85c851f519
This fixes the scenario where masters are upgraded one at a time and coredns gets improperly scaled back up to 2 replicas. Change-Id: I7cc9283f40efcfd61b5813c89a5805c95d901567
56 lines
1.8 KiB
YAML
56 lines
1.8 KiB
YAML
---
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- name: kubeadm | Upgrade first master
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command: >-
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timeout -k 600s 600s
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{{ bin_dir }}/kubeadm
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upgrade apply -y {{ kube_version }}
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--config={{ kube_config_dir }}/kubeadm-config.yaml
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--ignore-preflight-errors=all
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--allow-experimental-upgrades
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--allow-release-candidate-upgrades
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--etcd-upgrade=false
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--force
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register: kubeadm_upgrade
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# Retry is because upload config sometimes fails
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retries: 3
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when: inventory_hostname == groups['kube-master']|first
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failed_when: kubeadm_upgrade.rc != 0 and "field is immutable" not in kubeadm_upgrade.stderr
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notify: Master | restart kubelet
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# FIXME: https://github.com/kubernetes/kubeadm/issues/1498 remove stdout_lines
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# check after issue is fixed
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- name: kubeadm | Upgrade other masters
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command: >-
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timeout -k 600s 600s
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{{ bin_dir }}/kubeadm
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upgrade apply -y {{ kube_version }}
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--config={{ kube_config_dir }}/kubeadm-config.yaml
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--ignore-preflight-errors=all
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--allow-experimental-upgrades
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--allow-release-candidate-upgrades
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--etcd-upgrade=false
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--force
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register: kubeadm_upgrade
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when: inventory_hostname != groups['kube-master']|first
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failed_when:
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- kubeadm_upgrade.rc != 0
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- '"field is immutable" not in kubeadm_upgrade.stderr'
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- kubeadm_upgrade.stdout_lines | length > 1
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notify: Master | restart kubelet
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# FIXME: https://github.com/kubernetes/kubeadm/issues/1318
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- name: kubeadm | scale down coredns replicas to 0 if not using coredns dns_mode
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command: >-
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{{ bin_dir }}/kubectl
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--kubeconfig /etc/kubernetes/admin.conf
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-n kube-system
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scale deployment/coredns --replicas 0
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register: scale_down_coredns
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retries: 6
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delay: 5
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until: scale_down_coredns is succeeded
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run_once: yes
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when:
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- kubeadm_scale_down_coredns_enabled
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- dns_mode not in ['coredns', 'coredns_dual']
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changed_when: false
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