpath='{.items[?(@.status.containerStatuses[0].ready==false)].metadata.name}'"
   register: pods_not_ready
   until: pods_not_ready.stdout.find("cilium")==-1
   retries: 30

roles/kubernetes-apps/network_plugin/contiv/tasks/main.yml

@@ -3,7 +3,7 @@
 - name: Contiv | Create Kubernetes resources
   kube:
     name: "{{ item.item.name }}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{ bin_dir }}/kubectl"
     resource: "{{ item.item.type }}"
     filename: "{{ contiv_config_dir }}/{{ item.item.file }}"

roles/kubernetes-apps/network_plugin/flannel/tasks/main.yml

@@ -2,7 +2,7 @@
 - name: Flannel | Start Resources
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"

roles/kubernetes-apps/network_plugin/weave/tasks/main.yml

@@ -5,7 +5,7 @@
     kubectl: "{{ bin_dir }}/kubectl"
     filename: "{{ kube_config_dir }}/weave-net.yml"
     resource: "ds"
-    namespace: "{{system_namespace}}"
+    namespace: "kube-system"
     state: "latest"
   when: inventory_hostname == groups['kube-master'][0]
 

roles/kubernetes-apps/policy_controller/calico/tasks/main.yml

@@ -12,7 +12,7 @@
     name: calico-policy-controller
     kubectl: "{{bin_dir}}/kubectl"
     resource: rs
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     state: absent
   run_once: true
 
@@ -32,7 +32,7 @@
 - name: Start of Calico kube controllers
   kube:
     name: "{{item.item.name}}"
-    namespace: "{{ system_namespace }}"
+    namespace: "kube-system"
     kubectl: "{{bin_dir}}/kubectl"
     resource: "{{item.item.type}}"
     filename: "{{kube_config_dir}}/{{item.item.file}}"

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-controllers.yml.j2

@@ -2,7 +2,7 @@ apiVersion: apps/v1beta2
 kind: Deployment
 metadata:
   name: calico-kube-controllers
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: calico-kube-controllers
     kubernetes.io/cluster-service: "true"
@@ -15,7 +15,7 @@ spec:
   template:
     metadata:
       name: calico-kube-controllers
-      namespace: {{ system_namespace }}
+      namespace: kube-system
       labels:
         kubernetes.io/cluster-service: "true"
         k8s-app: calico-kube-controllers

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-cr.yml.j2

@@ -3,7 +3,7 @@ kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: calico-kube-controllers
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   - apiGroups:
     - ""

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-crb.yml.j2

@@ -10,4 +10,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: calico-kube-controllers
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/kubernetes-apps/policy_controller/calico/templates/calico-kube-sa.yml.j2

@@ -3,6 +3,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: calico-kube-controllers
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/kubernetes-apps/registry/defaults/main.yml

@@ -4,6 +4,6 @@ registry_image_tag: 2.6
 registry_proxy_image_repo: gcr.io/google_containers/kube-registry-proxy
 registry_proxy_image_tag: 0.4
 
-registry_namespace: "{{ system_namespace }}"
+registry_namespace: "kube-system"
 registry_storage_class: ""
 registry_disk_size: "10Gi"

roles/kubernetes-apps/rotate_tokens/tasks/main.yml

@@ -44,5 +44,5 @@
   when: needs_rotation
 
 - name: Rotate Tokens | Delete pods in system namespace
-  command: "{{ bin_dir }}/kubectl delete pods -n {{ system_namespace }} --all"
+  command: "{{ bin_dir }}/kubectl delete pods -n kube-system --all"
   when: needs_rotation

roles/kubernetes/master/templates/manifests/kube-apiserver.manifest.j2

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: kube-apiserver
-  namespace: {{system_namespace}}
+  namespace: kube-system
   labels:
     k8s-app: kube-apiserver
     kubespray: v2

roles/kubernetes/master/templates/manifests/kube-controller-manager.manifest.j2

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: kube-controller-manager
-  namespace: {{system_namespace}}
+  namespace: kube-system
   labels:
     k8s-app: kube-controller-manager
   annotations:

roles/kubernetes/master/templates/manifests/kube-scheduler.manifest.j2

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: kube-scheduler
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: kube-scheduler
   annotations:

roles/kubernetes/master/vars/main.yml

@@ -1,6 +0,0 @@
----
-namespace_kubesystem:
-  apiVersion: v1
-  kind: Namespace
-  metadata:
-    name: "{{system_namespace}}"

roles/kubernetes/node/templates/manifests/kube-proxy.manifest.j2

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: kube-proxy
-  namespace: {{system_namespace}}
+  namespace: kube-system
   labels:
     k8s-app: kube-proxy
   annotations:

roles/kubernetes/node/templates/manifests/nginx-proxy.manifest.j2

@@ -2,7 +2,7 @@ apiVersion: v1
 kind: Pod
 metadata:
   name: nginx-proxy
-  namespace: {{system_namespace}}
+  namespace: kube-system
   labels:
     k8s-app: kube-nginx
 spec:

roles/kubespray-defaults/defaults/main.yaml

@@ -61,7 +61,6 @@ dns_domain: "{{ cluster_name }}"
 kube_config_dir: /etc/kubernetes
 kube_script_dir: "{{ bin_dir }}/kubernetes-scripts"
 kube_manifest_dir: "{{ kube_config_dir }}/manifests"
-system_namespace: kube-system
 
