Ansible 查詢 AWS AMI

Question

我正在嘗試從 Ansible 查詢 AWS EC2 AMI，但在遍歷結果時一直遇到錯誤：

- hosts: localhost

  tasks:
   - name: Get AMI
     ec2_ami_facts:
        owner: amazon
        filters:
           architecture: x86_64
           root-device-type: ebs
     register: amis

   - name: return filtered data
     debug:
        msg: "{{ item }}"
     loop: " {{ amis \
        | json_query( 'Images[?Description!=`null`] \
        | [?starts_with(Description,`Amazon Linux`)]' ) \
        }} "

這個想法是返回圖像文檔，然后返回帶有更多過濾的圖像 ID（最終目標是獲取給定描述的最新 ami id）。 但是對於當前的示例，以及我嘗試的任何其他操作，我都會收到此錯誤：

TASK [return filtered data] ****************************************************
fatal: [localhost]: FAILED! => {"msg": "Invalid data passed to 'loop',
 it requires a list, got this instead:   . Hint: If you passed a
 list/dict of just one element, try adding wantlist=True to your lookup
 invocation or use q/query instead of lookup."}

我可以完整地查看“amis”，它看起來不錯，但是我嘗試的任何過濾都失敗了。 正確的方法是什么？

Answer 1

這是有效的，感謝 freenode 上 #ansible 的人們。

- hosts: localhost

  tasks:
   - name: Get AMI
     ec2_ami_facts:
        owner: amazon
        filters:
           architecture: x86_64
           root-device-type: ebs
     register: amis

   - name: return latest AMI
     set_fact:
        my_ami: "{{ amis.images \
            | selectattr('description', 'defined') \
            | selectattr('description', 'match', '^Amazon Linux.*GP2$') \
            | selectattr('description', 'match', '[^(Candidate)]') \
            | sort(attribute='creation_date') \
            | last }} "

   - debug:
        msg: "ami = {{ my_ami | to_nice_yaml }}"

另見此處： https : //bitbucket.org/its-application-delivery/ansible-aws/src/master/ansible/task_find_ami.yml?fileviewer=file-view-default

Answer 2

使用以下動態獲取最新的 AMI。

 --- - name: Find latest AMI ec2_ami_facts: owners: 099720109477 region: "{{ AWS_REGION }}" filters: name: "ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-*" register: findami - name: Sort the latest AMI set_fact: latest_ami: > {{ findami.images | sort(attribute='creation_date') | last }} - name: Launch Instance with latest AMI ec2: instance_type: "{{ INSTANCE_TYPE }}" image: "{{ latest_ami.image_id }}" key_name: "{{ KEY_NAME }}" region: "{{ AWS_REGION }}" group_id: "{{ sg.group_id }}" wait: yes count: "{{ INSTANCES_COUNT }}" vpc_subnet_id: "{{ subnet.subnet.id }}" assign_public_ip: no