如何忽略ansible中的警告

Question

我在编写剧本时一直试图忽略警告，场景是我执行此 virt-host-validate qemu 并且它抛出一个警告，如下所示。

root@n0:~/playbook_promenade# virt-host-validate 
QEMU: Checking for hardware virtualization : PASS
QEMU: Checking if device /dev/kvm exists :PASS
QEMU: Checking if device /dev/kvm is accessible : PASS
QEMU: Checking if device /dev/vhost-net exists : PASS
QEMU: Checking if device /dev/net/tun exists : PASS
QEMU: Checking for cgroup 'memory' controller support : PASS
QEMU: Checking for cgroup 'memory' controller mount-point : PASS
QEMU: Checking for cgroup 'cpu' controller support : PASS
QEMU: Checking for cgroup 'cpu' controller mount-point: PASS
QEMU: Checking for cgroup 'cpuacct' controller support : PASS
QEMU: Checking for cgroup 'cpuacct' controller mount-point : PASS
QEMU: Checking for cgroup 'devices' controller support : PASS
QEMU: Checking for cgroup 'devices' controller mount-point : PASS
QEMU: Checking for cgroup 'net_cls' controller support : PASS
QEMU: Checking for cgroup 'net_cls' controller mount-point : PASS
QEMU: Checking for cgroup 'blkio' controller support : PASS
QEMU: Checking for cgroup 'blkio' controller mount-point : PASS
QEMU: Checking for device assignment IOMMU support  : WARN (No ACPI DMAR table found, IOMMU either disabled in BIOS or not supported by this hardware platform)`

我写的剧本如下。

`- hosts: localhost
   sudo: yes
   tasks:
    - name: Check if Host supports Virtualization.
      command: virt-host-validate qemu 
      ignore_errors: yes
      failed_when: false
      changed_when: false
      register: host_status
    - debug:
       msg: "status: {{host_status.stdout}}"`

现在令人担忧的是，除了警告之外，是否还有任何其他任务失败，因为我们正在使用 ignore_errors: yes 谁能指导我如何解决它？？提前致谢。

Answer 1

我可以用这个来解决它。

  tasks:
   - name: Check if Host supports Virtualization.
     command: virt-host-validate qemu
     register: command_result
     failed_when:
       - "'FAIL' in command_result.stderr"

Answer 2

您也可以运行它作为整个角色的 post 任务，因此该角色中的每个任务都将被验证，并且只有当它具有非零 return 代码或包含 "error" 或 "fail" 的 STDERR - 任务将失败。

在所有 command/shell 任务中，注册输出：

- name: A shell task
  shell: |
    # your commands ...
  register: out

然后在 main 角色上，添加一个 post-task，它将在每个任务后检查错误：

- name: A role of shell/command tasks
  roles:
  - role: ...
  ...
  post_tasks:
  - name: Checking if command failed, or if stderr contains errors/failures
    fail: msg={{ out.stderr.split('\n') }}
    when: out is defined and out.stderr is defined and (out.stderr | lower | regex_search('error|fail') or out.rc != 0)

如何忽略ansible中的警告

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