Ansible

ansble で 1 回だけ実行する

- name: Check hoge command exists
  shell: type hoge
  run_once: true
  check_mode: false
  changed_when: false

set_fact でリストを作成する

https://stackoverflow.com/questions/29399581/using-set-facts-and-with-items-together-in-ansible

- name: Get hoge
  set_fact:
    colo: "{{ item | unique }}"
  with_items: "{{ ansible_play_hosts }}"
  register: hoge_result

ansible で nic interface のリストを作成する

- name: Get physical interfaces names
  command: find /sys/class/net -type l -not -lname '*virtual*' -printf '%f\n'
  register: physical_interfaces_cmd
  changed_when: false
  check_mode: false

ホストを除外する

[ios]
ios1 ansible_host=10.0.1.254
ios2 ansible_host=10.0.2.254
ios3 ansible_host=10.0.3.254

$ ansible-playbook -i inventory.ini  ios_show.yml -l '!ios2' --list-hosts

playbook: ios_show.yml

  play #1 (ios): ios    TAGS: []
    pattern: ['ios']
    hosts (2):
      ios3
      ios1

Backlinks

• infrastructure as code