Ansible 파일 마지막 변경 일자 확인하기

킹·2020년 2월 3일

Ansible

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특정 파일의 마지막 변경 일자를 확인하는 방법을 공유합니다.
ad-hoc 과 playbook 각각 방법을 기록하였습니다. 유튜브 바로가기

테스트 환경

Master 1대(Ubuntu 18.04), Child 2대(CentOS7, Debian8)

Ansible 2.9.2

$ cat /etc/ansible/hosts
[child]
182.252.133.71
182.252.133.72

[child:vars]
ansible_user=root
ansible_password=Password123!

시나리오1

child01, child02 /etc/passwd 파일의 마지막 변경 일자를 출력합니다.
/etc/passwd 은 child01, child02에 모두 존재하는 파일 입니다.

ad-hoc

실행명령

$ ansible child -m shell -a 'stat -c "%y" /etc/passwd |cut -f1 -d" "'

결과화면

root@master:/workspace/ansible# ansible child -m shell -a 'stat -c "%y" /etc/passwd |cut -f1 -d" "'
[WARNING]: Platform linux on host 182.252.133.72 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information.

182.252.133.72 | CHANGED | rc=0 >>
2017-08-04

182.252.133.71 | CHANGED | rc=0 >>
2020-02-03

playbook

mtime_file.yml 과 my_filter.py 이 필요합니다.
filter_plugins 디렉토리 하위에 my_filter.py 위치합니다.

├── filter_plugins
│   ├── my_filter.py
│   └── my_filter.pyc
└── mtime_file.yml

$ cat mtime_file.yml

---
- hosts : child
  tasks :
  - name: passwd 파일 변경일 확인하기
    stat: path=/etc/passwd
    register : status_file

  - debug :
      var : status_file.stat.mtime | my_filter
    when : status_file.stat.exists

$ cat ./filter_plugins/my_filter.py

import datetime

def my_filter(arg):
    value = datetime.datetime.utcfromtimestamp(arg).strftime('%Y-%m-%d')
    return value

class FilterModule(object):
    def filters(self):
        return { 'my_filter': my_filter }

실행명령

$ ansible-playbook ./mtime_file.yml

결과화면

root@master:/workspace/ansible# ansible-playbook ./mtime_file.yml

PLAY [child] *****************************************************************************************************************************************************

TASK [Gathering Facts] *******************************************************************************************************************************************
ok: [182.252.133.71]
ok: [182.252.133.72]

TASK [passwd 파일 변경일 확인하기] ****************************************************************************************************************************************
ok: [182.252.133.72]
ok: [182.252.133.71]

TASK [debug] *****************************************************************************************************************************************************
ok: [182.252.133.72] => {
    "status_file.stat.mtime | my_filter": "2017-08-04"
}
ok: [182.252.133.71] => {
    "status_file.stat.mtime | my_filter": "2020-02-03"
}

PLAY RECAP *******************************************************************************************************************************************************
182.252.133.71             : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
182.252.133.72             : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

시나리오2

child01, child02 /etc/passwd.bak 파일의 마지막 변경 일자를 출력합니다.
/etc/passwd.bak 는 child01에만 존재하는 파일 입니다.

ad-hoc

실행명령

$ ansible child -m shell -a 'stat -c "%y" /etc/passwd.bak |cut -f1 -d" "'

결과화면

root@master:/workspace/ansible# ansible child -m shell -a 'stat -c "%y" /etc/passwd.bak |cut -f1 -d" "'
[WARNING]: Platform linux on host 182.252.133.72 is using the discovered Python interpreter at /usr/bin/python, but future installation of another Python
interpreter could change this. See https://docs.ansible.com/ansible/2.9/reference_appendices/interpreter_discovery.html for more information.

182.252.133.72 | CHANGED | rc=0 >>
stat: cannot stat ‘/etc/passwd.bak’: No such file or directory

182.252.133.71 | CHANGED | rc=0 >>
2019-02-12

playbook

mtime_file.yml 과 my_filter.py 이 필요합니다.
filter_plugins 디렉토리 하위에 my_filter.py 위치합니다.

├── filter_plugins
│   ├── my_filter.py
│   └── my_filter.pyc
└── mtime_file.yml

$ cat mtime_file.yml

---
- hosts : child
  tasks :
  - name: passwd.bak 파일 변경일 확인하기
    stat: path=/etc/passwd.bak
    register : status_file

  - debug :
      var : status_file.stat.mtime | my_filter
    when : status_file.stat.exists

$ cat ./filter_plugins/my_filter.py

import datetime

def my_filter(arg):
    value = datetime.datetime.utcfromtimestamp(arg).strftime('%Y-%m-%d')
    return value

class FilterModule(object):
    def filters(self):
        return { 'my_filter': my_filter }

실행명령

$ ansible-playbook ./mtime_file.yml

결과화면

root@master:/workspace/ansible# ansible-playbook ./mtime_file.yml

PLAY [child] *****************************************************************************************************************************************************

TASK [Gathering Facts] *******************************************************************************************************************************************
ok: [182.252.133.72]
ok: [182.252.133.71]

TASK [passwd.bak 파일 변경일 확인하기] ****************************************************************************************************************************************
ok: [182.252.133.72]
ok: [182.252.133.71]

TASK [debug] *****************************************************************************************************************************************************
ok: [182.252.133.71] => {
    "status_file.stat.mtime | my_filter": "2019-02-12"
}
skipping: [182.252.133.72]

PLAY RECAP *******************************************************************************************************************************************************
182.252.133.71             : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
182.252.133.72             : ok=2    changed=0    unreachable=0    failed=0    skipped=1    rescued=0    ignored=0