{"id":1892,"date":"2020-07-06T18:38:50","date_gmt":"2020-07-06T10:38:50","guid":{"rendered":"http:\/\/39.97.231.10\/?p=1892"},"modified":"2020-07-06T18:38:50","modified_gmt":"2020-07-06T10:38:50","slug":"kubernetesk8s%e5%ae%b9%e5%99%a8%e8%bf%90%e8%a1%8c%e6%97%b6cri%e7%ae%80%e4%bb%8b","status":"publish","type":"post","link":"http:\/\/www.weijing.co\/?p=1892","title":{"rendered":"Kubernetes(k8s)\u5bb9\u5668\u8fd0\u884c\u65f6(CRI)\u7b80\u4ecb"},"content":{"rendered":"<header>\n<div>Kubernetes\u8282\u70b9\u7684\u5e95\u5c42\u7531\u4e00\u4e2a\u53eb\u505a\u201c\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\u7684\u8f6f\u4ef6\u8fdb\u884c\u652f\u6491\uff0c\u5b83\u8d1f\u8d23\u6bd4\u5982\u542f\u505c\u5bb9\u5668\u8fd9\u6837\u7684\u4e8b\u60c5\u3002\u6700\u5e7f\u4e3a\u4eba\u77e5\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u5f53\u5c5eDocker\uff0c\u4f46\u5b83\u4e0d\u662f\u552f\u4e00\u7684\u3002\u4e8b\u5b9e\u4e0a\uff0c\u5bb9\u5668\u8fd0\u884c\u65f6\u8fd9\u4e2a\u9886\u57df\u53d1\u5c55\u8fc5\u901f\u3002\u4e3a\u4e86\u4f7fKubernetes\u7684\u6269\u5c55\u53d8\u5f97\u66f4\u5bb9\u6613\uff0c\u6211\u4eec\u4e00\u76f4\u5728\u6253\u78e8\u652f\u6301\u5bb9\u5668\u8fd0\u884c\u65f6\u7684K8s\u63d2\u4ef6API\uff1a\u5bb9\u5668\u8fd0\u884c\u65f6\u63a5\u53e3(Container Runtime Interface, CRI)\u3002<\/div>\n<\/header>\n<article>\n<h2>CRI\u662f\u4ec0\u4e48\uff1f<\/h2>\n<p>\u6bcf\u79cd\u5bb9\u5668\u8fd0\u884c\u65f6\u5404\u6709\u6240\u957f\uff0c\u8bb8\u591a\u7528\u6237\u90fd\u5e0c\u671bKubernetes\u652f\u6301\u66f4\u591a\u7684\u8fd0\u884c\u65f6\u3002\u5728<a href=\\\"https:\/\/www.kubernetes.org.cn\/tags\/kubernetes1-5\\\" target=\\\"_blank\\\" rel=\\\"noopener noreferrer\\\">Kubernetes 1.5<\/a>\u53d1\u5e03\u7248\u91cc\uff0c\u6211\u4eec\u5f15\u5165\u4e86CRI\u2013\u4e00\u4e2a\u80fd\u8ba9kubelet\u65e0\u9700\u7f16\u8bd1\u5c31\u53ef\u4ee5\u652f\u6301\u591a\u79cd\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u63d2\u4ef6\u63a5\u53e3\u3002CRI\u5305\u542b\u4e86\u4e00\u7ec4protocol buffers\uff0cgRPC API\uff0c\u76f8\u5173\u7684\u5e93\uff0c\u4ee5\u53ca\u5728\u6d3b\u8dc3\u5f00\u53d1\u4e0b\u7684\u989d\u5916\u89c4\u8303\u548c\u5de5\u5177\u3002CRI\u76ee\u524d\u662fAlpha\u7248\u672c\u3002<br \/>\n\u652f\u6301\u53ef\u66ff\u6362\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u5728Kubernetes\u4e2d\u6982\u5ff5\u4e2d\u5e76\u975e\u9996\u6b21\u3002\u57281.3\u53d1\u5e03\u7248\u91cc\uff0c\u6211\u4eec\u4ecb\u7ecd\u4e86rktnetes\u9879\u76ee\uff0c\u5b83\u53ef\u4ee5\u8ba9rkt\u5bb9\u5668\u5f15\u64ce\u4f5c\u4e3aDocker\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u4e00\u4e2a\u5907\u9009\u3002\u7136\u800c\uff0c\