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ZH-trans: merge release1.16-temporary to master (#18217)

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* zh-trans:/docs/docs/concepts/workloads/pods/ephemeral-containers.md (#16948)

* update zh-trans of define-environment-variable-container.md (#16999)

Signed-off-by: Yixiang2019 <wang.yixiang@zte.com.cn>

* update chinese docs (#16985)

* Fix ordered list (#16988)

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update

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* zh-trans:/docs/reference/setup-tools/kubeadm/kubeadm-upgrade-phase.md (#16951)

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update

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update

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* Remove redundant symbol and fix some ordered list (#17000)

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update

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* update-zh-translation/docs/reference/setup-tools/kubeadm/kubeadm-init.md (#16997)

* update zh translation kubeadm-reset.md kubeadm-upgrade.md (#16992)

* Create kubeadm_join_phase_control-plane-join_all.md (#16987)

* Update web-ui-dashboard.md (#16976)

* update format problem (#16956)

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update

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* zh-trans:/docs/docs/concepts/storage/volume-pvc-datasource.md (#17021)

* update zh translation /docs/reference/access-authn-authz/webhook.md (#16860)

* fix confict update zh translation (#16863)

* zh-trans:/docs/concepts/workloads/pods/disruptions.md (#16983)

* zh-trans:/docs/concepts/workloads/pods/disruptions.md

* Update content/zh/docs/concepts/workloads/pods/disruptions.md

Co-Authored-By: Qiming <tengqim@cn.ibm.com>

* update zh translation content/zh/docs/reference/command-line-tools-reference/kube-scheduler.md (#17006)

* Update RC's link (#16935)

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Update

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update the style

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* Update the links for /zh/docs/setup (#16938)

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* zh-trans:/docs/docs/concepts/services-networking/dual-stack.md (#17024)

* update zh translation /reference/setup-tools/kubeadm/generated/kubeadm.md (#17036)

* update zh tanslation /reference/setup-tools/kubeadm/generated/kubeadm_alpha_kubelet_config_download.md (#17037)

* update zh translation -/reference/setup-tools/kubeadm/generated/kubeadm_alpha.md (#17038)

* update zh translation /docs/contribute/participating.md (#17040)

* Fix cri-o's links to match English docs (#16936)

Signed-off-by: PingWang <wang.ping5@zte.com.cn>

* update zh translation content/zh/docs/reference/kubectl/jsonpath.md (#16862)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_token_generate.md (#17049)

* update Unkown ->  Unknown (#17062)

* zh-translation:high-availability.md (#16960)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* update Runnning -> Running (#17061)

* zh-trans:/docs/docs/concepts/storage/volume-snapshots.md (#17054)

* update zh transation /docs/reference/setup-tools/kubeadm/generated/kubeadm_reset.md (#17060)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_token_create.md (#17052)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_token.md (#17055)

* update zh translation update-zh-translation-/docs/reference/setup-tools/kubeadm/generated/kubeadm_token_list.md (#17048)

* update zh-translation:ha-topology.md (#17099)

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* zh-trans /reference/setup-tools/kubeadm/generated/kubeadm_config_images_list.md (#17093)

* update zh translation /reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_all.md (#17083)

* Add Chinese translation for scheduler-perf-tuning (#17087)

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for scheduler-perf-tuning

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for scheduler-perf-tuning

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for scheduler-perf-tuning

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

* zh trans content/zh/docs/setup/production-environment/tools/kubeadm/control-plane-flags.md (#17121)

* update zh trans content/zh/docs/tasks/access-application-cluster/service-access-application-cluster.md (#17122)

* zh-translation:content/zh/docs/tasks/administer-cluster/namespaces-walkthrough.md (#17105)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* update-zh-translation-/docs/reference/setup-tools/kubeadm/generated/kubeadm_config_migrate.md (#17091)

* update zh trans /docs/setup/learning-environment/minikube.md (#17143)

* update zh trans /zh/docs/reference/_index.md (#17146)

* update zh trans /docs/tasks/access-application-cluster/port-forward-access-application-cluster.md (#17134)

* update zh translation 20191020-update-zh-translation-/docs/contribute/localization.md (#17046)

