Files
LiuDui b8b2cc7c74 ZH-trans: merge release1.16-temporary to master (#18217)
* zh-trans:/docs/docs/concepts/workloads/pods/ephemeral-containers.md (#16948)

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

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* 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

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* 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)

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* 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)

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* 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)

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Add Chinese translation for scheduler-perf-tuning

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Add Chinese translation for scheduler-perf-tuning

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Add Chinese translation for scheduler-perf-tuning

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* 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)

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* 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)

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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

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

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* 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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* pr-release-1.16_enabling-endpoint-slices (#17504)

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* pr-release-1.16_logging (#17491)

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* Revert "update zh trans content/zh/docs/reference/setup-tools/kubeadm/kubeadm… (#17495)" (#17521)

This reverts commit 1134c14e0a39bdc3d1a920ac9797139a6dcccf4b.

* motidy extensions in content/zh/docs/reference/glossary/extensions (#17524)

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* Broken Link (#17546)

Issue available at https://kubernetes.io/zh/docs/concepts/containers/runtime-class/
and introduced by original English documentation (see #17543)

* Update trans kubeadm_upgrade_plan.md (#17395)

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Add back the Original English

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* ZH-trans: fix multiple jump links and update files (#17603)

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* Update container-runtimes.md

* Translate /docs/concepts/workloads/controllers/ttlafterfinished.md into Chinese (#17791)

* Translate /docs/concepts/cluster-administration/cloud-providers.md into Chinese

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* Sorry, wrong commit, roll back...

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* Create trans kubeadm_upgrade_diff.md (#17392)

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* Create _index.md (#17831)

* zh-trans zh-trans-/docs/reference/command-line-tools-reference/feature-gates.md (#17658)

* Update volume-snapshots.md (#17829)

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* Create ovirt.md (#17849)

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* Translate /docs/concepts/cluster-administration/cloud-providers.md into Chinese (#17761)

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* Sorry, wrong commit, roll back...

* Update translation after tengqm's review.

* Update cloud-providers.md

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* translation content/zh/docs/reference/setup-tools/kubeadm/ kubeadm-join-phase、kubeadm-reset-phase (#17881)

* zh-trans content/zh/docs/contribute/generate-ref-docs/contribute-upstream.md (#17882)

* Chinese translation /docs/tasks/administer-cluster/highly-available-master.md (#17884)

* Chinese translation /docs/tasks/administer-cluster/highly-available-master.md

* Apply suggestions from code review

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

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* Create resource-bin-packing.md (#17935)

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服务目录
chenopis
templates/concept 40

{{% capture overview %}} {{< glossary_definition term_id="service-catalog" length="all" prepend="" >}}

服务代理是由开放服务代理 API 规范定义的一组托管服务的终结点,由第三方提供并维护,其中的第三方可以是 AWS,GCP 或 Azure 等云服务提供商。 托管服务的一些示例是 Microsoft Azure Cloud QueueAmazon Simple Queue Service 和 Google Cloud Pub/Sub,但它们是可以使用应用程序的任何软件产品。

使用服务目录,集群操作者可以浏览其提供的托管服务列表,提供托管服务实例并与之绑定,以使其可以被 Kubernetes 集群中的应用程序使用。

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示例用例

应用开发者希望使用消息队列作为其在 Kubernetes 集群中运行的应用程序的一部分。 但是,它们不想承受建立这种服务的开销,也不想自行管理。幸运的是,有一家云服务提供商通过它们的服务代理将消息队列作为托管服务提供。

集群运维人员可以设置服务目录并使用它与云服务提供商的服务代理 通信,以此提供消息队列服务的实例并使其对 Kubernetes 中的应用程序可用。 因此,应用开发者可以不用关心消息队列的实现细节,也不用对其进行管理。它们的应用程序可以简单的将其作为服务使用。

