2.4.2. 署名の検証設定の確認

マシン設定をクラスターに適用すると、Machine Config Controller は新規の MachineConfig オブジェクトを検出し、新規の rendered-worker-<hash> バージョンを生成します。

前提条件

  • マシン設定ファイルを使用して署名の検証を有効にしている。

手順

  1. コマンドラインで以下のコマンドを実行し、必要なワーカーの情報を表示します。

    $ oc describe machineconfigpool/worker

    初期ワーカー監視の出力例

    Name:         worker
    Namespace:
    Labels:       machineconfiguration.openshift.io/mco-built-in=
    Annotations:  <none>
    API Version:  machineconfiguration.openshift.io/v1
    Kind:         MachineConfigPool
    Metadata:
      Creation Timestamp:  2019-12-19T02:02:12Z
      Generation:          3
      Resource Version:    16229
      Self Link:           /apis/machineconfiguration.openshift.io/v1/machineconfigpools/worker
      UID:                 92697796-2203-11ea-b48c-fa163e3940e5
    Spec:
      Configuration:
        Name:  rendered-worker-f6819366eb455a401c42f8d96ab25c02
        Source:
          API Version:  machineconfiguration.openshift.io/v1
          Kind:         MachineConfig
          Name:         00-worker
          API Version:  machineconfiguration.openshift.io/v1
          Kind:         MachineConfig
          Name:         01-worker-container-runtime
          API Version:  machineconfiguration.openshift.io/v1
          Kind:         MachineConfig
          Name:         01-worker-kubelet
          API Version:  machineconfiguration.openshift.io/v1
          Kind:         MachineConfig
          Name:         51-worker-rh-registry-trust
          API Version:  machineconfiguration.openshift.io/v1
          Kind:         MachineConfig
          Name:         99-worker-92697796-2203-11ea-b48c-fa163e3940e5-registries
          API Version:  machineconfiguration.openshift.io/v1
          Kind:         MachineConfig
          Name:         99-worker-ssh
      Machine Config Selector:
        Match Labels:
          machineconfiguration.openshift.io/role:  worker
      Node Selector:
        Match Labels:
          node-role.kubernetes.io/worker:
      Paused:                              false
    Status:
      Conditions:
        Last Transition Time:  2019-12-19T02:03:27Z
        Message:
        Reason:
        Status:                False
        Type:                  RenderDegraded
        Last Transition Time:  2019-12-19T02:03:43Z
        Message:
        Reason:
        Status:                False
        Type:                  NodeDegraded
        Last Transition Time:  2019-12-19T02:03:43Z
        Message:
        Reason:
        Status:                False
        Type:                  Degraded
        Last Transition Time:  2019-12-19T02:28:23Z
        Message:
        Reason:
        Status:                False
        Type:                  Updated
        Last Transition Time:  2019-12-19T02:28:23Z
        Message:               All nodes are updating to rendered-worker-f6819366eb455a401c42f8d96ab25c02
        Reason:
        Status:                True
        Type:                  Updating
      Configuration:
        Name:  rendered-worker-d9b3f4ffcfd65c30dcf591a0e8cf9b2e
        Source:
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   00-worker
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   01-worker-container-runtime
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   01-worker-kubelet
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   99-worker-92697796-2203-11ea-b48c-fa163e3940e5-registries
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   99-worker-ssh
      Degraded Machine Count:     0
      Machine Count:              1
      Observed Generation:        3
      Ready Machine Count:        0
      Unavailable Machine Count:  1
      Updated Machine Count:      0
    Events:                       <none>

  2. oc describe コマンドを再度実行します。

    $ oc describe machineconfigpool/worker

    ワーカーの更新後の出力例

    ...
        Last Transition Time:  2019-12-19T04:53:09Z
        Message:               All nodes are updated with rendered-worker-f6819366eb455a401c42f8d96ab25c02
        Reason:
        Status:                True
        Type:                  Updated
        Last Transition Time:  2019-12-19T04:53:09Z
        Message:
        Reason:
        Status:                False
        Type:                  Updating
      Configuration:
        Name:  rendered-worker-f6819366eb455a401c42f8d96ab25c02
        Source:
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   00-worker
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   01-worker-container-runtime
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   01-worker-kubelet
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   51-worker-rh-registry-trust
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   99-worker-92697796-2203-11ea-b48c-fa163e3940e5-registries
          API Version:            machineconfiguration.openshift.io/v1
          Kind:                   MachineConfig
          Name:                   99-worker-ssh
      Degraded Machine Count:     0
      Machine Count:              3
      Observed Generation:        4
      Ready Machine Count:        3
      Unavailable Machine Count:  0
      Updated Machine Count:      3
    ...

    注記

    Observed Generation パラメーターは、コントローラーで作成される設定の生成に基づいて増加するカウントを表示します。このコントローラーは、仕様の処理とリビジョンの生成に失敗する場合でも、この値を更新します。Configuration Source 値は 51-worker-rh-registry-trust 設定を参照します。

  3. 以下のコマンドを使用して、policy.json ファイルが存在することを確認します。

    $ oc debug node/<node> -- chroot /host cat /etc/containers/policy.json

    出力例

    Starting pod/<node>-debug ...
    To use host binaries, run `chroot /host`
    {
      "default": [
        {
          "type": "insecureAcceptAnything"
        }
      ],
      "transports": {
        "docker": {
          "registry.access.redhat.com": [
            {
              "type": "signedBy",
              "keyType": "GPGKeys",
              "keyPath": "/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release"
            }
          ],
          "registry.redhat.io": [
            {
              "type": "signedBy",
              "keyType": "GPGKeys",
              "keyPath": "/etc/pki/rpm-gpg/RPM-GPG-KEY-redhat-release"
            }
          ]
        },
        "docker-daemon": {
          "": [
            {
              "type": "insecureAcceptAnything"
            }
          ]
        }
      }
    }

  4. 以下のコマンドを使用して、registry.redhat.io.yaml ファイルが存在することを確認します。

    $ oc debug node/<node> -- chroot /host cat /etc/containers/registries.d/registry.redhat.io.yaml

    出力例

    Starting pod/<node>-debug ...
    To use host binaries, run `chroot /host`
    docker:
         registry.redhat.io:
             sigstore: https://registry.redhat.io/containers/sigstore

  5. 以下のコマンドを使用して、registry.access.redhat.com.yaml ファイルが存在することを確認します。

    $ oc debug node/<node> -- chroot /host cat /etc/containers/registries.d/registry.access.redhat.com.yaml

    出力例

    Starting pod/<node>-debug ...
    To use host binaries, run `chroot /host`
    docker:
         registry.access.redhat.com:
             sigstore: https://access.redhat.com/webassets/docker/content/sigstore