* update zh trans /docs/reference/using-api/client-libraries.md (#17144)

* update zh trans /docs/reference/setup-tools/kubeadm/generated/kubeadm_version.md (#17145)

* update zh /docs/reference/setup-tools/kubeadm/generated/kubeadm_upgrade_node.md (#17131)

* update zh translation /reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_front-proxy-client.md (#17081)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_kubeconfig.md (#17078)

* add zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-join_update-status.md (#17076)

* update zh trans content/zh/docs/contribute/generate-ref-docs/kubectl.md (#17165)

* update zh translation /reference/command-line-tools-reference/kube-proxy.md (#17107)

* zh-trans:/docs/docs/concepts/workloads/pods/pod-topology-spread-const… (#16955)

* zh-trans:/docs/docs/concepts/workloads/pods/pod-topology-spread-constraints.md

* Update pod-topology-spread-constraints.md

* zh-trans:/docs/concepts/configuration/scheduling-framework.md (#17088)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_upload-config_kubelet.md (#17079)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_control-plane_apiserver.md (#17077)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-join.md (#17075)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_token_delete.md (#17050)

* update zh trans /docs/concepts/overview/working-with-objects/namespaces.md (#17205)

* update zh trans /docs/concepts/overview/what-is-kubernetes.md (#17203)

* pr_release-1.16_crictl (#17201)

* update zh docs/tasks/administer-cluster/dns-debugging-resolution.md (#17186)

* update zh trans content/zh/docs/concepts/overview/working-with-objects/field-selectors.md (#17191)

* translate configure_upgrade_etcd (#17160)

* translate kubeadm_upgrade_apply (#17159)

* update zh /docs/tasks/job/coarse-parallel-processing-work-queue.md (#17155)

* translate docs/setup/release/version-skew-policy.md to Chinese (#17142)

* update zh trans content/zh/docs/tasks/access-application-cluster/create-external-load-balancer.md (#17124)

* zh-trans replace the wrong translation (#17103)

zh-trans replace the wrong translation

* Merged 1.14~1.16 changes (#17117)

* zh-trans:/docs/concepts/configuration/assign-pod-node.md (#17129)

* update zh trans /docs/contribute/generate-ref-docs/kubernetes-api.md (#17161)

* pr_release-1.16_basic-ss (#17169)

* Add zh-trans of assign-cpu-resource.md (#17063)

Signed-off-by: heqg <he.qingguo@zte.com.cn>

Add zh-trans of assign-cpu-resource.md

Signed-off-by: heqg <he.qingguo@zte.com.cn>

Add zh-trans of assign-cpu-resource.md

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Add zh-trans of assign-cpu-resource.md

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Add zh-trans of assign-cpu-resource.md

Signed-off-by: heqg <he.qingguo@zte.com.cn>

* update zh trans content/zh/docs/concepts/overview/working-with-objects/common-labels.md (#17193)

* update zh translation /docs/contribute/intermediate.md (#17041)

* zh-trans:docs/setup/production-environment/turnkey/tencent.md (#17207)

* pr_release-1.16_mysql-wordpress-pv (#17202)

* pr_release-1.16_reconfig-kubelet (#17200)

* zh-trans:/docs/docs/concepts/workloads/controllers/jobs-run-completio… (#17020)

* zh-trans:/docs/docs/concepts/workloads/controllers/jobs-run-completion.md

* Update jobs-run-completion.md

* Update jobs-run-completion.md

* update zh trans content/zh/docs/concepts/extend-kubernetes/extend-cluster.md (#17212)

* update zh trans content/zh/docs/concepts/extend-kubernetes/api-extension/apiserver-aggregation.md (#17213)

* add zh trans /docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-prepare_kubeconfig.md (#17220)

kubeadm_join_phase_control-plane-prepare_download-certs.md

* add zh trans /reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs.md and /reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-prepare.md (#17219)

* update zh trans content/zh/docs/concepts/containers/images.md (#17216)

* ZH-trans: add _index.md (#17214)

* ZH-trans: add _index.md

* add _index.md file

* add _index.md files

* pr_release-1.16_crd-versions (#17198)

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_config_images_pull.md (#17092)

