Address standalone kubelet config case

Also place in global vars and do not repeat the kube_*_config_dir
and kube_namespace vars for better code maintainability and UX.

Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>

roles/kubernetes/master/defaults/main.yml

@@ -1,28 +1,7 @@
-# This is where all the cert scripts and certs will be located
-kube_cert_dir: "{{ kube_config_dir }}/ssl"
-
-# This is where all of the bearer tokens will be stored
-kube_token_dir: "{{ kube_config_dir }}/tokens"
-
-# This is where to save basic auth file
-kube_users_dir: "{{ kube_config_dir }}/users"
-
 # An experimental dev/test only dynamic volumes provisioner,
 # for PetSets. Works for kube>=v1.3 only.
 kube_hostpath_dynamic_provisioner: "false"
 
-# This is where you can drop yaml/json files and the kubelet will run those
-# pods on startup
-kube_manifest_dir: "{{ kube_config_dir }}/manifests"
-
-# This directory is where all the additional config stuff goes
-# the kubernetes normally puts in /srv/kubernets.
-# This puts them in a sane location.
-# Editting this value will almost surely break something. Don't
-# change it. Things like the systemd scripts are hard coded to
-# look in here. Don't do it.
-kube_config_dir: /etc/kubernetes
-
 # change to 0.0.0.0 to enable insecure access from anywhere (not recommended)
 kube_apiserver_insecure_bind_address: 127.0.0.1
 
@@ -30,9 +9,6 @@ kube_apiserver_insecure_bind_address: 127.0.0.1
 # Inclusive at both ends of the range.
 kube_apiserver_node_port_range: "30000-32767"
 
-# Logging directory (sysvinit systems)
-kube_log_dir: "/var/log/kubernetes"
-
 # ETCD cert dir for connecting apiserver to etcd
 etcd_config_dir: /etc/ssl/etcd
 etcd_cert_dir: "{{ etcd_config_dir }}/ssl"

roles/kubernetes/master/files/namespace.yml

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

roles/kubernetes/master/tasks/main.yml

@@ -36,28 +36,27 @@
   tags: kube-apiserver
 
 - meta: flush_handlers
-# Create kube-system namespace
-- name: copy 'kube-system' namespace manifest
-  copy: src=namespace.yml dest=/etc/kubernetes/kube-system-ns.yml
+
+- name: copy kube system namespace manifest
+  copy: src=namespace.yml dest={{kube_config_dir}}/{{system_namespace}}-ns.yml
   run_once: yes
   when: inventory_hostname == groups['kube-master'][0]
   tags: apps
 
-- name: Check if kube-system exists
-  command: "{{ bin_dir }}/kubectl get ns kube-system"
+- name: Check if kube system namespace exists
+  command: "{{ bin_dir }}/kubectl get ns {{system_namespace}}"
   register: 'kubesystem'
   changed_when: False
   failed_when: False
   run_once: yes
   tags: apps
 
-- name: Create 'kube-system' namespace
-  command: "{{ bin_dir }}/kubectl create -f /etc/kubernetes/kube-system-ns.yml"
+- name: Create kube system namespace
+  command: "{{ bin_dir }}/kubectl create -f {{kube_config_dir}}/{{system_namespace}}-ns.yml"
   changed_when: False
   when: kubesystem|failed and inventory_hostname == groups['kube-master'][0]
   tags: apps
 
-# Write other manifests
 - name: Write kube-controller-manager manifest
   template:
     src: manifests/kube-controller-manager.manifest.j2

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

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

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

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

roles/kubernetes/master/vars/main.yml

@@ -3,4 +3,4 @@ namespace_kubesystem:
   apiVersion: v1
   kind: Namespace
   metadata:
-    name: kube-system
+    name: "{{system_namespace}}"