{"id":76894,"date":"2024-03-07T13:55:55","date_gmt":"2024-03-07T05:55:55","guid":{"rendered":"https:\/\/docs.pingcode.com\/?p=76894"},"modified":"2024-03-07T13:55:55","modified_gmt":"2024-03-07T05:55:55","slug":"kubernetes%e7%9a%84%e6%a0%b8%e5%bf%83%e7%bb%84%e4%bb%b6%e6%9c%89%e5%93%aa%e4%ba%9b","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/76894.html","title":{"rendered":"Kubernetes\u7684\u6838\u5fc3\u7ec4\u4ef6\u6709\u54ea\u4e9b"},"content":{"rendered":"

Kubernetes\u7684\u6838\u5fc3\u7ec4\u4ef6\u5305\u62ecAPI\u670d\u52a1\u5668\uff08API Server\uff09\u3001\u8c03\u5ea6\u5668\uff08Scheduler\uff09\u3001\u63a7\u5236\u5668\u7ba1\u7406\u5668\uff08Controller Manager\uff09\u3001etcd\u5b58\u50a8\u3001\u5bb9\u5668\u8fd0\u884c\u65f6\uff08ContAI<\/a>ner Runtime\uff09\u3001Kubelet\u53ca\u670d\u52a1\u4ee3\u7406\uff08Kube-Proxy\uff09\u7b49\u3002<\/strong> \u5176\u4e2d\uff0cAPI\u670d\u52a1\u5668<\/strong>\u662fKubernetes\u96c6\u7fa4\u7684\u4e2d\u67a2\u795e\u7ecf\uff0c\u5b83\u8d1f\u8d23\u4f5c\u4e3a\u96c6\u7fa4\u7684\u524d\u7aef\u5904\u7406\u6240\u6709\u4efb\u52a1\uff0c\u5176\u4ed6\u7ec4\u4ef6\u901a\u8fc7API\u4e0e\u4e4b\u901a\u8baf\u3001\u4e0b\u8fbe\u6307\u4ee4\u3002API\u670d\u52a1\u5668\u5c55\u73b0\u51fa\u5f3a\u5927\u7684\u4f38\u7f29\u80fd\u529b\u3001\u4e00\u81f4\u6027\u548c\u5b89\u5168\u6027\uff0c\u5e76\u4e14\u786e\u4fdd\u4e86\u96c6\u7fa4\u5185\u90e8\u7ec4\u4ef6\u4e0e\u5916\u90e8\u7528\u6237\u7684\u8bf7\u6c42\u5f97\u4ee5\u7edf\u4e00\u7ba1\u7406\u3002<\/p>\n

## \u4e00\u3001API \u670d\u52a1\u5668\uff08API SERVER\uff09<\/p>\n

Kubernetes API\u670d\u52a1\u5668\u626e\u6f14\u7740\u96c6\u7fa4\u4e2d\u7684\u201c\u5927\u8111\u201d\u89d2\u8272\u3002\u6240\u6709\u7684\u7ec4\u4ef6\u4ea4\u4e92\u90fd\u662f\u901a\u8fc7API\u670d\u52a1\u5668\u8fdb\u884c\u7684\u3002\u8fd9\u4e2a\u7ec4\u4ef6\u5bf9\u5916\u66b4\u9732Kubernetes API\uff0c\u5904\u7406REST\u8bf7\u6c42\uff0c\u66f4\u65b0\u5bf9\u5e94\u7684\u5bf9\u8c61\u72b6\u6001\u3002<\/p>\n

– API\u670d\u52a1\u5668\u7684\u53ef\u6269\u5c55\u6027<\/strong>\uff1a\u8fd9\u4e2a\u7ec4\u4ef6\u8bbe\u8ba1\u4e0a\u9002\u7528\u4e8e\u6c34\u5e73\u6269\u5c55\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u6c42\u589e\u52a0\u5b9e\u4f8b\u6765\u5206\u6563\u8d1f\u8f7d\u3002<\/p>\n

