Ansible 面试题与答案
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问题 16. What is the purpose of the 'register' keyword in Ansible?
The 'register' keyword is used to capture the output of a task and store it in a variable. This variable can be used later in the playbook.
Example:
register: result
问题 17. How can you limit the execution of Ansible tasks to a specific set of hosts?
You can use the '--limit' option followed by the pattern of hosts when running the 'ansible-playbook' command to limit the execution to specific hosts.
Example:
ansible-playbook site.yml --limit web_servers
问题 18. Explain Ansible dynamic inventories.
Dynamic inventories in Ansible are scripts or programs that generate inventory information dynamically. They are useful in dynamic or cloud environments.
问题 19. How can you use loops in Ansible playbooks?
Ansible supports loops using the 'with_items' keyword. It allows tasks to be repeated for each item in a list.
Example:
with_items:
- item1
- item2
问题 20. What is the purpose of the 'when' keyword in Ansible?
The 'when' keyword is a conditional statement in Ansible. It is used to execute a task based on a specified condition, improving playbook flexibility.
Example:
when: ansible_os_family == 'Debian'
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