使用 ansible 從 cat /etc/fstab 中查找掛載點

Question

我將創建一個劇本，檢查與vars: whitelist相關的fstype:ext的Mount_points ：白名單，因此它將遍歷 vars 以檢查 mount_point 是否存在，如果它存在，則輸出應該與此類似，否則將被忽略

/ /boot /home /opt /var /var/opt /var/tmp /var/log /var/log/audit這是我使用'xfs'的劇本，因為我的機器中沒有ext。 你能建議更有效的方法來達到預期的結果嗎

  - hosts: all
    vars:
      whitelist:
        - '/'
        - '/boot'
        - '/home'
        - '/opt'
        - '/var'
        - '/bin'
        - '/usr'  

    tasks:
      - set_fact:
          mount_point: "{{ansible_facts.mounts | selectattr('fstype', 'match', '^xf+') | map(attribute='mount')}}"
      - debug:
          var: mount_point

        loop: "{{ whitelist }}"
        when: item in mount_point

TASK [set_fact] **************************************************************************************************************
ok: [ansible2]
ok: [ansible3]

TASK [debug] *****************************************************************************************************************
ok: [ansible2] => (item=/) => {
    "msg": [
        "/",
        "/boot"
    ]
}
ok: [ansible2] => (item=/boot) => {
    "msg": [
        "/",
        "/boot"
    ]
}
skipping: [ansible2] => (item=/home)
skipping: [ansible2] => (item=/opt)
skipping: [ansible2] => (item=/var)
skipping: [ansible2] => (item=/bin)
skipping: [ansible2] => (item=/usr)
ok: [ansible3] => (item=/) => {
    "msg": [
        "/boot",
        "/"
    ]
}
ok: [ansible3] => (item=/boot) => {
    "msg": [
        "/boot",
        "/"
    ]
}
skipping: [ansible3] => (item=/home)
skipping: [ansible3] => (item=/opt)
skipping: [ansible3] => (item=/var)
skipping: [ansible3] => (item=/bin)
skipping: [ansible3] => (item=/usr)

PLAY RECAP *******************************************************************************************************************
ansible2                   : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0
ansible3                   : ok=3    changed=0    unreachable=0    failed=0    skipped=0    rescued=0    ignored=0

Answer 1

這有望滿足您的需求：

    - name: List all mount points on which an ext2/ext3/ext4 file system is mounted
      ansible.builtin.debug:
        msg: "{{ansible_facts.mounts | selectattr('fstype', 'in', ['ext2', 'ext3', 'ext4']) | map(attribute='mount')}}"

首先，它使用selectattr僅保留fstype為ext2 、 ext3或ext4之一的那些掛載。 然后它使用map從每個條目中提取掛載點。 結果是一個列表，例如["/", "/usr", "/var"] 。