kubespray/roles/etcd/tasks/install_host.yml

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---
- name: Install | Copy etcdctl and etcd binary from docker container
command: sh -c "{{ docker_bin_dir }}/docker rm -f etcdctl-binarycopy;
{{ docker_bin_dir }}/docker create --name etcdctl-binarycopy {{ etcd_image_repo }}:{{ etcd_image_tag }} &&
{{ docker_bin_dir }}/docker cp etcdctl-binarycopy:/usr/local/bin/etcdctl {{ bin_dir }}/etcdctl &&
{{ docker_bin_dir }}/docker cp etcdctl-binarycopy:/usr/local/bin/etcd {{ bin_dir }}/etcd &&
{{ docker_bin_dir }}/docker rm -f etcdctl-binarycopy"
register: etcd_task_result
until: etcd_task_result.rc == 0
retries: 4
delay: "{{ retry_stagger | random + 3 }}"
changed_when: false