– API\u670d\u52a1\u5668\u7684\u5b89\u5168\u6027<\/strong>\uff1a\u5b83\u652f\u6301\u5404\u79cd\u8ba4\u8bc1\u673a\u5236\uff0c\u5982\u57fa\u4e8etoken\u3001\u5ba2\u6237\u7aef\u8bc1\u4e66\u7b49\uff0c\u5e76\u53ef\u901a\u8fc7\u6388\u6743\u63d2\u4ef6\u6765\u63a7\u5236\u8d44\u6e90\u8bbf\u95ee\u6743\u9650\u3002<\/p>\n

## \u4e8c\u3001\u8c03\u5ea6\u5668\uff08SCHEDULER\uff09<\/p>\n

\u8c03\u5ea6\u5668\u8d1f\u8d23\u5206\u914d\u65b0\u521b\u5efa\u7684Pod\u5230\u96c6\u7fa4\u4e2d\u7684\u8282\u70b9\u3002\u5b83\u76d1\u89c6\u672a\u5206\u914dPod\uff0c\u5e76\u9009\u62e9\u6700\u9002\u5408\u7684\u8282\u70b9\u4ee5\u8fd0\u884c\u8fd9\u4e9bPod\u3002<\/p>\n

– \u7b56\u7565\u4e0e\u4f18\u5148\u7ea7<\/strong>\uff1a\u8c03\u5ea6\u5668\u6839\u636e\u9884\u5b9a\u4e49\u7684\u8c03\u5ea6\u7b56\u7565\uff0c\u8003\u8651\u5982\u8282\u70b9\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\u3001Pod\u7684QoS\u8981\u6c42\u7b49\u56e0\u7d20\u51b3\u5b9aPod\u7684\u653e\u7f6e\u3002<\/p>\n

– \u53ef\u5b9a\u5236\u6027<\/strong>\uff1a\u53ef\u4ee5\u901a\u8fc7\u66f4\u6539\u914d\u7f6e\u6587\u4ef6\u6765\u5b9a\u5236\u8c03\u5ea6\u5668\u7684\u8c03\u5ea6\u7b56\u7565\uff0c\u6216\u901a\u8fc7\u5f00\u53d1\u8c03\u5ea6\u63d2\u4ef6\u6765\u6269\u5c55\u5176\u529f\u80fd\u3002<\/p>\n

## \u4e09\u3001\u63a7\u5236\u5668\u7ba1\u7406\u5668\uff08CONTROLLER MANAGER\uff09<\/p>\n

\u63a7\u5236\u5668\u7ba1\u7406\u5668\u8fd0\u884c\u63a7\u5236\u5668\u8fdb\u7a0b\uff0c\u5305\u62ec\u8282\u70b9\u63a7\u5236\u5668\u3001\u4efb\u52a1\u63a7\u5236\u5668\u3001\u7aef\u70b9\u63a7\u5236\u5668\u3001\u670d\u52a1\u8d26\u6237\u4e0e\u4ee4\u724c\u63a7\u5236\u5668\u7b49\u3002<\/p>\n

– \u63a7\u5236\u5668\u7684\u81ea\u6211\u4fee\u590d\u673a\u5236<\/strong>\uff1a\u8fd9\u4e9b\u63a7\u5236\u5668\u786e\u4fddAPI\u670d\u52a1\u5668\u4e2d\u5b9a\u4e49\u7684\u96c6\u7fa4\u72b6\u6001\u4e0e\u5b9e\u9645\u72b6\u6001\u4fdd\u6301\u4e00\u81f4\uff0c\u9047\u5230\u504f\u5dee\u65f6\u4f1a\u81ea\u52a8\u8c03\u6574\u3002<\/p>\n

– \u96c6\u7fa4\u72b6\u6001\u7ba1\u7406<\/strong>\uff1a\u63a7\u5236\u5668\u7ba1\u7406\u5668\u901a\u8fc7API\u670d\u52a1\u5668\u76d1\u542c\u96c6\u7fa4\u72b6\u6001\u7684\u53d8\u5316\uff0c\u5e76\u8fdb\u884c\u9002\u5f53\u7684\u7ef4\u62a4\u64cd\u4f5c\u3002<\/p>\n

