![\":link:\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/3-0.png\" "\\":link:\\"")
<\/div>\n\u5efa\u7b51\u56fe<\/h2>\n![\"architecture\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/5-0.png\" "\\"\\"")
<\/div>\n\u4e3b\u63a7\u5236\u5143\u4ef6 (Zh\u01d4<\/h2>\netcd<\/h3>\n
etcd\u662f\u4e00\u79cd\u7528\u4e8e\u6301\u4e45\u5316Kubernetes\u8d44\u6e90\u7684\u9ad8\u53ef\u9760\u6027\u5206\u5e03\u5f0f\u952e\u503c\u5b58\u50a8\u7cfb\u7edf\u3002\u9664\u4e86\u7528\u4e8eKubernetes\u8d44\u6e90\u4e4b\u5916\uff0cetcd\u8fd8\u7528\u4e8e\u4fdd\u5b58SkyDNS\u3001pod-master\u7b49\u5185\u5bb9\uff08etcd\u5b9e\u4f8b\u901a\u5e38\u662f\u72ec\u7acb\u7684\uff09\u3002<\/p>\n
etcd\u306e\u30ad\u30fc\u306f\u30d1\u30b9\u5f62\u5f0f\u306b\u306a\u3063\u3066\u304a\u308a\u3001API Server\u306e–etcd-prefix\u30aa\u30d7\u30b7\u30e7\u30f3(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\/registry)\u3067\u6307\u5b9a\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u4ee5\u4e0b\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002\u3002\u307e\u305f–etcd-servers-overrides\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u30ea\u30bd\u30fc\u30b9\u306e\u7a2e\u985e\u3054\u3068\u306betcd\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u5909\u3048\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u5927\u898f\u6a21\u74b0\u5883\u306b\u304a\u3044\u3066\u306fEvents\u30ea\u30bd\u30fc\u30b9\u306f\u91cf\u304c\u591a\u3044\u305f\u3081\u3001etcd\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5225\u306b\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u8a73\u7d30\u306fKubernetes\u30de\u30cb\u30e5\u30a2\u30eb\u306ekube-apiserver\u3068Using Large Clusters\u306e\u9805\u3092\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n
etcd\u662f\u7531CoreOS\u516c\u53f8\u5f00\u53d1\u7684Linux\u5bb9\u5668\u53d1\u884c\u7248\u3002<\/p>\n
\u8bf7\u53c2\u8003<\/p>\n
https:\/\/github.com\/coreos\/etcd<\/ul>\n\u53c2\u8003\uff1a\u5b58\u50a8\u5728etcd\u4e2d\u7684\u6570\u636e\u793a\u4f8b<\/h4>\n
Kubernetes\u8d44\u6e90\u7684etcd\u952e\u4ee5\u4ee5\u4e0b\u65b9\u5f0f\u5b58\u50a8\u3002<\/p>\n
# etcd\u306e\"\/registry\"\u4ee5\u4e0b\u306e\u30ad\u30fc\u540d\u3092\u8868\u793a<\/span>\r\n$ <\/span>etcdctl ls<\/span> --recursive<\/span> \/registry\r\n# \u30b5\u30f3\u30d7\u30eb\u3092\u629c\u7c8b<\/span>\r\n\/registry\/namespaces\/default\r\n\/registry\/namespaces\/kube-system\r\n\/registry\/secrets\/default\/default-token-qfomx\r\n\/registry\/secrets\/kube-system\/default-token-bf0m1\r\n\/registry\/minions\/172.17.4.101\r\n\/registry\/minions\/172.17.4.201\r\n\/registry\/pods\/kube-system\/kube-controller-manager-172.17.4.101\r\n\/registry\/pods\/kube-system\/heapster-v10-ut5ls\r\n<\/code><\/pre>\nvalue\u4e2d\u76f4\u63a5\u5305\u542b\u7740\u8d44\u6e90\u7684JSON\u5b57\u7b26\u4e32\u3002<\/p>\n
$ <\/span>etcdctl get \/registry\/ranges\/serviceips | jq .<\/span>\r\n{<\/span>\r\n \"kind\"<\/span>: \"RangeAllocation\"<\/span>,\r\n \"apiVersion\"<\/span>: \"v1\"<\/span>,\r\n \"metadata\"<\/span>: {<\/span>\r\n \"creationTimestamp\"<\/span>: null\r\n }<\/span>,\r\n \"range\"<\/span>: \"10.3.0.0\/24\"<\/span>,\r\n \"data\"<\/span>: \"IAAACAAAAAAIAAAAAAAAAAAAAAAAAAABAAAAAAADAQ==\"<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\nKubernetes API\u670d\u52a1\u5668<\/h3>\n
Kubernetes\u306eAPI\u30b5\u30fc\u30d0\u30fc\u3067\u3001\u4e3b\u306bKubernetes\u306e\u30ea\u30bd\u30fc\u30b9\u60c5\u5831\u306e\u7ba1\u7406\u3092\u62c5\u3063\u3066\u3044\u307e\u3059\u3002\u57fa\u672c\u7684\u306b\u30ea\u30bd\u30fc\u30b9\u60c5\u5831\u306eCRUD\u51e6\u7406\u306e\u307f\u3092\u884c\u3044\u3001\u30ea\u30bd\u30fc\u30b9\u306b\u5bfe\u3059\u308b\u5b9f\u969b\u306e\u51e6\u7406\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u306f\u5225\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8(kube-controller-manager\u3068kube-scheduler)\u304c\u884c\u3044\u307e\u3059\u3002\u30ea\u30bd\u30fc\u30b9\u306e\u72b6\u614b\u306f\u3059\u3079\u3066etcd\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002API\u30b5\u30fc\u30d0\u30fc\u4ee5\u5916\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u76f4\u63a5etcd\u3092\u53c2\u7167\u305b\u305a\u3001API\u30b5\u30fc\u30d0\u30fc\u3092\u901a\u3057\u3066\u30ea\u30bd\u30fc\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002kubectl\u30b3\u30de\u30f3\u30c9\u3082\u3001API\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u901a\u3057\u3066\u64cd\u4f5c\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u8a8d\u8a3c\u3001\u8a8d\u53ef\u306e\u4ed6\u306b\u3001Admission Control (\u53c2\u8003: Kubernetes: Admission Control\u3068\u306f\u4f55\u304b) \u3068\u3044\u3046\u30ea\u30af\u30a8\u30b9\u30c8\u5236\u5fa1\u306e\u4ed5\u7d44\u307f\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u8fd9\u662f\u4e00\u4e2a\u80fd\u591f\u8fdb\u884c\u6c34\u5e73\u6269\u5c55\u7684\u7ec4\u4ef6\u3002<\/p>\n
\u8bf7\u60a8\u63d0\u4f9b\u66f4\u591a\u7684\u4e0a\u4e0b\u6587\u6216\u8be6\u7ec6\u7684\u4fe1\u606f\u3002<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kube-apiserver\/<\/ul>\nkube-scheduler
\nKubernetes\u8c03\u5ea6\u5668<\/h3>\n
\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u5c06\u65b0\u521b\u5efa\u7684Pod\u8282\u70b9\u5206\u914d\u7684\u8c03\u5ea6\u5668\u3002\u5b83\u901a\u8fc7Kubernetes API\u76d1\u542cPod\u3001Node\u7b49\u8d44\u6e90\uff0c\u5e76\u901a\u8fc7bindings API\u5c06Node\u4e0ePod\u7ed1\u5b9a\u3002\u8c03\u5ea6\u5668\u7684\u7b56\u7565\u662f\u53ef\u914d\u7f6e\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u542f\u52a8\u9009\u9879–policy-config-file\u6307\u5b9a\u914d\u7f6e\u7684json\u6587\u4ef6\u3002\uff08\u53c2\u8003\uff1ascheduler-policy-config.json\uff09<\/p>\n
\u53c2\u8003<\/p>\n
https:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/docs\/devel\/scheduler.md<\/ul>\nKube\u63a7\u5236\u5668\u7ba1\u7406\u5668<\/h3>\n
\u8fd9\u4e2a\u7ba1\u7406\u5668\u7528\u4e8e\u542f\u52a8\u5404\u79cd\u8d44\u6e90\u7684\u63a7\u5236\u5668\uff0c\u4f8b\u5982 Replication Controller\u3002\u6bcf\u4e2a\u63a7\u5236\u5668\u90fd\u5728 goroutine \u4e2d\u542f\u52a8\u3002(\u53c2\u8003: controllermanager.go#L185-L390)\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e Replication Controller \u7684\u8d44\u6e90\u540d\u79f0\u672c\u8eab\u5c31\u5e26\u6709 “Controller”\uff0c\u56e0\u6b64\u63a7\u5236\u5668\u88ab\u547d\u540d\u4e3a “RepplicationManager”\u3002(\u53c2\u8003: replication_controller.go#L63-L64\u7684\u8bc4\u8bba)<\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528pprof\u67e5\u770bkube-controller-manager\u7684\u63a7\u5236\u5668\u5904\u7406\u7a0b\u5e8f\u7684\u542f\u52a8goroutine\u7684\u5217\u8868\u3002<\/p>\n
