c12s-kubespray/roles/kubernetes/master/tasks/pre-upgrade.yml

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---
- name: "Pre-upgrade | etcd3 upgrade | see if old config exists"
command: "{{ bin_dir }}/etcdctl --peers={{ etcd_access_addresses }} ls /registry/minions"
environment:
ETCDCTL_API: 2
register: old_data_exists
delegate_to: "{{groups['etcd'][0]}}"
when: kube_apiserver_storage_backend == "etcd3"
failed_when: false
- name: "Pre-upgrade | etcd3 upgrade | use etcd2 unless forced to etcd3"
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set_fact:
kube_apiserver_storage_backend: "etcd2"
when: old_data_exists.rc == 0 and not force_etcd3|bool
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- name: "Pre-upgrade | Delete master manifests on all kube-masters"
file:
path: "/etc/kubernetes/manifests/{{item[1]}}.manifest"
state: absent
delegate_to: "{{item[0]}}"
with_nested:
- "{{groups['kube-master']}}"
- ["kube-apiserver", "kube-controller-manager", "kube-scheduler"]
register: kube_apiserver_manifest_replaced
when: (secret_changed|default(false) or etcd_secret_changed|default(false))
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- name: "Pre-upgrade | Delete master containers forcefully on all kube-masters"
shell: "docker ps -f name=k8s-{{item}}* -q | xargs --no-run-if-empty docker rm -f"
delegate_to: "{{item[0]}}"
with_nested:
- "{{groups['kube-master']}}"
- ["kube-apiserver", "kube-controller-manager", "kube-scheduler"]
when: kube_apiserver_manifest_replaced.changed
run_once: true