\u8fd9\u91cc\u9700\u8981\u5f3a\u8c03\u7684\u662f\uff0c\u5728\u5f53\u65f6\uff0cDocker\u662f\u4e00\u4e2a\u5355\u4f53\u7cfb\u7edf\uff0c\u5e76\u6ca1\u6709\u8003\u8651\u5230\u8981\u4e0e\u5176\u4ed6\u7cfb\u7edf\u6bd4\u5982k8s\u5bf9\u63a5\uff0c\u6240\u4ee5docker\u672c\u8eab\u63d0\u4f9b\u4e86\u5c3d\u53ef\u80fd\u5b8c\u5584\u7684\u529f\u80fd\u3002
\n\u4f46\u662f\uff0cdocker\u8bbe\u8ba1\u5de7\u5999\u4e4b\u5904\u5728\u4e8e\uff0c\u4e0a\u8ff0\u8fd9\u4e9b\u529f\u80fd\u4e2d\u6ca1\u6709\u4e00\u4e2a\u662f\u771f\u6b63\u76f8\u4e92\u4f9d\u8d56\u7684\u3001\u90fd\u662f\u89e3\u8026\u5408\u7684\u3002\u4e5f\u5c31\u662f\u8bf4\u8fd9\u4e9b\u529f\u80fd\u4e2d\u7684\u6bcf\u4e00\u4e2a\u90fd\u80fd\u591f\u5728\u3001\u53ef\u4ee5\u4e00\u8d77\u4f7f\u7528\u7684\u3001\u66f4\u5c0f\u3001\u66f4\u96c6\u4e2d\u7684\u5de5\u5177\u4e2d\u5b9e\u73b0\u3002\u6bcf\u4e2a\u5de5\u5177\u90fd\u53ef\u4ee5\u901a\u8fc7\u4f7f\u7528\u4e00\u79cd\u901a\u7528\u683c\u5f0f\u3001\u4e00\u79cd\u5bb9\u5668\u6807\u51c6\u6765\u534f\u540c\u5de5\u4f5c\u3002<\/p>\n
\u81ea\u4ecedocker\u53d1\u5e03\u4e4b\u540e\uff0c\u4fbf\u4e00\u70ae\u800c\u7ea2\uff0c\u5f88\u5feb\u7528\u7684\u4eba\u8d8a\u6765\u8d8a\u591a\uff0c
\n\u5927\u5bb6\u90fd\u610f\u8bc6\u5230\u5bb9\u5668\u65f6\u4ee3\u7684\u5230\u6765\uff0c\u5f88\u591a\u4eba\u4ece\u8fd9\u91cc\u9762\u55c5\u5230\u4e86\u91d1\u94b1\u7684\u5473\u9053\uff0c\u4f60\u80fd\u53d1\u5e03\u4e00\u4e2adocker\u5bb9\u5668\u6280\u672f\uff0c\u6211\u4e5f\u80fd\u53d1\u5e03\u4e00\u4e2afucker\u5bb9\u5668\u6280\u672f\uff0c\u5c31\u597d\u6bd4\u662fCS\u6e38\u620f\u706b\u4e86\uff0c\u6211\u7acb\u9a6c\u6284\u4e00\u4e2a\u7a7f\u8d8a\u706b\u7ebf\u4e00\u4e2a\u9053\u7406
\n\u4e8e\u662f\u5f88\u591a\u7ec4\u7ec7\u6216\u4e2a\u4eba\u90fd\u53c2\u4e0e\u5230\u4e86\u5bb9\u5668\u7684\u5f00\u53d1\u5de5\u4f5c\u4e2d\u6765\uff0c\u5bfc\u81f4\u5bb9\u5668\u7531\u5f88\u591a\u4e0d\u540c\u7684\u5b9e\u73b0\uff0c\u4f46\u957f\u6b64\u4ee5\u5f80\u5fc5\u7136\u4f1a\u5f15\u8d77\u6df7\u4e71\u3001\u4e0d\u517c\u5bb9\u3002\u201c\u4e3a\u4e86\u89e3\u51b3\u8fd9\u4e00\u95ee\u9898\u201d<\/p>\n
Docker\u3001Google\u3001CoreOS \u548c\u5176\u4ed6\u4f9b\u5e94\u5546\u4e8e 2015-6-22 \u5efa\u7acb\u7684\u4e00\u4e2a\u5f00\u6e90\u7ec4\u7ec7\uff0c\u540d\u4e3aOCI\uff0c\u5168\u79f0 Open Container Initiative\/\u5f00\u653e\u5bb9\u5668\u5021\u8bae \uff0c\u96b6\u5c5e\u4e8eLinux\u57fa\u91d1\u4f1a\uff0c\u5176\u76ee\u7684\u4e3b\u8981\u662f\u4e3a\u4e86\u5236\u5b9a\u5bb9\u5668\u6280\u672f\u7684\u901a\u7528\u6280\u672f\u6807\u51c6\u3002<\/p>\n
\u4fd7\u8bdd\u8bf4\u5f97\u597d\uff0c\u52c7\u58eb\u6218\u80dc\u6076\u9f99\u4e4b\u65e5\uff0c\u81ea\u8eab\u4ea6\u5316\u4f5c\u6076\u9f99\u3002\n\u4e0d\u7ba1\u662fDocker \u516c\u53f8\u540e\u6765\u5404\u79cd\u795e\u64cd\u4f5c\uff08\u628a\u9879\u76ee\u6539\u540d Moby \uff0cdocker swarm \u7684\u5f31\u9e21\u7f16\u6392\uff09\u4e5f\u597d\uff0cCoreOS \u7684\u5d1b\u8d77\u4e5f\u7f62\uff0c\n\u5f00\u6e90\u4e16\u754c\u7684\u6218\u4e89\uff0c\u662f\u4e00\u79cd\u6280\u672f\u6807\u51c6\u7684\u5168\u7403\u8bdd\u8bed\u6743\u4e89\u593a\uff0c\u8fd9\u79cd\u4e89\u593a\u8fdc\u6bd4\u4f60\u60f3\u8c61\u7684\u8981\u6b8b\u9177\u3002<\/code><\/pre>\n\u76ee\u524dOCI\u65d7\u4e0b\u4e3b\u8981\u6709\u4e24\u4e2a\u6807\u51c6\u6587\u6863\uff1a<\/p>\n
1\u3001\u5bb9\u5668\u8fd0\u884c\u65f6\u6807\u51c6 \uff08runtime spec\uff09<\/a><\/p>\n2\u3001\u5bb9\u5668\u955c\u50cf\u6807\u51c6\uff08image spec\uff09\u3002<\/a><\/p>\n![\"\"](\"data:image\/svg+xml;base64,PCEtLUFyZ29uTG9hZGluZy0tPgo8c3ZnIHdpZHRoPSIxIiBoZWlnaHQ9IjEiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyIgc3Ryb2tlPSIjZmZmZmZmMDAiPjxnPjwvZz4KPC9zdmc+\")
<\/div><\/p>\nOCI \u5bf9\u5bb9\u5668 runtime \u7684\u6807\u51c6\u4e3b\u8981\u662f\u6307\u5b9a\u5bb9\u5668\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u548c runtime \u9700\u8981\u63d0\u4f9b\u7684\u547d\u4ee4\u3002\u4e0b\u56fe\u53ef\u4ee5\u662f\u5bb9\u5668\u72b6\u6001\u8f6c\u6362\u56fe\uff1a<\/p>\n
<\/div><\/p>\n\n- init \u72b6\u6001\uff1a\u8be5\u72b6\u6001\u5e76\u4e0d\u5728\u6807\u51c6\u4e2d\uff0c\u8868\u793a\u6ca1\u6709\u5bb9\u5668\u5b58\u5728\u7684\u521d\u59cb\u72b6\u6001<\/li>\n
- creating\uff1a\u4f7f\u7528 create \u547d\u4ee4\u521b\u5efa\u5bb9\u5668\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u79f0\u4e3a\u521b\u5efa\u4e2d<\/li>\n
