1.3. 使用清单示例

流程

1. 运行以下命令来创建 BusyBox 清单文件：

   1. 定义目录位置：

      $ MANIFEST_DIR=/etc/microshift/manifests

   2. 创建目录：

      $ sudo mkdir -p ${MANIFEST_DIR}

   3. 将 YAML 文件放在目录中：

      sudo tee ${MANIFEST_DIR}/busybox.yaml &>/dev/null <<EOF
      apiVersion: v1
      kind: Namespace
      metadata:
        name: busybox
      ---
      apiVersion: apps/v1
      kind: Deployment
      metadata:
        name: busybox
        namespace: busybox-deployment
      spec:
        selector:
          matchLabels:
            app: busybox
        template:
          metadata:
            labels:
              app: busybox
          spec:
            containers:
            - name: busybox
              image: BUSYBOX_IMAGE
              command: [ "/bin/sh", "-c", "while true ; do date; sleep 3600; done;" ]
      EOF

2. 接下来，运行以下命令来创建 kustomize 清单文件：

   1. 将 YAML 文件放在目录中：

      sudo tee ${MANIFEST_DIR}/kustomization.yaml &>/dev/null <<EOF
      apiVersion: kustomize.config.k8s.io/v1beta1
      kind: Kustomization
      namespace: busybox
      resources:
        - busybox.yaml
      images:
        - name: BUSYBOX_IMAGE
          newName: busybox:1.35
      EOF

3. 运行以下命令重启 MicroShift 以应用清单：

   $ sudo systemctl restart microshift

4. 运行以下命令应用清单并启动 busybox pod：

   $ oc get pods -n busybox