kubeasz/tools/19.addetcd.yml

# Note: this playbook cann't run independently
# Usage: easzctl add-etcd 1.1.1.1

# add new-etcd node, one at a time
- hosts: "{{ NODE_TO_ADD }}"
  tasks:
  - name: add a new etcd member
    shell: "ETCDCTL_API=3 {{ bin_dir }}/etcdctl member add {{ NODE_NAME }} --peer-urls=https://{{ NODE_TO_ADD }}:2380"
    # new etcd node will be groups.etcd[0]
    delegate_to: "{{ groups.etcd[1] }}"

# start the new-etcd node
- hosts: "{{ NODE_TO_ADD }}"
  vars:
    CLUSTER_STATE: existing
  roles:
  - { role: chrony, when: "groups['chrony']|length > 0" }
  - prepare
  - etcd

# restart the original etcd cluster with the new configuration
- hosts: etcd
  vars:
    CLUSTER_STATE: existing
  roles:
  - etcd