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<kohei.ota@zozo.com> * Update content/ja/docs/tasks/configure-pod-container/assign-cpu-resource.md Co-Authored-By: Naoki Oketani <okepy.naoki@gmail.com> * Update assign-cpu-resource.md ここの *request* と *limit* はほかの文中の単語とは異なり、YAMLのfieldを表すため、訳さないでおく * fix translation "Pod scheduling is based on requests." の箇所。 requestsに基づいているのは事実だが、直訳されたときになにを指すのかあいまいなので、対象を具体的に記述 * Translate concepts/workloads/controllers/deployment/ in Japanese #14848 (#17794) * ja-trans: Translate concepts/workloads/controllers/deployment/ into Japanese (#14848) * ja-trans: Improve Japanese translation in concepts/workloads/controllers/deployment/ (#14848) * ja-trans: Improve Japanese translation in concepts/workloads/controllers/deployment/ (#14848) * ja-trans: Improve Japanese translation in concepts/workloads/controllers/deployment/ (#14848) * little fix (#18135) * update index (#18136) * Update /ja/docs/setup/_index.md (#18139) * Update /ja/docs/tasks/tools/install-kubectl/ (#18137) * update 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suggestions from review * Apply suggestions from code review Co-Authored-By: Naoki Oketani <okepy.naoki@gmail.com> * Update content/ja/docs/tasks/debug-application-cluster/debug-service.md Co-Authored-By: Naoki Oketani <okepy.naoki@gmail.com> Co-authored-by: inductor <kohei.ota@zozo.com> Co-authored-by: Naoki Oketani <okepy.naoki@gmail.com> * Translate concepts/extend-kubernetes/api-extension/custom-resources/ into Japanese (#18200) * Translate concepts/extend-kubernetes/api-extension/custom-resources/ into Japanese * Apply suggestions from code review between L1 an L120 by oke-py Co-Authored-By: Naoki Oketani <okepy.naoki@gmail.com> * Apply suggestions from code review by oke-py Co-Authored-By: Naoki Oketani <okepy.naoki@gmail.com> * Update CustomResourceDefinition not to localize into Japanese * Revert the link to customresourcedefinitions to English Co-Authored-By: Naoki Oketani <okepy.naoki@gmail.com> * Apply suggestions from code review by oke-py and inductor Co-Authored-By: Naoki 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Oketani <okepy.naoki@gmail.com> * translate controller Co-authored-by: Naoki Oketani <okepy.naoki@gmail.com> * ja-docs: translate install-kubeadm into Japanese (#18198) * ja-docs: translate install-kubeadm into Japanese * translate table title in install-kubeadm to Japanese * update kubeadm install doc * remove extra spaces * fix translation miss * translate url title into japanese * fix translation miss * remove line break in sentence and translate title * remove extra line break * remove extra line break * fix translation miss Co-authored-by: Naoki Oketani <okepy.naoki@gmail.com> Co-authored-by: Samuel Kihahu <kihahu@users.noreply.github.com> Co-authored-by: Takuma Hashimoto <takuma-hashimoto@freee.co.jp> Co-authored-by: Keita Akutsu <kakts.git@gmail.com> Co-authored-by: Masa Taniguchi <maabou512@gmail.com> Co-authored-by: Soto Sugita <sotoiwa@gmail.com> Co-authored-by: Kozzy Hasebe <48105562+hasebe@users.noreply.github.com> Co-authored-by: kazuaki harada 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| title | content_template | weight |
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| PodにQuality of Serviceを設定する | templates/task | 30 |
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このページでは、特定のQuality of Service (QoS)クラスをPodに割り当てるための設定方法を示します。Kubernetesは、Podのスケジューリングおよび退役を決定するためにQoSクラスを用います。
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QoSクラス
KubernetesはPodの作成時に次のいずれかのQoSクラスをPodに割り当てます:
- Guaranteed
- Burstable
- BestEffort
namespaceの作成
この演習で作成するリソースがクラスター内で分離されるよう、namespaceを作成します。
kubectl create namespace qos-example
GuaranteedのQoSクラスを割り当てたPodを作成する
PodにGuaranteedのQoSクラスを与えるには、以下が必要になります:
- Pod内のすべてのコンテナにメモリーの制限と要求が与えられており、同じ値であること。
- Pod内のすべてのコンテナにCPUの制限と要求が与えられており、同じ値であること。
以下に1つのコンテナをもつPodの設定ファイルを示します。コンテナには200MiBのメモリー制限とリクエストを与え、700ミリCPUの制限と要求を与えます。
{{< codenew file="pods/qos/qos-pod.yaml" >}}
Podを作成してください:
kubectl apply -f https://k8s.io/examples/pods/qos/qos-pod.yaml --namespace=qos-example
Podの詳細な情報を確認してください:
kubectl get pod qos-demo --namespace=qos-example --output=yaml
この出力では、KubernetesがPodにGuaranteed QoSクラスを与えたことを示しています。Podのコンテナにメモリー制限と一致するメモリー要求があり、CPU制限と一致するCPU要求があることも確認できます。
spec:
containers:
...