- created\uff1a\u5bb9\u5668\u521b\u5efa\u51fa\u6765\uff0c\u4f46\u662f\u8fd8\u6ca1\u6709\u8fd0\u884c\uff0c\u8868\u793a\u955c\u50cf\u548c\u914d\u7f6e\u6ca1\u6709\u9519\u8bef\uff0c\u5bb9\u5668\u80fd\u591f\u8fd0\u884c\u5728\u5f53\u524d\u5e73\u53f0<\/li>\n
- running\uff1a\u5bb9\u5668\u7684\u8fd0\u884c\u72b6\u6001\uff0c\u91cc\u9762\u7684\u8fdb\u7a0b\u5904\u4e8e up \u72b6\u6001\uff0c\u6b63\u5728\u6267\u884c\u7528\u6237\u8bbe\u5b9a\u7684\u4efb\u52a1<\/li>\n
- stopped\uff1a\u5bb9\u5668\u8fd0\u884c\u5b8c\u6210\uff0c\u6216\u8005\u8fd0\u884c\u51fa\u9519\uff0c\u6216\u8005 stop \u547d\u4ee4\u4e4b\u540e\uff0c\u5bb9\u5668\u5904\u4e8e\u6682\u505c\u72b6\u6001\u3002\u8fd9\u4e2a\u72b6\u6001\uff0c\u5bb9\u5668\u8fd8\u6709\u5f88\u591a\u4fe1\u606f\u4fdd\u5b58\u5728\u5e73\u53f0\u4e2d\uff0c\u5e76\u6ca1\u6709\u5b8c\u5168\u88ab\u5220\u9664<\/li>\n<\/ul>\n
\u4e8c\u3001docker\u7684\u5206\u5c42<\/h1>\n2.1 docker\u7684\u6784\u6210<\/h2>\n
\u524d\u6587\u63d0\u5230OCI\u7ec4\u7ec7\uff0c\u4e3a\u4e86\u8ba9\u5bb9\u5668\u6280\u672f\u5f97\u5230\u66f4\u597d\u7684\u53d1\u5c55\uff0c\u6216\u8bb8\u4e5f\u662f\u4e3a\u4e86\u638c\u63e1\u6280\u672f\u6807\u51c6\u7684\u5168\u7403\u8bdd\u8bed\u6743\uff0c
\ndocker\u6ca1\u6709\u9009\u62e9\u4e00\u5bb6\u72ec\u5927\uff0c
\n\u4ece Docker 1.11 \u4e4b\u540e\uff0cDocker Daemon\u7531\u5f53\u5e74\u7684\u5355\u4f53\u5b9e\u73b0\u88ab\u5206\u6210\u4e86\u591a\u4e2a\u6807\u51c6\u7684\u6a21\u5757\u3002\u6807\u51c6\u5316\u7684\u76ee\u7684\u662f\u6a21\u5757\u662f\u53ef\u88ab\u5176\u4ed6\u5b9e\u73b0\u66ff\u6362\u7684\uff0c\u4e0d\u7531\u4efb\u4f55\u4e00\u4e2a\u5382\u5546\u63a7\u5236\u3002<\/strong><\/p>\n\u62c6\u5206\u4e4b\u540e\uff0cdocker\u7684\u7ed3\u6784\u5206\u6210\u4e86\u4ee5\u4e0b5\u4e2a\u90e8\u5206\/\u6a21\u5757\uff1a
\n
<\/div><\/p>\n\n- \n
1\u3001docker-client\uff1a\u5ba2\u6237\u7aef\u547d\u4ee4<\/p>\n<\/li>\n
- \n
2\u3001dockerd\u5b88\u62a4\u8fdb\u7a0b\uff0c\u5168\u79f0docker daemon
\n\u63d0\u4f9b\u5ba2\u6237\u7aef\u547d\u4ee4\u63a5\u53e3<\/p>\n<\/li>\n
- \n
3\u3001containerd\u670d\u52a1
\ncontainerd \u72ec\u7acb\u8d1f\u8d23\u5bb9\u5668\u8fd0\u884c\u65f6\u548c\u751f\u547d\u5468\u671f\uff08\u5982\u521b\u5efa\u3001\u542f\u52a8\u3001\u505c\u6b62\u3001\u4e2d\u6b62\u3001\u4fe1\u53f7\u5904\u7406\u3001\u5220\u9664\u7b49\uff09\uff0c\u5176\u4ed6\u4e00\u4e9b\u5982\u955c\u50cf\u6784\u5efa\u3001\u5377\u7ba1\u7406\u3001\u65e5\u5fd7\u7b49\u7531 dockerd\uff08docker daemon\uff09 \u7684\u5176\u4ed6\u6a21\u5757\u5904\u7406\u3002<\/p>\n<\/li>\n
- \n
4\u3001containerd-shim\u8fdb\u7a0b\uff1a\u8be5\u8fdb\u7a0b\u7531containerd\u670d\u52a1\u521b\u5efa
\n\u6bcf\u521b\u5efa\u4e00\u4e2a\u5bb9\u5668\uff0c\u90fd\u4f1a\u542f\u52a8\u4e00\u4e2acontainerd-shim\u8fdb\u7a0b\uff0c\u7136\u540e\u7531\u8be5\u8fdb\u7a0b\u8c03\u7528runc\u6765\u5177\u4f53\u521b\u5efa\u5bb9\u5668<\/p>\n<\/li>\n
- \n
5\u3001runc\u7ec4\u6210\uff1a\u7531container-shim\u8fdb\u7a0b\u8c03\u7528runc\u521b\u5efa\u51fa\u7684\u5bb9\u5668\u8fdb\u7a0b
\n\u6700\u65e9docker\u53ea\u662f\u628aRunC \u5355\u62ff\u51fa\u6765\uff0c\u6350\u8d60\u7ed9 OCI \u4f5c\u4e3aOCI \u5bb9\u5668\u8fd0\u884c\u65f6\u6807\u51c6\u7684\u53c2\u8003\u5b9e\u73b0\uff08\u8fd9\u4e2a\u4f60\u5f97\u670d\uff0c\u56e0\u4e3adocker\u7684\u8bbe\u8ba1\u5c31\u662f\u6bd4\u5927\u591a\u6570\u5bb9\u5668\u6280\u672f\u7684\u5b9e\u73b0\u4f18\u79c0\u4e00\u4e9b\uff0c\u6240\u4ee5docker\u8bf4\u6211\u628a\u6211\u7684\u5b9e\u73b0\u5206\u4eab\u51fa\u6765\uff0c\u5927\u5bb6\u4e5f\u5c31\u522b\u521b\u9020\u4e86\uff0c\u7167\u7740\u6211\u7684\u6765\u5c31\u884c\uff09\uff0c\u5373runc\u5c31\u662f\u5b89\u88c5oci\u6807\u51c6\u5b9e\u73b0\u7684\uff0c\u4f7f\u7528runc\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u7b26\u5408oci\u89c4\u8303\u7684\u5bb9\u5668\u3002<\/p>\n<\/li>\n<\/ul>\n
2.2 \u4e3a\u4f55\u9700\u8981\u6709containerd-shim\u8fd9\u4e2a\u8fdb\u7a0b<\/h2>\n
\u73b0\u5728\u521b\u5efa\u4e00\u4e2adocker\u5bb9\u5668\u7684\u65f6\u5019\uff08\u6ce8\u610f\u6211\u8bf4\u7684\u662fdocker\u5bb9\u5668\u800c\u4e0d\u662f\u5176\u4ed6\u79cd\u7c7b\u7684\u5bb9\u5668\uff09\uff0cDocker Daemon \u5e76\u4e0d\u80fd\u76f4\u63a5\u5e2e\u6211\u4eec\u521b\u5efa\u4e86\uff0c\u800c\u662f\u8bf7\u6c42 containerd \u670d\u52a1\u6765\u521b\u5efa\u4e00\u4e2a\u5bb9\u5668