u4e0d\u7ba1\u662fDocker\u8fd8\u662fRkt\u90fd\u9700\u8981\u901a\u8fc7\u5185\u90e8\u3001\u4e0d\u592a\u7a33\u5b9a\u7684\u63a5\u53e3\u76f4\u63a5\u96c6\u6210\u5230kubelet\u7684\u6e90\u7801\u4e2d\u3002\u8fd9\u6837\u7684\u96c6\u6210\u8fc7\u7a0b\u8981\u6c42\u5341\u5206\u719f\u6089kubelet\u5185\u90e8\u539f\u7406\uff0c\u5e76\u4e14\u8fd8\u4f1a\u5728Kubernetes\u793e\u533a\u5f15\u53d1\u5de8\u5927\u7684\u7ef4\u62a4\u53cd\u54cd\u3002\u8fd9\u4e9b\u56e0\u7d20\u90fd\u5728\u4e3a\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u521d\u671f\u9020\u6210\u4e86\u5de8\u5927\u7684\u56f0\u96be\u3002\u6211\u4eec\u901a\u8fc7\u63d0\u4f9b\u4e00\u4e2a\u6e05\u6670\u5b9a\u4e49\u7684\u62bd\u8c61\u5c42\u6d88\u9664\u4e86\u8fd9\u4e9b\u969c\u788d\uff0c\u5f00\u53d1\u8005\u53ef\u4ee5\u4e13\u6ce8\u4e8e\u6784\u5efa\u4ed6\u4eec\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u3002\u8fd9\u662f\u5f88\u5c0f\u7684\u4e00\u6b65\uff0c\u4f46\u5bf9\u4e8e\u771f\u6b63\u63d0\u4f9b\u53ef\u63d2\u62d4\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u548c\u6784\u5efa\u4e00\u4e2a\u66f4\u5065\u5eb7\u7684\u751f\u6001\u7cfb\u7edf\u5374\u610f\u4e49\u975e\u51e1\u3002<\/p>\n<h2>CRI\u603b\u89c8<\/h2>\n<p>Kubelet\u4e0e\u5bb9\u5668\u8fd0\u884c\u65f6\u901a\u4fe1\uff08\u6216\u8005\u662fCRI\u63d2\u4ef6\u586b\u5145\u4e86\u5bb9\u5668\u8fd0\u884c\u65f6\uff09\u65f6\uff0cKubelet\u5c31\u50cf\u662f\u5ba2\u6237\u7aef\uff0c\u800cCRI\u63d2\u4ef6\u5c31\u50cf\u5bf9\u5e94\u7684\u670d\u52a1\u5668\u3002\u5b83\u4eec\u4e4b\u95f4\u53ef\u4ee5\u901a\u8fc7Unix \u5957\u63a5\u5b57\u6216\u8005gRPC\u6846\u67b6\u8fdb\u884c\u901a\u4fe1\u3002<br \/>\n<img src=\\\"https:\/\/www.kubernetes.org.cn\/img\/2016\/12\/20161222091952.jpg\\\" sizes=\\\"(max-width: 558px) 100vw, 558px\\\" srcset=\\\"https:\/\/www.kubernetes.org.cn\/img\/2016\/12\/20161222091952.jpg 558w, https:\/\/www.kubernetes.org.cn\/img\/2016\/12\/20161222091952-300x73.jpg 300w\\\" alt=\\\"20161222091952\\\" width=\\\"558\\\" height=\\\"135\\\" data-tag=\\\"bdshare\\\" \/><br \/>\nprotocol buffers API\u5305\u542b\u4e86\u4e24\u4e2agRPC\u670d\u52a1\uff1aImageService\u548cRuntimeService\u3002ImageService\u63d0\u4f9b\u4e86\u4ece\u955c\u50cf\u4ed3\u5e93\u62c9\u53d6\u3001\u67e5\u770b\u3001\u548c\u79fb\u9664\u955c\u50cf\u7684RPC\u3002RuntimeSerivce\u5305\u542b\u4e86Pods\u548c\u5bb9\u5668\u751f\u547d\u5468\u671f\u7ba1\u7406\u7684RPC\uff0c\u4ee5\u53ca\u8ddf\u5bb9\u5668\u4ea4\u4e92\u7684\u8c03\u7528(exec\/attach\/port-forward)\u3002\u4e00\u4e2a\u5355\u5757\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u80fd\u591f\u7ba1\u7406\u955c\u50cf\u548c\u5bb9\u5668\uff08\u4f8b\u5982\uff1aDocker\u548cRkt\uff09\uff0c\u5e76\u4e14\u901a\u8fc7\u540c\u4e00\u4e2a\u5957\u63a5\u5b57\u540c\u65f6\u63d0\u4f9b\u8fd9\u4e24\u79cd\u670d\u52a1\u3002\u8fd9\u4e2a\u5957\u63a5\u5b57\u53ef\u4ee5\u5728Kubelet\u91cc\u901a\u8fc7\u6807\u8bc6\u2013container-runtime-endpoint\u548c\u2013image-service-endpoint\u8fdb\u884c\u8bbe\u7f6e\u3002<\/p>\n<h2>\u751f\u547d\u5468\u671f\u7ba1\u7406<\/h2>\n<p>\u5bf9\u4e8e<a