* zh-trans /reference/setup-tools/kubeadm/generated/kubeadm_config_images.md (#17094)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_addon_kube-proxy.md   and   content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_sa.md (#17222)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-prepare_all.md  content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-prepare_certs.md (#17221)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_addon_all.md (#17223)

* 013 /docs/concepts/services networking/ingress.md (#17185)

* x

* update zh trans content/zh/docs/concepts/services-networking/ingress.md

* zh-trans:/reference/setup-tools/kubeadm/generated/kubeadm_completion.md and kubeadm_config.md (#17097)

* add zh trans reference/glossary/pod-lifecycle (#17226)

* update zh-translation document (#17096)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* update zh-translation:setup-ha-etcd-with-kubeadm.md (#17098)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* add zh trans /docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_selfhosting.md and /docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_kubelet_config_enable-dynamic.md (#17227)

* add zh trans /docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_kubeconfig_user.md and /docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_upload-config_kubeadm.md (#17228)

* zh-translation:content/zh/docs/tasks/extend-kubectl/kubectl-plugins.md (#17089)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* update zh translation /docs/reference/setup-tools/kubeadm/generated/kubeadm_join.md (#17080)

* update zh translation /reference/setup-tools/kubeadm/generated/kubeadm_config_view.md (#17085)

* zh-translation:troubleshooting-kubeadm.md (#17069)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* zh-trans: docs/concepts/scheduling/kube-scheduler.md (#17067)

* Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

Add Chinese translation for kube-scheduler

Signed-off-by: GeorgeSen <wang.sen2@zte.com.cn>

* Update kube-scheduler.md

* Add Chinese translation for kube-scheduler

* Update kube-scheduler.md

* Update kube-scheduler.md

* Update kube-scheduler.md

* translate pods.md  and init-containers.md for branch release-1.16 (#17208)

* update zh translation /docs/contribute/start.md (#17039)

* zh-translation:2017-10-00-Five-Days-Of-Kubernetes-18.md (#17229)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* translate kubeadm-certs.md (#17090)

* update the Illegal comment such as : (<！--、<--) (#17266)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_etcd-ca.md (#17268)

* update zh /docs/concepts/architecture/cloud-controller.md (#17263)

* update zh /docs/concepts/cluster-administration/logging.md (#17247)

* modify the show of zh translation /concepts/overview/what-is-kubernetes.md /reference/setup-tools/kubeadm/generated/kubeadm_init.md  /reference/setup-tools/kubeadm/kubeadm-init.md (#17246)

* zh-translation:kubeadm_init_phase_control-plane_all.md (#17243)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* zh-translation:kubeadm_join_phase_control-plane-join_etcd.md (#17236)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_kubelet-start.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_upload-certs.md (#17230)

* add content/zh/docs/reference/glossary/container-runtime.md file fix-up to pass the ci and trans content/zh/docs/reference/glossary/container-runtime.md、content/zh/docs/concepts/overview/components.md (#17211)

* zh-translation:mirror-pod.md (#17231)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* zh-translation:kubeadm_init_phase_upload-config.md (#17238)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* update zh /docs/concepts/workloads/pods/pod-overview.md (#17239)

* update the format of zh translation content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_reset.md content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_upgrade.md   content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_upgrade_apply.md  content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_upgrade_plan.md  content/zh/docs/reference/setup-tools/kubeadm/kubeadm-config.md  content/zh/docs/reference/setup-tools/kubeadm/kubeadm-reset.md  content/zh/docs/reference/setup-tools/kubeadm/kubeadm-token.md  content/zh/docs/reference/setup-tools/kubeadm/kubeadm-upgrade.md (#17248)

* Create advanced.md (#17256)

* Create advanced.md

* trans the advanced.md and fix the build bugs

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_control-plane.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_control-plane_scheduler.md (#17269)

* zh-translation:kubelet-integration.md (#17272)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* pr_release-1.16_out-of-resource (#17199)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_front-proxy-ca.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_control-plane_controller-manager.md (#17267)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_etcd-peer.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_kubeconfig_admin.md (#17271)

* pr_release-1.16_ext-admission-ctl (#17196)