\n\u3002\u5f53containerd \u6536\u5230\u8bf7\u6c42\u540e\uff0c\u4e5f\u4e0d\u4f1a\u76f4\u63a5\u53bb\u64cd\u4f5c\u5bb9\u5668\uff0c\u800c\u662f\u521b\u5efa\u4e00\u4e2a\u53eb\u505a containerd-shim \u7684\u8fdb\u7a0b\u3002\u8ba9\u8fd9\u4e2a\u8fdb\u7a0b\u53bb\u64cd\u4f5c\u5bb9\u5668\uff0c\u6211\u4eec\u6307\u5b9a\u5bb9\u5668\u8fdb\u7a0b\u662f\u9700\u8981\u4e00\u4e2a\u7236\u8fdb\u7a0b\u6765\u505a\u72b6\u6001\u6536\u96c6\u3001\u7ef4\u6301 stdin \u7b49 fd \u6253\u5f00\u7b49\u5de5\u4f5c\u7684\uff0c\u5047\u5982\u8fd9\u4e2a\u7236\u8fdb\u7a0b\u5c31\u662f containerd\uff0c\u90a3\u5982\u679c containerd \u6302\u6389\u7684\u8bdd(\u4f8b\u5982\u91cd\u542fdocker\u670d\u52a1\u65f6)\uff0c\u6574\u4e2a\u5bbf\u4e3b\u673a\u4e0a\u6240\u6709\u7684\u5bb9\u5668\u90fd\u5f97\u9000\u51fa\u4e86<\/strong>\uff0c\u800c\u5f15\u5165 containerd-shim \u8fd9\u4e2a\u57ab\u7247\u5c31\u53ef\u4ee5\u6765\u89c4\u907f\u8fd9\u4e2a\u95ee\u9898\u4e86\uff0c\u6211\u4eec\u4e4b\u524d\u5b66\u4e60\u7684\u914d\u7f6e\u53c2\u6570live-restore\u5c31\u662f\u57fa\u4e8e\u8be5\u8bbe\u8ba1\u800c\u6765\u3002<\/p>\n\u4e5f\u5c31\u8bf4\u771f\u6b63\u542f\u52a8\u5bb9\u5668\u662f\u901a\u8fc7 containerd-shim \u53bb\u8c03\u7528 runc \u6765\u542f\u52a8\u5bb9\u5668\u7684\uff0c
\n\u542f\u52a8\u5bb9\u5668\u9700\u8981\u505a\u4e00\u4e9b namespaces \u548c cgroups \u7684\u914d\u7f6e\uff0c\u4ee5\u53ca\u6302\u8f7d root \u6587\u4ef6\u7cfb\u7edf\u7b49\u64cd\u4f5c\u3002runc \u4f1a\u6309\u7167OCI \u6807\u51c6\u6765\u521b\u5efa\u4e00\u4e2a\u7b26\u5408\u89c4\u8303\u7684\u5bb9\u5668\u3002<\/p>\n
\u9700\u8981\u5f3a\u8c03\u7684\u662f\uff1a
\nrunc \u542f\u52a8\u5b8c\u5bb9\u5668\u540e\u672c\u8eab\u4f1a\u76f4\u63a5\u9000\u51fa\uff0ccontainerd-shim \u5219\u4f1a\u6210\u4e3a\u5bb9\u5668\u8fdb\u7a0b\u7684\u7236\u8fdb\u7a0b, \u8d1f\u8d23\u6536\u96c6\u5bb9\u5668\u8fdb\u7a0b\u7684\u72b6\u6001, \u4e0a\u62a5\u7ed9 containerd, \u5e76\u5728\u5bb9\u5668\u4e2d pid \u4e3a 1 \u7684\u8fdb\u7a0b\u9000\u51fa\u540e\u63a5\u7ba1\u5bb9\u5668\u4e2d\u7684\u5b50\u8fdb\u7a0b\u8fdb\u884c\u6e05\u7406, \u786e\u4fdd\u4e0d\u4f1a\u51fa\u73b0\u50f5\u5c38\u8fdb\u7a0b\u3002<\/p>\n
2.3 containerd\u3001containerd-shim\u53ca\u5bb9\u5668\u8fdb\u7a0b\u7684\u5173\u7cfb<\/h2>\n
\u57fa\u4e8e2.2\u5c0f\u8282\u6211\u4eec\u77e5\u9053
\ncontainerd\uff0ccontainerd-shim\u548c\u5bb9\u5668\u8fdb\u7a0b(\u5373\u5bb9\u5668\u4e3b\u8fdb\u7a0b)\u4e09\u4e2a\u8fdb\u7a0b\uff0c\u662f\u6709\u4f9d\u8d56\u5173\u7cfb\u7684\u3002<\/p>\n
<\/div><\/p>\n\u5c42\u7ea7\u5173\u7cfb\u603b\u7ed3\u5982\u4e0b<\/p>\n
dockerd\n containerd\n containerd-shim----runc---->\u5bb9\u5668\u8fdb\u7a0b\n containerd-shim----runc---->\u5bb9\u5668\u8fdb\u7a0b\n containerd-shim----runc---->\u5bb9\u5668\u8fdb\u7a0b<\/code><\/pre>\n\u4e09 runtime\u5bb9\u5668\u8fd0\u884c\u65f6<\/h1>\n3.1 \u5bb9\u5668\u8fd0\u884c\u65f6\u5206\u7c7b<\/h2>\n
runtime\u7ffb\u8bd1\u4e3a\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u6307\u7684\u662f\u7528\u6765\u7ba1\u7406\u955c\u50cf\u6216\u5bb9\u5668\u7684\u8f6f\u4ef6\uff0c\u4e4b\u6240\u4ee5\u8d77\u540d\u4e3a\u201c\u5bb9\u5668\u8fd0\u884c\u65f6\u201c\uff0c\u5927\u6982\u662f\u60f3\u8868\u8fbe\u6b64\u7c7b\u8f6f\u4ef6\u662f\u7528\u4e8e\u5bb9\u5668\u8fd0\u884c\u65f6\u671f\u7684\u6d89\u53ca\u5230\u7ba1\u7406\u64cd\u4f5c\uff0c\u4f8b\u5982\u7ba1\u7406\u955c\u50cf\u3001\u5bb9\u5668\u7b49<\/p>\n
\u4ecedocker\u7684\u6784\u6210\u56fe\u4e2d\uff0c\u53ea\u6807\u6ce8\u4e86runc\u4e3aruntime\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u4f46\u4e8b\u5b9e\u4e0a\uff0c\u7528\u4e8e\u7ba1\u7406\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u8bf8\u591a\u64cd\u4f5c\u7684\u8f6f\u4ef6\u90fd\u53ef\u4ee5\u79f0\u4e4b\u4e3a\u4e3aruntime\u8f6f\u4ef6\uff0c\u6240\u4ee5\u4f60\u770b\u5230\u7684docker\u6784\u6210\u4e2d\u7684dockerd\u3001containerd\u90fd\u5e94\u8be5\u5c5e\u4e8eruntime\uff0c<\/p>\n
\u4f46dockerd\u3001containerd\u8fd8\u6709runc\u5404\u81ea\u8d1f\u8d23\u7684\u4e8b\u60c5\u4e0d\u540c\uff0c\u6240\u4ee5\u4e3a\u4e86\u66f4\u597d\u7684\u533a\u5206\u5f00\u4ed6\u4eec\uff0c\u6211\u4eec\u5c06\u5bb9\u5668\u8fd0\u884c\u65f6\u8f6f\u4ef6\u5206\u4e3a\u4e24\u5927\u7c7b
