kubespray/upgrade-cluster.yml

---
- hosts: localhost
  gather_facts: false
  tasks:
    - name: "Check ansible version !=2.7.0"
      assert:
        msg: "Ansible V2.7.0 can't be used until: https://github.com/ansible/ansible/issues/46600 is fixed"
        that:
          - ansible_version.string is version("2.7.0", "!=")
          - ansible_version.string is version("2.5.0", ">=")
      tags:
        - check
  vars:
    ansible_connection: local

- hosts: bastion[0]
  gather_facts: False
  roles:
    - { role: kubespray-defaults}
    - { role: bastion-ssh-config, tags: ["localhost", "bastion"]}

- hosts: k8s-cluster:etcd:calico-rr
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  gather_facts: false
  vars:
    # Need to disable pipelining for bootstrap-os as some systems have requiretty in sudoers set, which makes pipelining
    # fail. bootstrap-os fixes this on these systems, so in later plays it can be enabled.
    ansible_ssh_pipelining: false
  roles:
    - { role: kubespray-defaults}
    - { role: bootstrap-os, tags: bootstrap-os}

- hosts: k8s-cluster:etcd:calico-rr
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  vars:
    ansible_ssh_pipelining: true
  gather_facts: true
  pre_tasks:
    - name: gather facts from all instances
      setup:
      delegate_to: "{{item}}"
      delegate_facts: True
      with_items: "{{ groups['k8s-cluster'] + groups['etcd'] + groups['calico-rr']|default([]) }}"

- hosts: k8s-cluster:etcd:calico-rr
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  serial: "{{ serial | default('20%') }}"
  roles:
    - { role: kubespray-defaults}
    - { role: kubernetes/preinstall, tags: preinstall }
    - { role: container-engine, tags: "container-engine"}
    - { role: download, tags: download, when: "not skip_downloads" }
  environment: "{{proxy_env}}"

- hosts: etcd
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  roles:
    - { role: kubespray-defaults}
    - { role: etcd, tags: etcd, etcd_cluster_setup: true }

- hosts: k8s-cluster
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  roles:
    - { role: kubespray-defaults}
    - { role: etcd, tags: etcd, etcd_cluster_setup: false }

#Handle upgrades to master components first to maintain backwards compat.
- hosts: kube-master
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  serial: 1
  roles:
    - { role: kubespray-defaults}
    - { role: upgrade/pre-upgrade, tags: pre-upgrade }
    - { role: kubernetes/node, tags: node }
    - { role: kubernetes/master, tags: master }
    - { role: kubernetes/client, tags: client }
    - { role: kubernetes-apps/cluster_roles, tags: cluster-roles }
    - { role: upgrade/post-upgrade, tags: post-upgrade }
  environment: "{{proxy_env}}"

#Upgrade calico on all masters and nodes
- hosts: kube-master:kube-node
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  serial: "{{ serial | default('20%') }}"
  roles:
    - { role: kubespray-defaults}
    - { role: network_plugin, tags: network }
    - { role: kubernetes-apps/network_plugin, tags: network }
    - { role: kubernetes-apps/policy_controller, tags: policy-controller }

#Finally handle worker upgrades, based on given batch size
- hosts: kube-node:!kube-master
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  serial: "{{ serial | default('20%') }}"
  roles:
    - { role: kubespray-defaults}
    - { role: upgrade/pre-upgrade, tags: pre-upgrade }
    - { role: kubernetes/node, tags: node }
    - { role: kubernetes/kubeadm, tags: kubeadm, when: "kubeadm_enabled" }
    - { role: upgrade/post-upgrade, tags: post-upgrade }
  environment: "{{proxy_env}}"

- hosts: kube-master[0]
  any_errors_fatal: true
  roles:
    - { role: kubespray-defaults}
    - { role: kubernetes-apps/rotate_tokens, tags: rotate_tokens, when: "secret_changed|default(false)" }

- hosts: calico-rr
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  roles:
    - { role: kubespray-defaults}
    - { role: network_plugin/calico/rr, tags: network }

- hosts: k8s-cluster
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  roles:
    - { role: kubespray-defaults}
    - { role: dnsmasq, when: "dns_mode == 'dnsmasq_kubedns'", tags: dnsmasq }
    - { role: kubernetes/preinstall, when: "dns_mode != 'none' and resolvconf_mode == 'host_resolvconf'", tags: resolvconf }

- hosts: kube-master
  any_errors_fatal: "{{ any_errors_fatal | default(true) }}"
  roles:
    - { role: kubespray-defaults}
    - { role: kubernetes-apps, tags: apps }