href=\\\"https:\/\/www.kubernetes.org.cn\/tags\/pod\\\" target=\\\"_blank\\\" rel=\\\"noopener noreferrer\\\">Pod<\/a>\u548c\u5bb9\u5668\u7684\u751f\u547d\u5468\u671f\u7ba1\u7406\uff0cCRI\u63d0\u4f9b\u4e86\u4e0b\u9762\u7684\u673a\u5236\uff1a<\/p>\n<blockquote><p>service RuntimeService {<br \/>\n\/\/ Sandbox operations.<br \/>\nrpc RunPodSandbox(RunPodSandboxRequest) returns (RunPodSandboxResponse) {}<br \/>\nrpc StopPodSandbox(StopPodSandboxRequest) returns (StopPodSandboxResponse) {}<br \/>\nrpc RemovePodSandbox(RemovePodSandboxRequest) returns (RemovePodSandboxResponse) {}<br \/>\nrpc PodSandboxStatus(PodSandboxStatusRequest) returns (PodSandboxStatusResponse) {}<br \/>\nrpc ListPodSandbox(ListPodSandboxRequest) returns (ListPodSandboxResponse) {}<br \/>\n\/\/ Container operations.<br \/>\nrpc CreateContainer(CreateContainerRequest) returns (CreateContainerResponse) {}<br \/>\nrpc StartContainer(StartContainerRequest) returns (StartContainerResponse) {}<br \/>\nrpc StopContainer(StopContainerRequest) returns (StopContainerResponse) {}<br \/>\nrpc RemoveContainer(RemoveContainerRequest) returns (RemoveContainerResponse) {}<br \/>\nrpc ListContainers(ListContainersRequest) returns (ListContainersResponse) {}<br \/>\nrpc ContainerStatus(ContainerStatusRequest) returns (ContainerStatusResponse) {}<br \/>\n\u2026<br \/>\n}<\/p><\/blockquote>\n<p>\u5728\u8d44\u6e90\u53d7\u9650\u7684\u9694\u79bb\u73af\u5883\u91cc\u7684\u4e00\u7ec4\u5e94\u7528\u5bb9\u5668\u7ec4\u6210\u4e00\u4e2aPod\u3002\u5728CRI\uff0c\u8fd9\u4e2a\u73af\u5883\u88ab\u79f0\u4e3aPodSandbox\u3002\u6211\u4eec\u6545\u610f\u7559\u4e0b\u4e00\u4e9b\u7a7a\u95f4\uff0c\u8ba9\u5bb9\u5668\u8fd0\u884c\u65f6\u6839\u636e\u5b83\u4eec\u5185\u90e8\u4e0d\u540c\u7684\u539f\u7406\u6765\u4ea7\u751f\u4e0d\u540c\u7684PodSandbox\u3002\u5bf9\u4e8e\u57fa\u4e8ehypervisor\u7684\u8fd0\u884c\u65f6\uff0cPodSandbox\u53ef\u80fd\u4ee3\u8868\u7684\u662f\u865a\u62df\u673a\u3002\u5bf9\u4e8e\u5176\u4ed6\u7684\uff0c\u6bd4\u5982Docker\uff0c\u5b83\u53ef\u80fd\u662fLinux\u547d\u540d\u7a7a\u95f4\u3002\u8fd9\u4e2aPodSandbox\u4e00\u5b9a\u9075\u5faa\u7740Pod\u7684\u8d44\u6e90\u5b9a\u4e49\u3002\u5728v1alpha1\u7248API\u91cc\uff0ckubelet\u5c06\u521b\u5efapod\u7ea7\u7684cgroup\u9650\u5236\u4e0b\u7684\u4e00\u7ec4\u8fdb\u7a0b\uff0c\u5e76\u4f20\u9012\u7ed9\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u7531\u6b64\u5b9e\u73b0\u3002<br \/>\n\u5728Pod\u542f\u52a8\u524d\uff0ckubelet\u8c03\u7528RuntimeService.RunPodSandbox\u6765\u521b\u5efa\u73af\u5883\uff0c\u5305\u62ec\u4e3aPod\u8bbe\u7f6e\u7f51\u7edc\uff08\u4f8b\u5982\uff1a\u5206\u914dIP\uff09\u7b49\u3002\u5f53PodSandbox\u542f\u52a8\u540e\uff0c\u5c31\u53ef\u4ee5\u5206\u522b\u521b\u5efa\/\u542f\u52a8\/\u505c\u6b62\/\u79fb\u9664\u72ec\u7acb\u7684\u5bb9\u5668\u3002\u4e3a\u4e86\u5220\u9664Pod\uff0ckubelet\u4f1a\u5728\u505c\u6b62\u548c\u79fb\u9664\u6240\u6709\u5bb9\u5668\u524d\u5148\u505c\u6b62\u548c\u79fb\u9664PodSandbox\u3002<br \/>\nKubelet\u8d1f\u8d23\u901a\u8fc7RPC\u6765\u8fdb\u884c\u5bb9\u5668\u751f\u547d\u5468\u671f\u7684\u7ba1\u7406\uff0c\u6d4b\u8bd5\u5bb9\u5668\u751f\u547d\u5468\u671f\u94a9\u5b50\u548c\u5065\u5eb7\/\u53ef\u8bfb\u6027\u68c0\u67e5\uff0c\u540c\u65f6\u4e3aPod\u63d0\u4f9b\u91cd\u542f\u7b56\u7565\u3002<\/p>\n<h2>\u5bb9\u5668\u4e3a\u4e2d\u5fc3\u7684\u63a5\u53e3<\/h2>\n<p>Kubernetes\u62e5\u6709\u5bf9Pod\u8d44\u6e90\u7684\u58f0\u660e\u5f0fAPI\u3002\u6211\u4eec\u8ba4\u4e3a\u4e00\u4e2a\u53ef\u80fd\u7684\u8bbe\u8ba1\u662f\u4e3a\u4e86\u4f7fCRI\u80fd\u591f\u5728\u5b83\u7684\u62bd\u8c61\u91cc\u91cd\u7528\u8fd9\u4e2a\u58f0\u660e\u5f0f\u7684Pod\u5bf9\u8c61\uff0c\u7ed9\u5bb9\u5668\u8fd0\u884c\u65f6\u5b9e\u73b0\u548c\u6d4b\u8bd5\u8fbe\u5230\u671f\u671b\u72b6\u6001\u7684\u903b\u8f91\u7684\u81ea\u7531\u3002\u8fd9\u4f1a\u6781\u5927\u5730\u7b80\u5316API\uff0c\u5e76\u8ba9CRI\u53ef\u4ee5\u517c\u5bb9\u66f4\u5e7f\u6cdb\u7684\u8fd0\u884c\u65f6\u3002\u5728\u65e9\u671f\u7684\u8bbe\u8ba1\u9636\u6bb5\u6211\u4eec\u8ba8\u8bba\u8fc7\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u4f46\u7531\u4e8e\u51e0\u4e2a\u539f\u56e0\u5426\u51b3\u4e86\u5b83\u3002\u9996\u5148\uff0cKubelet\u6709\u8bb8\u591aPod\u7ea7\u7684\u7279\u6027\u548c\u7279\u5b9a\u7684\u6280\u672f\uff08\u6bd4\u5982crash-loop backoff\u903b\u8f91\uff09\uff0c\u8fd9\u4f1a\u6210\u4e3a\u6240\u6709\u8fd0\u884c\u65f6\u91cd\u65b0\u5b9e\u73b0\u65f6\u7684\u5de8\u5927\u8d1f\u62c5\u3002\u5176\u6b21\uff0c\u8d8a\u6765\u8d8a\u91cd\u8981\u7684\u662f\uff0cPod\u7684\u5b9a\u4e49\u66f4\u65b0\u5feb\u901f\u3002\u53ea\u8981kubelet\u76f4\u63a5\u7ba1\u7406\u5bb9\u5668\uff0c\u90a3\u4e48\u8bb8\u591a\u65b0\u7279\u6027\uff08\u6bd4\u5982init container\uff09\u4e0d\u9700\u8981\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u65f6\u505a\u4efb\u4f55\u6539\u53d8\u3002CRI\u5305\u542b\u4e86\u4e00\u4e2a\u5fc5\u8981\u7684\u5bb9\u5668\u7ea7\u63a5\u53e3\uff0c\u8fd9\u6837\u8fd0\u884c\u65f6\u5c31\u53ef\u4ee5\u5171\u4eab\u8fd9\u4e9b\u7279\u6027\uff0c\u62e5\u6709\u66f4\u5feb\u7684\u5f00\u53d1\u901f\u5ea6\u3002\u5f53\u7136\u8fd9\u5e76\u4e0d\u610f\u5473\u7740\u6211\u4eec\u504f\u79bb\u4e86\u201dlevel