使用自定义位置

时间:2018-05-30 16:30:34

标签: ansible ansible-template

我正在尝试创建ansible角色以使用ansible生成kubernetes部署。我希望所有自定义都存储在var文件中,并在group_vars和host_vars加载期间自动加载。我最终得到了以下嵌套的文件结构:

group_vars/my_group.yml

applications:
  application_foo: "{{ lookup('template', inventory_dir + '/applications/application_foo.yml') | from_yaml }}"

applications/application_foo.yml

deployments:
  application_foo:
    deployment:
      {{ lookup('template', inventory_dir + '/deployment_vars/deployment_foo.yml')  | to_nice_yaml | indent(6)}}
    replicas: 1

deployment_vars/deployment_foo.yml

containers:
  conteiner_bar:
    container:
      {{ lookup('template',inventory_dir + '/container_vars/container_bar.yml') | to_nice_yaml | indent(6) }}
  container_baz:
    container:
      {{ lookup('template',inventory_dir + '/container_vars/container_baz.yml') | to_nice_yaml | indent(6) }}

container_vars/container_bar.yml

container_vars/container_baz.yml

image_url: "https://example.com/image_bar"
cpu_requests: "1"
memory_requests: "512Mi"
cpu_limit: "2"
memory_limit: "1024Mi"
readinessProbe:
  exec:
   command:
    - "sh"
    - "-c"
    - "true"

playbooks/test-playbook.yml

- hosts: my_group
  gather_facts: False
  tasks:
    - debug:
        msg: "{{ applications['application_foo']['deployments']['application_foo']['deployment']['containers']['container_bar']['cpu_requests'] }}"
      delegate_to: localhost

当我运行playbook时,它抱怨部署var是str类型,因此不能有子对象:

fatal: [localhost]: FAILED! => {

        "msg": "The task includes an option with an undefined variable. The error was: 'str object' has no attribute 'containers'\n\nThe error appears to have been in '/tmp/so_question/playbooks/test-playbook.yml': line 4, column 7, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n  tasks:\n    - debug:\n      ^ here\n"
    }

我希望在其他应用程序需要容器或部署的情况下可以重复使用图层,因此不希望将所有内容放在一个文件中。

有关如何解决此问题或如何以其他方式实现相同嵌套加载的任何建议?

UPD:当我在playbook中剪切字符串以结束部署时(如此msg: "{{ applications['application_foo']['deployments']['application_foo']['deployment'] }}"),它给出了以下行,换行后的行看起来不像有效的yaml:

containers:
  conteiner_bar:
    container:
      \"image_url: \\\"https://example.com/image_bar\\\"\
cpu_requests: \\\"1\\\"\
memory_requests:\\
          \\ \\\"512Mi\\\"\
cpu_limit: \\\"2\\\"\
memory_limit: \\\"1024Mi\\\"\
readinessProbe:\
  exec:\
\\
          \\   command:\
    - \\\"sh\\\"\
    - \\\"-c\\\"\
    - \\\"true\\\"\
\"
  container_baz:
    container:
      \"image_url: \\\"https://example.com/image_bar\\\"\
cpu_requests: \\\"1\\\"\
memory_requests:\\
          \\ \\\"512Mi\\\"\
cpu_limit: \\\"2\\\"\
memory_limit: \\\"1024Mi\\\"\
readinessProbe:\
  exec:\
\\
          \\   command:\
    - \\\"sh\\\"\
    - \\\"-c\\\"\
    - \\\"true\\\"\
\"

我想知道为什么缩进过滤器不会缩进所有行。我正确使用它吗?

1 个答案:

答案 0 :(得分:0)

结束以下解决方法:将包含默认值的所有文件移动到group_vars / all以自动加载它们并使用vars查找嵌套:

$ find group_vars/
group_vars/
group_vars/all
group_vars/all/10_container_bar.yml
group_vars/all/20_deployment_foo.yml
group_vars/all/30_application_foo.yml
group_vars/all/10_container_baz.yml
group_vars/my_group.yml

group_vars/my_group.yml

applications:
  application_foo: "{{ lookup('vars', 'defaults_application_application_foo') }}"

group_vars/all/30_application_foo.yml

defaults_application_application_foo:
  deployments:
    application_foo:
      deployment: "{{ lookup('vars', 'defaults_deployment_deployment_foo') }}"
      replicas: 1

等等......

仍然不清楚为什么模板的东西不起作用。将这个问题保持开放。