k8s.io\/kubernetes\/pkg\/controller\/daemon.(*DaemonSetsController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/deployment.(*DeploymentController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/endpoint.(*EndpointController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/gc.(*GCController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/job.(*JobController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/namespace.(*NamespaceController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/node.(*NodeController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/persistentvolume.(*PersistentVolumeClaimBinder).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/persistentvolume.(*PersistentVolumeRecycler).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/podautoscaler.(*HorizontalController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/replicaset.(*ReplicaSetController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/replication.(*ReplicationManager).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/resourcequota.(*ResourceQuotaController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/serviceaccount.(*ServiceAccountsController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/serviceaccount.(*TokensController).Run\r\n<\/code><\/pre>\n\u4ec5\u9700\u4e00\u79cd\u9009\u9879\uff0c\u8bf7\u539f\u751f\u4e2d\u6587\u6539\u8ff0\u4ee5\u4e0b\u5185\u5bb9\uff1a
\n\u53c2\u8003<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kube-controller-manager\/<\/ul>\n\u8282\u70b9\u7ec4\u4ef6<\/h2>\nkubelet\uff08\u8d8a\u72f1\u8005\uff09<\/h3>\n
kubelet\u662f\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\u7684\u4ee3\u7406\u7a0b\u5e8f\uff0c\u8d1f\u8d23\u542f\u52a8\u548c\u7ba1\u7406\u8282\u70b9\u7684\u4e3b\u8981\u8fdb\u7a0b\uff0c\u5373Pod\u3002\u5b83\u4e3b\u8981\u901a\u8fc7\u76d1\u89c6API\u670d\u52a1\u5668\u4ee5\u67e5\u770b\u5206\u914d\u7ed9\u81ea\u5df1\u8282\u70b9\u7684Pod\u4fe1\u606f\u6765\u542f\u52a8Pod\uff0c\u9664\u6b64\u4e4b\u5916\u8fd8\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\u3002\u4f7f\u7528\u8fd9\u79cd\u673a\u5236\u53ef\u4ee5\u5728kubelet\u4e0a\u8fd0\u884c\u5305\u62ecAPI\u670d\u52a1\u5668\u5728\u5185\u7684Master\u7ec4\u4ef6\u3002<\/p>\n
\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb \u30ce\u30fc\u30c9\u306e\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea(\u4f8b\u3048\u3070\/etc\/kubernetes\/manifests)\u3092\u76e3\u8996\u3057\u3001\u305d\u3053\u306b\u7f6e\u304b\u308c\u305f\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304b\u308c\u305fPod\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u76e3\u8996\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306f–config\u30aa\u30d7\u30b7\u30e7\u30f3\u3001\u76e3\u8996\u9593\u9694\u306f–file-check-frequency\u30aa\u30d7\u30b7\u30e7\u30f3(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f20\u79d2)\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
HTTP\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8 \u7279\u5b9a\u306eURL\u3092\u76e3\u8996\u3057\u3001\u305d\u3053\u306b\u7f6e\u304b\u308c\u305f\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304b\u308c\u305fPod\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u76e3\u8996\u3059\u308bURL\u306f–manifest-url\u30aa\u30d7\u30b7\u30e7\u30f3\u3001\u76e3\u8996\u9593\u9694\u306f–http-check-frequency=\u30aa\u30d7\u30b7\u30e7\u30f3(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f20\u79d2)\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
HTTP\u30b5\u30fc\u30d0\u30fc Kubelet\u81ea\u4f53\u6301\u3064\u306eHTTP\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3066\u3001\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
\u8bf7\u63d0\u4f9b\u66f4\u591a\u4e0a\u4e0b\u6587\u4ee5\u4fbf\u8fdb\u884c\u7ffb\u8bd1\u3002<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kubelet\/<\/ul>\nkube-proxy<\/h3>\n
kube-proxy\u662f\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\u7684\u7f51\u7edc\u4ee3\u7406\uff0c\u7528\u4e8e\u4f20\u8f93Service\u5177\u6709\u7684\u865a\u62dfCluster IP\u3002\u76ee\u524d\u53ea\u652f\u6301\u8f6e\u8be2\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n
\u6709\u4e24\u79cd\u6a21\u5f0f\u53ef\u4ee5\u4f7f\u7528iptables\uff0c\u4e00\u79cd\u662f\u4f7f\u7528iptables\u6a21\u5f0f\u7684\u9ad8\u901f\u6a21\u5f0f\uff0c\u53e6\u4e00\u79cd\u662f\u5728\u7528\u6237\u7a7a\u95f4\u8fdb\u884c\u5904\u7406\u7684userspace\u6a21\u5f0f\u3002\u53ef\u4ee5\u901a\u8fc7\u542f\u52a8\u65f6\u7684–proxy-mode\u9009\u9879\u8fdb\u884c\u6307\u5b9a\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u9009\u9879\uff0c\u5219\u5982\u679c\u53ef\u7528\uff0ciptables\u5c06\u88ab\u9ed8\u8ba4\u9009\u62e9\u3002\u8fd8\u53ef\u4ee5\u4f7f\u7528\u8282\u70b9\u7684\u6ce8\u91canet.experimental.kubernetes.io\/proxy-mode\u6765\u5bf9\u6bcf\u4e2a\u8282\u70b9\u8fdb\u884c\u8bbe\u7f6e\u3002\u5982\u679c\u4f7f\u7528iptables\u6a21\u5f0f\uff0c\u5faa\u73af\u8f6e\u8be2\u5c06\u7531static\u6a21\u5757\u6267\u884c\u3002<\/p>\n
\u53c2\u7167<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kube-proxy\/<\/ul>\n\u5176\u4ed6\u7ec4\u4ef6<\/h2>\n\u8d85\u7ea7kube\uff08\u4e00\u4f53\u5316\u4e8c\u8fdb\u5236\u6587\u4ef6\uff09<\/h3>\n
Hyperkube\u662f\u5c06\u4e0eKubernetes\u76f8\u5173\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u5408\u5e76\u4e3a\u4e00\u4e2a\u7684\u201c\u4e00\u4f53\u5316\u201d\u4e8c\u8fdb\u5236\u6587\u4ef6\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u7ec4\u4ef6\u540d\u79f0\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u6765\u4f7f\u7528\u5b83\u3002\u6b64\u5916\uff0c\u60a8\u8fd8\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3a\u7ec4\u4ef6\u540d\u79f0\u7684\u7b26\u53f7\u94fe\u63a5\u7c7b\u4f3c\u4e8ebusybox\u6765\u4f7f\u7528\u3002<\/p>\n
\u6bcf\u4e2aKubernetes\u53d1\u5e03\u7684\u7248\u672c\u90fd\u4f1a\u66f4\u65b0Docker\u955c\u50cf(gcr.io\/google_containers\/hyperkube-amd64)\uff0c\u5982\u679c\u8981\u5728kubelet\u4e0a\u8fd0\u884cKubernetes\u7ec4\u4ef6\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528hyperkube\u7684Docker\u955c\u50cf\uff08\u4f8b\u5982\uff0cMaster\u7ec4\u4ef6\u7684\u5b9a\u4e49\u6587\u4ef6master.json\uff09\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u5bf9\u5e94\u7684\u7ec4\u4ef6\uff08\u62ec\u53f7\u5185\u4e3a\u539f\u59cb\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u540d\uff09\u3002<\/p>\n
\n- \n
kubectl (kubectl)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
apiserver (kube-apisever)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
controller-manager (kube-controller-manager)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
scheduler (kube-scheduler)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
kubelet (kubelet)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
proxy (kube-proxy)<\/ul>\n
$ <\/span>hyperkube kubectl get nodes\r\n<\/code><\/pre>\n\u8bf7\u53c2\u8003\u6b64\u94fe\u63a5\uff1ahttps:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/cmd\/hyperkube\/main.go<\/p>\n
\u6682\u505c\u5bb9\u5668<\/h3>\n