## \u56db\u3001ETCD\u5b58\u50a8<\/p>\n

etcd\u662f\u4e00\u4e2a\u9ad8\u53ef\u7528\u7684\u952e\u503c\u5b58\u50a8\u7cfb\u7edf\uff0cKubernetes\u7528\u5b83\u6765\u5b58\u50a8\u6240\u6709\u96c6\u7fa4\u6570\u636e\u3002\u5b83\u662f\u96c6\u7fa4\u5185\u5206\u5e03\u5f0f\u7cfb\u7edf\u7684\u6570\u636e\u4e00\u81f4\u6027\u7684\u5173\u952e\u3002<\/p>\n

– \u6570\u636e\u7684\u4e00\u81f4\u6027\u4e0e\u9ad8\u53ef\u7528\u6027<\/strong>\uff1aetcd\u4f7f\u7528Raft\u7b97\u6cd5\u6765\u4fdd\u8bc1\u6570\u636e\u4e00\u81f4\u6027\uff0c\u5e76\u652f\u6301\u9ad8\u53ef\u7528\u90e8\u7f72\u6a21\u5f0f\u4ee5\u63d0\u4f9b\u6545\u969c\u8f6c\u79fb\u80fd\u529b\u3002<\/p>\n

– \u8f7b\u91cf\u7ea7\u4e0e\u5feb\u901f<\/strong>\uff1aetcd\u8bbe\u8ba1\u8f7b\u91cf\u7ea7\uff0c\u540c\u65f6\u5b83\u7684\u8bfb\u5199\u901f\u5ea6\u975e\u5e38\u5feb\uff0c\u9002\u5408\u5927\u89c4\u6a21\u5206\u5e03\u5f0f\u7cfb\u7edf\u3002<\/p>\n

## \u4e94\u3001\u5bb9\u5668\u8fd0\u884c\u65f6\uff08CONTAINER RUNTIME\uff09<\/p>\n

\u5bb9\u5668\u8fd0\u884c\u65f6\u8d1f\u8d23\u8fd0\u884c\u5bb9\u5668\u3002Kubernetes\u652f\u6301\u591a\u79cd\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u5982Docker\u3001containerd\u3001CRI-O\u7b49\u3002<\/p>\n

– \u5bf9\u63a5Kubernetes<\/strong>\uff1a\u5bb9\u5668\u8fd0\u884c\u65f6\u9700\u8981\u5b9e\u73b0Kubernetes\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u63a5\u53e3\uff08CRI\uff09\uff0c\u4ee5\u4e0eKubelet\u8fdb\u884c\u4ea4\u4e92\u3002<\/p>\n

– \u5bb9\u5668\u751f\u547d\u5468\u671f\u7ba1\u7406<\/strong>\uff1a\u5bb9\u5668\u8fd0\u884c\u65f6\u7ba1\u7406\u7740\u5bb9\u5668\u7684\u521b\u5efa\u3001\u8fd0\u884c\u3001\u505c\u6b62\u4ee5\u53ca\u5220\u9664\u7b49\u751f\u547d\u5468\u671f\u8fc7\u7a0b\u3002<\/p>\n

## \u516d\u3001KUBELET<\/p>\n

Kubelet\u4f5c\u4e3a\u96c6\u7fa4\u4e2d\u6bcf\u4e2a\u8282\u70b9\u4e0a\u7684\u4ee3\u7406\uff0c\u5b83\u786e\u4fdd\u5bb9\u5668\u90fd\u5728Pod\u4e2d\u6309\u9884\u671f\u8fd0\u884c\u3002Kubelet\u63a5\u53d7\u4e00\u7cfb\u5217\u7684PodSpecs\uff0c\u786e\u4fdd\u8fd9\u4e9bPodSpecs\u5b9a\u4e49\u7684\u5bb9\u5668\u6b63\u5e38\u8fd0\u884c\u3002<\/p>\n