* update zh translation /docs/contribute/advanced.md (#17042)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_apiserver-etcd-client.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_ca.md (#17275)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_config_print.md update zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_config.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_config_print_init-defaults.md (#17282)

* add zh trans  content/zh/docs/reference/setup-tools/kubeadm/generated… (#17287)

* add zh trans  content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_etcd.md content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_upload-config_all.md update zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_control-plane.md

* Update kubeadm_init_phase_etcd.md

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/… (#17285)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_etcd-server.md content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_kubelet.md update zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_apiserver.md

* Update kubeadm_alpha_kubelet.md

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_all.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_addon.md fix-up bad comment kubeadm_alpha_certs_renew.md、kubeadm_alpha_certs_renew_apiserver-etcd-client.md、kubeadm_init_phase_addon_all.md (#17276)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/… (#17281)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_etcd_local.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_config_print_join-defaults.md

* Update kubeadm_init_phase_etcd_local.md

* zh trans update-daemon-set.md (#16872)

* zh trans update-daemon-set.md

* Update update-daemon-set.md

* managing-tls-in-a-cluster.md (#16874)

* update-api-object-kubectl-patch.md (#16875)

* improve the zh trans /kubeadm/generated/kubeadm_init_phase_.* 1 (#17295)

* improve the zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_config_.* (#17294)

* modify the zh translation content/zh/docs/reference/setup-tools/kubea… (#17293)

* modify the zh translation content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_.*

* Update kubeadm_alpha.md

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_kubeconfig_all.md and content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_preflight.md (#17280)

* add zh /docs/reference/glossary/cgroup.md (#17291)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_kubelet_config.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_apiserver-kubelet-client.md (#17288)

* improve zh trans of command in /kubeadm/generated/kubeadm_init_phase_.* files (#17297)

* improve zh command translation /kubeadm/generated/kubeadm_init_.* files (#17298)

* update zh trans in /kubeadm/generated/kubeadm_.* files (#17306)

* add zh trans /reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_etcd-healthcheck-client.md、/reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_etcd-peer.md、/reference/setup-tools/kubeadm/generated/kubeadm_alpha_kubeconfig.md (#17308)

* Improve previously translated documents (#17327)

Signed-off-by: yuxiaobo <yuxiaobogo@163.com>

* zh-trans: docs/setup/production-environment/turnkey/aws.md (#17320)

* Update zh.toml

* update zh trans /generated/kubeadm_join_phase_.* files (#17301)

* Update zh.toml

* add zh /docs/reference/glossary/pod-disruption-budget.md (#17344)

* pr_release-1.16_config-aggregation-layer (#17197)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_controller-manager.conf.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_scheduler.conf.md (#17390)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_kubeconfig_scheduler.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-prepare_control-plane.md (#17381)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_alpha_certs_renew_apiserver-kubelet-client.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_control-plane-join_mark-control-plane.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_join_phase_kubelet-start.md (#17380)

* add zh trans content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_addon_coredns.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_bootstrap-token.md、content/zh/docs/reference/setup-tools/kubeadm/generated/kubeadm_init_phase_certs_apiserver.md (#17383)

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Issue available at https://kubernetes.io/zh/docs/concepts/containers/runtime-class/
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Co-Authored-By: Qiming <tengqim@cn.ibm.com>

