始终在特定主机上运行播放，并使用 --limit 选项

Question

$ 猫库存

[dbservers]
DB1 ansible_host=10.252.22.163

[webservers]
WS1 ansible_host=10.252.22.163

[common]
CS1 ansible_host=10.252.22.163

$ 猫 pb.yml

- name: db and web 
  hosts:
    - dbservers
    - webservers 
  tasks:
    - name: Run task
      debug:
        msg: 'Running on all dbservers and webserver'

$ 猫 common.yml

- name: common task should run on common host only(that too only once)
  hosts:
    - common 
  tasks:
    - name: Run common task
      debug:
        msg: 'Running common task'

$ cat install.yml

- import_playbook: "pb.yml"

- import_playbook: "common.yml"

每次运行以下任何命令时，是否可以在 CS1 主机上运行普通游戏（仅一次）？

> ansible-playbook -i inventory install.yml --limit 'DB1'
> ansible-playbook -i inventory install.yml --limit 'WS1'

Answer 1

这是一种可能的解决方案：

库存

[dbservers]
DB1 ansible_host=localhost ansible_connection=local host_key_checking=false
CS1 ansible_host=localhost ansible_connection=local host_key_checking=false

[webservers]
WS1 ansible_host=localhost ansible_connection=local host_key_checking=false
CS1 ansible_host=localhost ansible_connection=local host_key_checking=false

[common]
CS1 ansible_host=localhost ansible_connection=local host_key_checking=false

安装.yml

- name: Install <todo more info>
  hosts: "{{ target_host }}"
  tasks:
    - import_tasks: "pb.yml"
      when: inventory_hostname not in groups['common']

    - name: common tasks
      import_tasks: "common.yml"
      when: inventory_hostname in groups['common']

common.yml

- name: Run common task COMMON
  debug:
    msg: 'Running common task'

pb.yml

- name: Run task PB
  debug:
    msg: 'Running on all dbservers and webserver'

运行命令

$ ansible-playbook -i inventory install.yml -e target_host=dbservers
$ ansible-playbook -i inventory install.yml -e target_host=webservers