Ansible 面试题与答案

问题 11. What is the purpose of the 'become' keyword in Ansible?

The 'become' keyword is used to execute tasks with escalated privileges, usually by using 'sudo' or 'su'. It is equivalent to 'sudo' in Unix-like systems.

Example:

become: yes

问题 12. Explain Ansible facts.

Ansible facts are pieces of system information collected during playbook execution. They provide details about the target system, such as hardware, network, and OS.

问题 13. How can you execute only a specific task from an Ansible playbook?

You can use the '--tags' option followed by the task tag when running the 'ansible-playbook' command to execute specific tasks.

Example:

ansible-playbook site.yml --tags deploy

问题 14. What is the purpose of the 'notify' keyword in Ansible?

The 'notify' keyword is used to trigger handlers. It specifies a task or a list of tasks to be executed if the associated task results in a change.

Example:

notify: restart apache

问题 15. How can you check the syntax of an Ansible playbook without executing it?

You can use the 'ansible-playbook' command with the '--syntax-check' option to validate the syntax of a playbook without running it.

Example:

ansible-playbook site.yml --syntax-check