 # This is where all the cert scripts and certs will be located
 kube_cert_dir: "{{ kube_config_dir }}/ssl"

roles/network_plugin/calico/templates/calico-config.yml.j2

@@ -2,7 +2,7 @@ kind: ConfigMap
 apiVersion: v1
 metadata:
   name: calico-config
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 data:
   etcd_endpoints: "{{ etcd_access_addresses }}"
   etcd_ca: "/calico-secrets/ca_cert.crt"

roles/network_plugin/calico/templates/calico-cr.yml.j2

@@ -3,7 +3,7 @@ kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   - apiGroups: [""]
     resources:

roles/network_plugin/calico/templates/calico-crb.yml.j2

@@ -10,4 +10,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/network_plugin/calico/templates/calico-node-sa.yml.j2

@@ -3,6 +3,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/network_plugin/calico/templates/calico-node.yml.j2

@@ -6,7 +6,7 @@ kind: DaemonSet
 apiVersion: extensions/v1beta1
 metadata:
   name: calico-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: calico-node
 spec:

roles/network_plugin/canal/templates/canal-cr-calico.yml.j2

@@ -3,7 +3,7 @@ kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: calico
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   - apiGroups: [""]
     resources:

roles/network_plugin/canal/templates/canal-crb-calico.yml.j2

@@ -11,4 +11,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: canal
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/network_plugin/canal/templates/canal-crb-flannel.yml.j2

@@ -11,4 +11,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: canal
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/network_plugin/canal/templates/canal-node-sa.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: canal
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"
 

roles/network_plugin/canal/templates/canal-node.yaml.j2

@@ -3,7 +3,7 @@ kind: DaemonSet
 apiVersion: extensions/v1beta1
 metadata:
   name: canal-node
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: canal-node
 spec:

roles/network_plugin/cilium/templates/cilium-config.yml.j2

@@ -2,7 +2,7 @@ kind: ConfigMap
 apiVersion: v1
 metadata:
   name: cilium-config
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 data:
   # This etcd-config contains the etcd endpoints of your cluster. If you use
   # TLS please make sure you uncomment the ca-file line and add the respective

roles/network_plugin/cilium/templates/cilium-crb.yml.j2

@@ -10,6 +10,6 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: cilium
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 - kind: Group
   name: system:nodes

roles/network_plugin/cilium/templates/cilium-ds.yml.j2

@@ -3,7 +3,7 @@ apiVersion: extensions/v1beta1
 kind: DaemonSet
 metadata:
   name: cilium
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 spec:
   template:
     metadata:

roles/network_plugin/cilium/templates/cilium-sa.yml.j2

@@ -3,4 +3,4 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: cilium
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/network_plugin/contiv/templates/contiv-api-proxy.yml.j2

@@ -3,7 +3,7 @@ apiVersion: extensions/v1beta1
 kind: DaemonSet
 metadata:
   name: contiv-api-proxy
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: contiv-api-proxy
 spec:
@@ -12,7 +12,7 @@ spec:
   template:
     metadata:
       name: contiv-api-proxy
-      namespace: {{ system_namespace }}
+      namespace: kube-system
       labels:
         k8s-app: contiv-api-proxy
       annotations:

roles/network_plugin/contiv/templates/contiv-config.yml.j2

@@ -5,7 +5,7 @@ kind: ConfigMap
 apiVersion: v1
 metadata:
   name: contiv-config
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 data:
   # The location of your cluster store. This is set to the
   # avdertise-client value below from the contiv-etcd service.

roles/network_plugin/contiv/templates/contiv-etcd-proxy.yml.j2

@@ -3,7 +3,7 @@ kind: DaemonSet
 apiVersion: extensions/v1beta1
 metadata:
   name: contiv-etcd-proxy
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: contiv-etcd-proxy
 spec:

roles/network_plugin/contiv/templates/contiv-etcd.yml.j2

@@ -3,7 +3,7 @@ kind: DaemonSet
 apiVersion: extensions/v1beta1
 metadata:
   name: contiv-etcd
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: contiv-etcd
 spec:

roles/network_plugin/contiv/templates/contiv-netmaster-clusterrole.yml.j2

@@ -2,7 +2,7 @@ kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: contiv-netmaster
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   - apiGroups:
     - ""

roles/network_plugin/contiv/templates/contiv-netmaster-clusterrolebinding.yml.j2

@@ -9,4 +9,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: contiv-netmaster
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/network_plugin/contiv/templates/contiv-netmaster-serviceaccount.yml.j2

@@ -2,6 +2,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: contiv-netmaster
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/network_plugin/contiv/templates/contiv-netmaster.yml.j2