triggered\u201d\u54f2\u5b66\u3002kubelet\u8d1f\u8d23\u4fdd\u8bc1\u5b9e\u9645\u72b6\u6001\u5230\u671f\u671b\u72b6\u6001\u7684\u53d8\u5316\u3002<\/p>\n<h2>\u4ea4\u4e92\u8bf7\u6c42<\/h2>\n<blockquote><p>service RuntimeService {<br \/>\n\u2026<br \/>\n\/\/ ExecSync runs a command in a container synchronously.<br \/>\nrpc ExecSync(ExecSyncRequest) returns (ExecSyncResponse) {} \/\/ Exec prepares a streaming endpoint to execute a command in the container.<br \/>\nrpc Exec(ExecRequest) returns (ExecResponse) {} \/\/ Attach prepares a streaming endpoint to attach to a running container.<br \/>\nrpc Attach(AttachRequest) returns (AttachResponse) {} \/\/ PortForward prepares a streaming endpoint to forward ports from a PodSandbox.<br \/>\nrpc PortForward(PortForwardRequest) returns (PortForwardResponse) {}<br \/>\n\u2026<br \/>\n}<\/p><\/blockquote>\n<p>Kubernetes\u63d0\u4f9b\u4e86\u4e00\u4e9b\u7528\u6237\u53ef\u4ee5\u4e0ePod\u53ca\u5176\u5185\u90e8\u5bb9\u5668\u8fdb\u884c\u4ea4\u4e92\u7684\u7279\u6027\uff08\u4f8b\u5982kubectl exec\/attach\/port-forward\uff09\u3002Kubelet\u73b0\u5728\u901a\u8fc7\u8c03\u7528\u5bb9\u5668\u539f\u751f\u7684\u65b9\u6cd5\u6216\u4f7f\u7528\u8282\u70b9\u4e0a\u53ef\u7528\u7684\u5de5\u5177\uff08\u4f8b\u5982nsenter\u548csocat\uff09\u6765\u652f\u6301\u8fd9\u4e9b\u7279\u6027\u3002\u5728\u8282\u70b9\u4e0a\u4f7f\u7528\u8fd9\u4e9b\u5de5\u5177\u4e0d\u662f\u4e00\u4e2a\u53ef\u79fb\u690d\u7684\u597d\u529e\u6cd5\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u5de5\u5177\u7684\u5927\u90e8\u5206\u5047\u5b9aPod\u662f\u901a\u8fc7Linux\u547d\u540d\u7a7a\u95f4\u8fdb\u884c\u9694\u79bb\u7684\u3002\u5728CRI\uff0c\u6211\u4eec\u663e\u5f0f\u5b9a\u4e49\u4e86\u8fd9\u4e9b\u8c03\u7528\uff0c\u5141\u8bb8\u7279\u5b9a\u7684\u8fd0\u884c\u65f6\u5b9e\u73b0\u3002<br \/>\n\u53e6\u5916\u4e00\u4e2a\u6f5c\u5728\u7684\u95ee\u9898\u662f\uff0ckubelet\u5982\u4eca\u7684\u5b9e\u73b0\u662fkubelet\u5904\u7406\u6240\u6709\u7684\u6d41\u5f0f\u8fde\u63a5\u8bf7\u6c42\u3002\u6240\u4ee5\u8fd9\u4f1a\u7ed9\u8282\u70b9\u7684\u7f51\u7edc\u6d41\u91cf\u5e26\u6765\u74f6\u9888\u3002\u5728\u8bbe\u8ba1CRI\u7684\u65f6\u5019\uff0c\u6211\u4eec\u91c7\u7eb3\u4e86\u8fd9\u4e2a\u53cd\u9988\uff0c\u652f\u6301\u8fd0\u884c\u65f6\u9632\u8303\u4e2d\u95f4\u4eba\u3002\u5bb9\u5668\u8fd0\u884c\u65f6\u53ef\u4ee5\u542f\u52a8\u4e00\u4e2a\u5bf9\u5e94\u8bf7\u6c42\u7684\u5355\u72ec\u7684\u6d41\u670d\u52a1\u5668\uff08\u751a\u81f3\u53ef\u80fd\u4e3aPod\u5ba1\u8ba1\u8d44\u6e90\u4f7f\u7528\uff09\uff0c\u5e76\u4e14\u5c06\u5730\u5740\u8fd4\u56de\u7ed9Kubelet\u3002Kubelet\u7136\u540e\u5c06\u8fd9\u4e2a\u4fe1\u606f\u518d\u8fd4\u56de\u7ed9Kubernetes