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Ansible 错误：有问题的行似乎是：

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Ansible 错误：有问题的行似乎是：

我在 Ansible 中收到如下代码错误。请就此提供意见。

ERROR! We were unable to read either as JSON nor YAML, 
these are the errors we got from each:
JSON: Expecting value: line 1 column 1 (char 0)

Syntax Error while loading YAML.
  did not find expected key

The error appears to be in '/root/ansible_code/roles/sample_exercise/tasks/main.yml': 
                           line 10, column 6,
but may be elsewhere in the file depending 
on the exact syntax problem.

The offending line appears to be:

    oracle_home: "{{ oracle_home.stdout }}"
     oracle_sid: "{{ dbname }}"
     ^ here
We could be wrong, but this one looks like it might be an issue with
missing quotes. Always quote template expression brackets when they
start a value. For instance:

    with_items:
      - {{ foo }}

Should be written as:

    with_items:
      - "{{ foo }}"

代码 -

#- hosts: localhost
- hosts: 192.168.56.10

- debug:
    msg: "{{ oracle_home.stdout }}"

- set_fact:
    oracle_home: "{{ oracle_home.stdout }}"
     oracle_sid: "{{ dbname }}"

- name: List PDB of given CDB
shell:
 cmd: |
    $ORACLE_HOME/bin/sqlplus / as sysdba <<EOF
    select instance_name, status from v$instance
    EOF
 environment:
        ORACLE_HOME: "{{ oracle_home }}"
        ORACLE_SID: "{{ oracle_sid }}"
 register: pdb

- name: List PDB
 debug:
   msg: "{{ pdb.stdout_lines|replace('\t', '') }}"

答案1

我在 Ansible 中收到如下代码错误。请提供建议。

这只是由于缩进不正确而导致的语法错误。可以使用如下简单示例重现此错误

- hosts: localhost
  become: false
  gather_facts: false

  tasks:

  - set_fact:
      oracle_home: 'get_assigned'
       oracle_sid: 'will_cause_syntax_error'

输出结果为

ERROR! We were unable to read either as JSON nor YAML, these are the errors we got from each:
JSON: No JSON object could be decoded

Syntax Error while loading YAML.
  did not find expected key

The error appears to be in '/home/user/test/main.yml': line 9, column 8, but may
be elsewhere in the file depending on the exact syntax problem.

The offending line appears to be:

      oracle_home: 'get_assigned'
       oracle_sid: 'will_cause_syntax_error'
       ^ here

正确的语法如下

  - set_fact:
      oracle_home: 'get_assigned'
      oracle_sid: 'also_gets_assigned'

答案2

作为已经回答：您的错误很可能是剧本中的语法错误。在学习和使用 Ansible 时，有意义的空格和混乱的编码/格式很难融为一体。

在剧本执行期间，与其依靠 Ansible 错误消息来查找（语法）错误，不如使用类似ansible-lint 运行之前ansible-playbook检查你的剧本和 yaml 文件是否存在语法错误和常见陷阱。

https://ansible.readthedocs.io/projects/lint/

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