\u6682\u505c\u5bb9\u5668\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u5bb9\u5668\uff0c\u5b83\u4fdd\u5b58\u7740 Pod \u5185\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\u7684\u4fe1\u606f\uff0c\u5e76\u81ea\u52a8\u5730\u6dfb\u52a0\u5230\u6240\u6709\u7684 Pod \u4e2d\u3002\u5728 Kubernetes \u5185\u90e8\uff0c\u5b83\u4ee5\u5e38\u91cf PodInfraContainerImage \u8fdb\u884c\u7279\u6b8a\u5904\u7406\uff0c\u53ea\u6709\u6682\u505c\u5bb9\u5668\u4f1a\u4fdd\u5b58 Pod \u5185\u7684\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\u4fe1\u606f\uff0c\u800c\u5176\u4ed6\u5bb9\u5668\u5219\u91c7\u53d6\u5171\u4eab\u8be5\u4fe1\u606f\u7684\u65b9\u5f0f\uff08\u53c2\u8003\uff1apkg\/kubelet\/dockertools\/manager.go\uff09\u3002\u8fd9\u6837\uff0c\u5373\u4f7f Pod \u7684\u5176\u4ed6\u5bb9\u5668\u88ab\u7ec8\u6b62\uff0c\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\u7684\u4fe1\u606f\u4ecd\u7136\u53ef\u88ab\u4fdd\u7559\u3002\u6682\u505c\u5bb9\u5668\u672c\u8eab\u53ea\u9700\u8c03\u7528 pause \u7cfb\u7edf\u8c03\u7528\u800c\u4e0d\u505a\u4efb\u4f55\u5176\u4ed6\u64cd\u4f5c\uff08\u53c2\u8003\uff1apause.asm#L47\uff09\u3002\u53ef\u4ee5\u4f7f\u7528 kubelet \u7684 –pod-infra-container-image \u9009\u9879\u6765\u66f4\u6539\u6682\u505c\u5bb9\u5668\u7684\u955c\u50cf\u3002\uff08\u53c2\u8003: pause.asm#L47\uff09\u3002<\/p>\n
\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/kubernetes\/tree\/master\/third_party\/pause<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
Containers at Google > What is the role of ‘pause’ container?<\/ul>\n\u589e\u503c\u7ec4\u4ef6<\/h2>\n\u64ad\u5ba2\u5927\u5e08<\/h3>\n
pod-master\u662f\u4e00\u4e2a\u5bb9\u5668\uff0c\u7528\u4e8e\u5728High-Availability\u914d\u7f6e\u4e2d\u534f\u8c03kube-scheduler\u548ckube-controller-manager\u5728\u54ea\u4e2aMaster\u4e0a\u8fd0\u884c\u3002\u5b83\u4f7f\u7528etcd\u8fdb\u884c\u7b80\u5355\u7684\u9501\u5b9a\u673a\u5236\uff0c\u5e76\u4e14\u662f\u4e00\u4e2a\u5927\u7ea6200\u884cgo\u7a0b\u5e8f\uff08\u53c2\u8003podmaster.go\uff09\u3002\u901a\u8fc7\u83b7\u53d6\u9501\u5b9a\u7684Master\u670d\u52a1\u5668\u6765\u53cd\u6620\u672c\u5730\u7684\u6e05\u5355\u6587\u4ef6\uff0c\u4ee5\u8c03\u6574kube-scheduler\u548ckube-controller-manager\u5728\u54ea\u4e2aMaster\u4e0a\u8fd0\u884c\u3002\u53ef\u4ee5\u53c2\u8003kubernetes\u5b58\u50a8\u5e93\u4e2d\u7684docs\/admin\/high-availability\u4e2d\u7684podmaster.yaml\u914d\u7f6e\u793a\u4f8b\u3002<\/p>\n
\u9274\u4e8ekube-scheduler\u548ckube-controller-manager\u672c\u8eab\u5df2\u5b9e\u73b0\u4e86\u9886\u5bfc\u8005\u9009\u4e3e\u529f\u80fd\uff08–leader-elect\u9009\u9879\uff09\uff0c\u56e0\u6b64\u5c06\u6765\u53ef\u80fd\u4f1a\u4e0d\u518d\u9700\u8981\u8fd9\u4e9b\u7ec4\u4ef6\u3002\uff08\u53c2\u8003 pkg\/client\/leaderelection\uff09<\/p>\n
\u53c2\u8003\u6587\u732e<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/contrib\/tree\/master\/pod-master<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
http:\/\/kubernetes.io\/docs\/admin\/high-availability\/<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Issue: leaderelection: retrofit controller-manager with leaderelection client #19621<\/ul>\n<\/li>\n<\/ul>\nIssue: retrofit the scheduler with the leader election client. #19347<\/p>\n
kube-dns \u53ef\u4f2fDNS<\/h3>\n
kube-dns\u662f\u96c6\u7fa4\u5185DNS Pod\u7684\u540d\u79f0\u3002\u5f53\u521b\u5efaService\u8d44\u6e90\u65f6\uff0c\u4f1a\u5c06\u5176\u6ce8\u518c\u5230kube-dns\u4e2d\uff0c\u4ee5\u4fbf\u4ece\u96c6\u7fa4\u5185\u90e8\u8fdb\u884c\u540d\u79f0\u89e3\u6790\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528cluster.local\u57df\u3002Service\u4ee5{Service\u540d\u79f0}.{\u547d\u540d\u7a7a\u95f4}.svc.cluster.local\u7684\u683c\u5f0f\u6ce8\u518c\u5230A\u8bb0\u5f55\u548cSRV\u8bb0\u5f55\u4e2d\u3002<\/p>\n
kube-dns\u306ePod\u306f\u4ee5\u4e0b\u306e4\u30b3\u30f3\u30c6\u30ca\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
skydns DNS\u30b5\u30fc\u30d0\u30fc<\/p>\n
etcd skydns\u306e\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u5c02\u7528etcd<\/p>\n
kube2sky SkyDNS\u306bKubernetes\u306e\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u308b\u30d6\u30ea\u30c3\u30b8<\/p>\n
healthz \u5b9a\u671f\u7684\u306bnslookup\u3057\u3066\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046<\/p>\n
\u53ef\u4ee5\u770b\u770b<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/kubernetes\/tree\/master\/cluster\/addons\/dns<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/dns\/<\/ul>\n\u5929\u7a7aDNS<\/h3>\n
\u8fd9\u662f\u4f5c\u4e3a\u96c6\u7fa4\u5185DNS\u4f7f\u7528\u7684DNS\u670d\u52a1\u5668\uff08kube-dns\u7684\u4e00\u90e8\u5206\uff09\u3002etcd\u7528\u4e8e\u6570\u636e\u6301\u4e45\u5316\u3002<\/p>\n
\u53c2\u8003<\/p>\n
https:\/\/github.com\/skynetservices\/skydns<\/ul>\nkube2sky \u79d1\u6bd4\u5c0d\u5929<\/h3>\n
SkyDNS\u306bKubernetes\u306e\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u308b\u30d6\u30ea\u30c3\u30b8\u3067\u3059\u3002Kubernetes\u306eAPI\u3067Service, Endpoints, Pod\u3092watch\u3057\u3001SkyDNS\u306eetcd\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067DNS\u306e\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u307e\u3059\u3002<\/p>\n
\u8bf7\u53c2\u8003<\/p>\n
https:\/\/github.com\/kubernetes\/kubernetes\/tree\/master\/cluster\/addons\/dns\/kube2sky<\/ul>\n\u5806\u53f2\u7279 (du\u012b sh\u01d0 t\u00e8)<\/h3>\n
Heapster\u662f\u4e00\u4e2a\u7528\u4e8e\u6c47\u603b\u96c6\u7fa4\u6574\u4f53\u4f7f\u7528\u60c5\u51b5\u7684\u7ec4\u4ef6\u3002\u5b58\u50a8\u662f\u53ef\u63d2\u62d4\u7684\u673a\u5236\uff0c\u5e76\u652f\u6301\u591a\u79cd\u5b58\u50a8\uff0c\u5982InfluxDB\u3001Google Cloud Monitoring\u3001Kafka\u7b49\u3002<\/p>\n
![\"heapster\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/79-0.png\" "\\"\\"")
<\/div>\n\u5f15\u7528\u81eahttp:\/\/blog.kubernetes.io\/2015\/05\/resource-usage-monitoring-kubernetes.html\u7684\u56fe\u8868\u4e2d\u663e\u793a<\/p><\/blockquote>\n
\u8fd8\u6709\u4e00\u4e2a\u540d\u4e3akubedash\u7684\u6027\u80fd\u5206\u6790\u754c\u9762\u7684\u9879\u76ee\u4e5f\u5b58\u5728\u3002<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/heapster<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
http:\/\/blog.kubernetes.io\/2015\/05\/resource-usage-monitoring-kubernetes.html<\/ul>\nHelm \uff08\u90e8\u7f72\u7ba1\u7406\u5668\uff09<\/h3>\n
Helm\u662f\u4e00\u4e2a\u80fd\u591f\u5c06Kubernetes\u914d\u7f6e\u6a21\u677f\u5316\u5e76\u8f7b\u677e\u7ba1\u7406\u90e8\u7f72\u7684\u673a\u5236\u3002\u8fd9\u4e9b\u6a21\u677f\u88ab\u79f0\u4e3aCharts\uff0c\u5b98\u65b9\u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3akubernetes\/charts\u7684\u6a21\u677f\u5b58\u50a8\u5e93\u3002\u76ee\u524d\u770b\u6765\uff0c\u5b83\u4ecd\u5904\u4e8e\u5f00\u53d1\u9636\u6bb5\u3002\u53ef\u4ee5\u5c06\u5176\u60f3\u8c61\u4e3a\u7c7b\u4f3c\u4e8eHomebrew\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5728\u4e0d\u7f16\u5199Kubernetes\u914d\u7f6e\u6587\u4ef6\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u90e8\u7f72\u3002<\/p>\n