\n1\u3001Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\uff1a\u6bd4\u5982lxc\u3001runc\u3001gvisor\u3001kata\u7b49\uff0c\u53ea\u6d89\u53ca\u5230\u5bb9\u5668\u8fd0\u884c\u7684\u4e00\u4e9b\u57fa\u7840\u7ec6\u8282\uff0c\u6bd4\u5982namespace\u521b\u5efa\u3001cgroup\u8bbe\u7f6e\uff0c
\n2\u3001High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\uff1a\u6bd4\u5982docker\u3001containerd\u3001podman\u7b49\uff0c\u652f\u6301\u66f4\u591a\u9ad8\u7ea7\u529f\u80fd\uff08\u5982\u955c\u50cf\u7ba1\u7406\u548cgRPC \/ Web API\uff09\uff0c\u5bf9\u4e8e\u9ad8\u7ea7\u522b\u8fd0\u884c\u65f6\u6765\u8bf4\uff0c\u4ed6\u4eec\u662f\u901a\u8fc7\u8c03\u7528\u4f4e\u7ea7\u522b\u8fd0\u884c\u65f6\u6765\u7ba1\u7406\u5bb9\u5668\uff08\u53ef\u4ee5\u7b80\u5355\u7684\u7406\u89e3\u4e3a\u9ad8\u7ea7\u522b\u662f\u5728\u4f4e\u7ea7\u522b\u57fa\u7840\u4e0a\u7684\u4e0a\u5c42\u5c01\u88c5\uff09\uff0c\u4e00\u822c\u53ef\u4ee5\u662frunc\u4f5c\u4e3a\u4f4e\u7ea7\u522b\u8fd0\u884c\u65f6<\/p>\n
\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5f00\u53d1\u4eba\u5458\u60f3\u8981\u8fd0\u884c\u4e00\u4e2a\u5bb9\u5668\u4e0d\u4ec5\u4ec5\u9700\u8981Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u63d0\u4f9b\u7684\u8fd9\u4e9b\u7279\u6027\uff0c\u540c\u65f6\u4e5f\u9700\u8981\u4e0e\u955c\u50cf\u683c\u5f0f\u3001\u955c\u50cf\u7ba1\u7406\u548c\u5171\u4eab\u955c\u50cf\u76f8\u5173\u7684API\u63a5\u53e3\u548c\u7279\u6027\uff0c\u800c\u8fd9\u4e9b\u7279\u6027\u4e00\u822c\u7531High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u63d0\u4f9b\u3002\u5c31\u65e5\u5e38\u4f7f\u7528\u6765\u8bf4\uff0cLow-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u63d0\u4f9b\u7684\u8fd9\u4e9b\u7279\u6027\u53ef\u80fd\u6ee1\u8db3\u4e0d\u4e86\u65e5\u5e38\u6240\u9700\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u7f18\u6545\uff0c\u552f\u4e00\u4f1a\u4f7f\u7528Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u4eba\u662f\u90a3\u4e9b\u5b9e\u73b0High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u4ee5\u53ca\u5bb9\u5668\u5de5\u5177\u7684\u5f00\u53d1\u4eba\u5458\u3002\u90a3\u4e9b\u5b9e\u73b0Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u5f00\u53d1\u8005\u4f1a\u8bf4High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u6bd4\u5982containerd\u548ccri-o\u4e0d\u50cf\u771f\u6b63\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u56e0\u4e3a\u4ece\u4ed6\u4eec\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u4ed6\u4eec\u5c06\u5bb9\u5668\u8fd0\u884c\u7684\u5b9e\u73b0\u5916\u5305\u7ed9\u4e86runc\u3002\u4f46\u662f\u4ece\u7528\u6237\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5b83\u4eec\u53ea\u662f\u63d0\u4f9b\u5bb9\u5668\u529f\u80fd\u7684\u5355\u4e2a\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u88ab\u53e6\u4e00\u4e2a\u7684\u5b9e\u73b0\u66ff\u6362
\n\u5173\u4e8eLow-Level\u548cHigh-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u8be6\u7ec6\u4ecb\u7ecd\u8bf7\u770b3.2\u5c0f\u8282<\/p>\n
3.2\u3001Low-Level\u548cHigh-Level\u5bb9\u5668\u8fd0\u884c\u65f6<\/h2>\n
\u5f53\u4eba\u4eec\u60f3\u5230\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u53ef\u80fd\u4f1a\u60f3\u5230\u4e00\u7cfb\u5217\u793a\u4f8b\uff1brunc\u3001lxc\u3001lmctfy\u3001Docker\uff08\u5bb9\u5668\uff09\u3001rkt\u3001cri-o\u3002\u8fd9\u4e9b\u4e2d\u7684\u6bcf\u4e00\u4e2a\u90fd\u662f\u4e3a\u4e0d\u540c\u7684\u60c5\u51b5\u800c\u6784\u5efa\u7684\uff0c\u5e76\u5b9e\u73b0\u4e86\u4e0d\u540c\u7684\u529f\u80fd\u3002\u6709\u4e9b\uff0c\u5982 containerd \u548c cri-o\uff0c\u5b9e\u9645\u4e0a\u4f7f\u7528 runc \u6765\u8fd0\u884c\u5bb9\u5668\uff0c\u5728High-Level\u5b9e\u73b0\u955c\u50cf\u7ba1\u7406\u548c API\u3002\u4e0e runc \u7684Low-Level\u5b9e\u73b0\u76f8\u6bd4\uff0c\u53ef\u4ee5\u5c06\u8fd9\u4e9b\u529f\u80fd\uff08\u5305\u62ec\u955c\u50cf\u4f20\u8f93\u3001\u955c\u50cf\u7ba1\u7406\u3001\u955c\u50cf\u89e3\u5305\u548c API\uff09\u89c6\u4e3aHigh-Level\u529f\u80fd\u3002\u8003\u8651\u5230\u8fd9\u4e00\u70b9\uff0c\u60a8\u53ef\u4ee5\u770b\u5230\u5bb9\u5668\u8fd0\u884c\u65f6\u7a7a\u95f4\u76f8\u5f53\u590d\u6742\u3002\u6bcf\u4e2a\u8fd0\u884c\u65f6\u90fd\u6db5\u76d6\u4e86\u8fd9\u4e2aLow-Level\u5230High-Level\u9891\u8c31\u7684\u4e0d\u540c\u90e8\u5206\u3002\u8fd9\u662f\u4e00\u4e2a\u975e\u5e38\u4e3b\u89c2\u7684\u56fe\u8868\uff1a<\/p>\n
