RHCE8 练习题:生成硬件报告
创建一个名为 /home/student/ansible/hwreport.yml 的playbook,它将在所有受管节点上生成含有以下信息的输出文件 /root/hwreport.txt :
- 清单主机名称
- 以
MB 表示的总内存大小
BIOS 版本
- 磁盘设备
vda 的大小
- 磁盘设备
vdb 的大小
- 输出文件中的每一行格式为
key=value
您的playbook应当:
- 从
http://materials.example.com/cd/exam_rhce8/hwreport.empty 下载文件,并将它保存为 /root/hwreport.txt
- 硬件报告
/root/hwreport.txt 中应使用相应的值
- 如何硬件项不存在,相关的值应设为
NONE
Answer
vim /home/student/ansible/hwreport.yml
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--- - name: create hwreport hosts: all vars: hw_all: - hw_name: HOSTNAME hW_cont: "{{ ansible_hostname | default('NONE',true) }}" - hw_name: BIOS_VERSION hW_cont: "{{ ansible_bios_version | default('NONE',true) }}" - hw_name: MEMORY hW_cont: "{{ ansible_memtotal_mb | default('NONE',true) }}" - hw_name: VDASIZE hW_cont: "{{ ansible_devices.vda.size | default('NONE',true) }}" - hw_name: VDBSIZE hW_cont: "{{ ansible_devices.vdb.size | default('NONE',true) }}" tasks: - name: download file get_url: url: http://materials.example.com/cd/exam_rhce8/hwreport.empty dest: /root/hwreport.txt - name: modify hwreport file lineinfile: path: /root/hwreport.txt regexp: "^{{item.hw_name}}" line: "{{ item.hw_name }}={{ item.hw_cont }}" loop: "{{ hw_all }}"
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ansible-playbook hwreport.yml
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验证
ansible all -a 'cat /root/hwreport.txt'
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