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Ansible 列表变量未定义

tag-icon • tag-icon ansible ansible-playbook
Ansible 列表变量未定义

我有一个剧本，它运行自定义任务来设置 nginx vhost：

  tasks:
    - include: tasks/tweaks.yml

在此剧本中，使用了以下内容var_files：

  vars_files:
    - ../config.yml

我config.yml有以下包含虚拟主机信息的列表：

nginx_hosts_custom:
  - server_name: "mytest.dev"
    root: /drupal/www/mytest
    is_php: true
    common_config: true
    remote_host: "12.34.56.78"
    remote_root: "/web/ubuntu/www/mytest/public"
    pem: "mytest.pem"

我有以下tweaks.yml内容：

- name: "Extra Nginx hosts for the Drupal sites"
  template:
    src: ../templates/nginx-vhost.conf.j2
    dest: "{{ nginx_vhost_path }}/{{ item.server_name.split(' ')[0] }}.conf"
    force: yes
    owner: root
    group: root
    mode: 0644
  with_items: nginx_hosts_custom
  notify: restart nginx
  when: drupalvm_webserver == 'nginx'

这曾经运行得很好，但现在运行该规定时我收到以下错误：

fatal: [owenvm]: FAILED! => {"failed": true, "msg": "the field 'args' has an invalid value, which appears to include a variable that is undefined. The error was: 'unicode object' has no attribute 'server_name'\n\nThe error appears to have been in /tasks/tweaks.yml': line 20, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n\n- name: \"Extra Nginx hosts for the Drupal sites\"\n  ^ here\n"}

因此看起来该变量server_name没有被拾取——有人可以提出解决办法吗？

答案1

中的裸变量with_items，例如with_items: nginx_hosts_custom自 Ansible 2.0 以来已被弃用，并且自 2.2 以来完全不受支持。

你应该使用with_items: "{{ nginx_hosts_custom }}"

答案2

在tweaks.yml

- name: "Extra Nginx hosts for the Drupal sites"
  template:
    src: ../templates/nginx-vhost.conf.j2
    dest: "{{ nginx_vhost_path }}/{{ item['server_name'].split(' ') | first }}.conf"
    force: yes
    owner: root
    group: root
    mode: 0644
  with_items: nginx_hosts_custom
  notify: restart nginx
  when: drupalvm_webserver == 'nginx'

此外，模板通常知道要查找的内容../templates（至少在使用角色时）。您确定需要提供相对路径吗？坚持使用模板文件名可能就足够了。

根据 Ansible 版本，with_items可能需要设置为'{{ nginx_host_custom }}'。尽管根据您的错误消息，这不是我们的情况。

我还建议确保nginx_hosts_custom在你的条款中定义when，例如：

when: drupal_webserver == 'nginx' and nginx_hosts_custom is defined and nginx_hosts_custom != False

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