kubespray/roles/kubernetes/control-plane/tasks/kubeadm-upgrade.yml

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---
- name: kubeadm | Check api is up
uri:
url: "https://{{ ip | default(fallback_ips[inventory_hostname]) }}:{{ kube_apiserver_port }}/healthz"
validate_certs: false
when: inventory_hostname in groups['kube_control_plane']
register: _result
retries: 60
delay: 5
until: _result.status == 200
- name: kubeadm | Upgrade first master
command: >-
timeout -k 600s 600s
{{ bin_dir }}/kubeadm
upgrade apply -y {{ kube_version }}
--certificate-renewal={{ kubeadm_upgrade_auto_cert_renewal }}
--config={{ kube_config_dir }}/kubeadm-config.yaml
--ignore-preflight-errors=all
--allow-experimental-upgrades
--etcd-upgrade={{ etcd_deployment_type == "kubeadm" | bool | lower }}
--force
register: kubeadm_upgrade
# Retry is because upload config sometimes fails
retries: 3
until: kubeadm_upgrade.rc == 0
when: inventory_hostname == first_kube_control_plane
failed_when: kubeadm_upgrade.rc != 0 and "field is immutable" not in kubeadm_upgrade.stderr
environment:
PATH: "{{ bin_dir }}:{{ ansible_env.PATH }}"
notify: Master | restart kubelet
- name: kubeadm | Upgrade other masters
command: >-
timeout -k 600s 600s
{{ bin_dir }}/kubeadm
upgrade apply -y {{ kube_version }}
--certificate-renewal={{ kubeadm_upgrade_auto_cert_renewal }}
--config={{ kube_config_dir }}/kubeadm-config.yaml
--ignore-preflight-errors=all
--allow-experimental-upgrades
--etcd-upgrade={{ etcd_deployment_type == "kubeadm" | bool | lower }}
--force
register: kubeadm_upgrade
when: inventory_hostname != first_kube_control_plane
failed_when:
- kubeadm_upgrade.rc != 0
- '"field is immutable" not in kubeadm_upgrade.stderr'
environment:
PATH: "{{ bin_dir }}:{{ ansible_env.PATH }}"
notify: Master | restart kubelet
- name: kubeadm | clean kubectl cache to refresh api types
file:
path: "{{ item }}"
state: absent
with_items:
- /root/.kube/cache
- /root/.kube/http-cache
# FIXME: https://github.com/kubernetes/kubeadm/issues/1318
- name: kubeadm | scale down coredns replicas to 0 if not using coredns dns_mode
command: >-
{{ kubectl }}
-n kube-system
scale deployment/coredns --replicas 0
register: scale_down_coredns
retries: 6
delay: 5
until: scale_down_coredns is succeeded
run_once: yes
when:
- kubeadm_scale_down_coredns_enabled
- dns_mode not in ['coredns', 'coredns_dual']
changed_when: false