– \u8282\u70b9\u5065\u5eb7\u76d1\u6d4b<\/strong>\uff1aKubelet\u5b9a\u671f\u5bf9\u8282\u70b9\u8fdb\u884c\u5065\u5eb7\u68c0\u67e5\uff0c\u5e76\u5c06\u72b6\u6001\u62a5\u544a\u7ed9API\u670d\u52a1\u5668\u3002<\/p>\n

– Pod\u751f\u547d\u5468\u671f\u7ba1\u7406<\/strong>\uff1aKubelet\u6839\u636eAPI\u670d\u52a1\u5668\u4e0b\u8fbe\u7684PodSpecs\u6765\u7ba1\u7406Pod\u7684\u521b\u5efa\u3001\u66f4\u65b0\u4e0e\u5220\u9664\u7b49\u64cd\u4f5c\u3002<\/p>\n

## \u4e03\u3001\u670d\u52a1\u4ee3\u7406\uff08KUBE-PROXY\uff09<\/p>\n

Kube-Proxy\u8fd0\u884c\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\uff0c\u662f\u96c6\u7fa4\u5185\u7684\u7f51\u7edc\u4ee3\u7406\uff0c\u7528\u4e8e\u5b9e\u73b0Kubernetes\u670d\u52a1(Service)\u7684\u62bd\u8c61\u6982\u5ff5\u3002<\/p>\n

– \u670d\u52a1\u62bd\u8c61<\/strong>\uff1aKube-Proxy\u4e3aPod\u63d0\u4f9b\u4e86\u865a\u62df\u7684\u670d\u52a1IP\uff0c\u5e76\u80fd\u5c06\u8bf7\u6c42\u8f6c\u53d1\u5230\u540e\u7aef\u7684Pod\u3002<\/p>\n

– \u6d41\u91cf\u7684\u8d1f\u8f7d\u5747\u8861<\/strong>\uff1aKube-Proxy\u8fd8\u53ef\u4ee5\u5b9e\u73b0\u7b80\u5355\u7684\u8d1f\u8f7d\u5747\u8861\uff0c\u6839\u636e\u9884\u5b9a\u7b56\u7565\u5c06\u5916\u90e8\u6d41\u91cf\u5206\u914d\u5230\u4e0d\u540c\u7684Pod\u3002<\/p>\n

Kubernetes\u7684\u6838\u5fc3\u7ec4\u4ef6\u90fd\u4e3a\u96c6\u7fa4\u7684\u7ba1\u7406\u548c\u7ef4\u62a4\u63d0\u4f9b\u4e86\u5fc5\u8981\u7684\u529f\u80fd\uff0c\u786e\u4fdd\u96c6\u7fa4\u5904\u4e8e\u9884\u671f\u72b6\u6001\u3002\u6bcf\u4e2a\u7ec4\u4ef6\u90fd\u5206\u522b\u627f\u62c5\u7740\u4e3a\u6574\u4e2a\u7cfb\u7edf\u63d0\u4f9b\u670d\u52a1\u7684\u89d2\u8272\uff0c\u5171\u540c\u6784\u6210\u4e86Kubernetes\u5f3a\u5927\u7684\u751f\u6001\u7cfb\u7edf\u3002<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

\u4ec0\u4e48\u662fKubernetes\u7684\u4e3b\u8981\u529f\u80fd\u6a21\u5757\uff1f<\/strong><\/p>\n

