From 0b05bbbbc7dcf4861bdcb26a30e87707029ed060 Mon Sep 17 00:00:00 2001 From: AdamDang Date: Tue, 20 Nov 2018 13:31:55 +0800 Subject: [PATCH] zh_trans: add quota-memory-cpu-namespace.md (#11047) * zh_trans: add quota-memory-cpu-namespace.md zh_trans: add quota-memory-cpu-namespace.md * Create quota-mem-cpu.yaml * Create quota-mem-cpu-pod.yaml * Create quota-mem-cpu-pod-2.yaml * Fixes due to review --- .../quota-memory-cpu-namespace.md | 306 ++++++++++++++++++ .../admin/resource/quota-mem-cpu-pod-2.yaml | 16 + .../admin/resource/quota-mem-cpu-pod.yaml | 16 + .../admin/resource/quota-mem-cpu.yaml | 10 + 4 files changed, 348 insertions(+) create mode 100644 content/zh/docs/tasks/administer-cluster/manage-resources/quota-memory-cpu-namespace.md create mode 100644 content/zh/examples/admin/resource/quota-mem-cpu-pod-2.yaml create mode 100644 content/zh/examples/admin/resource/quota-mem-cpu-pod.yaml create mode 100644 content/zh/examples/admin/resource/quota-mem-cpu.yaml diff --git a/content/zh/docs/tasks/administer-cluster/manage-resources/quota-memory-cpu-namespace.md b/content/zh/docs/tasks/administer-cluster/manage-resources/quota-memory-cpu-namespace.md new file mode 100644 index 0000000000..146d5edf13 --- /dev/null +++ b/content/zh/docs/tasks/administer-cluster/manage-resources/quota-memory-cpu-namespace.md @@ -0,0 +1,306 @@ + + +--- +title: 为命名空间配置内存和 CPU 配额 +content_template: templates/task +weight: 50 +--- + + +{{% capture overview %}} + + + +本文介绍怎样为命名空间设置容器可用的内存和 CPU 总量。你可以通过 [ResourceQuota](/docs/reference/generated/kubernetes-api/{{< param "version" >}}/#resourcequota-v1-core) +对象设置配额. + + +{{% /capture %}} + + +{{% capture prerequisites %}} + +{{< include "task-tutorial-prereqs.md" >}} {{< version-check >}} + + + +集群中每个节点至少有1 GiB的内存。 + +{{% /capture %}} + + +{{% capture steps %}} + + + +## 创建命名空间 + +创建一个命名空间,以便本练习中创建的资源和集群的其余部分相隔离。 + +```shell +kubectl create namespace quota-mem-cpu-example +``` + + + +## 创建 ResourceQuota + +这里给出一个 ResourceQuota 对象的配置文件: + +{{< codenew file="admin/resource/quota-mem-cpu.yaml" >}} + + + +创建 ResourceQuota + +```shell +kubectl create -f https://k8s.io/examples/admin/resource/quota-mem-cpu.yaml --namespace=quota-mem-cpu-example +``` + + + +查看 ResourceQuota 详情: + +```shell +kubectl get resourcequota mem-cpu-demo --namespace=quota-mem-cpu-example --output=yaml +``` + + + +ResourceQuota 在 quota-mem-cpu-example 命名空间中设置了如下要求: + +* 每个容器必须有内存请求和限制,以及 CPU 请求和限制。 +* 所有容器的内存请求总和不能超过1 GiB。 +* 所有容器的内存限制总和不能超过2 GiB。 +* 所有容器的 CPU 请求总和不能超过1 cpu。 +* 所有容器的 CPU 限制总和不能超过2 cpu。 + + + +## 创建 Pod + +这里给出 Pod 的配置文件: + +{{< codenew file="admin/resource/quota-mem-cpu-pod.yaml" >}} + + + + +创建 Pod: + +```shell +kubectl create -f https://k8s.io/examples/admin/resource/quota-mem-cpu-pod.yaml --namespace=quota-mem-cpu-example +``` + + + +检查下 Pod 中的容器在运行: + +``` +kubectl get pod quota-mem-cpu-demo --namespace=quota-mem-cpu-example +``` + + + +再查看 ResourceQuota 的详情: + +``` +kubectl get resourcequota mem-cpu-demo --namespace=quota-mem-cpu-example --output=yaml +``` + + + +输出结果显示了配额以及有多少配额已经被使用。你可以看到 Pod 的内存和 CPU 请求值及限制值没有超过配额。 + +``` +status: + hard: + limits.cpu: "2" + limits.memory: 2Gi + requests.cpu: "1" + requests.memory: 1Gi + used: + limits.cpu: 800m + limits.memory: 800Mi + requests.cpu: 400m + requests.memory: 600Mi +``` + + + +## 尝试创建第二个 Pod + +这里给出了第二个 Pod 的配置文件: + +{{< codenew file="admin/resource/quota-mem-cpu-pod-2.yaml" >}} + + + +配置文件中,你可以看到 Pod 的内存请求为700 MiB。