<\/div><\/p>\n\u56e0\u6b64\uff0c\u4ece\u5b9e\u9645\u51fa\u53d1\uff0c\u901a\u5e38\u53ea\u4e13\u6ce8\u4e8e\u6b63\u5728\u8fd0\u884c\u7684\u5bb9\u5668\u7684runtime\u901a\u5e38\u79f0\u4e3a\u201cLow-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\uff0c\u652f\u6301\u66f4\u591a\u9ad8\u7ea7\u529f\u80fd\uff08\u5982\u955c\u50cf\u7ba1\u7406\u548cgRPC \/ Web API\uff09\u7684\u8fd0\u884c\u65f6\u901a\u5e38\u79f0\u4e3a\u201cHigh-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\uff0c\u201cHigh-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\u6216\u901a\u5e38\u4ec5\u79f0\u4e3a\u201c\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\uff0c\u6211\u5c06\u5b83\u4eec\u79f0\u4e3a\u201cHigh-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\u3002\u503c\u5f97\u6ce8\u610f\u7684\u662f\uff0cLow-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u548cHigh-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u662f\u89e3\u51b3\u4e0d\u540c\u95ee\u9898\u7684\u3001\u4ece\u6839\u672c\u4e0a\u4e0d\u540c\u7684\u4e8b\u7269\u3002<\/p>\n
\n- Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\uff1a\u5bb9\u5668\u662f\u901a\u8fc7Linux nanespace\u548cCgroups\u5b9e\u73b0\u7684\uff0cNamespace\u80fd\u8ba9\u4f60\u4e3a\u6bcf\u4e2a\u5bb9\u5668\u63d0\u4f9b\u865a\u62df\u5316\u7cfb\u7edf\u8d44\u6e90\uff0c\u50cf\u662f\u6587\u4ef6\u7cfb\u7edf\u548c\u7f51\u7edc\uff0cCgroups\u63d0\u4f9b\u4e86\u9650\u5236\u6bcf\u4e2a\u5bb9\u5668\u6240\u80fd\u4f7f\u7528\u7684\u8d44\u6e90\u7684\u5982\u5185\u5b58\u548cCPU\u4f7f\u7528\u91cf\u7684\u65b9\u6cd5\u3002\u5728\u6700\u4f4e\u7ea7\u522b\u7684\u8fd0\u884c\u65f6\u4e2d\uff0c\u5bb9\u5668\u8fd0\u884c\u65f6\u8d1f\u8d23\u4e3a\u5bb9\u5668\u5efa\u7acbnamespaces\u548ccgroups,\u7136\u540e\u5728\u5176\u4e2d\u8fd0\u884c\u547d\u4ee4\uff0cLow-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u652f\u6301\u5728\u5bb9\u5668\u4e2d\u4f7f\u7528\u8fd9\u4e9b\u64cd\u4f5c\u7cfb\u7edf\u7279\u6027\u3002\u76ee\u524d\u6765\u770b\u4f4e\u7ea7\u5bb9\u5668\u8fd0\u884c\u65f6\u6709\uff1arunc \uff1a\u6211\u4eec\u6700\u719f\u6089\u4e5f\u662f\u88ab\u5e7f\u6cdb\u4f7f\u7528\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u4ee3\u8868\u5b9e\u73b0Docker\u3002runv\uff1arunV \u662f\u4e00\u4e2a\u57fa\u4e8e\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\uff08OCI\uff09\u7684\u8fd0\u884c\u65f6\u3002\u5b83\u901a\u8fc7\u865a\u62df\u5316 guest kernel\uff0c\u5c06\u5bb9\u5668\u548c\u4e3b\u673a\u9694\u79bb\u5f00\u6765\uff0c\u4f7f\u5f97\u5176\u8fb9\u754c\u66f4\u52a0\u6e05\u6670\uff0c\u8fd9\u79cd\u65b9\u5f0f\u5f88\u5bb9\u6613\u5c31\u80fd\u5e2e\u52a9\u52a0\u5f3a\u4e3b\u673a\u548c\u5bb9\u5668\u7684\u5b89\u5168\u6027\u3002\u4ee3\u8868\u5b9e\u73b0\u662fkata\u548cFirecracker\u3002runsc\uff1arunsc = runc + safety \uff0c\u5178\u578b\u5b9e\u73b0\u5c31\u662f\u8c37\u6b4c\u7684gvisor\uff0c\u901a\u8fc7\u62e6\u622a\u5e94\u7528\u7a0b\u5e8f\u7684\u6240\u6709\u7cfb\u7edf\u8c03\u7528\uff0c\u63d0\u4f9b\u5b89\u5168\u9694\u79bb\u7684\u8f7b\u91cf\u7ea7\u5bb9\u5668\u8fd0\u884c\u65f6\u6c99\u7bb1\u3002\u622a\u6b62\u76ee\u524d\uff0c\u8c8c\u4f3c\u5e76\u4e0d\u6ca1\u6709\u751f\u4ea7\u73af\u5883\u4f7f\u7528\u6848\u4f8b\u3002wasm : Wasm\u7684\u6c99\u7bb1\u673a\u5236\u5e26\u6765\u7684\u9694\u79bb\u6027\u548c\u5b89\u5168\u6027\uff0c\u90fd\u6bd4Docker\u505a\u7684\u66f4\u597d\u3002\u4f46\u662fwasm \u5bb9\u5668\u5904\u4e8e\u8349\u6848\u9636\u6bb5\uff0c\u8ddd\u79bb\u751f\u4ea7\u73af\u5883\u5c1a\u6709\u5f88\u957f\u7684\u4e00\u6bb5\u8def\u3002<\/li>\n
- High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\uff1a\u901a\u5e38\u60c5\u51b5\u4e0b\uff0c\u5f00\u53d1\u4eba\u5458\u60f3\u8981\u8fd0\u884c\u4e00\u4e2a\u5bb9\u5668\u4e0d\u4ec5\u4ec5\u9700\u8981Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u63d0\u4f9b\u7684\u8fd9\u4e9b\u7279\u6027\uff0c\u540c\u65f6\u4e5f\u9700\u8981\u4e0e\u955c\u50cf\u683c\u5f0f\u3001\u955c\u50cf\u7ba1\u7406\u548c\u5171\u4eab\u955c\u50cf\u76f8\u5173\u7684API\u63a5\u53e3\u548c\u7279\u6027\uff0c\u800c\u8fd9\u4e9b\u7279\u6027\u4e00\u822c\u7531High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u63d0\u4f9b\u3002\u5c31\u65e5\u5e38\u4f7f\u7528\u6765\u8bf4\uff0cLow-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u63d0\u4f9b\u7684\u8fd9\u4e9b\u7279\u6027\u53ef\u80fd\u6ee1\u8db3\u4e0d