Kubernetes\u7684\u6838\u5fc3\u7ec4\u4ef6\u5305\u62ec\u4f46\u4e0d\u9650\u4e8e\uff1akube-apiserver\u3001kube-scheduler\u3001kube-controller-manager\u3001etcd\u3001kubelet\u548ckube-proxy\u3002\u5176\u4e2d\uff0ckube-apiserver\u4f5c\u4e3a\u6574\u4e2a\u96c6\u7fa4\u7684\u5165\u53e3\uff0c\u4e3a\u5176\u4ed6\u7ec4\u4ef6\u63d0\u4f9bAPI\u670d\u52a1\uff1bkube-scheduler\u8d1f\u8d23\u5bf9\u65b0\u521b\u5efa\u7684Pod\u8fdb\u884c\u8c03\u5ea6\uff0c\u5c06\u5176\u5206\u914d\u5230\u5177\u4f53\u7684\u8282\u70b9\u4e0a\uff1bkube-controller-manager\u8d1f\u8d23\u5904\u7406\u96c6\u7fa4\u4e2d\u7684\u4e00\u4e9b\u63a7\u5236\u5668\uff0c\u786e\u4fdd\u96c6\u7fa4\u5904\u4e8e\u9884\u671f\u7684\u72b6\u6001\uff1betcd\u662fKubernetes\u96c6\u7fa4\u4e2d\u5b58\u50a8\u6240\u6709\u96c6\u7fa4\u6570\u636e\u7684\u6570\u636e\u5b58\u50a8\u7cfb\u7edf\uff1bkubelet\u662f\u8fd0\u884c\u5728\u6bcf\u4e2a\u8282\u70b9\u4e0a\u7684\u4ee3\u7406\u670d\u52a1\uff0c\u8d1f\u8d23\u7ba1\u7406Pod\u7684\u751f\u547d\u5468\u671f\uff1b\u800ckube-proxy\u8d1f\u8d23\u5b9e\u73b0\u96c6\u7fa4\u5185Service\u7684\u7f51\u7edc\u4ee3\u7406\u3002<\/p>\n

Kubernetes\u7684\u6838\u5fc3\u7ec4\u4ef6\u5982\u4f55\u534f\u540c\u5de5\u4f5c\uff1f<\/strong><\/p>\n

Kubernetes\u7684\u6838\u5fc3\u7ec4\u4ef6\u901a\u8fc7\u76f8\u4e92\u534f\u4f5c\u6765\u5b9e\u73b0\u6574\u4e2a\u96c6\u7fa4\u7684\u8fd0\u884c\u3002\u5f53\u7528\u6237\u901a\u8fc7kube-apiserver\u63d0\u4ea4Pod\u7684\u521b\u5efa\u8bf7\u6c42\u65f6\uff0ckube-scheduler\u6839\u636e\u8c03\u5ea6\u7b97\u6cd5\u9009\u62e9\u5408\u9002\u7684\u8282\u70b9\uff0c\u7136\u540e\u901a\u77e5kubelet\u5728\u76ee\u6807\u8282\u70b9\u4e0a\u521b\u5efaPod\u3002\u540c\u65f6\uff0ckube-controller-manager\u76d1\u63a7\u96c6\u7fa4\u72b6\u6001\uff0c\u786e\u4fdd\u96c6\u7fa4\u6b63\u5e38\u8fd0\u884c\uff0c\u5e76\u5904\u7406\u5404\u79cd\u63a7\u5236\u5668\uff0c\u5305\u62ecReplication Controller\u3001Namespace Controller\u7b49\u3002etcd\u5b58\u50a8\u7740\u6574\u4e2a\u96c6\u7fa4\u7684\u72b6\u6001\u4fe1\u606f\uff0c\u6240\u6709\u7ec4\u4ef6\u90fd\u53ef\u4ee5\u4ece\u4e2d\u83b7\u53d6\u6700\u65b0\u7684\u96c6\u7fa4\u4fe1\u606f\u3002kube-proxy\u5219\u8d1f\u8d23\u7ef4\u62a4\u96c6\u7fa4\u5185Service\u7684\u7f51\u7edc\u4ee3\u7406\uff0c\u5b9e\u73b0\u670d\u52a1\u53d1\u73b0\u548c\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n

Kubernetes\u7684\u6838\u5fc3\u7ec4\u4ef6\u5982\u4f55\u4fdd\u8bc1\u96c6\u7fa4\u7684\u9ad8\u53ef\u7528\u6027\uff1f<\/strong><\/p>\n

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