Add playbook to join a node and refactor playbs to use version variable (docker and k8s)

Author: PabloPie

create-worker-node.yml

@@ -0,0 +1,44 @@
+- name: create new worker node
+  hosts: localhost
+  connection: local
+  gather_facts: false
+
+  vars_files:
+    - "vm_vars/credentials.yaml"
+    - "vm_vars/settings.yaml"
+  vars:
+    # redefine any VM variables that you want to override
+    worker_name: node4
+    ip: "{{ base_net }}.137" ## Important to set this up to a non taken ip within the vlan
+
+  tasks:
+
+  - name: worker creation
+    gandi_vps:
+      gandi_api_key: "{{ gandi_api_key }}"
+      name: "{{ worker_name }}"
+      image: "{{ image }}"
+      machine_type: custom
+      datacenter: "{{ datacenter }}"
+      sshkey_ids:
+        - "{{ gandi_ssh_key_id }}"
+      cores: "{{ node_cpu }}"
+      memory: "{{ node_mem }}"
+      disk: "{{ node_disk }}"
+      interfaces: {'privates': [{'vlan': "{{ vlan_name }}", 'ipv4': "{{ ip }}"}]}
+      state: running
+      farm: worker
+    tags:
+      - worker
+
+- name: bootstrap kubernetes worker 
+  vars:
+    #kube_token: # Generate a token
+    #kubernetes_version: #if the version differs from the global one
+  hosts: node4 #Rename to ${worker_name}
+  roles:
+    - common
+    - docker
+    - kube
+    - worker
+    

group_vars/all.template

@@ -26,7 +26,8 @@ kubeadm_reset: true
 ansible_user: root
 
 # Versions
-node_exporter_version: 0.17.0
+kubernetes_version: "1.13.2-00"
+docker_version: "17.03.3~ce-0~ubuntu-xenial"
 alertmanager_version: 0.15.3
 docker_version: TBD #not used
 

roles/common/tasks/main.yml

@@ -1,7 +1,4 @@
 ---
-
-- include: node_exporter.yml
-
 - name: copy ssh keys
   copy:
     src: files/ssh_authorized_keys
@@ -22,5 +19,3 @@
   apt:
     update_cache: yes
     upgrade: dist
-
-

roles/docker/tasks/main.yml

@@ -1,6 +1,6 @@
 - name: install dependencies
   apt:
-    package: {{ item }}
+    package: "{{ item }}"
     state: installed
     update_cache: yes
   with_items:
@@ -22,10 +22,10 @@
 
 - name: install docker ce
   apt:
-    package: {{ item }}
+    package: "{{ item }}"
     update_cache: yes
   with_items:
-    - docker-ce=17.03.3~ce-0~ubuntu-xenial
+    - docker-ce={{ docker_version }}
 
 - name: add user to group docker
   command: usermod -aG docker {{ ansible_user }}

roles/kube/tasks/main.yml

@@ -1,5 +1,8 @@
 - name: install dependencies
-  apt: package={{ item }} state=installed update_cache=yes
+  apt:
+    package: "{{ item }}"
+    state: installed
+    update_cache: yes
   with_items:
     - apt-transport-https
     - curl
@@ -16,6 +19,8 @@
     state: present
 
 - name: install kube utilities
-  apt: package={{ item }} update_cache=yes
+  apt:
+    package: "{{ item }}"
+    update_cache: yes
   with_items:
-    - kubectl
+    - kubectl={{ kubernetes_version }}

roles/master/tasks/main.yml

@@ -2,10 +2,13 @@
   command: swapoff -a
 
 - name: install kube utilities
-  apt: package={{ item }} update_cache=yes
+  apt:
+    package: "{{ item }}"
+    update_cache: yes
   with_items:
-    - kubelet
-    - kubeadm
+    #- kubernetes-cni=0.6.0-00 # Temporary requirement if using kubernetes version 1.13.2
+    - kubelet={{ kubernetes_version }}
+    - kubeadm={{ kubernetes_version }}
 
 - name: reset kubeadm
   command: kubeadm reset --force

roles/worker/tasks/main.yml

@@ -2,10 +2,13 @@
   command: swapoff -a
 
 - name: install kube utilities
-  apt: package={{ item }} update_cache=yes
+  apt:
+    package: "{{ item }}"
+    update_cache: yes
   with_items:
-    - kubelet
-    - kubeadm
+    #- kubernetes-cni=0.6.0-00 # Temporary requirement if using kubernetes version 1.13.2
+    - kubeadm={{ kubernetes_version }}
+    - kubelet={{ kubernetes_version }}
 
 - name: reset before join
   command: kubeadm reset --force