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@yudegaeru

Kubernetesで「error: a container name must be specified for pod」エラーが発生したときの対処方法

Last updated at Posted at 2020-09-20

エラー内容

Kubernetesで複数コンテナを含むDeploymentのLogを確認しようとした際に、以下のエラーが発生しました。

$ kubectl logs pod/app-664dd8bdf5-cq62j
error: a container name must be specified for pod app-664dd8bdf5-cq62j, choose one of: [app web]

解消方法

複数コンテナを含むPodのログを確認しようとしていたため、複数コンテナのうちのどのログを見るのか、-cオプションで指定してあげる必要がありました。

$ kubectl logs pod/app-664dd8bdf5-cq62j -c web
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