架构

服务目录使用开放服务代理 API 与服务代理进行通信,并作为 Kubernetes API Server 的中介,以便协商首要规定并获取应用程序使用托管服务的必要凭据。

它被实现为一个扩展 API 服务和一个控制器管理器,使用 Etcd 作为存储。它还使用了 Kubernetes 1.7+ 版本中提供的 aggregation layer 来呈现其 API。


Service Catalog Architecture

API 资源

服务目录安装 servicecatalog.k8s.io API 并提供以下 Kubernetes 资源:

  • ClusterServiceBroker:服务目录的集群内代表,封装了它的服务连接细节。集群运维人员创建和管理这些资源,并希望使用该代理服务在集群中提供新类型的托管服务。
  • ClusterServiceClass:由特定服务代理提供的托管服务。当新的 ClusterServiceBroker 资源被添加到集群时,服务目录控制器将连接到服务代理以获取可用的托管服务列表。然后为每个托管服务创建对应的新 ClusterServiceClass 资源。
  • ClusterServicePlan:托管服务的特定产品。例如托管服务可能有不同的计划可用,如免费版本和付费版本,或者可能有不同的配置选项,例如使用 SSD 存储或拥有更多资源。与 ClusterServiceClass 类似,当一个新的 ClusterServiceBroker 被添加到集群时,服务目录会为每个托管服务的每个可用服务计划创建对应的新 ClusterServicePlan 资源。
  • ServiceInstanceClusterServiceClass 提供的示例。由集群运维人员创建,以使托管服务的特定实例可供一个或多个集群内应用程序使用。当创建一个新的 ServiceInstance 资源时,服务目录控制器将连接到相应的服务代理并指示它调配服务实例。
  • ServiceBindingServiceInstance 的访问凭据。由希望其应用程序使用服务 ServiceInstance 的集群运维人员创建。创建之后,服务目录控制器将创建一个 Kubernetes Secret,其中包含服务实例的连接细节和凭据,可以挂载到 Pod 中。

认证

服务目录支持这些认证方法:

使用方式

集群运维人员可以使用服务目录 API 资源来提供托管服务并使其在 Kubernetes 集群内可用。涉及的步骤有:

  1. 列出服务代理提供的托管服务和服务计划。
  2. 配置托管服务的新实例。
  3. 绑定到托管服务,它将返回连接凭证。
  4. 将连接凭证映射到应用程序中。

列出托管服务和服务计划

首先,集群运维人员在 servicecatalog.k8s.io 组内创建一个 ClusterServiceBroker 资源。此资源包含访问服务代理终结点所需的 URL 和连接详细信息。

这是一个 ClusterServiceBroker 资源的例子:

apiVersion: servicecatalog.k8s.io/v1beta1
kind: ClusterServiceBroker
metadata:
  name: cloud-broker
spec:
  # Points to the endpoint of a service broker. (This example is not a working URL.)
  url:  https://servicebroker.somecloudprovider.com/v1alpha1/projects/service-catalog/brokers/default
  #####
  # Additional values can be added here, which may be used to communicate
  # with the service broker, such as bearer token info or a caBundle for TLS.
  #####

下面的顺序图展示了从一个服务代理列出可用托管服务和计划所有涉及的步骤:

List Services

  1. 一旦 ClusterServiceBroker 资源被添加到了服务目录之后,将会触发一个到外部服务代理的 List Services 调用。

  2. 服务代理返回可用的托管服务和服务计划列表,这些列表将本地缓存在 ClusterServiceClassClusterServicePlan 资源中。

  3. 然后集群运维人员可以使用以下命令获取可用托管服务的列表:

     kubectl get clusterserviceclasses -o=custom-columns=SERVICE\ NAME:.metadata.name,EXTERNAL\ NAME:.spec.externalName
    

    它应该输出一个和以下格式类似的服务名称列表:

     SERVICE NAME                           EXTERNAL NAME
     4f6e6cf6-ffdd-425f-a2c7-3c9258ad2468   cloud-provider-service
     ...                                    ...
    

