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ansible ：任务输出重定向到下一个任务作为输入

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ansible ：任务输出重定向到下一个任务作为输入

嗨，我能够在下面的剧本中获得所需的输出，其中我使用了以下 2 个任务aws-create-rds，aws-create-route53-record

---
# Playbook for creating aws rds instance and then creating route53 dns record.

- name: setup aws-rds-instances
  hosts: localhost
  roles:
     - aws-create-rds

任务定义如下aws-create-rds。

---

- name: create an rds instance
  rds:
    command: create
    aws_access_key: "{{ aws_create_rds.access_key }}"
    aws_secret_key: "{{ aws_create_rds.secret_key }}"
    db_name: "{{ aws_create_rds.db_name }}"
    instance_name: "{{ aws_create_rds.name }}"
    db_engine: "{{ aws_create_rds.db_engine }}"
    size: "{{ aws_create_rds.db_size }}"
    instance_type: "{{ aws_create_rds.instance_type }}"
    username: "{{ aws_create_rds.username }}"
    password: "{{ aws_create_rds.password }}"
    subnet: "{{ aws_create_rds.subnet }}"
    region: "{{ aws_create_rds.region }}"
    zone: "{{ aws_create_rds.zone }}"
    publicly_accessible: "{{ aws_create_rds.access }}"
    backup_retention: "{{ aws_create_rds.retention }}"
    vpc_security_groups: "{{ aws_create_rds.aws_sg_name }}"
    port: "{{ aws_create_rds.port }}"
    wait: yes
    wait_timeout: 900
    tags:
      created_by: ansible
  register: rds



 - name: Create a route53 record for RDS instance.
      route53:
        state: present
        aws_access_key: "{{ aws_create_route53_record.access_key }}"
        aws_secret_key: "{{ aws_create_route53_record.secret_key }}"
        zone: "{{ aws_create_route53_record.zone }}"
        hosted_zone_id: "{{ aws_create_route53_record.id }}"
        type:  "{{ aws_create_route53_record.type }}"
        value: "{{ rds.instance.endpoint }}"
        record: "{{  aws_create_route53_record.record }}"
        private_zone: "{{  aws_create_route53_record.private_zone }}"
        ttl: 30

现在，由于此任务中有 2 个任务，我希望将它们拆分成 2 个不同的角色。我希望将来在 ansible 中将它们用作独立角色aws-create-rds，例如第 1 个角色和第 2 个角色aws-create-route53-record ，但是我不确定如何传递endpoint来自aws-create-rds任务的值并将其传递给dns 记录aws-create-route53-record并将其用作valuednsroute53记录。我已检查 rds 模块文档，其中没有端点的返回值。此外，还有 2 个用例，如下所示。

 1. route53 record value can be passed through group_vars OR
 2. route53 record value can be passed from any previous ansible task executed.

我想处理aws-create-route53-record任务中的两种情况。任何线索都可以实现这一点。环境变量或任何东西。提前致谢。

答案1

为了实现这一点，我编写了 2 个不同的角色/任务并在剧本中调用它们。以下是任务。第一个是 aws-create-rds

- name: create an rds instance
  rds:
    command: create
    aws_access_key: "{{ aws_create_rds.access_key }}"
    aws_secret_key: "{{ aws_create_rds.secret_key }}"
    db_name: "{{ aws_create_rds.db_name }}"
    instance_name: "{{ aws_create_rds.name }}"
    db_engine: "{{ aws_create_rds.db_engine }}"
    size: "{{ aws_create_rds.db_size }}"
    instance_type: "{{ aws_create_rds.instance_type }}"
    username: "{{ aws_create_rds.username }}"
    password: "{{ aws_create_rds.password }}"
    subnet: "{{ aws_create_rds.subnet }}"
    region: "{{ aws_create_rds.region }}"
    publicly_accessible: "{{ aws_create_rds.publicly_access }}"
    backup_retention: "{{ aws_create_rds.retention }}"
    vpc_security_groups: "{{ aws_create_rds.aws_sg_name }}"
    multi_zone: "{{ aws_create_rds.multi_zone }}"
    port: "{{ aws_create_rds.port }}"
    wait: yes
    wait_timeout: 900
    tags:
      created_by: ansible
  register: rds

- name: Assigning rds endpoint value to variable.
  set_fact:
    endpoint_host: "{{ rds.instance.endpoint }}"

第二个任务是 aws-create-route53-record。

---
-
  name: "Set facts of record value"
  set_fact:
    record_value: "{{ aws_create_route53_record.value }}"
-
  name: "If record value not present, Look for endpoint-host variable"
  set_fact:
    record_value: "{{ endpoint_host }}"
  when: "aws_create_route53_record.value == \"\""
-
  name: "Create a route53 record for RDS instance."
  route53:
    aws_access_key: "{{ aws_create_route53_record.access_key }}"
    aws_secret_key: "{{ aws_create_route53_record.secret_key }}"
    hosted_zone_id: "{{ aws_create_route53_record.hosted_zone_id }}"
    private_zone: "{{  aws_create_route53_record.private_zone }}"
    record: "{{  aws_create_route53_record.record }}"
    state: present
    ttl: 30
    type: "{{ aws_create_route53_record.type }}"
    value: "{{ record_value }}"
    zone: "{{ aws_create_route53_record.zone }}"

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