resources:
limits:
cpu: 700m
memory: 200Mi
requests:
cpu: 700m
memory: 200Mi
...
qosClass: Guaranteed
{{< note >}} コンテナにメモリー制限を指定し、メモリー要求を指定していない場合は、Kubernetesは自動的にメモリー制限と一致するメモリー要求を割り当てます。同様に、コンテナにCPU制限を指定し、CPU要求を指定していない場合は、Kubernetesは自動的にCPU制限と一致するCPU要求を割り当てます。 {{< /note >}}
Podを削除してください:
kubectl delete pod qos-demo --namespace=qos-example
BurstableのQoSクラスを割り当てたPodを作成する
次のような場合に、Burstable QoSクラスがPodに与えられます:
- PodがGuaranteed QoSクラスの基準に満たない場合。
- Pod内の1つ以上のコンテナがメモリーまたはCPUの要求を与えられている場合。
以下に1つのコンテナをもつPodの設定ファイルを示します。コンテナには200MiBのメモリー制限と100MiBのメモリー要求を与えます。
{{< codenew file="pods/qos/qos-pod-2.yaml" >}}
Podを作成してください:
kubectl apply -f https://k8s.io/examples/pods/qos/qos-pod-2.yaml --namespace=qos-example
Podの詳細な情報を確認してください:
kubectl get pod qos-demo-2 --namespace=qos-example --output=yaml
この出力では、KubernetesがPodにBurstable QoSクラスを与えたことを示しています。
spec:
containers:
- image: nginx
imagePullPolicy: Always
name: qos-demo-2-ctr
resources:
limits:
memory: 200Mi
requests:
memory: 100Mi
...
qosClass: Burstable
Podを削除してください:
kubectl delete pod qos-demo-2 --namespace=qos-example
BestEffortのQoSクラスを割り当てたPodを作成する
PodにBestEffort QoSクラスを与えるには、Pod内のコンテナにはメモリーやCPUの制限や要求を指定してはなりません。
以下に1つのコンテナをもつPodの設定ファイルを示します。コンテナにはメモリーやCPUの制限や要求がありません:
{{< codenew file="pods/qos/qos-pod-3.yaml" >}}
Podを作成してください:
kubectl apply -f https://k8s.io/examples/pods/qos/qos-pod-3.yaml --namespace=qos-example
Podの詳細な情報を確認してください:
kubectl get pod qos-demo-3 --namespace=qos-example --output=yaml
この出力では、KubernetesがPodにBestEffort QoSクラスを与えたことを示しています。
spec:
containers:
...
resources: {}
...
qosClass: BestEffort
Podを削除してください:
kubectl delete pod qos-demo-3 --namespace=qos-example
2つのコンテナを含むPodを作成する
以下に2つのコンテナをもつPodの設定ファイルを示します。一方のコンテナは200MiBのメモリー要求を指定し、もう一方のコンテナには要求や制限を指定しません。
{{< codenew file="pods/qos/qos-pod-4.yaml" >}}
このPodがBurstable QoSクラスの基準を満たしていることに注目してください。つまり、Guaranteed QoSクラスの基準に満たしておらず、一方のコンテナにはメモリー要求を与えられています。
Podを作成してください:
kubectl apply -f https://k8s.io/examples/pods/qos/qos-pod-4.yaml --namespace=qos-example
Podの詳細な情報を確認してください:
kubectl get pod qos-demo-4 --namespace=qos-example --output=yaml
この出力では、KubernetesがPodにBurstable QoSクラスを与えたことを示しています:
spec:
containers:
...
name: qos-demo-4-ctr-1
resources:
requests:
memory: 200Mi
...
name: qos-demo-4-ctr-2
resources: {}
...
qosClass: Burstable
Podを削除してください:
kubectl delete pod qos-demo-4 --namespace=qos-example
クリーンアップ
namespaceを削除してください:
kubectl delete namespace qos-example
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