API Server\uff0c\u5b83\u4f1a\u6253\u5f00\u76f4\u63a5\u4e0e\u8fd0\u884c\u65f6\u63d0\u4f9b\u7684\u670d\u52a1\u5668\u76f8\u8fde\u7684\u6d41\u8fde\u63a5\uff0c\u5e76\u5c06\u5b83\u8ddf\u5ba2\u6237\u7aef\u8fde\u901a\u3002<br \/>\n\u8fd9\u7bc7\u535a\u6587\u5e76\u6ca1\u6709\u5305\u542bCRI\u7684\u5168\u90e8\u3002\u66f4\u591a\u7ec6\u8282\u8bf7\u53c2\u8003\u8bbe\u8ba1\u6587\u6863\u548c\u5efa\u8bae\u3002<\/p>\n<h2>\u5f53\u524d\u72b6\u6001<\/h2>\n<p>\u5c3d\u7ba1CRI\u8fd8\u5904\u4e8e\u65e9\u671f\u9636\u6bb5\uff0c\u5df2\u7ecf\u6709\u4e0d\u5c11\u4f7f\u7528CRI\u6765\u96c6\u6210\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u9879\u76ee\u5728\u5f00\u53d1\u4e2d\u3002\u4e0b\u9762\u662f\u4e00\u4e9b\u5217\u5b50\uff1a<\/p>\n<ul>\n<li>cri-o: OCI\u8fd0\u884c\u65f6<\/li>\n<li>rktlt: rkt\u5bb9\u5668\u8fd0\u884c\u65f6<\/li>\n<li>frakti: \u57fa\u4e8ehypervisor\u7684\u5bb9\u5668\u8fd0\u884c\u65f6<\/li>\n<li>docker CRI shim<\/li>\n<\/ul>\n<p>\u5982\u679c\u4f60\u5bf9\u4e0a\u9762\u5217\u51fa\u7684\u8fd9\u4e9b\u8fd0\u884c\u65f6\u611f\u5174\u8da3\uff0c\u4f60\u53ef\u4ee5\u5173\u6ce8\u8fd9\u4e9b\u72ec\u7acb\u7684github\u4ed3\u5e93\uff0c\u83b7\u53d6\u6700\u65b0\u7684\u8fdb\u5c55\u548c\u8bf4\u660e\u3002<br \/>\n\u5bf9\u96c6\u6210\u65b0\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u611f\u5174\u8da3\u7684\u5f00\u53d1\u8005\uff0c\u8bf7\u53c2\u8003\u5f00\u53d1\u6307\u5357\u4e86\u89e3\u8fd9\u4e9bAPI\u7684\u9650\u5236\u548c\u95ee\u9898\u3002\u6211\u4eec\u4f1a\u4ece\u65e9\u671f\u7684\u5f00\u53d1\u8005\u90a3\u91cc\u79ef\u6781\u91c7\u7eb3\u53cd\u9988\u6765\u63d0\u5347API\u3002\u5f00\u53d1\u8005\u53ef\u80fd\u4f1a\u9047\u5230API\u7684\u4e00\u4e9b\u610f\u5916\u6539\u52a8\uff08\u6bd5\u7adf\u662fAlpha\u7248\uff09\u3002<\/p>\n<h2>\u96c6\u6210CRI-Docker<\/h2>\n<p>Kubelet\u81f3\u4eca\u8fd8\u6ca1\u6709\u9ed8\u8ba4\u4f7f\u7528CRI\uff0c\u4f46\u6211\u4eec\u4ecd\u5728\u79ef\u6781\u5730\u63a8\u52a8\u3002\u7b2c\u4e00\u6b65\u5c31\u662f\u4f7f\u7528CRI\u5c06Docker\u91cd\u65b0\u96c6\u6210\u5230kubelet\u91cc\u3002\u57281.5\u53d1\u5e03\u7248\u91cc\uff0c\u6211\u4eec\u6269\u5c55\u4e86Kubelet\u6765\u652f\u6301CRI\uff0c\u5e76\u4e14\u4e3aDocker\u6dfb\u52a0\u4e86\u5185\u7f6e\u7684CRI\u63d2\u4ef6\u3002kubelet\u542f\u52a8\u4e00\u4e2agRPC\u670d\u52a1\u5668\uff0c\u4ee3\u8868Docker\u3002\u5982\u679c\u5c1d\u8bd5\u65b0\u7684kubelet-CRI-Docker\u96c6\u6210\uff0c\u4f60\u53ef\u80fd\u4ec5\u4ec5\u4f1a\u4f7f\u7528\u2013feature-gates=StreamingProxyRedirects=true\u6765\u6253\u5f00Kubernetes