\u4e86\u65e5\u5e38\u6240\u9700\uff0c\u56e0\u4e3a\u8fd9\u4e2a\u7f18\u6545\uff0c\u552f\u4e00\u4f1a\u4f7f\u7528Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u4eba\u662f\u90a3\u4e9b\u5b9e\u73b0High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u4ee5\u53ca\u5bb9\u5668\u5de5\u5177\u7684\u5f00\u53d1\u4eba\u5458\u3002\u90a3\u4e9b\u5b9e\u73b0Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u7684\u5f00\u53d1\u8005\u4f1a\u8bf4High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u6bd4\u5982containerd\u548ccri-o\u4e0d\u50cf\u771f\u6b63\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u56e0\u4e3a\u4ece\u4ed6\u4eec\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u4ed6\u4eec\u5c06\u5bb9\u5668\u8fd0\u884c\u7684\u5b9e\u73b0\u5916\u5305\u7ed9\u4e86runc\u3002\u4f46\u662f\u4ece\u7528\u6237\u7684\u89d2\u5ea6\u6765\u770b\uff0c\u5b83\u4eec\u53ea\u662f\u63d0\u4f9b\u5bb9\u5668\u529f\u80fd\u7684\u5355\u4e2a\u7ec4\u4ef6\uff0c\u53ef\u4ee5\u88ab\u53e6\u4e00\u4e2a\u7684\u5b9e\u73b0\u66ff\u6362\uff0c\u56e0\u6b64\u4ece\u8fd9\u4e2a\u89d2\u5ea6\u5c06\u5176\u79f0\u4e3aruntime\u4ecd\u7136\u662f\u6709\u610f\u4e49\u7684\u3002\u5373\u4f7fcontainerd\u548ccri-o\u90fd\u4f7f\u7528runc\uff0c\u4f46\u662f\u5b83\u4eec\u662f\u622a\u7136\u4e0d\u540c\u7684\u9879\u76ee\uff0c\u652f\u6301\u7684\u7279\u6027\u4e5f\u662f\u975e\u5e38\u4e0d\u540c\u7684\u3002dockershim, containerd \u548ccri-o\u90fd\u662f\u9075\u5faaCRI\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u6211\u4eec\u79f0\u4ed6\u4eec\u4e3a\u9ad8\u5c42\u7ea7\u8fd0\u884c\u65f6\uff08High-level Runtime\uff09\u3002<\/li>\n<\/ul>\n
Kubernetes \u53ea\u9700\u652f\u6301 containerd \u7b49high-level container runtime\u5373\u53ef\u3002\u7531containerd \u6309\u7167OCI \u89c4\u8303\u53bb\u5bf9\u63a5\u4e0d\u540c\u7684low-level container runtime\uff0c\u6bd4\u5982\u901a\u7528\u7684runc\uff0c\u5b89\u5168\u589e\u5f3a\u7684gvisor\uff0c\u9694\u79bb\u6027\u66f4\u597d\u7684runv\u3002<\/p>\n
3.3 Low-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u4e4bRunc<\/h2>\n
RunC \u662f\u4ece Docker \u7684 libcontainer \u4e2d\u8fc1\u79fb\u800c\u6765\u7684\uff0c\u5b9e\u73b0\u4e86\u5bb9\u5668\u542f\u505c\u3001\u8d44\u6e90\u9694\u79bb\u7b49\u529f\u80fd\u3002Docker\u5c06RunC\u6350\u8d60\u7ed9 OCI \u4f5c\u4e3aOCI \u5bb9\u5668\u8fd0\u884c\u65f6\u6807\u51c6\u7684\u53c2\u8003\u5b9e\u73b0\u3002Docker \u9ed8\u8ba4\u63d0\u4f9b\u4e86 docker-runc \u5b9e\u73b0\u3002\u4e8b\u5b9e\u4e0a\uff0c\u901a\u8fc7 containerd \u7684\u5c01\u88c5\uff0c\u53ef\u4ee5\u5728 Docker Daemon \u542f\u52a8\u7684\u65f6\u5019\u6307\u5b9a RunC\u7684\u5b9e\u73b0\u3002\u6700\u521d\uff0c\u4eba\u4eec\u5bf9 Docker \u5bf9 OCI \u7684\u8d21\u732e\u611f\u5230\u56f0\u60d1\u3002\u4ed6\u4eec\u8d21\u732e\u7684\u662f\u4e00\u79cd\u201c\u8fd0\u884c\u201d\u5bb9\u5668\u7684\u6807\u51c6\u65b9\u5f0f\uff0c\u4ec5\u6b64\u800c\u5df2\u3002\u5b83\u4eec\u4e0d\u5305\u62ec\u955c\u50cf\u683c\u5f0f\u6216\u6ce8\u518c\u8868\u63a8\/\u62c9\u683c\u5f0f\u3002\u5f53\u4f60\u8fd0\u884c\u4e00\u4e2a Docker \u5bb9\u5668\u65f6\uff0c\u8fd9\u4e9b\u662f Docker \u5b9e\u9645\u7ecf\u5386\u7684\u6b65\u9aa4\uff1a<\/p>\n
\n- \u4e0b\u8f7d\u955c\u50cf<\/li>\n
- \u5c06\u955c\u50cf\u6587\u4ef6\u89e3\u5f00\u4e3abundle\u6587\u4ef6\uff0c\u5c06\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf\u62c6\u5206\u6210\u591a\u5c42<\/li>\n
- \u4ecebundle\u6587\u4ef6\u8fd0\u884c\u5bb9\u5668<\/li>\n<\/ul>\n
Docker\u6807\u51c6\u5316\u7684\u4ec5\u4ec5\u662f\u7b2c\u4e09\u6b65\u3002\u5728\u6b64\u4e4b\u524d\uff0c\u6bcf\u4e2a\u4eba\u90fd\u8ba4\u4e3a\u5bb9\u5668\u8fd0\u884c\u65f6\u652f\u6301Docker\u652f\u6301\u7684\u6240\u6709\u529f\u80fd\u3002\u6700\u7ec8\uff0cDocker\u65b9\u9762\u6f84\u6e05\uff1a\u539f\u59cbOCI\u89c4\u8303\u6307\u51fa\uff0c\u53ea\u6709\u201c\u8fd0\u884c\u5bb9\u5668\u201d\u7684\u90e8\u5206\u7ec4\u6210\u4e86runtime\u3002\u8fd9\u79cd\u201c\u6982\u5ff5\u5931\u8054\u201d\u4e00\u76f4\u6301\u7eed\u5230\u4eca\u5929\uff0c\u5e76\u4f7f\u201c\u5bb9\u5668\u8fd0\u884c\u65f6\u201d\u6210\u4e3a\u4e00\u4e2a\u4ee4\u4eba\u56f0\u60d1\u7684\u8bdd\u9898\u3002\u5e0c\u671b\u6211\u80fd\u8bc1\u660e\u53cc\u65b9\u90fd\u4e0d\u662f\u5b8c\u5168\u9519\u8bef\u7684\uff0c\u5e76\u4e14\u5728\u672c\u6587\u4e2d\u5c06\u5e7f\u6cdb\u4f7f\u7528\u8be5\u672f\u8bed\u3002RunC \u5c31\u53ef\u4ee5\u6309\u7167\u8fd9\u4e2a OCI \u6587\u6863\u6765\u521b\u5efa\u4e00\u4e2a\u7b26\u5408\u89c4\u8303\u7684\u5bb9\u5668\uff0c\u65e2\u7136\u662f\u6807\u51c6\u80af\u5b9a\u5c31\u6709\u5176\u4ed6 OCI \u5b9e\u73b0\uff0c\u6bd4\u5982 Kata\u3001gVisor \u8fd9\u4e9b\u5bb9\u5668\u8fd0\u884c\u65f6\u90fd\u662f\u7b26\u5408 OCI \u6807\u51c6\u7684\u3002<\/p>\n