$ <\/span>helm install <\/span>redis-cluster\r\n# replication controller\u3084service\u304c\u4f5c\u3089\u308c\u308b<\/span>\r\n<\/code><\/pre>\n\u770b\u8d77\u6765\u4f7f\u7528\u4e86\u540d\u4e3aJinja\u7684\u6a21\u677f\uff0c\u53ef\u4ee5\u5c55\u5f00\u548c\u81ea\u5b9a\u4e49Kubernetes\u7684\u5404\u79cd\u8bbe\u7f6e\u6587\u4ef6\uff08\u4f8b\u5982redis.jinja\uff09\u7684\u673a\u5236\u3002<\/p>\n
\u3082\u3068\u3082\u3068\u306fDeis\u306eHelm\u3068\u3044\u3046\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u3001Kubernetes\u30c1\u30fc\u30e0\u304c\u958b\u767a\u3059\u308bdeployment-manager(dm)\u3068\u3044\u30462\u3064\u306e\u30c4\u30fc\u30eb\u304c\u3042\u3063\u305f\u3088\u3046\u3067\u3059\u3002Integrate helm and dm #171\u3068\u3044\u3046Issue\u306b\u3088\u308b\u3068\u3001\u30cf\u30c3\u30ab\u30bd\u30f3\u3067\u3053\u306e2\u3064\u3092\u7d71\u5408\u3059\u308b\u3068\u6c7a\u3081\u305f\u3089\u3057\u304f\u3001\u30ec\u30dd\u30b8\u30c8\u30ea\u540d\u3082”deployment-manager”\u304b\u3089”helm”\u306b\u5909\u66f4\u3057\u305f\u3088\u3046\u3067\u3059\u3002<\/p>\n
\n- \n
http:\/\/kubernetes.io\/docs\/admin\/cluster-components\/<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
https:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/docs\/design\/architecture.md<\/ul>\n\u7528\u6237\u754c\u9762 (User Interface)<\/h2>\n\u4eea\u8868\u76d8<\/h3>\n
dashboard\u306fKubernetes\u306e\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002kube-ui\u3088\u308a\u3082\u65b0\u3057\u304f\u3001kube-ui\u3092\u7f6e\u304d\u63db\u3048\u308b\u3082\u306e\u3067\u3059\u3002\u73fe\u72b6\u3067\u306fUI\u4e0a\u304b\u3089\u306e\u30c7\u30d7\u30ed\u30a4\u3084\u3001Pod\u306e\u4e00\u89a7\u3084\u8a73\u7d30\u60c5\u5831\u306e\u8868\u793a\u306a\u3069\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306f\u516c\u5f0f\u306e\u30e6\u30fc\u30b6\u30fc\u30ac\u30a4\u30c9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u7531\u4e8e\u63d0\u4f9b\u4e86yaml\u6587\u4ef6\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u90e8\u7f72\u3002<\/p>\n
# \u30c7\u30d7\u30ed\u30a4<\/span>\r\n$ <\/span>kubectl create -f<\/span> https:\/\/raw.githubusercontent.com\/kubernetes\/dashboard\/master\/src\/deploy\/kubernetes-dashboard.yaml\r\n# UI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306bproxy\u3092\u7acb\u3061\u4e0a\u3052\u3066\u304a\u304f<\/span>\r\n$ <\/span>kubectl proxy\r\n<\/code><\/pre>\nkubectl proxy\u3067proxy\u3092\u7acb\u3066\u308b\u3053\u3068\u3067\u3001 http:\/\/127.0.0.1:8001\/api\/v1\/proxy\/namespaces\/kube-system\/services\/kubernetes-dashboard\/
\n\u3067dashboard\u306eUI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
![\"dashboard.png\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/95-0.png\" "\\"\\"")
<\/div>\n\u8bf7\u53c2\u7167\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n
https:\/\/github.com\/kubernetes\/dashboard<\/ul>\nKube-UI \u7684\u4e2d\u6587\u91ca\u4e49\u662f\u4ec0\u4e48\uff1f<\/h3>\n
kube-ui\u662f\u4e00\u4e2a\u65e7\u7248\u672c\u7684Kubernetes\u4eea\u8868\u76d8\u3002\u5f53\u524d\u6700\u65b0\u7248\u672c\u7684\u4eea\u8868\u76d8\u5df2\u5177\u5907\u751f\u4ea7\u5c31\u7eea\u6761\u4ef6\uff0c\u6240\u4ee5kube-ui\u5c06\u5f88\u5feb\u88ab\u6dd8\u6c70\u3002<\/p>\n
![\"kube-ui.png\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/100-0.png\" "\\"\\"")
<\/div>\n1. \u8bf7\u53c2\u8003\u4e00\u4e0b\u3002
\n2. \u8bf7\u770b\u770b\u8fd9\u4e2a\u53c2\u8003\u3002
\n3. \u8bf7\u60a8\u68c0\u67e5\u4e00\u4e0b\u8fd9\u4e2a\u53c2\u8003\u3002
\n4. \u8fd9\u662f\u4e00\u4e2a\u4f9b\u60a8\u53c2\u8003\u7684\u3002<\/p>\n
https:\/\/github.com\/kubernetes\/kube-ui<\/ul>\nKubedash \u9177\u58f3<\/h3>\n
\u8fd9\u662f\u4e00\u4e2a\u663e\u793aKubernetes\u6027\u80fd\u4fe1\u606f\u7684\u4eea\u8868\u677f\uff0c\u5b83\u5229\u7528Heapster\u63d0\u4f9b\u7684\u4fe1\u606f\u3002\u60a8\u53ef\u4ee5\u67e5\u770b\u6574\u4e2a\u96c6\u7fa4\u7684\u4fe1\u606f\uff0c\u4ee5\u53ca\u6bcf\u4e2a\u8282\u70b9\u548c\u6bcf\u4e2a\u547d\u540d\u7a7a\u95f4\u7684CPU\u548c\u5185\u5b58\u4f7f\u7528\u7387\u3002<\/p>\n
\u6709\u4e00\u4efdyaml\u6587\u4ef6\u53ef\u7528\uff0c\u60a8\u53ef\u4ee5\u7b80\u5355\u5730\u6839\u636e\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u90e8\u7f72\u3002<\/p>\n
# \u30c7\u30d7\u30ed\u30a4<\/span>\r\n$ <\/span>kubectl create -f<\/span> https:\/\/raw.githubusercontent.com\/kubernetes\/kubedash\/master\/deploy\/bundle.yaml\r\n# UI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306bproxy\u3092\u7acb\u3061\u4e0a\u3052\u3066\u304a\u304f<\/span>\r\n$ <\/span>kubectl proxy\r\n<\/code><\/pre>\n\u901a\u8fc7\u4f7f\u7528kubectl proxy\u547d\u4ee4\uff0c\u5728http:\/\/127.0.0.1:8001\/api\/v1\/proxy\/namespaces\/kube-system\/services\/kubedash\/#!\/ \u4e0a\u53ef\u4ee5\u8bbf\u95eekubedash\u7684\u7528\u6237\u754c\u9762\u3002<\/p>\n
![\"image\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/108-0.png\" "\\"\\"")
<\/div>\n\u53c2\u8003\u4ee5\u4e0b\u5185\u5bb9\u5e76\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\u3002\u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff1a<\/p>\n
– \u8bf7\u53c2\u8003\u4ee5\u4e0b\u4fe1\u606f\u3002
\n– \u8bf7\u6839\u636e\u4ee5\u4e0b\u5185\u5bb9\u8fdb\u884c\u53c2\u8003\u3002
\n– \u8bf7\u53c2\u7167\u4e0b\u8ff0\u4fe1\u606f\u3002
\n– \u8bf7\u53c2\u8003\u4e0b\u5217\u5185\u5bb9\u3002
\n– \u8bf7\u8003\u8651\u4e0b\u5217\u53c2\u8003\u3002<\/p>\n
https:\/\/github.com\/kubernetes\/kubedash<\/ul>\n","protected":false},"excerpt":{"rendered":"\u6211\u6574\u7406\u4e86Kubernetes\u7684\u914d\u7f6e\u7ec4\u4ef6\u6e05\u5355\u3002\u8fd9\u662f\u57fa\u4e8eKubernetes 1.2\u7248\u672c\u7684\u4fe1\u606f\u3002 \u7ec4\u4ef6\u5217\u8868 \u8bf4\u660e\uff1a […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-35635","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
Kubernetes: \u6784\u6210\u7ec4\u4ef6\u6e05\u5355 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-\u6784\u6210\u7ec4\u4ef6\u6e05\u5355\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kubernetes: \u6784\u6210\u7ec4\u4ef6\u6e05\u5355\" \/>\n<meta property=\"og:description\" content=\"\u6211\u6574\u7406\u4e86Kubernetes\u7684\u914d\u7f6e\u7ec4\u4ef6\u6e05\u5355\u3002\u8fd9\u662f\u57fa\u4e8eKubernetes 1.2\u7248\u672c\u7684\u4fe1\u606f\u3002 \u7ec4\u4ef6\u5217\u8868 \u8bf4\u660e\uff1a […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-\u6784\u6210\u7ec4\u4ef6\u6e05\u5355\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-31T20:16:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-30T07:45:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/3-0.png\" \/>\n<meta name=\"author\" content=\"\u6e05, \u5b87\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6e05, \u5b87\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-%e6%9e%84%e6%88%90%e7%bb%84%e4%bb%b6%e6%b8%85%e5%8d%95\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-%e6%9e%84%e6%88%90%e7%bb%84%e4%bb%b6%e6%b8%85%e5%8d%95\/\",\"name\":\"Kubernetes: \u6784\u6210\u7ec4\u4ef6\u6e05\u5355 - 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<\/div>\n\u4e3b\u63a7\u5236\u5143\u4ef6 (Zh\u01d4<\/h2>\netcd<\/h3>\n