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---
title: 卷快照
content_template: templates/concept
weight: 20
---
<!--
---
reviewers:
- jsafrane
- saad-ali
- thockin
- msau42
title: Volume Snapshots
content_template: templates/concept
weight: 20
---
-->
{{% capture overview %}}
{{< feature-state for_k8s_version="v1.12" state="alpha" >}}
<!--
This document describes the current state of `VolumeSnapshots` in Kubernetes. Familiarity with [persistent volumes](/docs/concepts/storage/persistent-volumes/) is suggested.
-->
本文档描述 Kubernetes 中 `VolumeSnapshots` 的当前状态。建议先熟悉[持久卷](/docs/concepts/storage/persistent-volumes/)。
{{% /capture %}}
{{% capture body %}}
<!--
## Introduction
-->
## 介绍
<!--
Similar to how API resources `PersistentVolume` and `PersistentVolumeClaim` are used to provision volumes for users and administrators, `VolumeSnapshotContent` and `VolumeSnapshot` API resources are provided to create volume snapshots for users and administrators.
-->
与 `PersistentVolume` 和 `PersistentVolumeClaim` 两个 API 资源用于给用户和管理员提供卷类似，`VolumeSnapshotContent` 和 `VolumeSnapshot` 两个 API 资源用于给用户和管理员创建卷快照。
<!--
A `VolumeSnapshotContent` is a snapshot taken from a volume in the cluster that has been provisioned by an administrator. It is a resource in the cluster just like a PersistentVolume is a cluster resource.
-->
`VolumeSnapshotContent` 是从管理员已提供的集群中的卷获取的快照。就像持久卷是集群的资源一样，它也是集群中的资源。
<!--
A `VolumeSnapshot` is a request for snapshot of a volume by a user. It is similar to a PersistentVolumeClaim.
-->
`VolumeSnapshot` 是用户对于卷的快照的请求。它类似于持久卷声明。
<!--
While `VolumeSnapshots` allow a user to consume abstract storage resources, cluster administrators
need to be able to offer a variety of `VolumeSnapshotContents` without exposing
users to the details of how those volume snapshots should be provisioned. For these needs
there is the `VolumeSnapshotClass` resource.
-->
`VolumeSnapshots` 允许用户消费抽象的存储资源，集群管理员需要能够提供多种 `VolumeSnapshotContents`，又不会向用户暴露这些应该供应的卷快照的细节。为了实现这些需求，就需要 `VolumeSnapshotClass` 资源。
<!--
Users need to be aware of the following when using this feature:
-->
当使用该功能时，用户需要注意以下几点：
<!--
* API Objects `VolumeSnapshot`, `VolumeSnapshotContent`, and `VolumeSnapshotClass` are CRDs, not part of the core API.
* `VolumeSnapshot` support is only available for CSI drivers.
* As part of the deployment process, the Kubernetes team provides a sidecar helper container for the snapshot controller called `external-snapshotter`. It watches `VolumeSnapshot` objects and triggers `CreateSnapshot` and `DeleteSnapshot` operations against a CSI endpoint.
* CSI drivers may or may not have implemented the volume snapshot functionality. The CSI drivers that have provided support for volume snapshot will likely use `external-snapshotter`.
* The CSI drivers that support volume snapshot will automatically install CRDs defined for the volume snapshots.
-->
* API 对象 `VolumeSnapshot`，`VolumeSnapshotContent` 和 `VolumeSnapshotClass` 是 CRD，不是核心 API 的部分。
* `VolumeSnapshot` 支持仅可用于 CSI 驱动。
* 作为部署过程的一部分，Kubernetes 团队为快照控制器提供了一个名为 `external-snapshotter` 的 sidecar 帮助容器。它监视 `VolumeSnapshot` 对象然后向 CSI 端点触发 `CreateSnapshot` 和 `DeleteSnapshot` 操作。
* CSI 驱动可能实现，也可能没有实现卷快照功能。CSI 驱动可能会使用 `external-snapshotter` 来提供对卷快照的支持。
* 支持卷快照的 CSI 驱动将自动安装 用于定义卷快照定义的 CRD。
<!--
## Lifecycle of a volume snapshot and volume snapshot content
-->
## 卷快照和卷快照内容的生命周期
<!--