请注意新的内存请求与已经使用的内存请求只和超过了内存请求的配额。600 MiB + 700 MiB > 1 GiB。 + +尝试创建 Pod: + +```shell +kubectl create -f https://k8s.io/examples/admin/resource/quota-mem-cpu-pod-2.yaml --namespace=quota-mem-cpu-example +``` + + + +第二个 Pod 不能被创建成功。输出结果显示创建第二个 Pod 会导致内存请求总量超过内存请求配额。 + +``` +Error from server (Forbidden): error when creating "examples/admin/resource/quota-mem-cpu-pod-2.yaml": +pods "quota-mem-cpu-demo-2" is forbidden: exceeded quota: mem-cpu-demo, +requested: requests.memory=700Mi,used: requests.memory=600Mi, limited: requests.memory=1Gi +``` + + + +## 讨论 + +如你在本练习中所见,你可以用 ResourceQuota 限制命名空间中所有容器的内存请求总量。同样你也可以限制内存限制总量、CPU 请求总量、CPU 限制总量。 + +如果你想对单个容器而不是所有容器进行限制,就请使用 [LimitRange](/docs/tasks/administer-cluster/memory-constraint-namespace/)。 + + + +## 数据清理 + +删除你的命名空间: + +```shell +kubectl delete namespace quota-mem-cpu-example +``` + +{{% /capture %}} + +{{% capture whatsnext %}} + + + +### 集群管理员参考 + +* [为命名空间配置默认内存请求和限制](/docs/tasks/administer-cluster/memory-default-namespace/) + +* [为命名空间配置内存限制的最小值和最大值](/docs/tasks/administer-cluster/memory-constraint-namespace/) + +* [为命名空间配置 CPU 限制的最小值和最大值](/docs/tasks/administer-cluster/cpu-constraint-namespace/) + +* [为命名空间配置内存和 CPU 配额](/docs/tasks/administer-cluster/quota-memory-cpu-namespace/) + +* [为命名空间配置 Pod 配额](/docs/tasks/administer-cluster/quota-pod-namespace/) + +* [为 API 对象配置配额](/docs/tasks/administer-cluster/quota-api-object/) + + + +### 应用开发者参考 + +* [为容器和 Pod 分配内存资源](/docs/tasks/configure-pod-container/assign-memory-resource/) + +* [为容器和 Pod 分配CPU资源](/docs/tasks/configure-pod-container/assign-cpu-resource/) + +* [为 Pod 配置 Service 数量](/docs/tasks/configure-pod-container/quality-service-pod/) + +{{% /capture %}} + + + + + diff --git a/content/zh/examples/admin/resource/quota-mem-cpu-pod-2.yaml b/content/zh/examples/admin/resource/quota-mem-cpu-pod-2.yaml new file mode 100644 index 0000000000..22726c600a --- /dev/null +++ b/content/zh/examples/admin/resource/quota-mem-cpu-pod-2.yaml @@ -0,0 +1,16 @@ +apiVersion: v1 +kind: Pod +metadata: + name: quota-mem-cpu-demo-2 +spec: + containers: + - name: quota-mem-cpu-demo-2-ctr + image: redis + resources: + limits: + memory: "1Gi" + cpu: "800m" + requests: + memory: "700Mi" + cpu: "400m" + diff --git a/content/zh/examples/admin/resource/quota-mem-cpu-pod.yaml b/content/zh/examples/admin/resource/quota-mem-cpu-pod.yaml new file mode 100644 index 0000000000..ba27bf5ccf --- /dev/null +++ b/content/zh/examples/admin/resource/quota-mem-cpu-pod.yaml @@ -0,0 +1,16 @@ +apiVersion: v1 +kind: Pod +metadata: + name: quota-mem-cpu-demo +spec: + containers: + - name: quota-mem-cpu-demo-ctr + image: nginx + resources: + limits: + memory: "800Mi" + cpu: "800m" + requests: + memory: "600Mi" + cpu: "400m" + diff --git a/content/zh/examples/admin/resource/quota-mem-cpu.yaml b/content/zh/examples/admin/resource/quota-mem-cpu.yaml new file mode 100644 index 0000000000..5c4bcd81b8 --- /dev/null +++ b/content/zh/examples/admin/resource/quota-mem-cpu.yaml @@ -0,0 +1,10 @@ +apiVersion: v1 +kind: ResourceQuota +metadata: + name: mem-cpu-demo +spec: + hard: + requests.cpu: "1" + requests.memory: 1Gi + limits.cpu: "2" + limits.memory: 2Gi