etcd\u662f\u4e00\u79cd\u7528\u4e8e\u6301\u4e45\u5316Kubernetes\u8d44\u6e90\u7684\u9ad8\u53ef\u9760\u6027\u5206\u5e03\u5f0f\u952e\u503c\u5b58\u50a8\u7cfb\u7edf\u3002\u9664\u4e86\u7528\u4e8eKubernetes\u8d44\u6e90\u4e4b\u5916\uff0cetcd\u8fd8\u7528\u4e8e\u4fdd\u5b58SkyDNS\u3001pod-master\u7b49\u5185\u5bb9\uff08etcd\u5b9e\u4f8b\u901a\u5e38\u662f\u72ec\u7acb\u7684\uff09\u3002<\/p>\n
etcd\u306e\u30ad\u30fc\u306f\u30d1\u30b9\u5f62\u5f0f\u306b\u306a\u3063\u3066\u304a\u308a\u3001API Server\u306e–etcd-prefix\u30aa\u30d7\u30b7\u30e7\u30f3(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f\/registry)\u3067\u6307\u5b9a\u3057\u305f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u4ee5\u4e0b\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002\u3002\u307e\u305f–etcd-servers-overrides\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u30ea\u30bd\u30fc\u30b9\u306e\u7a2e\u985e\u3054\u3068\u306betcd\u306e\u30b5\u30fc\u30d0\u30fc\u3092\u5909\u3048\u308b\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002\u5927\u898f\u6a21\u74b0\u5883\u306b\u304a\u3044\u3066\u306fEvents\u30ea\u30bd\u30fc\u30b9\u306f\u91cf\u304c\u591a\u3044\u305f\u3081\u3001etcd\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u5225\u306b\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u8a73\u7d30\u306fKubernetes\u30de\u30cb\u30e5\u30a2\u30eb\u306ekube-apiserver\u3068Using Large Clusters\u306e\u9805\u3092\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n
etcd\u662f\u7531CoreOS\u516c\u53f8\u5f00\u53d1\u7684Linux\u5bb9\u5668\u53d1\u884c\u7248\u3002<\/p>\n
\u8bf7\u53c2\u8003<\/p>\n
- https:\/\/github.com\/coreos\/etcd<\/ul>\n
\u53c2\u8003\uff1a\u5b58\u50a8\u5728etcd\u4e2d\u7684\u6570\u636e\u793a\u4f8b<\/h4>\n
Kubernetes\u8d44\u6e90\u7684etcd\u952e\u4ee5\u4ee5\u4e0b\u65b9\u5f0f\u5b58\u50a8\u3002<\/p>\n
# etcd\u306e\"\/registry\"\u4ee5\u4e0b\u306e\u30ad\u30fc\u540d\u3092\u8868\u793a<\/span>\r\n$ <\/span>etcdctl ls<\/span> --recursive<\/span> \/registry\r\n# \u30b5\u30f3\u30d7\u30eb\u3092\u629c\u7c8b<\/span>\r\n\/registry\/namespaces\/default\r\n\/registry\/namespaces\/kube-system\r\n\/registry\/secrets\/default\/default-token-qfomx\r\n\/registry\/secrets\/kube-system\/default-token-bf0m1\r\n\/registry\/minions\/172.17.4.101\r\n\/registry\/minions\/172.17.4.201\r\n\/registry\/pods\/kube-system\/kube-controller-manager-172.17.4.101\r\n\/registry\/pods\/kube-system\/heapster-v10-ut5ls\r\n<\/code><\/pre>\nvalue\u4e2d\u76f4\u63a5\u5305\u542b\u7740\u8d44\u6e90\u7684JSON\u5b57\u7b26\u4e32\u3002<\/p>\n
$ <\/span>etcdctl get \/registry\/ranges\/serviceips | jq .<\/span>\r\n{<\/span>\r\n \"kind\"<\/span>: \"RangeAllocation\"<\/span>,\r\n \"apiVersion\"<\/span>: \"v1\"<\/span>,\r\n \"metadata\"<\/span>: {<\/span>\r\n \"creationTimestamp\"<\/span>: null\r\n }<\/span>,\r\n \"range\"<\/span>: \"10.3.0.0\/24\"<\/span>,\r\n \"data\"<\/span>: \"IAAACAAAAAAIAAAAAAAAAAAAAAAAAAABAAAAAAADAQ==\"<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\nKubernetes API\u670d\u52a1\u5668<\/h3>\n
Kubernetes\u306eAPI\u30b5\u30fc\u30d0\u30fc\u3067\u3001\u4e3b\u306bKubernetes\u306e\u30ea\u30bd\u30fc\u30b9\u60c5\u5831\u306e\u7ba1\u7406\u3092\u62c5\u3063\u3066\u3044\u307e\u3059\u3002\u57fa\u672c\u7684\u306b\u30ea\u30bd\u30fc\u30b9\u60c5\u5831\u306eCRUD\u51e6\u7406\u306e\u307f\u3092\u884c\u3044\u3001\u30ea\u30bd\u30fc\u30b9\u306b\u5bfe\u3059\u308b\u5b9f\u969b\u306e\u51e6\u7406\u3084\u30b9\u30b1\u30b8\u30e5\u30fc\u30ea\u30f3\u30b0\u306f\u5225\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8(kube-controller-manager\u3068kube-scheduler)\u304c\u884c\u3044\u307e\u3059\u3002\u30ea\u30bd\u30fc\u30b9\u306e\u72b6\u614b\u306f\u3059\u3079\u3066etcd\u306b\u4fdd\u5b58\u3055\u308c\u307e\u3059\u3002API\u30b5\u30fc\u30d0\u30fc\u4ee5\u5916\u306e\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u306f\u76f4\u63a5etcd\u3092\u53c2\u7167\u305b\u305a\u3001API\u30b5\u30fc\u30d0\u30fc\u3092\u901a\u3057\u3066\u30ea\u30bd\u30fc\u30b9\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002kubectl\u30b3\u30de\u30f3\u30c9\u3082\u3001API\u30b5\u30fc\u30d0\u30fc\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u901a\u3057\u3066\u64cd\u4f5c\u3092\u884c\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u8a8d\u8a3c\u3001\u8a8d\u53ef\u306e\u4ed6\u306b\u3001Admission Control (\u53c2\u8003: Kubernetes: Admission Control\u3068\u306f\u4f55\u304b) \u3068\u3044\u3046\u30ea\u30af\u30a8\u30b9\u30c8\u5236\u5fa1\u306e\u4ed5\u7d44\u307f\u3092\u5099\u3048\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u8fd9\u662f\u4e00\u4e2a\u80fd\u591f\u8fdb\u884c\u6c34\u5e73\u6269\u5c55\u7684\u7ec4\u4ef6\u3002<\/p>\n
\u8bf7\u60a8\u63d0\u4f9b\u66f4\u591a\u7684\u4e0a\u4e0b\u6587\u6216\u8be6\u7ec6\u7684\u4fe1\u606f\u3002<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kube-apiserver\/<\/ul>\nkube-scheduler
\nKubernetes\u8c03\u5ea6\u5668<\/h3>\n
\u8fd9\u662f\u4e00\u4e2a\u7528\u4e8e\u5c06\u65b0\u521b\u5efa\u7684Pod\u8282\u70b9\u5206\u914d\u7684\u8c03\u5ea6\u5668\u3002\u5b83\u901a\u8fc7Kubernetes API\u76d1\u542cPod\u3001Node\u7b49\u8d44\u6e90\uff0c\u5e76\u901a\u8fc7bindings API\u5c06Node\u4e0ePod\u7ed1\u5b9a\u3002\u8c03\u5ea6\u5668\u7684\u7b56\u7565\u662f\u53ef\u914d\u7f6e\u7684\uff0c\u53ef\u4ee5\u901a\u8fc7\u542f\u52a8\u9009\u9879–policy-config-file\u6307\u5b9a\u914d\u7f6e\u7684json\u6587\u4ef6\u3002\uff08\u53c2\u8003\uff1ascheduler-policy-config.json\uff09<\/p>\n
\u53c2\u8003<\/p>\n
https:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/docs\/devel\/scheduler.md<\/ul>\nKube\u63a7\u5236\u5668\u7ba1\u7406\u5668<\/h3>\n
\u8fd9\u4e2a\u7ba1\u7406\u5668\u7528\u4e8e\u542f\u52a8\u5404\u79cd\u8d44\u6e90\u7684\u63a7\u5236\u5668\uff0c\u4f8b\u5982 Replication Controller\u3002\u6bcf\u4e2a\u63a7\u5236\u5668\u90fd\u5728 goroutine \u4e2d\u542f\u52a8\u3002(\u53c2\u8003: controllermanager.go#L185-L390)\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0c\u7531\u4e8e Replication Controller \u7684\u8d44\u6e90\u540d\u79f0\u672c\u8eab\u5c31\u5e26\u6709 “Controller”\uff0c\u56e0\u6b64\u63a7\u5236\u5668\u88ab\u547d\u540d\u4e3a “RepplicationManager”\u3002(\u53c2\u8003: replication_controller.go#L63-L64\u7684\u8bc4\u8bba)<\/p>\n
\u4ee5\u4e0b\u662f\u4f7f\u7528pprof\u67e5\u770bkube-controller-manager\u7684\u63a7\u5236\u5668\u5904\u7406\u7a0b\u5e8f\u7684\u542f\u52a8goroutine\u7684\u5217\u8868\u3002<\/p>\n
