From 2ce6678959565414f95edc3de950ca5af47281d5 Mon Sep 17 00:00:00 2001
From: Adrien Reslinger <adrien@reslinger.net>
Date: Sat, 6 Feb 2021 15:22:17 +0100
Subject: [PATCH] Deploy multiple clusters in one time

---
 tasks/cluster_kubeadm.yml | 49 ++++++++++++++++++---------------------
 tasks/install_server.yml  | 26 ++++++++++++++++-----
 2 files changed, 43 insertions(+), 32 deletions(-)

diff --git a/tasks/cluster_kubeadm.yml b/tasks/cluster_kubeadm.yml
index f7e254f..d3afe88 100644
--- a/tasks/cluster_kubeadm.yml
+++ b/tasks/cluster_kubeadm.yml
@@ -187,7 +187,7 @@
 
 - name: Create KubernetesMasterConfigured group
   group_by:
-    key: KubernetesMasterConfigured
+    key: KubernetesMasterConfigured_{{ kubernetes_cluster_name }}
   when:
     - st.stat.exists
 
@@ -209,28 +209,25 @@
 #    - groups['KubernetesMasters'] | length > 1
   changed_when: False
 
-- name: Deploy initial kubeadm config
-  template:
-    src: kubeadm-config.yaml.j2
-    dest: /root/kubeadm-config.yaml
-    owner: root
-    group: root
-    mode: 0600
-  when:
-    - groups['KubernetesMasterConfigured'] is not defined
-    - groups['KubernetesMasters'][0] == ansible_hostname
+- name: Deploy First controler
+  block:
+  - name: Deploy initial kubeadm config
+    template:
+      src: kubeadm-config.yaml.j2
+      dest: /root/kubeadm-config.yaml
+      owner: root
+      group: root
+      mode: 0600
 
-- name: Init Kubernetes on {{ groups['KubernetesMasters'][0] }}
-  command: kubeadm init --config=/root/kubeadm-config.yaml
-  when:
-    - groups['KubernetesMasterConfigured'] is not defined
-    - groups['KubernetesMasters'][0] == ansible_hostname
+  - name: Init Kubernetes on {{ groups['KubernetesMasters'][0] }}
+    command: kubeadm init --config=/root/kubeadm-config.yaml
+
+  - name: Add {{ ansible_hostname }} to KubernetesMasterConfigured group
+    group_by:
+      key: KubernetesMasterConfigured_{{ kubernetes_cluster_name }}
 
-- name: Add {{ ansible_hostname }} to KubernetesMasterConfigured group
-  group_by:
-    key: KubernetesMasterConfigured
   when:
-    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasterConfigured_' ~ kubernetes_cluster_name] is not defined
     - groups['KubernetesMasters'][0] == ansible_hostname
 
 # End of first controler
@@ -242,7 +239,7 @@
   changed_when: False
   ignore_errors: yes
   when:
-    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasterConfigured_' ~ kubernetes_cluster_name] is not defined
 
 #- name: Deploy kubeadm config
 #  template:
@@ -260,7 +257,7 @@
   register: kubernetes_certificateKey
   delegate_to: "{{ lb_kubemaster }}"
   when:
-    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasterConfigured_' ~ kubernetes_cluster_name] is not defined
     - server_enrolled.rc == 1
     - kubernetes_master|bool
 
@@ -269,7 +266,7 @@
   register: kubetoken
   delegate_to: "{{ lb_kubemaster }}"
   when:
-    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasterConfigured_' ~ kubernetes_cluster_name] is not defined
     - server_enrolled.rc == 1
 
 - name: Retreive hash certificat
@@ -282,7 +279,7 @@
   register: cacerthash
   delegate_to: "{{ lb_kubemaster }}"
   when:
-    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasterConfigured_' ~ kubernetes_cluster_name] is not defined
     - server_enrolled.rc == 1
 
 - name: Deploy kubeadm config
@@ -293,11 +290,11 @@
     group: root
     mode: 0600
   when:
-    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasterConfigured_' ~ kubernetes_cluster_name] is not defined
     - server_enrolled.rc == 1
 
 - name: Join '{{ ansible_hostname }}' to Kubernetes cluster
   command: kubeadm join --config=/root/kubeadm-config.yaml
   when:
-    - groups['KubernetesMasterConfigured'] is not defined
+    - groups['KubernetesMasterConfigured_' ~ kubernetes_cluster_name] is not defined
     - server_enrolled.rc == 1
diff --git a/tasks/install_server.yml b/tasks/install_server.yml
index 79ec6c8..89dd6c9 100644
--- a/tasks/install_server.yml
+++ b/tasks/install_server.yml
@@ -1,4 +1,17 @@
 ---
+- name: Add master to KubernetesMasters_ClusterName group
+  group_by:
+    key: KubernetesMasters_{{ kubernetes_cluster_name }}
+  when:
+    - "'KubernetesMasters' in group_names"
+
+- name: Add node to KubernetesNodes_ClusterName group
+  group_by:
+    key: KubernetesNodes_{{ kubernetes_cluster_name }}
+  when:
+    - "'KubernetesNodes' in group_names"
+
+
 - name: Disable SWAP since kubernetes can't work with swap enabled (1/2)
   command: swapoff -a
   changed_when: false
@@ -15,11 +28,11 @@
     thinpool: kubernetes
     size: 20g
 
-# Install API loadbalancer
-- include_tasks: "load_balancer.yml"
-  when:
-    - kubernetes_master|bool
-    - groups['KubernetesMasters'] | length > 1
+## Install API loadbalancer
+#- include_tasks: "load_balancer.yml"
+#  when:
+#    - kubernetes_master|bool
+#    - groups['KubernetesMasters'] | length > 1
 
 - name: Kubernetes cluster with kubeadm
   include_tasks: "cluster_kubeadm.yml"
@@ -82,12 +95,13 @@
 - name: Check if a node is still tainted
   command: kubectl --kubeconfig=/etc/kubernetes/admin.conf get nodes '{{ ansible_hostname | lower }}' -o jsonpath='{.spec.taints}'
   register: current_taint
+  check_mode: no
   when:
     - kubernetes_master_taint|bool
 
 - name: taint the machine if needed
 #  command: kubectl --kubeconfig=/etc/kubernetes/admin.conf taint nodes --all node-role.kubernetes.io/master-
-  command: kubectl taint nodes '{{ ansible_hostname | lower }}' node-role.kubernetes.io/master-
+  command: kubectl --kubeconfig=/etc/kubernetes/admin.conf taint nodes '{{ ansible_hostname | lower }}' node-role.kubernetes.io/master-
   when:
     - kubernetes_master_taint|bool
     - current_taint.stdout