API Server\uff0c\u4ee5\u542f\u52a8\u65b0\u7684\u6d41\u91cd\u5b9a\u5411\u7279\u6027\uff0c\u5e76\u4e14\u901a\u8fc7\u8bbe\u7f6ekubelet\u7684\u6807\u8bc6\u2013experimental-cri=true\u6765\u542f\u52a8\u3002<br \/>\n\u9664\u4e86\u4e00\u4e9b\u6b20\u7f3a\u7684\u7279\u6027\uff0c\u65b0\u7684\u96c6\u6210\u53ef\u4ee5\u4e00\u76f4\u901a\u8fc7\u4e3b\u8981\u7684\u7aef\u5230\u7aef\u6d4b\u8bd5\u3002\u6211\u4eec\u8ba1\u5212\u5c3d\u5feb\u6269\u5c55\u6d4b\u8bd5\u7684\u8986\u76d6\u7387\uff0c\u5e76\u4e14\u9f13\u52b1\u793e\u533a\u53cd\u5e94\u5173\u4e8e\u8fd9\u4e2a\u8f6c\u5316\u7684\u4efb\u4f55\u95ee\u9898\u3002<\/p>\n<h2>Minikube\u4e0eCRI<\/h2>\n<p>\u5982\u679c\u4f60\u60f3\u8981\u5c1d\u8bd5\u65b0\u7684\u96c6\u6210\uff0c\u4f46\u662f\u6ca1\u6709\u65f6\u95f4\u5728\u4e91\u4e0a\u542f\u52a8\u4e00\u4e2a\u65b0\u7684\u6d4b\u8bd5\u96c6\u7fa4\u3002minikube\u662f\u4e00\u4e2a\u5f88\u68d2\u7684\u5de5\u5177\uff0c\u4f60\u53ef\u4ee5\u8fc5\u901f\u5728\u672c\u5730\u642d\u5efa\u96c6\u7fa4\u3002\u5728\u4f60\u5f00\u59cb\u524d\uff0c\u8bf7\u9605\u8bfb\u8bf4\u660e\u5e76\u4e0b\u8f7d\u5b89\u88c5Minikube\uff1a<br \/>\n1. \u68c0\u67e5\u53ef\u7528\u7684Kubernetes\u7248\u672c\uff0c\u9009\u62e9\u53ef\u7528\u7684\u6700\u65b01.5.x\u7248\u672c\u3002\u6211\u4eec\u4f7f\u7528v1.5.0-beta.1\u4f5c\u4e3a\u793a\u4f8b\u3002<\/p>\n<pre>$ minikube get-k8s-versions<\/pre>\n<p>2. \u901a\u8fc7\u5185\u5efa\u7684Docker CRI\u96c6\u6210\u542f\u52a8\u4e00\u4e2aMinikube\u96c6\u7fa4\u3002 \u2013extra-config=kubelet.EnableCRI=true\u5f00\u542f\u4e86kubelet\u7684CRI\u5b9e\u73b0\u3002\u2013network-plugin=kubenet\u548c\u2013extra-<br \/>\nconfig=kubelet.PodCIDR=10.180.1.0\/24\u8bbe\u7f6eKubenet\u7f51\u7edc\u63d2\u4ef6\uff0c\u4fdd\u8bc1\u5206\u914d\u7ed9\u8282\u70b9\u7684PodCIDR\u3002\u2013iso-url\u8bbe\u7f6e\u672c\u5730\u8282\u70b9\u542f\u52a8\u7684minikube iso\u955c\u50cf\u3002<\/p>\n<pre>$ minikube start --kubernetes-version=v1.5.0-beta.1 --extra-config=kubelet.EnableCRI=true --network-plugin=kubenet --extra-config=kubelet.PodCIDR=10.180.1.0\/24 --iso-url=http:\/\/storage.googleapis.com\/minikube\/iso\/buildroot\/minikube-v0.0.6.iso<\/pre>\n<p>3. \u68c0\u67e5minikube\u65e5\u5fd7\uff0c\u67e5\u770b\u542f\u52a8CRI<\/p>\n<pre>$ minikube logs | grep EnableCRI\n I1209 01:48:51.150789 3226 localkube.go:116] Setting EnableCRI to true on kubelet.<\/pre>\n<p>4. \u521b\u5efapod\uff0c\u68c0\u67e5\u5b83\u7684\u72b6\u6001\u3002\u4f60\u5e94\u8be5\u53ef\u4ee5\u770b\u89c1\u4e00\u4e2a\u201dSandboxReceived\u201d\u4e8b\u4ef6\uff0c\u8bc1\u660eKubelet\u5728\u4f7f\u7528CRI<\/p>\n<pre>$ kubectl run foo --image=gcr.io\/google_containers\/pause-amd64:3.0\n deployment \\\"foo\\\" created\n $ kubectl describe pod foo\n ...