k8s.io\/kubernetes\/pkg\/controller\/daemon.(*DaemonSetsController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/deployment.(*DeploymentController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/endpoint.(*EndpointController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/gc.(*GCController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/job.(*JobController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/namespace.(*NamespaceController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/node.(*NodeController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/persistentvolume.(*PersistentVolumeClaimBinder).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/persistentvolume.(*PersistentVolumeRecycler).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/podautoscaler.(*HorizontalController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/replicaset.(*ReplicaSetController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/replication.(*ReplicationManager).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/resourcequota.(*ResourceQuotaController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/serviceaccount.(*ServiceAccountsController).Run\r\nk8s.io\/kubernetes\/pkg\/controller\/serviceaccount.(*TokensController).Run\r\n<\/code><\/pre>\n\u4ec5\u9700\u4e00\u79cd\u9009\u9879\uff0c\u8bf7\u539f\u751f\u4e2d\u6587\u6539\u8ff0\u4ee5\u4e0b\u5185\u5bb9\uff1a
\n\u53c2\u8003<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kube-controller-manager\/<\/ul>\n\u8282\u70b9\u7ec4\u4ef6<\/h2>\nkubelet\uff08\u8d8a\u72f1\u8005\uff09<\/h3>\n
kubelet\u662f\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\u7684\u4ee3\u7406\u7a0b\u5e8f\uff0c\u8d1f\u8d23\u542f\u52a8\u548c\u7ba1\u7406\u8282\u70b9\u7684\u4e3b\u8981\u8fdb\u7a0b\uff0c\u5373Pod\u3002\u5b83\u4e3b\u8981\u901a\u8fc7\u76d1\u89c6API\u670d\u52a1\u5668\u4ee5\u67e5\u770b\u5206\u914d\u7ed9\u81ea\u5df1\u8282\u70b9\u7684Pod\u4fe1\u606f\u6765\u542f\u52a8Pod\uff0c\u9664\u6b64\u4e4b\u5916\u8fd8\u63d0\u4f9b\u4e86\u4ee5\u4e0b\u4e09\u79cd\u65b9\u6cd5\u3002\u4f7f\u7528\u8fd9\u79cd\u673a\u5236\u53ef\u4ee5\u5728kubelet\u4e0a\u8fd0\u884c\u5305\u62ecAPI\u670d\u52a1\u5668\u5728\u5185\u7684Master\u7ec4\u4ef6\u3002<\/p>\n
\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb \u30ce\u30fc\u30c9\u306e\u7279\u5b9a\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea(\u4f8b\u3048\u3070\/etc\/kubernetes\/manifests)\u3092\u76e3\u8996\u3057\u3001\u305d\u3053\u306b\u7f6e\u304b\u308c\u305f\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304b\u308c\u305fPod\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u76e3\u8996\u3059\u308b\u30d5\u30a1\u30a4\u30eb\u307e\u305f\u306f\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306f–config\u30aa\u30d7\u30b7\u30e7\u30f3\u3001\u76e3\u8996\u9593\u9694\u306f–file-check-frequency\u30aa\u30d7\u30b7\u30e7\u30f3(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f20\u79d2)\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
HTTP\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8 \u7279\u5b9a\u306eURL\u3092\u76e3\u8996\u3057\u3001\u305d\u3053\u306b\u7f6e\u304b\u308c\u305f\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u30d5\u30a1\u30a4\u30eb\u306b\u66f8\u304b\u308c\u305fPod\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u76e3\u8996\u3059\u308bURL\u306f–manifest-url\u30aa\u30d7\u30b7\u30e7\u30f3\u3001\u76e3\u8996\u9593\u9694\u306f–http-check-frequency=\u30aa\u30d7\u30b7\u30e7\u30f3(\u30c7\u30d5\u30a9\u30eb\u30c8\u306f20\u79d2)\u3067\u6307\u5b9a\u3057\u307e\u3059\u3002<\/p>\n
HTTP\u30b5\u30fc\u30d0\u30fc Kubelet\u81ea\u4f53\u6301\u3064\u306eHTTP\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3066\u3001\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/p>\n
\u8bf7\u63d0\u4f9b\u66f4\u591a\u4e0a\u4e0b\u6587\u4ee5\u4fbf\u8fdb\u884c\u7ffb\u8bd1\u3002<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kubelet\/<\/ul>\nkube-proxy<\/h3>\n
kube-proxy\u662f\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u8fd0\u884c\u7684\u7f51\u7edc\u4ee3\u7406\uff0c\u7528\u4e8e\u4f20\u8f93Service\u5177\u6709\u7684\u865a\u62dfCluster IP\u3002\u76ee\u524d\u53ea\u652f\u6301\u8f6e\u8be2\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n
\u6709\u4e24\u79cd\u6a21\u5f0f\u53ef\u4ee5\u4f7f\u7528iptables\uff0c\u4e00\u79cd\u662f\u4f7f\u7528iptables\u6a21\u5f0f\u7684\u9ad8\u901f\u6a21\u5f0f\uff0c\u53e6\u4e00\u79cd\u662f\u5728\u7528\u6237\u7a7a\u95f4\u8fdb\u884c\u5904\u7406\u7684userspace\u6a21\u5f0f\u3002\u53ef\u4ee5\u901a\u8fc7\u542f\u52a8\u65f6\u7684–proxy-mode\u9009\u9879\u8fdb\u884c\u6307\u5b9a\u3002\u5982\u679c\u4e0d\u6307\u5b9a\u9009\u9879\uff0c\u5219\u5982\u679c\u53ef\u7528\uff0ciptables\u5c06\u88ab\u9ed8\u8ba4\u9009\u62e9\u3002\u8fd8\u53ef\u4ee5\u4f7f\u7528\u8282\u70b9\u7684\u6ce8\u91canet.experimental.kubernetes.io\/proxy-mode\u6765\u5bf9\u6bcf\u4e2a\u8282\u70b9\u8fdb\u884c\u8bbe\u7f6e\u3002\u5982\u679c\u4f7f\u7528iptables\u6a21\u5f0f\uff0c\u5faa\u73af\u8f6e\u8be2\u5c06\u7531static\u6a21\u5757\u6267\u884c\u3002<\/p>\n
\u53c2\u7167<\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/kube-proxy\/<\/ul>\n\u5176\u4ed6\u7ec4\u4ef6<\/h2>\n\u8d85\u7ea7kube\uff08\u4e00\u4f53\u5316\u4e8c\u8fdb\u5236\u6587\u4ef6\uff09<\/h3>\n
Hyperkube\u662f\u5c06\u4e0eKubernetes\u76f8\u5173\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u5408\u5e76\u4e3a\u4e00\u4e2a\u7684\u201c\u4e00\u4f53\u5316\u201d\u4e8c\u8fdb\u5236\u6587\u4ef6\u3002\u60a8\u53ef\u4ee5\u901a\u8fc7\u6307\u5b9a\u7ec4\u4ef6\u540d\u79f0\u4f5c\u4e3a\u7b2c\u4e00\u4e2a\u53c2\u6570\u6765\u4f7f\u7528\u5b83\u3002\u6b64\u5916\uff0c\u60a8\u8fd8\u53ef\u4ee5\u5c06\u5176\u4f5c\u4e3a\u7ec4\u4ef6\u540d\u79f0\u7684\u7b26\u53f7\u94fe\u63a5\u7c7b\u4f3c\u4e8ebusybox\u6765\u4f7f\u7528\u3002<\/p>\n
\u6bcf\u4e2aKubernetes\u53d1\u5e03\u7684\u7248\u672c\u90fd\u4f1a\u66f4\u65b0Docker\u955c\u50cf(gcr.io\/google_containers\/hyperkube-amd64)\uff0c\u5982\u679c\u8981\u5728kubelet\u4e0a\u8fd0\u884cKubernetes\u7ec4\u4ef6\uff0c\u901a\u5e38\u4f1a\u4f7f\u7528hyperkube\u7684Docker\u955c\u50cf\uff08\u4f8b\u5982\uff0cMaster\u7ec4\u4ef6\u7684\u5b9a\u4e49\u6587\u4ef6master.json\uff09\u3002<\/p>\n
\u4ee5\u4e0b\u662f\u5bf9\u5e94\u7684\u7ec4\u4ef6\uff08\u62ec\u53f7\u5185\u4e3a\u539f\u59cb\u7684\u4e8c\u8fdb\u5236\u6587\u4ef6\u540d\uff09\u3002<\/p>\n
\n- \n
kubectl (kubectl)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
apiserver (kube-apisever)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
controller-manager (kube-controller-manager)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
scheduler (kube-scheduler)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
kubelet (kubelet)<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
proxy (kube-proxy)<\/ul>\n
$ <\/span>hyperkube kubectl get nodes\r\n<\/code><\/pre>\n\u8bf7\u53c2\u8003\u6b64\u94fe\u63a5\uff1ahttps:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/cmd\/hyperkube\/main.go<\/p>\n
\u6682\u505c\u5bb9\u5668<\/h3>\n