\u600e\u4e48\u4f7f\u7528 runc<\/strong><\/p>\n create the bundle\n$ mkdir -p \/mycontainer\/rootfs\n\n# [ab]use Docker to copy a root fs into the bundle\n$ docker export $(docker create busybox) | tar -C \/mycontainer\/rootfs -xvf -\n\n# create the specification, by default sh will be the entrypoint of the container\n$ cd \/mycontainer\n$ runc spec\n\n# launch the container\n$ sudo -i\n$ cd \/mycontainer\n$ runc run mycontainerid\n\n# list containers\n$ runc list\n\n# stop the container\n$ runc kill mycontainerid\n\n# cleanup\n$ runc delete mycontainerid<\/code><\/pre>\n\u5728\u547d\u4ee4\u884c\u4e2d\u4f7f\u7528 runc\uff0c\u6211\u4eec\u53ef\u4ee5\u6839\u636e\u9700\u8981\u542f\u52a8\u4efb\u610f\u6570\u91cf\u7684\u5bb9\u5668\u3002\u4f46\u662f\uff0c\u5982\u679c\u6211\u4eec\u60f3\u81ea\u52a8\u5316\u8fd9\u4e2a\u8fc7\u7a0b\uff0c\u6211\u4eec\u9700\u8981\u4e00\u4e2a\u5bb9\u5668\u7ba1\u7406\u5668\u3002\u4e3a\u4ec0\u4e48\u8fd9\u6837\uff1f\u60f3\u8c61\u4e00\u4e0b\uff0c\u6211\u4eec\u9700\u8981\u542f\u52a8\u6570\u5341\u4e2a\u5bb9\u5668\u6765\u8ddf\u8e2a\u5b83\u4eec\u7684\u72b6\u6001\u3002\u5176\u4e2d\u4e00\u4e9b\u9700\u8981\u5728\u5931\u8d25\u65f6\u91cd\u65b0\u542f\u52a8\uff0c\u9700\u8981\u5728\u7ec8\u6b62\u65f6\u91ca\u653e\u8d44\u6e90\uff0c\u5fc5\u987b\u4ece\u6ce8\u518c\u8868\u4e2d\u63d0\u53d6\u56fe\u50cf\uff0c\u9700\u8981\u914d\u7f6e\u5bb9\u5668\u95f4\u7f51\u7edc\u7b49\u7b49\u3002\u5c31\u9700\u8981\u6709Low-Level\u548cHigh-Level\u5bb9\u5668\u8fd0\u884c\u65f6\uff0crunc\u5c31\u662fLow-Level\u5b9e\u73b0\u7684\u5b9e\u73b0\u3002<\/p>\n
3.3 High-Level\u5bb9\u5668\u8fd0\u884c\u65f6\u4e4bcontainred<\/h2>\n
\u5f53\u6211\u4eec\u5b89\u88c5\u597dcontainerd\u4e4b\u540e\uff0c\u4f1a\u6709\u4e00\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0bcontainerd\uff0c\u4ed6\u6240\u4f7f\u7528\u7684\u914d\u7f6e\u6587\u4ef6\u662f\/etc\/containerd\/config.toml\u3002\u8fd9\u4e2a\u670d\u52a1\u5668\u8fdb\u7a0b\u4f1a\u751f\u6210\u4e00\u4e2a\u63a5\u53e3\u5e76\u5ba2\u6237\u7aef\u6765\u8fde\u63a5\uff08\u901a\u8fc7gRPC\u534f\u8bae\uff09\uff0c\u8fd9\u4e2a\u63a5\u53e3\u5c31\u662f\/var\/run\/containerd\/containerd.sock\u3002<\/p>\n
\u56e0\u4e3a\u5728\u64cd\u4f5c\u7cfb\u7edf\u91cc\u76ee\u5f55\/var\/run\u662f\/run\u7684\u8f6f\u8fde\u63a5(\u5feb\u6377\u65b9\u5f0f)\uff0c\u6240\u4ee5\/run\/containerd\/containerd.sock\u548c\/var\/run\/containerd\/containerd.sock\u662f\u540c\u4e00\u4e2a\u6587\u4ef6\u3002
\n
<\/div><\/p>\n[kubernetes1.20]()\u7684kubelet\u5c31\u662f\u901a\u8fc7gRPC\u534f\u8bae\u8fde\u63a5\/var\/run\/containerd\/containerd.sock\uff0c\u662f\u5b83\u7684\u4e00\u4e2a\u5ba2\u6237\u7aef\u3002<\/p>\n
\u4e0eRunC\u4e00\u6837<\/em>\uff0c\u6211\u4eec\u53c8\u53ef\u4ee5\u5728\u8fd9\u91cc\u770b\u5230\u4e00\u4e2adocker\u516c\u53f8\u7684\u5f00\u6e90\u4ea7\u54c1containerd\u66fe\u7ecf\u662f\u5f00\u6e90docker\u9879\u76ee\u7684\u4e00\u90e8\u5206\u3002\u5c3d\u7ba1_containerd_\u662f\u53e6\u4e00\u4e2a\u81ea\u7ed9\u81ea\u8db3\u7684\u8f6f\u4ef6\u3002<\/p>\n\n- \u4e00\u65b9\u9762\uff0c\u5b83\u79f0\u81ea\u5df1\u4e3a\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u4f46\u662f\u4e0e\u8fd0\u884c\u65f6__RunC\u4e0d\u540c<\/em>\u3002\u4e0d\u4ec5_containerd_\u548c_runc_\u7684\u804c\u8d23\u4e0d\u540c\uff0c\u7ec4\u7ec7\u5f62\u5f0f\u4e5f\u4e0d\u540c\u3002\u663e\u7136_runc_\u662f\u53ea\u662f\u4e00\u4e2a\u547d\u4ee4\u884c\u5de5\u5177\uff0c_containerd_\u662f\u4e00\u4e2a\u957f\u671f\u5c45\u4f4f\u5b88\u62a4\u8fdb\u7a0b\u3002_runc_\u7684\u5b9e\u4f8b\u4e0d\u80fd\u8d85\u8fc7\u5e95\u5c42\u5bb9\u5668\u8fdb\u7a0b\u3002\u901a\u5e38\u5b83\u5728create\u8c03\u7528\u65f6\u5f00\u59cb\u5b83\u7684\u751f\u547d\uff0c\u7136\u540e\u53ea\u662f\u5728\u5bb9\u5668\u7684 rootfs \u4e2d\u7684\u6307\u5b9a\u6587\u4ef6\u53bb\u8fd0\u884c\u3002<\/li>\n
