prepare to initiate the cluster

tasks/install_server.yml

@@ -13,6 +13,12 @@
 #  when:
 #    - kubernetes_cri_changed is changed
 
+- name: Remove swapfile from /etc/fstab
+  mount:
+    name: swap
+    fstype: swap
+    state: absent
+
 - name: Ensuring /etc/systemd/system/kubelet.service.d Folder Exists
   file:
     path: "/etc/systemd/system/kubelet.service.d"
@@ -34,3 +40,65 @@
 
 - name: Enable kubelet on boot
   service: name=kubelet state=started enabled=yes
+
+- stat: path=/etc/kubernetes/admin.conf
+  register: st
+  changed_when: False
+
+- name: Create KubernetesMasterConfigured group
+  group_by: key=KubernetesMasterConfigured
+  when:
+    - st.stat.exists
+
+- include_tasks: "init_cluster.yml"
+  when:
+    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasters'][0] == ansible_hostname
+
+# Install API loadbalancer
+- include_tasks: "load_balancer.yml"
+  when:
+    - kubernetes_master is true
+    - groups['KubernetesMaster'] | length > 1
+
+# Prepare first master for extend procedure
+- include_tasks: "prepare_first_master.yml"
+  when:
+    - groups['KubernetesMasterConfigured'][0] == ansible_hostname
+    - groups['KubernetesMasterConfigured'] | length == 1 # to be tested (potential syntax error)
+    - groups['KubernetesMaster'] | length > 1
+
+- stat: path=/etc/kubernetes/admin.conf
+  register: st
+  changed_when: False
+
+- name: Create KubernetesMasterConfigured group
+  group_by: key=KubernetesMasterConfigured
+  when:
+    - st.stat.exists
+
+- name: Extend Master services on unconfigured hosts
+  include_tasks: "add_master.yml"
+  when:
+    - groups['KubernetesMaster'] | length > 1
+
+#- name: Check if a node is still tainted
+#  command: kubectl get nodes '{{ ansible_host }}' -o jsonpath='{.spec.taints}'
+#  when: taint_master
+#  register: current_taint
+#  tags: taint
+#
+#- name: taint the machine if needed
+#  command: kubectl taint nodes --all node-role.kubernetes.io/master-
+#  when: taint_master == true  and current_taint.stdout
+#  tags: taint
+      
+#
+# At this point, we have a kubernetes up and running, but ready for it
+#
+
+- name: Make /root/.kube directory
+  file: path="/root/.kube" owner=root group=root mode=0700 state=directory
+
+- name: Copy certificat file on
+  copy: src=/etc/kubernetes/admin.conf dest=/root/.kube/config remote_src=yes owner=root group=root mode=0600

tasks/main.yml

@@ -9,8 +9,28 @@
   package: name="{{ kubernetes_package_name }}" state=latest update_cache=yes
   notify: Restart kubelet
 
+- set_fact:
+    kubernetes_server: true
+    kubernetes_master: true
+  when:
+    - "'KubernetesMasters' in group_names"
+
+- set_fact:
+    kubernetes_server: true
+    kubernetes_master: false
+  when:
+    - "'KubernetesMasters' in group_names"
+
+- set_fact:
+    kubernetes_server: false
+  when:
+    - "'KubernetesMasters' not in group_names"
+    - "'KubernetesNodes' not in group_names"
+
 - name: Include kubernetes server rules
   include_tasks: "install_server.yml"
+  when:
+    - kubernetes_server is true
 
 #- name: Install python library for docker
 #  package: name="{{ python_openshift_lib }}" state=latest update_cache=yes

templates/etc/firewalld/services/kubernetes.xml.j2

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <service>
+{% if kubernetes_master is true %}
   <short>Kubernetes master</short>
   <description>Open Kubernetes master ports.</description>
   <port protocol="tcp" port="6443"/>
@@ -9,4 +10,11 @@
   <port protocol="tcp" port="10251"/>
   <port protocol="tcp" port="10252"/>
   <port protocol="tcp" port="10255"/>
+{% else %}
+  <short>Kubernetes node</short>
+  <description>Open Kubernetes node ports.</description>
+  <port protocol="tcp" port="10250"/>
+  <port protocol="tcp" port="80"/>
+  <port protocol="tcp" port="443"/>
+{% endif %}
 </service>