    他们还可以使用以下命令查看可用的服务计划:

     kubectl get clusterserviceplans -o=custom-columns=PLAN\ NAME:.metadata.name,EXTERNAL\ NAME:.spec.externalName
    

    它应该输出一个和以下格式类似的服务计划列表:

     PLAN NAME                              EXTERNAL NAME
     86064792-7ea2-467b-af93-ac9694d96d52   service-plan-name
     ...                                    ...
    

配置一个新实例

集群运维人员 可以通过创建一个 ServiceInstance 资源来启动一个新实例的配置。

这是一个 ServiceInstance 资源的例子:

apiVersion: servicecatalog.k8s.io/v1beta1
kind: ServiceInstance
metadata:
  name: cloud-queue-instance
  namespace: cloud-apps
spec:
  # References one of the previously returned services
  clusterServiceClassExternalName: cloud-provider-service
  clusterServicePlanExternalName: service-plan-name
  #####
  # Additional parameters can be added here,
  # which may be used by the service broker.
  #####

以下顺序图展示了配置托管服务新实例所涉及的步骤:

Provision a Service

  1. 当创建 ServiceInstance 资源时,服务目录将启动一个到外部服务代理的配置实例调用。
  2. 服务代理创建一个托管服务的新实例并返回 HTTP 响应。
  3. 然后集群运维人员可以检查实例的状态是否就绪。

绑定到托管服务

在设置新实例之后,集群运维人员必须绑定到托管服务才能获取应用程序使用服务所需的连接凭据和服务账户的详细信息。该操作通过创建一个 ServiceBinding 资源完成。

以下是 ServiceBinding 资源的示例:

apiVersion: servicecatalog.k8s.io/v1beta1
kind: ServiceBinding
metadata:
  name: cloud-queue-binding
  namespace: cloud-apps
spec:
  instanceRef:
    name: cloud-queue-instance
  #####
  # Additional information can be added here, such as a secretName or
  # service account parameters, which may be used by the service broker.
  #####

以下顺序图展示了绑定到托管服务实例的步骤:

Bind to a managed service

  1. 在创建 ServiceBinding 之后,服务目录调用外部服务代理,请求绑定服务实例所需的信息。
  2. 服务代理为相应服务账户启用应用权限/角色。
  3. 服务代理返回连接和访问托管服务示例所需的信息。这是由提供商和服务特定的,故返回的信息可能因服务提供商和其托管服务而有所不同。

映射连接凭据

完成绑定之后的最后一步就是将连接凭据和服务特定的信息映射到应用程序中。这些信息存储在 secret 中,集群中的应用程序可以访问并使用它们直接与托管服务进行连接。


Map connection credentials

Pod 配置文件

执行此映射的一种方法是使用声明式 Pod 配置。

以下示例描述了如何将服务账户凭据映射到应用程序中。名为 sa-key 的密钥保存在一个名为 provider-cloud-key 的卷中,应用程序会将该卷挂载在 /var/secrets/provider/key.json 路径下。环境变量 PROVIDER_APPLICATION_CREDENTIALS 将映射为挂载文件的路径。

...
    spec:
      volumes:
        - name: provider-cloud-key
          secret:
            secretName: sa-key
      containers:
...
          volumeMounts:
          - name: provider-cloud-key
            mountPath: /var/secrets/provider
          env:
          - name: PROVIDER_APPLICATION_CREDENTIALS
            value: "/var/secrets/provider/key.json"

以下示例描述了如何将 secret 值映射为应用程序的环境变量。在这个示例中,消息队列的主题名从 secret provider-queue-credentials 中名为 topic 的 key 项映射到环境变量 TOPIC 中。

...
          env:
          - name: "TOPIC"
            valueFrom:
                secretKeyRef:
                   name: provider-queue-credentials
                   key: topic

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