13.6. 使用 Podman 生成 YAML 文件

您可以使用 podman generate kube 命令生成 Kubernetes YAML 文件。

先决条件

  • container-tools 元数据包已安装。
  • 名为 wordpresspod 的 pod 已创建。详情请参阅 创建 pod 一节。

流程

  1. 列出与其关联的所有 pod 和容器： 

    $ podman ps --pod -a
CONTAINER ID  IMAGE                               COMMAND               CREATED                 STATUS                     PORTS                 NAMES               POD ID        PODNAME
9ea56f771915  k8s.gcr.io/pause:3.5                                      Less than a second ago  Up Less than a second ago  0.0.0.0:8080->80/tcp  4b7f054a6f01-infra  4b7f054a6f01  wordpresspod
60e8dbbabac5  localhost/mariadb-conf:latest       mariadbd              Less than a second ago  Up Less than a second ago  0.0.0.0:8080->80/tcp  mydb                4b7f054a6f01  wordpresspod
045d3d506e50  docker.io/library/wordpress:latest  apache2-foregroun...  Less than a second ago  Up Less than a second ago  0.0.0.0:8080->80/tcp  myweb               4b7f054a6f01  wordpresspod

  2. 使用 pod 名称或 ID 来生成 Kubernetes YAML 文件： 

    $ podman generate kube wordpresspod >> wordpresspod.yaml

验证

  • 显示 wordpresspod.yaml 文件： 

    $ cat wordpresspod.yaml
...
apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: "2021-12-09T15:09:30Z"
  labels:
    app: wordpresspod
  name: wordpresspod
spec:
  containers:
  - args:
        value: podman
      - name: MYSQL_PASSWORD
        value: "1234"
      - name: MYSQL_MAJOR
        value: "8.0"
      - name: MYSQL_VERSION
        value: 8.0.27-1debian10
      - name: MYSQL_ROOT_PASSWORD
        value: "1234"
      - name: MYSQL_DATABASE
        value: mywpdb
      - name: MYSQL_USER
        value: mywpuser
        image: mariadb
            name: mydb
            ports:
            - containerPort: 80
              hostPort: 8080
              protocol: TCP
  - args:
    - name: WORDPRESS_DB_NAME
      value: mywpdb
    - name: WORDPRESS_DB_PASSWORD
      value: "1234"
    - name: WORDPRESS_DB_HOST
      value: 127.0.0.1
    - name: WORDPRESS_DB_USER
      value: mywpuser
      image: docker.io/library/wordpress:latest
      name: myweb

其他资源