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---
- name: fetch secrets needed for secondary master
run_once: true
delegate_to: "{{ groups['_kubernetes_primary_master_'] | first }}"
block:
- name: fetch list of current nodes
command: kubectl --kubeconfig /etc/kubernetes/admin.conf get nodes -o name
changed_when: False
check_mode: no
register: kubectl_node_list
- name: save list of current nodes
set_fact:
kubernetes_current_nodes: "{{ kubectl_node_list.stdout_lines | map('replace', 'node/', '') | list }}"
- name: upload certs
when: "groups['_kubernetes_masters_'] | difference(kubernetes_current_nodes) | length > 0"
command: kubeadm init phase upload-certs --upload-certs
check_mode: no
register: kubeadm_upload_certs
- name: extracting encryption key for certs
set_fact:
kubeadm_upload_certs_key: "{% if kubeadm_upload_certs.stdout is defined %}{{ kubeadm_upload_certs.stdout_lines | last }}{% endif %}"
- name: join kubernetes secondary master node and store log
block:
- name: join kubernetes secondary master node
throttle: 1
command: "kubeadm join 127.0.0.1:6443 --node-name {{ inventory_hostname }} --apiserver-bind-port 6442{% if kubernetes_overlay_node_ip is defined %} --apiserver-advertise-address {{ kubernetes_overlay_node_ip }}{% endif %}{% if kubernetes_cri_socket %} --cri-socket {{ kubernetes_cri_socket }}{% endif %} --token '{{ kube_bootstrap_token }}' --discovery-token-ca-cert-hash '{{ kube_bootstrap_ca_cert_hash }}' --control-plane --certificate-key {{ kubeadm_upload_certs_key }}"
args:
creates: /etc/kubernetes/kubelet.conf
register: kubeadm_join
always:
- name: dump output of kubeadm join to log file
when: kubeadm_join is changed
# This is not a handler by design to make sure this action runs at this point of the play.
copy: # noqa 503
content: "{{ kubeadm_join.stdout }}\n"
dest: /etc/kubernetes/kubeadm-join.log
- name: dump error output of kubeadm join to log file
when: kubeadm_join.changed and kubeadm_join.stderr
copy:
content: "{{ kubeadm_join.stderr }}\n"
dest: /etc/kubernetes/kubeadm-join.errors
# TODO: acutally check if node has registered
- name: give the new master(s) a moment to register
when: kubeadm_join is changed
pause: # noqa 503
seconds: 5
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