\n ... From Type Reason Message\n ... ----------------- ----- --------------- -----------------------------\n ...{default-scheduler } Normal Scheduled Successfully assigned foo-141968229-v1op9 to minikube\n ...{kubelet minikube} Normal SandboxReceived Pod sandbox received, it will be created.\n ...<\/pre>\n<p>\u6ce8\u610f\uff1akubectl attach\/exec\/port-forward\u8fd8\u4e0d\u80fd\u5728minikube\u7684CRI\u4e2d\u8fd0\u884c\u3002\u4f46\u8fd9\u4f1a\u5728\u65b0\u7248\u672c\u7684minikube\u4e2d\u5f97\u5230\u6539\u5584\u3002<br \/>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>Kubernetes\u8282\u70b9\u7684\u5e95\u5c42\u7531\u4e00\u4e2a\u53eb\u505a\u201c\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\u7684\u8f6f\u4ef6\u8fdb\u884c\u652f\u6491\uff0c\u5b83\u8d1f\u8d23\u6bd4\u5982\u542f\u505c\u5bb9\u5668\u8fd9\u6837\u7684\u4e8b\u60c5\u3002\u6700\u5e7f\u4e3a\u4eba\u77e5 &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"\" href=\"http:\/\/www.weijing.co\/?p=1892\"> <span class=\"screen-reader-text\">Kubernetes(k8s)\u5bb9\u5668\u8fd0\u884c\u65f6(CRI)\u7b80\u4ecb<\/span> \u67e5\u770b\u5168\u6587 &raquo;<\/a><\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"default","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":""},"categories":[108,104,123],"tags":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"mailpoet_newsletter_max":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false,"shop_catalog":false,"shop_single":false,"shop_thumbnail":false},"uagb_author_info":{"display_name":"weijing","author_link":"http:\/\/www.weijing.co\/?author=4"},"uagb_comment_info":0,"uagb_excerpt":"Kubernetes\u8282\u70b9\u7684\u5e95\u5c42\u7531\u4e00\u4e2a\u53eb\u505a\u201c\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\u7684\u8f6f\u4ef6\u8fdb\u884c\u652f\u6491\uff0c\u5b83\u8d1f\u8d23\u6bd4\u5982\u542f\u505c\u5bb9\u5668\u8fd9\u6837\u7684\u4e8b\u60c5\u3002\u6700\u5e7f\u4e3a\u4eba\u77e5&hellip;","_links":{"self":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1892"}],"collection":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1892"}],"version-history":[{"count":0,"href":"http:\/\/www.weijing.co\/index.php?rest_route=\/wp\/v2\/posts\/1892\/revisions"}],"wp:attachment":[{"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1892"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1892"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.weijing.co\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1892"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}