blob: 22bb6fbcee254339f75922185637b365f8253ce2 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
|
---
- name: Install Kubernetes Cluster (centos8)
hosts: k8s_master, k8s_node
vars_files:
- ../variables.yml
tasks:
- name: Ensuring group exists
group:
name: "{{ k8s_user }}"
state: present
- name: Creating user and making home directory
user:
system: yes
state: present
name: "{{ k8s_user }}"
groups: "{{ k8s_user }}"
home: "{{ k8s_home }}"
- name: Adding Docker repository
get_url:
url: https://download.docker.com/linux/centos/docker-ce.repo
dest: /etc/yum.repos.d/
- name: Installing Docker
yum:
state: present
update_cache: yes
name:
- docker-ce-3:18.09.1-3.el7
- docker-ce-cli-1:18.09.1-3.el7
- containerd.io-1.2.0-3.el7
- sudo
- tc
- git
- name: Creating docker directory
file:
path: /etc/docker
state: directory
mode: '0755'
- name: Copying Docker daemon configuration
copy:
src: daemon.json
dest: /etc/docker/daemon.json
owner: root
group: root
mode: '0644'
register: dockerDaemonConfig
- name: Creating containerd override directory
file:
path: /etc/systemd/system/containerd.service.d/
state: directory
mode: '0755'
- name: Copying containerd override configuration
copy:
src: containerd-override.conf
dest: /etc/systemd/system/containerd.service.d/override.conf
owner: root
group: root
mode: '0644'
- name: Reloading systemd daemon
systemd:
daemon_reload: yes
- name: Ensuring Docker is enabled and started
systemd:
name: docker
state: started
enabled: yes
- name: Wait for Docker
wait_for:
path: /var/run/docker.pid
state: present
- name: Restarting Docker due to daemon config change
systemd:
name: docker
state: restarted
when: dockerDaemonConfig.changed
- name: Adding Kubernetes repository
yum_repository:
name: kubernetes
file: kubernetes
description: Kubernetes Repo
baseurl: https://packages.cloud.google.com/yum/repos/kubernetes-el7-x86_64
gpgkey: https://packages.cloud.google.com/yum/doc/yum-key.gpg https://packages.cloud.google.com/yum/doc/rpm-package-key.gpg
gpgcheck: yes
- name: Installing kubelet and kubeadm on worker nodes
yum:
state: present
update_cache: yes
name:
- kubelet-{{ k8s_version }}-0
- kubeadm-{{ k8s_version }}-0
- name: Copying kubelet environment file
copy:
src: kubelet
dest: /etc/sysconfig/kubelet
mode: '0644'
- name: Enabling kubelet service
systemd:
name: kubelet
enabled: yes
- hosts: k8s_master
vars_files:
- ../variables.yml
tasks:
- name: Installing kubectl on master node
yum:
state: present
name:
- kubectl-{{ k8s_version }}-0
- name: Initializing Kubernetes cluster
shell: >
kubeadm init --ignore-preflight-errors all --v=5 --pod-network-cidr=192.168.0.0/16 > k8s_cluster_initialization.log &&
touch .k8s_cluster_initialized
args:
chdir: "{{ k8s_home }}"
creates: .k8s_cluster_initialized
register: output
- debug: var=output
- name: Extracting cluster join command
shell: grep -E 'kubeadm join|discovery' k8s_cluster_initialization.log
args:
chdir: "{{ k8s_home }}"
register: join
changed_when: false
- debug: var=join
- name: Calling workers to join cluster
shell: "{{ join.stdout }} --ignore-preflight-errors all"
changed_when: false
delegate_to: "{{ item }}"
with_items:
- "{{ groups['k8s_node'][0] }}"
- "{{ groups['k8s_node'][1] }}"
- "{{ groups['k8s_node'][2] }}"
- name: Creating kube folder
file:
path: "{{ item }}"
state: directory
owner: "{{ k8s_user }}"
group: "{{ k8s_user }}"
mode: '0755'
with_items:
- "{{ k8s_home }}/.kube"
- "{{ k8s_home }}/.kube/.check"
- name: Copying Kubernetes settings
copy:
src: /etc/kubernetes/admin.conf
dest: "{{ k8s_home }}/.kube/config"
owner: "{{ k8s_user }}"
group: "{{ k8s_user }}"
mode: '0644'
remote_src: yes
- name: Copying Kubernetes configuration
copy:
src: "{{ item }}"
dest: "{{ k8s_home }}/.kube"
owner: "{{ k8s_user }}"
group: "{{ k8s_user }}"
mode: '0644'
with_items:
- calico.yaml
- k8s-dashboard.yaml
- k8s-dashboard-admin.yaml
- k8s-dashboard-binding.yaml
- block:
- name: Bringing up pod network
shell: >
kubectl apply -f .kube/calico.yaml &&
touch .kube/.check/.k8s_network_installed
args:
chdir: "{{ k8s_home }}"
creates: .kube/.check/.k8s_network_installed
- name: Installing Kubernetes Dashboard
shell: >
kubectl apply -f .kube/k8s-dashboard.yaml &&
touch .kube/.check/.k8s_dashboard_installed
args:
chdir: "{{ k8s_home }}"
creates: .kube/.check/.k8s_dashboard_installed
- name: Creating Kubernetes Dashboard administrator
shell: >
kubectl apply -f
.kube/k8s-dashboard-admin.yaml &&
touch .kube/.check/.k8s_dashboard_admin_installed
args:
chdir: "{{ k8s_home }}"
creates: .kube/.check/.k8s_dashboard_admin_installed
- name: Creating Kubernetes Dashboard cluster binding
shell: >
kubectl apply -f
.kube/k8s-dashboard-binding.yaml &&
touch .kube/.check/.k8s_dashboard_binding_installed
args:
chdir: "{{ k8s_home }}"
creates: .kube/.check/.k8s_dashboard_binding_installed
- name: Cloning Kubernetes metrics server
git:
repo: https://github.com/kubernetes-sigs/metrics-server
dest: "{{ k8s_home }}/.kube/metrics-server"
version: 4f6ef77ce0cb128663c86708566b3e43cdc47ac4
- name: Deploying the metrics server
shell: >
kubectl create -f
.kube/metrics-server/deploy/1.8+ &&
touch .kube/.check/.k8s_metrics_server_installed
args:
chdir: "{{ k8s_home }}"
creates: .kube/.check/.k8s_metrics_server_installed
- name: Printing Kubernetes Dashboard token
shell: >
kubectl -n kubernetes-dashboard describe secret
$(kubectl -n kubernetes-dashboard get secret | grep admin-user | awk '{print $1}')
register: token
changed_when: false
- debug: var=token
become: true
become_user: "{{ k8s_user }}"
|
