5.4.3.2. k8s Ansible 모듈 로컬 테스트

프로세스

1. community.kubernetes 컬렉션을 설치합니다.

   $ ansible-galaxy collection install community.kubernetes

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2. 새 Ansible 기반 Operator 프로젝트를 초기화합니다.

   $ operator-sdk new --type ansible \
       --kind Test1 \
       --api-version test1.example.com/v1alpha1 test1-operator

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   출력 예

   Create test1-operator/tmp/init/galaxy-init.sh
   Create test1-operator/tmp/build/Dockerfile
   Create test1-operator/tmp/build/test-framework/Dockerfile
   Create test1-operator/tmp/build/go-test.sh
   Rendering Ansible Galaxy role [test1-operator/roles/test1]...
   Cleaning up test1-operator/tmp/init
   Create test1-operator/watches.yaml
   Create test1-operator/deploy/rbac.yaml
   Create test1-operator/deploy/crd.yaml
   Create test1-operator/deploy/cr.yaml
   Create test1-operator/deploy/operator.yaml
   Run git init ...
   Initialized empty Git repository in /home/user/go/src/github.com/user/opsdk/test1-operator/.git/
   Run git init done

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   $ cd test1-operator

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3. 원하는 Ansible 논리로 roles/test1/tasks/main.yml 파일을 수정합니다. 이 예제에서는 변수의 스위치로 네임스페이스를 생성하고 삭제합니다.

   - name: set test namespace to "{{ state }}"
     community.kubernetes.k8s:
       api_version: v1
       kind: Namespace
       state: "{{ state }}"
       name: test
     ignore_errors: true 

   1

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   1

   ignore_errors: true 를 설정하면 존재하지 않는 프로젝트를 삭제하는 데 실패하지 않습니다.

4. roles/test1/defaults/main.yml 파일을 수정하여 state 를 기본적으로 present 로 설정합니다.

   state: present

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5. test1 역할을 포함하는 최상위 디렉터리에 Ansible 플레이북 playbook.yml 을 생성합니다.

   - hosts: localhost
     roles:
       - test1

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6. 플레이북을 실행합니다.

   $ ansible-playbook playbook.yml

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   출력 예

    [WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'
   
   PLAY [localhost] ***************************************************************************
   
   PROCEDURE [Gathering Facts] *********************************************************************
   ok: [localhost]
   
   Task [test1 : set test namespace to present]
   changed: [localhost]
   
   PLAY RECAP *********************************************************************************
   localhost                  : ok=2    changed=1    unreachable=0    failed=0

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7. 네임스페이스가 생성되었는지 확인합니다.

   $ oc get namespace

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   출력 예

   NAME          STATUS    AGE
   default       Active    28d
   kube-public   Active    28d
   kube-system   Active    28d
   test          Active    3s

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8. state를 absent로 설정하여 플레이북을 재실행합니다.

   $ ansible-playbook playbook.yml --extra-vars state=absent

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   출력 예

    [WARNING]: provided hosts list is empty, only localhost is available. Note that the implicit localhost does not match 'all'
   
   PLAY [localhost] ***************************************************************************
   
   PROCEDURE [Gathering Facts] *********************************************************************
   ok: [localhost]
   
   Task [test1 : set test namespace to absent]
   changed: [localhost]
   
   PLAY RECAP *********************************************************************************
   localhost                  : ok=2    changed=1    unreachable=0    failed=0

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9. 네임스페이스가 삭제되었는지 확인합니다.

   $ oc get namespace

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   출력 예

   NAME          STATUS    AGE
   default       Active    28d
   kube-public   Active    28d
   kube-system   Active    28d

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