ansible/roles/k8s/tasks/master-setup.yml

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2021-02-16 16:39:53 -06:00
---
- name: Initialize Kubernetes master with kubeadm init.
command: >
kubeadm init
--pod-network-cidr={{ kubernetes_pod_network.cidr }}
--apiserver-advertise-address={{ kubernetes_apiserver_advertise_address | default(ansible_default_ipv4.address, true) }}
--kubernetes-version {{ kubernetes_version_kubeadm }}
--ignore-preflight-errors={{ kubernetes_ignore_preflight_errors }}
{{ kubernetes_kubeadm_init_extra_opts }}
register: kubeadmin_init
when: not kubernetes_init_stat.stat.exists
- name: Print the init output to screen.
debug:
var: kubeadmin_init.stdout
verbosity: 2
when: not kubernetes_init_stat.stat.exists
- name: Ensure .kube directory exists.
file:
path: ~/.kube
state: directory
mode: 0755
- name: Symlink the kubectl admin.conf to ~/.kube/conf.
file:
src: /etc/kubernetes/admin.conf
dest: ~/.kube/config
state: link
mode: 0644
- name: Configure Flannel networking.
command: "{{ item }}"
with_items:
- kubectl apply -f {{ kubernetes_flannel_manifest_file_rbac }}
- kubectl apply -f {{ kubernetes_flannel_manifest_file }}
register: flannel_result
changed_when: "'created' in flannel_result.stdout"
when: kubernetes_pod_network.cni == 'flannel'
- name: Configure Calico networking.
command: "{{ item }}"
with_items:
- kubectl apply -f {{ kubernetes_calico_manifest_file }}
register: calico_result
changed_when: "'created' in calico_result.stdout"
when: kubernetes_pod_network.cni == 'calico'
- name: Get Kubernetes version for Weave installation.
shell: kubectl version | base64 | tr -d '\n'
changed_when: false
register: kubectl_version
when: kubernetes_pod_network.cni == 'weave'
- name: Configure Weave networking.
command: "{{ item }}"
with_items:
- "kubectl apply -f https://cloud.weave.works/k8s/net?k8s-version={{ kubectl_version.stdout_lines[0] }}"
register: weave_result
changed_when: "'created' in weave_result.stdout"
when: kubernetes_pod_network.cni == 'weave'
# TODO: Check if taint exists with something like `kubectl describe nodes`
# instead of using kubernetes_init_stat.stat.exists check.
- name: Allow pods on master node (if configured).
command: "kubectl taint nodes --all node-role.kubernetes.io/master-"
when:
- kubernetes_allow_pods_on_master | bool
- not kubernetes_init_stat.stat.exists
- name: Check if Kubernetes Dashboard UI service already exists.
shell: kubectl get services --namespace kube-system | grep -q kubernetes-dashboard
changed_when: false
failed_when: false
register: kubernetes_dashboard_service
when: kubernetes_enable_web_ui | bool
- name: Enable the Kubernetes Web Dashboard UI (if configured).
command: "kubectl create -f {{ kubernetes_web_ui_manifest_file }}"
when:
- kubernetes_enable_web_ui | bool
- kubernetes_dashboard_service is failed