\u6682\u505c\u5bb9\u5668\u662f\u4e00\u4e2a\u7279\u6b8a\u7684\u5bb9\u5668\uff0c\u5b83\u4fdd\u5b58\u7740 Pod \u5185\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\u7684\u4fe1\u606f\uff0c\u5e76\u81ea\u52a8\u5730\u6dfb\u52a0\u5230\u6240\u6709\u7684 Pod \u4e2d\u3002\u5728 Kubernetes \u5185\u90e8\uff0c\u5b83\u4ee5\u5e38\u91cf PodInfraContainerImage \u8fdb\u884c\u7279\u6b8a\u5904\u7406\uff0c\u53ea\u6709\u6682\u505c\u5bb9\u5668\u4f1a\u4fdd\u5b58 Pod \u5185\u7684\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\u4fe1\u606f\uff0c\u800c\u5176\u4ed6\u5bb9\u5668\u5219\u91c7\u53d6\u5171\u4eab\u8be5\u4fe1\u606f\u7684\u65b9\u5f0f\uff08\u53c2\u8003\uff1apkg\/kubelet\/dockertools\/manager.go\uff09\u3002\u8fd9\u6837\uff0c\u5373\u4f7f Pod \u7684\u5176\u4ed6\u5bb9\u5668\u88ab\u7ec8\u6b62\uff0c\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\u7684\u4fe1\u606f\u4ecd\u7136\u53ef\u88ab\u4fdd\u7559\u3002\u6682\u505c\u5bb9\u5668\u672c\u8eab\u53ea\u9700\u8c03\u7528 pause \u7cfb\u7edf\u8c03\u7528\u800c\u4e0d\u505a\u4efb\u4f55\u5176\u4ed6\u64cd\u4f5c\uff08\u53c2\u8003\uff1apause.asm#L47\uff09\u3002\u53ef\u4ee5\u4f7f\u7528 kubelet \u7684 –pod-infra-container-image \u9009\u9879\u6765\u66f4\u6539\u6682\u505c\u5bb9\u5668\u7684\u955c\u50cf\u3002\uff08\u53c2\u8003: pause.asm#L47\uff09\u3002<\/p>\n
\u53ea\u9700\u8981\u4e00\u4e2a\u9009\u9879<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/kubernetes\/tree\/master\/third_party\/pause<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
Containers at Google > What is the role of ‘pause’ container?<\/ul>\n\u589e\u503c\u7ec4\u4ef6<\/h2>\n\u64ad\u5ba2\u5927\u5e08<\/h3>\n
pod-master\u662f\u4e00\u4e2a\u5bb9\u5668\uff0c\u7528\u4e8e\u5728High-Availability\u914d\u7f6e\u4e2d\u534f\u8c03kube-scheduler\u548ckube-controller-manager\u5728\u54ea\u4e2aMaster\u4e0a\u8fd0\u884c\u3002\u5b83\u4f7f\u7528etcd\u8fdb\u884c\u7b80\u5355\u7684\u9501\u5b9a\u673a\u5236\uff0c\u5e76\u4e14\u662f\u4e00\u4e2a\u5927\u7ea6200\u884cgo\u7a0b\u5e8f\uff08\u53c2\u8003podmaster.go\uff09\u3002\u901a\u8fc7\u83b7\u53d6\u9501\u5b9a\u7684Master\u670d\u52a1\u5668\u6765\u53cd\u6620\u672c\u5730\u7684\u6e05\u5355\u6587\u4ef6\uff0c\u4ee5\u8c03\u6574kube-scheduler\u548ckube-controller-manager\u5728\u54ea\u4e2aMaster\u4e0a\u8fd0\u884c\u3002\u53ef\u4ee5\u53c2\u8003kubernetes\u5b58\u50a8\u5e93\u4e2d\u7684docs\/admin\/high-availability\u4e2d\u7684podmaster.yaml\u914d\u7f6e\u793a\u4f8b\u3002<\/p>\n
\u9274\u4e8ekube-scheduler\u548ckube-controller-manager\u672c\u8eab\u5df2\u5b9e\u73b0\u4e86\u9886\u5bfc\u8005\u9009\u4e3e\u529f\u80fd\uff08–leader-elect\u9009\u9879\uff09\uff0c\u56e0\u6b64\u5c06\u6765\u53ef\u80fd\u4f1a\u4e0d\u518d\u9700\u8981\u8fd9\u4e9b\u7ec4\u4ef6\u3002\uff08\u53c2\u8003 pkg\/client\/leaderelection\uff09<\/p>\n
\u53c2\u8003\u6587\u732e<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/contrib\/tree\/master\/pod-master<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
http:\/\/kubernetes.io\/docs\/admin\/high-availability\/<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Issue: leaderelection: retrofit controller-manager with leaderelection client #19621<\/ul>\n<\/li>\n<\/ul>\nIssue: retrofit the scheduler with the leader election client. #19347<\/p>\n
kube-dns \u53ef\u4f2fDNS<\/h3>\n
kube-dns\u662f\u96c6\u7fa4\u5185DNS Pod\u7684\u540d\u79f0\u3002\u5f53\u521b\u5efaService\u8d44\u6e90\u65f6\uff0c\u4f1a\u5c06\u5176\u6ce8\u518c\u5230kube-dns\u4e2d\uff0c\u4ee5\u4fbf\u4ece\u96c6\u7fa4\u5185\u90e8\u8fdb\u884c\u540d\u79f0\u89e3\u6790\u3002\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0c\u4f7f\u7528cluster.local\u57df\u3002Service\u4ee5{Service\u540d\u79f0}.{\u547d\u540d\u7a7a\u95f4}.svc.cluster.local\u7684\u683c\u5f0f\u6ce8\u518c\u5230A\u8bb0\u5f55\u548cSRV\u8bb0\u5f55\u4e2d\u3002<\/p>\n
kube-dns\u306ePod\u306f\u4ee5\u4e0b\u306e4\u30b3\u30f3\u30c6\u30ca\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n
skydns DNS\u30b5\u30fc\u30d0\u30fc<\/p>\n
etcd skydns\u306e\u30c7\u30fc\u30bf\u3092\u4fdd\u5b58\u3059\u308b\u5c02\u7528etcd<\/p>\n
kube2sky SkyDNS\u306bKubernetes\u306e\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u308b\u30d6\u30ea\u30c3\u30b8<\/p>\n
healthz \u5b9a\u671f\u7684\u306bnslookup\u3057\u3066\u30d8\u30eb\u30b9\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3046<\/p>\n
\u53ef\u4ee5\u770b\u770b<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/kubernetes\/tree\/master\/cluster\/addons\/dns<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
http:\/\/kubernetes.io\/docs\/admin\/dns\/<\/ul>\n\u5929\u7a7aDNS<\/h3>\n
\u8fd9\u662f\u4f5c\u4e3a\u96c6\u7fa4\u5185DNS\u4f7f\u7528\u7684DNS\u670d\u52a1\u5668\uff08kube-dns\u7684\u4e00\u90e8\u5206\uff09\u3002etcd\u7528\u4e8e\u6570\u636e\u6301\u4e45\u5316\u3002<\/p>\n
\u53c2\u8003<\/p>\n
https:\/\/github.com\/skynetservices\/skydns<\/ul>\nkube2sky \u79d1\u6bd4\u5c0d\u5929<\/h3>\n
SkyDNS\u306bKubernetes\u306e\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u308b\u30d6\u30ea\u30c3\u30b8\u3067\u3059\u3002Kubernetes\u306eAPI\u3067Service, Endpoints, Pod\u3092watch\u3057\u3001SkyDNS\u306eetcd\u306b\u66f8\u304d\u8fbc\u3080\u3053\u3068\u3067DNS\u306e\u60c5\u5831\u3092\u53cd\u6620\u3055\u305b\u307e\u3059\u3002<\/p>\n
\u8bf7\u53c2\u8003<\/p>\n
https:\/\/github.com\/kubernetes\/kubernetes\/tree\/master\/cluster\/addons\/dns\/kube2sky<\/ul>\n\u5806\u53f2\u7279 (du\u012b sh\u01d0 t\u00e8)<\/h3>\n
Heapster\u662f\u4e00\u4e2a\u7528\u4e8e\u6c47\u603b\u96c6\u7fa4\u6574\u4f53\u4f7f\u7528\u60c5\u51b5\u7684\u7ec4\u4ef6\u3002\u5b58\u50a8\u662f\u53ef\u63d2\u62d4\u7684\u673a\u5236\uff0c\u5e76\u652f\u6301\u591a\u79cd\u5b58\u50a8\uff0c\u5982InfluxDB\u3001Google Cloud Monitoring\u3001Kafka\u7b49\u3002<\/p>\n
<\/div>\n\u5f15\u7528\u81eahttp:\/\/blog.kubernetes.io\/2015\/05\/resource-usage-monitoring-kubernetes.html\u7684\u56fe\u8868\u4e2d\u663e\u793a<\/p><\/blockquote>\n
\u8fd8\u6709\u4e00\u4e2a\u540d\u4e3akubedash\u7684\u6027\u80fd\u5206\u6790\u754c\u9762\u7684\u9879\u76ee\u4e5f\u5b58\u5728\u3002<\/p>\n
\n- \n
https:\/\/github.com\/kubernetes\/heapster<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
http:\/\/blog.kubernetes.io\/2015\/05\/resource-usage-monitoring-kubernetes.html<\/ul>\nHelm \uff08\u90e8\u7f72\u7ba1\u7406\u5668\uff09<\/h3>\n
Helm\u662f\u4e00\u4e2a\u80fd\u591f\u5c06Kubernetes\u914d\u7f6e\u6a21\u677f\u5316\u5e76\u8f7b\u677e\u7ba1\u7406\u90e8\u7f72\u7684\u673a\u5236\u3002\u8fd9\u4e9b\u6a21\u677f\u88ab\u79f0\u4e3aCharts\uff0c\u5b98\u65b9\u63d0\u4f9b\u4e86\u4e00\u4e2a\u540d\u4e3akubernetes\/charts\u7684\u6a21\u677f\u5b58\u50a8\u5e93\u3002\u76ee\u524d\u770b\u6765\uff0c\u5b83\u4ecd\u5904\u4e8e\u5f00\u53d1\u9636\u6bb5\u3002\u53ef\u4ee5\u5c06\u5176\u60f3\u8c61\u4e3a\u7c7b\u4f3c\u4e8eHomebrew\u7684\u5de5\u5177\uff0c\u53ef\u4ee5\u5728\u4e0d\u7f16\u5199Kubernetes\u914d\u7f6e\u6587\u4ef6\u7684\u60c5\u51b5\u4e0b\u8fdb\u884c\u90e8\u7f72\u3002<\/p>\n