`VolumeSnapshotContents` are resources in the cluster. `VolumeSnapshots` are requests for those resources. The interaction between `VolumeSnapshotContents` and `VolumeSnapshots` follow this lifecycle:
-->
`VolumeSnapshotContents` 是集群中的资源。`VolumeSnapshots` 是对于这些资源的请求。`VolumeSnapshotContents` 和 `VolumeSnapshots` 之间的交互遵循以下生命周期：
<!--
### Provisioning Volume Snapshot
-->
### 供应卷快照
<!--
There are two ways snapshots may be provisioned: statically or dynamically.
-->
快照可以通过两种方式进行供应：静态或动态。
<!--
#### Static
-->
#### 静态的
<!--
A cluster administrator creates a number of `VolumeSnapshotContents`. They carry the details of the real storage which is available for use by cluster users. They exist in the Kubernetes API and are available for consumption.
-->
集群管理员创建多个 `VolumeSnapshotContents`。它们带有实际存储的详细信息，可以供集群用户使用。它们存在于 Kubernetes API 中，并且能够被使用。
<!--
#### Dynamic
-->
#### 动态的
<!--
When none of the static `VolumeSnapshotContents` the administrator created matches a user's `VolumeSnapshot`,
the cluster may try to dynamically provision a volume snapshot specially for the `VolumeSnapshot` object.
This provisioning is based on `VolumeSnapshotClasses`: the `VolumeSnapshot` must request a
[volume snapshot class](/docs/concepts/storage/volume-snapshot-classes/) and
the administrator must have created and configured that class in order for dynamic
provisioning to occur.
-->
当管理员创建的静态 `VolumeSnapshotContents` 都不能匹配用户的 `VolumeSnapshot`，集群可能会尝试专门为 `VolumeSnapshot` 对象供应一个卷快照。此供应基于 `VolumeSnapshotClasses`：`VolumeSnapshot` 必须请求[卷快照类](/docs/concepts/storage/volume-snapshot-classes/)并且管理员必须已经创建并配置了该类，才能进行动态供应。
<!--
### Binding
-->
### 绑定
<!--
A user creates, or has already created in the case of dynamic provisioning, a `VolumeSnapshot` with a specific amount of storage requested and with certain access modes. A control loop watches for new VolumeSnapshots, finds a matching VolumeSnapshotContent (if possible), and binds them together. If a VolumeSnapshotContent was dynamically provisioned for a new VolumeSnapshot, the loop will always bind that VolumeSnapshotContent to the VolumeSnapshot. Once bound, `VolumeSnapshot` binds are exclusive, regardless of how they were bound. A VolumeSnapshot to VolumeSnapshotContent binding is a one-to-one mapping.
-->
用户创建，或在动态供应场景下已经创建了的 `VolumeSnapshot` 具有特定数量的存储请求和特定的访问模式。一个控制循环监视新的 VolumeSnapshots，找到匹配的 VolumeSnapshotContent（如果可能），并把它们绑定到一起。如果 VolumeSnapshotContent 是给动态供应给一个新的VolumeSnapshot，循环将依然绑定 VolumeSnapshotContent 到 VolumeSnapshot。一旦绑定，无论是如何绑定的，`VolumeSnapshot` 绑定都是排他的。VolumeSnapshot 到 VolumeSnapshotContent 的绑定是一对一的映射。
<!--
VolumeSnapshots will remain unbound indefinitely if a matching VolumeSnapshotContent does not exist. VolumeSnapshots will be bound as matching VolumeSnapshotContents become available.
-->
如果不存在匹配的 VolumeSnapshotContent，VolumeSnapshots 将永远保持未绑定状态。当匹配的 VolumeSnapshotContents 可用时，将绑定 VolumeSnapshots。
<!--
### Persistent Volume Claim in Use Protection
-->
### 使用保护的持久性卷声明
<!--
The purpose of the Persistent Volume Claim Object in Use Protection feature is to ensure that in-use PVC API objects are not removed from the system (as this may result in data loss).
-->
使用保护的持久性卷声明功能的目的是确保使用中的 PVC API 对象不会从系统中被删除（因为这可能会导致数据丢失）。
<!--
If a PVC is in active use by a snapshot as a source to create the snapshot, the PVC is in-use. If a user deletes a PVC API object in active use as a snapshot source, the PVC object is not removed immediately. Instead, removal of the PVC object is postponed until the PVC is no longer actively used by any snapshots. A PVC is no longer used as a snapshot source when `ReadyToUse` of the snapshot `Status` becomes `true`.
