kubespray/roles/kubernetes/node/tasks/install_host.yml

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---
- name: install | Compare host kubelet with hyperkube container
command: "{{ docker_bin_dir }}/docker run --rm -v {{ bin_dir }}:/systembindir {{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} /usr/bin/cmp /hyperkube /systembindir/kubelet"
register: kubelet_task_compare_result
until: kubelet_task_compare_result.rc in [0,1,2]
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
changed_when: false
failed_when: "kubelet_task_compare_result.rc not in [0,1,2]"
tags:
- hyperkube
- upgrade
- name: install | Copy kubelet from hyperkube container
command: "{{ docker_bin_dir }}/docker run --rm -v {{ bin_dir }}:/systembindir {{ hyperkube_image_repo }}:{{ hyperkube_image_tag }} /bin/cp -f /hyperkube /systembindir/kubelet"
when: kubelet_task_compare_result.rc != 0
register: kubelet_task_result
until: kubelet_task_result.rc == 0
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
tags:
- hyperkube
- upgrade
notify: restart kubelet
- name: install | Copy socat wrapper for Container Linux
command: "{{ docker_bin_dir }}/docker run --rm -v {{ bin_dir }}:/opt/bin {{ install_socat_image_repo }}:{{ install_socat_image_tag }}"
args:
creates: "{{ bin_dir }}/socat"
when: ansible_os_family in ['CoreOS', 'Container Linux by CoreOS']