$ <\/span>helm install <\/span>redis-cluster\r\n# replication controller\u3084service\u304c\u4f5c\u3089\u308c\u308b<\/span>\r\n<\/code><\/pre>\n\u770b\u8d77\u6765\u4f7f\u7528\u4e86\u540d\u4e3aJinja\u7684\u6a21\u677f\uff0c\u53ef\u4ee5\u5c55\u5f00\u548c\u81ea\u5b9a\u4e49Kubernetes\u7684\u5404\u79cd\u8bbe\u7f6e\u6587\u4ef6\uff08\u4f8b\u5982redis.jinja\uff09\u7684\u673a\u5236\u3002<\/p>\n
\u3082\u3068\u3082\u3068\u306fDeis\u306eHelm\u3068\u3044\u3046\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3068\u3001Kubernetes\u30c1\u30fc\u30e0\u304c\u958b\u767a\u3059\u308bdeployment-manager(dm)\u3068\u3044\u30462\u3064\u306e\u30c4\u30fc\u30eb\u304c\u3042\u3063\u305f\u3088\u3046\u3067\u3059\u3002Integrate helm and dm #171\u3068\u3044\u3046Issue\u306b\u3088\u308b\u3068\u3001\u30cf\u30c3\u30ab\u30bd\u30f3\u3067\u3053\u306e2\u3064\u3092\u7d71\u5408\u3059\u308b\u3068\u6c7a\u3081\u305f\u3089\u3057\u304f\u3001\u30ec\u30dd\u30b8\u30c8\u30ea\u540d\u3082”deployment-manager”\u304b\u3089”helm”\u306b\u5909\u66f4\u3057\u305f\u3088\u3046\u3067\u3059\u3002<\/p>\n
\n- \n
http:\/\/kubernetes.io\/docs\/admin\/cluster-components\/<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
https:\/\/github.com\/kubernetes\/kubernetes\/blob\/master\/docs\/design\/architecture.md<\/ul>\n\u7528\u6237\u754c\u9762 (User Interface)<\/h2>\n\u4eea\u8868\u76d8<\/h3>\n
dashboard\u306fKubernetes\u306e\u30c0\u30c3\u30b7\u30e5\u30dc\u30fc\u30c9\u306e\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067\u3059\u3002kube-ui\u3088\u308a\u3082\u65b0\u3057\u304f\u3001kube-ui\u3092\u7f6e\u304d\u63db\u3048\u308b\u3082\u306e\u3067\u3059\u3002\u73fe\u72b6\u3067\u306fUI\u4e0a\u304b\u3089\u306e\u30c7\u30d7\u30ed\u30a4\u3084\u3001Pod\u306e\u4e00\u89a7\u3084\u8a73\u7d30\u60c5\u5831\u306e\u8868\u793a\u306a\u3069\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u8a73\u7d30\u306f\u516c\u5f0f\u306e\u30e6\u30fc\u30b6\u30fc\u30ac\u30a4\u30c9\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u7531\u4e8e\u63d0\u4f9b\u4e86yaml\u6587\u4ef6\uff0c\u60a8\u53ef\u4ee5\u8f7b\u677e\u5730\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\u90e8\u7f72\u3002<\/p>\n
# \u30c7\u30d7\u30ed\u30a4<\/span>\r\n$ <\/span>kubectl create -f<\/span> https:\/\/raw.githubusercontent.com\/kubernetes\/dashboard\/master\/src\/deploy\/kubernetes-dashboard.yaml\r\n# UI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306bproxy\u3092\u7acb\u3061\u4e0a\u3052\u3066\u304a\u304f<\/span>\r\n$ <\/span>kubectl proxy\r\n<\/code><\/pre>\nkubectl proxy\u3067proxy\u3092\u7acb\u3066\u308b\u3053\u3068\u3067\u3001 http:\/\/127.0.0.1:8001\/api\/v1\/proxy\/namespaces\/kube-system\/services\/kubernetes-dashboard\/
\n\u3067dashboard\u306eUI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
<\/div>\n\u8bf7\u53c2\u7167\u4ee5\u4e0b\u5185\u5bb9\u3002<\/p>\n
https:\/\/github.com\/kubernetes\/dashboard<\/ul>\nKube-UI \u7684\u4e2d\u6587\u91ca\u4e49\u662f\u4ec0\u4e48\uff1f<\/h3>\n
kube-ui\u662f\u4e00\u4e2a\u65e7\u7248\u672c\u7684Kubernetes\u4eea\u8868\u76d8\u3002\u5f53\u524d\u6700\u65b0\u7248\u672c\u7684\u4eea\u8868\u76d8\u5df2\u5177\u5907\u751f\u4ea7\u5c31\u7eea\u6761\u4ef6\uff0c\u6240\u4ee5kube-ui\u5c06\u5f88\u5feb\u88ab\u6dd8\u6c70\u3002<\/p>\n
<\/div>\n1. \u8bf7\u53c2\u8003\u4e00\u4e0b\u3002
\n2. \u8bf7\u770b\u770b\u8fd9\u4e2a\u53c2\u8003\u3002
\n3. \u8bf7\u60a8\u68c0\u67e5\u4e00\u4e0b\u8fd9\u4e2a\u53c2\u8003\u3002
\n4. \u8fd9\u662f\u4e00\u4e2a\u4f9b\u60a8\u53c2\u8003\u7684\u3002<\/p>\n
https:\/\/github.com\/kubernetes\/kube-ui<\/ul>\nKubedash \u9177\u58f3<\/h3>\n
\u8fd9\u662f\u4e00\u4e2a\u663e\u793aKubernetes\u6027\u80fd\u4fe1\u606f\u7684\u4eea\u8868\u677f\uff0c\u5b83\u5229\u7528Heapster\u63d0\u4f9b\u7684\u4fe1\u606f\u3002\u60a8\u53ef\u4ee5\u67e5\u770b\u6574\u4e2a\u96c6\u7fa4\u7684\u4fe1\u606f\uff0c\u4ee5\u53ca\u6bcf\u4e2a\u8282\u70b9\u548c\u6bcf\u4e2a\u547d\u540d\u7a7a\u95f4\u7684CPU\u548c\u5185\u5b58\u4f7f\u7528\u7387\u3002<\/p>\n
\u6709\u4e00\u4efdyaml\u6587\u4ef6\u53ef\u7528\uff0c\u60a8\u53ef\u4ee5\u7b80\u5355\u5730\u6839\u636e\u4ee5\u4e0b\u65b9\u5f0f\u8fdb\u884c\u90e8\u7f72\u3002<\/p>\n
# \u30c7\u30d7\u30ed\u30a4<\/span>\r\n$ <\/span>kubectl create -f<\/span> https:\/\/raw.githubusercontent.com\/kubernetes\/kubedash\/master\/deploy\/bundle.yaml\r\n# UI\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u305f\u3081\u306bproxy\u3092\u7acb\u3061\u4e0a\u3052\u3066\u304a\u304f<\/span>\r\n$ <\/span>kubectl proxy\r\n<\/code><\/pre>\n\u901a\u8fc7\u4f7f\u7528kubectl proxy\u547d\u4ee4\uff0c\u5728http:\/\/127.0.0.1:8001\/api\/v1\/proxy\/namespaces\/kube-system\/services\/kubedash\/#!\/ \u4e0a\u53ef\u4ee5\u8bbf\u95eekubedash\u7684\u7528\u6237\u754c\u9762\u3002<\/p>\n
<\/div>\n\u53c2\u8003\u4ee5\u4e0b\u5185\u5bb9\u5e76\u7528\u4e2d\u6587\u8fdb\u884c\u672c\u5730\u5316\u3002\u53ea\u9700\u8981\u4e00\u79cd\u9009\u9879\uff1a<\/p>\n
– \u8bf7\u53c2\u8003\u4ee5\u4e0b\u4fe1\u606f\u3002
\n– \u8bf7\u6839\u636e\u4ee5\u4e0b\u5185\u5bb9\u8fdb\u884c\u53c2\u8003\u3002
\n– \u8bf7\u53c2\u7167\u4e0b\u8ff0\u4fe1\u606f\u3002
\n– \u8bf7\u53c2\u8003\u4e0b\u5217\u5185\u5bb9\u3002
\n– \u8bf7\u8003\u8651\u4e0b\u5217\u53c2\u8003\u3002<\/p>\n
https:\/\/github.com\/kubernetes\/kubedash<\/ul>\n","protected":false},"excerpt":{"rendered":"\u6211\u6574\u7406\u4e86Kubernetes\u7684\u914d\u7f6e\u7ec4\u4ef6\u6e05\u5355\u3002\u8fd9\u662f\u57fa\u4e8eKubernetes 1.2\u7248\u672c\u7684\u4fe1\u606f\u3002 \u7ec4\u4ef6\u5217\u8868 \u8bf4\u660e\uff1a […]<\/p>\n","protected":false},"author":5,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-35635","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
Kubernetes: \u6784\u6210\u7ec4\u4ef6\u6e05\u5355 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-\u6784\u6210\u7ec4\u4ef6\u6e05\u5355\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Kubernetes: \u6784\u6210\u7ec4\u4ef6\u6e05\u5355\" \/>\n<meta property=\"og:description\" content=\"\u6211\u6574\u7406\u4e86Kubernetes\u7684\u914d\u7f6e\u7ec4\u4ef6\u6e05\u5355\u3002\u8fd9\u662f\u57fa\u4e8eKubernetes 1.2\u7248\u672c\u7684\u4fe1\u606f\u3002 \u7ec4\u4ef6\u5217\u8868 \u8bf4\u660e\uff1a […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-\u6784\u6210\u7ec4\u4ef6\u6e05\u5355\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2023-07-31T20:16:08+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-04-30T07:45:42+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d246c37434c4406c2ec27\/3-0.png\" \/>\n<meta name=\"author\" content=\"\u6e05, \u5b87\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u6e05, \u5b87\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-%e6%9e%84%e6%88%90%e7%bb%84%e4%bb%b6%e6%b8%85%e5%8d%95\/\",\"url\":\"https:\/\/www.silicloud.com\/zh\/blog\/kubernetes-%e6%9e%84%e6%88%90%e7%bb%84%e4%bb%b6%e6%b8%85%e5%8d%95\/\",\"name\":\"Kubernetes: \u6784\u6210\u7ec4\u4ef6\u6e05\u5355 - 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