-->
如果一个 PVC 正在被快照用来作为源进行快照创建，则该 PVC 是使用中的。如果用户删除正作为快照源的 PVC API 对象，则 PVC 对象不会立即被删除掉。相反，PVC 对象的删除将推迟到任何快照不在主动使用它为止。当快照的 `Status` 中的 `ReadyToUse`值为 `true` 时，PVC 将不再用作快照源。
<!--
### Delete
-->
### 删除
<!--
Deletion removes both the `VolumeSnapshotContent` object from the Kubernetes API, as well as the associated storage asset in the external infrastructure.
-->
删除操作会从 Kubernetes API 中删除 `VolumeSnapshotContent` 对象，同时删除它在外部基础架构中关联存储资产。
<!--
## Volume Snapshot Contents
-->
## 卷快照内容
<!--
Each VolumeSnapshotContent contains a spec, which is the specification of the volume snapshot.
-->
每个 VolumeSnapshotContent 包含一个 spec，用来表示卷快照的规格。
```yaml
apiVersion: snapshot.storage.k8s.io/v1alpha1
kind: VolumeSnapshotContent
metadata:
name: new-snapshot-content-test
spec:
snapshotClassName: csi-hostpath-snapclass
source:
name: pvc-test
kind: PersistentVolumeClaim
volumeSnapshotSource:
csiVolumeSnapshotSource:
creationTime: 1535478900692119403
driver: csi-hostpath
restoreSize: 10Gi
snapshotHandle: 7bdd0de3-aaeb-11e8-9aae-0242ac110002
```
<!--
### Class
-->
### 类
<!--
A VolumeSnapshotContent can have a class, which is specified by setting the
`snapshotClassName` attribute to the name of a
[VolumeSnapshotClass](/docs/concepts/storage/volume-snapshot-classes/).
A VolumeSnapshotContent of a particular class can only be bound to VolumeSnapshots requesting
that class. A VolumeSnapshotContent with no `snapshotClassName` has no class and can only be bound
to VolumeSnapshots that request no particular class.
-->
VolumeSnapshotContent 可以具有一个类，该类通过设置 `snapshotClassName` 属性为 [VolumeSnapshotClass](/docs/concepts/storage/volume-snapshot-classes/) 的名称来指定。一个特定类的 VolumeSnapshotContent 只能够绑定到请求该类的 VolumeSnapshots。没有 `snapshotClassName` 的 VolumeSnapshotContent 没有类，并且只能绑定到不要求特定类的 VolumeSnapshots。
## VolumeSnapshots
<!--
Each VolumeSnapshot contains a spec and a status, which is the specification and status of the volume snapshot.
-->
每个 VolumeSnapshot 对象包含 spec 和 status，用来表示卷快照的规格和状态。
```yaml
apiVersion: snapshot.storage.k8s.io/v1alpha1
kind: VolumeSnapshot
metadata:
name: new-snapshot-test
spec:
snapshotClassName: csi-hostpath-snapclass
source:
name: pvc-test
kind: PersistentVolumeClaim
```
<!--
### Class
-->
### 类
<!--
A volume snapshot can request a particular class by specifying the name of a
[VolumeSnapshotClass](/docs/concepts/storage/volume-snapshot-classes/)
using the attribute `snapshotClassName`.
Only VolumeSnapshotContents of the requested class, ones with the same `snapshotClassName`
as the VolumeSnapshot, can be bound to the VolumeSnapshot.
-->
通过使用 `snapshotClassName` 属性来指定 [VolumeSnapshotClass](/docs/concepts/storage/volume-snapshot-classes/) 的名称，卷快照可以请求特定的类。
只有所请求类（与 VolumeSnapshot 有相同的 `snapshotClassName`）的 VolumeSnapshotContents 才可以绑定到 VolumeSnapshot。
<!--
## Provisioning Volumes from Snapshots
-->
## 从快照供应卷
<!--
You can provision a new volume, pre-populated with data from a snapshot, by using
the *dataSource* field in the `PersistentVolumeClaim` object.
-->
你可以供应一个新卷，该卷预填充了快照中的数据，在 `持久卷声明` 对象中使用 *dataSource* 字段。
<!--
For more details, see
[Volume Snapshot and Restore Volume from Snapshot](/docs/concepts/storage/persistent-volumes/#volume-snapshot-and-restore-volume-from-snapshot-support).
-->
更多详细信息，请参阅 [卷快照和从快照还原卷](/docs/concepts/storage/persistent-volumes/#volume-snapshot-and-restore-volume-from-snapshot-support)。
{{% /capture %}}