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---
- name: fetch secrets needed for secondary control-plane node
run_once: true
delegate_to: "{{ groups['_kubernetes_primary_controlplane_node_'] | first }}"
block:
- name: fetch list of current nodes
check_mode: no
command: kubectl --kubeconfig /etc/kubernetes/admin.conf get nodes -o name
changed_when: False
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
check_mode: no
when: "groups['_kubernetes_controlplane_nodes_'] | map('extract', hostvars, 'kubernetes_node_name') | difference(kubernetes_current_nodes) | length > 0"
command: kubeadm init phase upload-certs --upload-certs
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: generate kubeadm.config
template:
src: kubeadm-join.config.j2
dest: /etc/kubernetes/kubeadm.config
mode: 0600
changed_when: False
- name: join kubernetes secondary control-plane node and store log
block:
- name: join kubernetes secondary control-plane node
throttle: 1
command: "kubeadm join --config /etc/kubernetes/kubeadm.config"
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
- name: wait for new control-plane node to register
delegate_to: "{{ groups['_kubernetes_primary_controlplane_node_'] | first }}"
check_mode: no
command: "kubectl --kubeconfig /etc/kubernetes/admin.conf get nodes -o name {{ kubernetes_node_name }}"
changed_when: False
register: kubectl_node_get
until: kubectl_node_get.rc == 0
retries: 30
dely: 2
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