ansible facts device check

- hosts: localhost
  gather_facts: true
  tasks:
    - debug:
        msg: Disk nvme0n1 exists.
      when: "'nvme0n1' in ansible_devices.keys()|list"
    - debug:
        msg: Disk sdb does not exist.
      when: "'sdb' not in ansible_devices.keys()|list"

https://docs.ansible.com/ansible/latest/playbook_guide/playbooks_conditionals.html

 

```bash
root@DESKTOP-F4T7TCG:/home/ansible# more disk.yml
---
- name: test disk information check
  hosts: vm
  tasks:
  - name: disk check
    debug:
      msg: "{{ ansible_facts['devices'] }}"
  - name: check True or not
    debug:
      msg: Disk sdb doest not exist
    when: "'sdb' not in ansible_devices.keys()|list"
  - name: check disk not
    copy:
      content: "{{ ansible_facts['devices']['sdb']['size'] }}"
      dest: "/home/{{ansible_fqdn}}-diskinfo.txt"
    delegate_to: localhost
    when: "'sdb' in ansible_devices.keys()| list"

```

 

============

  - name: chel
    shell: |
            echo "
            node_kernel_size(name='{{ ansible_hostname }}')  '{{ ansible_kernel }}'
            node_disk_size(name='{{ ansible_hostname }}')  '{{ ansible_facts.devices.sdb.size }}'
            " >> /home/ansible/info.txt
#      dest: "/home/ansible/{{ansible_fqdn}}-info.txt"
#    delegate_to: localhost
    when: "'sdb' in ansible_devices.keys()| list"

 

=========== prom으로 사용할려면 ========= \"를 앞뒤 추가해줘야한다

 

systemctl restart node_exporter
journalctl -eu node_exporter

 

workshop_student_is_happy{campus="campusX"} 1

curl localhost:9100/metrics
curl -s localhost:9100/metrics | grep workshop

  - name: chel
    shell: |
            echo "
            node_kernel_size{name=\""{{ ansible_hostname }}"\",output=\""{{ ansible_kernel }}"\"} 0
            node_disk_size{name=\""{{ ansible_hostname }}"\",size=\""{{ ansible_facts.devices.sdb.size }}"\"} 0
            " >> /home/ansible/info.txt
#      dest: "/home/ansible/{{ansible_fqdn}}-info.txt"
#    delegate_to: localhost
    when: "'sdb' in ansible_devices.keys()| list"

 

 

==============================================================

----
- name: test disk information check
  hosts: vm
  tasks:
  - name: disk check if yes
    shell: |
         echo "
         node_kernel_size{name=\""{{ ansible_hostname }}"\",output=\""{{ ansible_kernel }}"\",disk=\""{{ ansible_facts.devices.sdb.size}} "\"} 0
         " > /home/ansible/info.txt
#      dest: "/home/ansible/{{ansible_fqdn}}-info.txt"
#    delegate_to: localhost
    when: "'sdb' in ansible_devices.keys()| list"

  - name: disk check if no
    shell: |
         echo "
         node_kernel_size{name=\""{{ ansible_hostname }}"\",output=\""{{ ansible_kernel }}"\",disk=\""0"\"} 0
         " > /home/ansible/info.txt
#      dest: "/home/ansible/{{ansible_fqdn}}-info.txt"
#    delegate_to: localhost
    when: "'sdcxb' not in ansible_devices.keys()| list"                 

 

https://dywang.csie.cyut.edu.tw/dywang/ansible/node132.html