@@ -3,7 +3,7 @@ kind: DaemonSet
 apiVersion: extensions/v1beta1
 metadata:
   name: contiv-netmaster
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: contiv-netmaster
 spec:
@@ -12,7 +12,7 @@ spec:
   template:
     metadata:
       name: contiv-netmaster
-      namespace: {{ system_namespace }}
+      namespace: kube-system
       labels:
         k8s-app: contiv-netmaster
       annotations:

roles/network_plugin/contiv/templates/contiv-netplugin-clusterrole.yml.j2

@@ -2,7 +2,7 @@ kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
 metadata:
   name: contiv-netplugin
-  namespace: {{ system_namespace }}
+  namespace: kube-system
 rules:
   - apiGroups:
     - ""

roles/network_plugin/contiv/templates/contiv-netplugin-clusterrolebinding.yml.j2

@@ -9,4 +9,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: contiv-netplugin
-  namespace: {{ system_namespace }}
+  namespace: kube-system

roles/network_plugin/contiv/templates/contiv-netplugin-serviceaccount.yml.j2

@@ -2,6 +2,6 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: contiv-netplugin
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     kubernetes.io/cluster-service: "true"

roles/network_plugin/contiv/templates/contiv-netplugin.yml.j2

@@ -5,7 +5,7 @@ kind: DaemonSet
 apiVersion: extensions/v1beta1
 metadata:
   name: contiv-netplugin
-  namespace: {{ system_namespace }}
+  namespace: kube-system
   labels:
     k8s-app: contiv-netplugin
 spec:

roles/network_plugin/flannel/templates/cni-flannel-rbac.yml.j2

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: ServiceAccount
 metadata:
   name: flannel
-  namespace: "{{system_namespace}}"
+  namespace: "kube-system"
 ---
 kind: ClusterRole
 apiVersion: rbac.authorization.k8s.io/v1beta1
@@ -41,4 +41,4 @@ roleRef:
 subjects:
 - kind: ServiceAccount
   name: flannel
-  namespace: "{{system_namespace}}"
+  namespace: "kube-system"

roles/network_plugin/flannel/templates/cni-flannel.yml.j2

@@ -3,7 +3,7 @@ kind: ConfigMap
 apiVersion: v1
 metadata:
   name: kube-flannel-cfg
-  namespace: "{{system_namespace}}"
+  namespace: "kube-system"
   labels:
     tier: node
     app: flannel
@@ -41,7 +41,7 @@ apiVersion: extensions/v1beta1
 kind: DaemonSet
 metadata:
   name: kube-flannel
-  namespace: "{{system_namespace}}"
+  namespace: "kube-system"
   labels:
     tier: node
     k8s-app: flannel

roles/network_plugin/weave/templates/weave-net.yml.j2

@@ -8,14 +8,14 @@ items:
       name: weave-net
       labels:
         name: weave-net
-      namespace: {{ system_namespace }}
+      namespace: kube-system
   - apiVersion: rbac.authorization.k8s.io/v1beta1
     kind: ClusterRole
     metadata:
       name: weave-net
       labels:
         name: weave-net
-      namespace: {{ system_namespace }}
+      namespace: kube-system
     rules:
       - apiGroups:
           - ''
@@ -41,7 +41,7 @@ items:
       name: weave-net
       labels:
         name: weave-net
-      namespace: {{ system_namespace }}
+      namespace: kube-system
     roleRef:
       kind: ClusterRole
       name: weave-net
@@ -49,14 +49,14 @@ items:
     subjects:
       - kind: ServiceAccount
         name: weave-net
-        namespace: {{ system_namespace }}
+        namespace: kube-system
   - apiVersion: rbac.authorization.k8s.io/v1beta1
     kind: Role
     metadata:
       name: weave-net
       labels:
         name: weave-net
-      namespace: {{ system_namespace }}
+      namespace: kube-system
     rules:
       - apiGroups:
           - ''
@@ -79,7 +79,7 @@ items:
       name: weave-net
       labels:
         name: weave-net
-      namespace: {{ system_namespace }}
+      namespace: kube-system
     roleRef:
       kind: Role
       name: weave-net
@@ -87,7 +87,7 @@ items:
     subjects:
       - kind: ServiceAccount
         name: weave-net
-        namespace: {{ system_namespace }}
+        namespace: kube-system
   - apiVersion: extensions/v1beta1
     kind: DaemonSet
     metadata:
@@ -95,7 +95,7 @@ items:
       labels:
         name: weave-net
         version: v{{ weave_version }}
-      namespace: {{ system_namespace }}
+      namespace: kube-system
     spec:
       minReadySeconds: 5
       template:

roles/vault/defaults/main.yml

@@ -86,7 +86,7 @@ vault_ca_options:
     format: pem
     ttl: "{{ vault_max_lease_ttl }}"
     exclude_cn_from_sans: true
-    alt_names: "vault.{{ system_namespace }}.svc.{{ dns_domain }},vault.{{ system_namespace }}.svc,vault.{{ system_namespace }},vault"
+    alt_names: "vault.kube-system.svc.{{ dns_domain }},vault.kube-system.svc,vault.kube-system,vault"
   etcd:
     common_name: etcd
     format: pem