- \u53e6\u4e00\u65b9\u9762\uff0c_containerd _\u53ef\u4ee5\u7ba1\u7406\u8d85\u8fc7\u6570\u5343\u4e2a_runc_\u5bb9\u5668\u3002\u5b83\u66f4\u50cf\u662f\u4e00\u4e2a\u670d\u52a1\u5668\uff0c\u5b83\u4fa6\u542c\u4f20\u5165\u8bf7\u6c42\u4ee5\u542f\u52a8\u3001\u505c\u6b62\u6216\u62a5\u544a\u5bb9\u5668\u7684\u72b6\u6001\u3002\u5728\u5f15\u64ce\u76d6\u4e0b_containerd_\u4f7f\u7528RunC\u3002\u7136\u800c\uff0c_containerd_\u4e0d\u4ec5\u4ec5\u662f\u4e00\u4e2a\u5bb9\u5668\u751f\u547d\u5468\u671f\u7ba1\u7406\u5668\u3002\u5b83\u8fd8\u8d1f\u8d23\u955c\u50cf\u7ba1\u7406\uff08\u4ece\u6ce8\u518c\u4e2d\u5fc3\u62c9\u53d6\u548c\u63a8\u9001\u955c\u50cf\uff0c\u5728\u672c\u5730\u5b58\u50a8\u955c\u50cf\u7b49\uff09\u3001\u8de8\u5bb9\u5668\u7f51\u7edc\u7ba1\u7406\u548c\u5176\u4ed6\u4e00\u4e9b\u529f\u80fd\u3002<\/li>\n<\/ul>\n<\/div><\/p>\n
containerd \u662f\u4e00\u4e2a\u5de5\u4e1a\u7ea7\u6807\u51c6\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u5b83\u5f3a\u8c03\u7b80\u5355\u6027<\/strong>\u3001\u5065\u58ee\u6027<\/strong>\u548c\u53ef\u79fb\u690d\u6027<\/strong>\uff0ccontainerd \u53ef\u4ee5\u8d1f\u8d23\u5e72\u4e0b\u9762\u8fd9\u4e9b\u4e8b\u60c5\uff1a<\/p>\n\n- \u7ba1\u7406\u5bb9\u5668\u7684\u751f\u547d\u5468\u671f\uff08\u4ece\u521b\u5efa\u5bb9\u5668\u5230\u9500\u6bc1\u5bb9\u5668\uff09<\/li>\n
- \u62c9\u53d6\/\u63a8\u9001\u5bb9\u5668\u955c\u50cf<\/li>\n
- \u5b58\u50a8\u7ba1\u7406\uff08\u7ba1\u7406\u955c\u50cf\u53ca\u5bb9\u5668\u6570\u636e\u7684\u5b58\u50a8\uff09<\/li>\n
- \u8c03\u7528 runc \u8fd0\u884c\u5bb9\u5668\uff08\u4e0e runc \u7b49\u5bb9\u5668\u8fd0\u884c\u65f6\u4ea4\u4e92\uff09<\/li>\n
- \u7ba1\u7406\u5bb9\u5668\u7f51\u7edc\u63a5\u53e3\u53ca\u7f51\u7edc<\/li>\n<\/ul>\n<\/div><\/p>\n
\u4e0a\u56fe\u662f Containerd \u6574\u4f53\u7684\u67b6\u6784\u3002\u7531\u4e0b\u5f80\u4e0a\uff0cContainerd\u652f\u6301\u7684\u64cd\u4f5c\u7cfb\u7edf\u548c\u67b6\u6784\u6709 Linux\u3001Windows \u4ee5\u53ca\u50cf ARM \u7684\u4e00\u4e9b\u5e73\u53f0\u3002\u5728\u8fd9\u4e9b\u5e95\u5c42\u7684\u64cd\u4f5c\u7cfb\u7edf\u4e4b\u4e0a\u8fd0\u884c\u7684\u5c31\u662f\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u5176\u4e2d\u6709\u4e0a\u6587\u63d0\u5230\u7684runc\u3001gVisor \u7b49\u3002\u5728\u5e95\u5c42\u5bb9\u5668\u8fd0\u884c\u65f6\u4e4b\u4e0a\u7684\u662fContainerd \u76f8\u5173\u7684\u7ec4\u4ef6\uff0c\u6bd4\u5982 Containerd \u7684 runtime\u3001core\u3001API\u3001backend\u3001store \u8fd8\u6709metadata \u7b49\u7b49\u3002\u6784\u7b51\u5728 Containerd \u7ec4\u4ef6\u4e4b\u4e0a\u4ee5\u53ca\u8ddf\u8fd9\u4e9b\u7ec4\u4ef6\u505a\u4ea4\u4e92\u7684\u90fd\u662f Containerd \u7684 client\uff0cKubernetes \u8ddf Containerd \u901a\u8fc7 CRI \u505a\u4ea4\u4e92\u65f6\uff0c\u672c\u8eab\u4e5f\u4f5c\u4e3a Containerd \u7684\u4e00\u4e2a client\u3002Containerd \u672c\u8eab\u6709\u63d0\u4f9b\u4e86\u4e00\u4e2a CRI\uff0c\u53eb ctr\uff0c\u4e0d\u8fc7\u8fd9\u4e2a\u547d\u4ee4\u884c\u5de5\u5177\u5e76\u4e0d\u662f\u5f88\u597d\u7528\u3002<\/p>\n
\u5728\u8fd9\u4e9b\u7ec4\u4ef6\u4e4b\u4e0a\u5c31\u662f\u771f\u6b63\u7684\u5e73\u53f0\uff0cGoogle Cloud\u3001Docker\u3001IBM\u3001\u963f\u91cc\u4e91\u3001\u5fae\u8f6f\u4e91\u8fd8\u6709RANCHER\u7b49\u7b49\u90fd\u662f\uff0c\u8fd9\u4e9b\u5e73\u53f0\u76ee\u524d\u90fd\u5df2\u7ecf\u652f\u6301 containerd\uff0c \u5e76\u4e14\u6709\u4e9b\u5df2\u7ecf\u4f5c\u4e3a\u81ea\u5df1\u7684\u9ed8\u8ba4\u5bb9\u5668\u8fd0\u884c\u65f6\u4e86\u3002<\/p>\n
\u4ece k8s \u7684\u89d2\u5ea6\u770b\uff0c\u9009\u62e9 containerd\u4f5c\u4e3a\u8fd0\u884c\u65f6\u7684\u7ec4\u4ef6\uff0c\u5b83\u8c03\u7528\u94fe\u66f4\u77ed\uff0c\u7ec4\u4ef6\u66f4\u5c11\uff0c\u66f4\u7a33\u5b9a\uff0c\u5360\u7528\u8282\u70b9\u8d44\u6e90\u66f4\u5c11\u3002<\/p>\n
\u7b2c\u4e00\u6761\u94fe\u63a5\u662fk8s1.20\u4ee5\u524d\u7684<\/p>\n
\u7b2c\u4e8c\u6761\u94fe\u8def\u662fk8s1.20\u4ee5\u540e\u7684<\/p>\n
\u8fd9\u5c31\u662f\u6211\u4eec\u6240\u8bf4\u7684k8s\u629b\u5f03docker\u7684\u539f\u56e0<\/p>\n
<\/div><\/p>\n\u8c03\u7528\u94fe<\/p>\n
\n- 1\u3001Docker \u4f5c\u4e3a k8s \u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u8c03\u7528\u5173\u7cfb\u5982\u4e0b\uff1a
\nkubelet –> docker shim \uff08\u5728 kubelet \u8fdb\u7a0b\u4e2d\uff09 –> dockerd –> containerd<\/li>\n - 2\u3001Containerd \u4f5c\u4e3a k8s \u5bb9\u5668\u8fd0\u884c\u65f6\uff0c\u8c03\u7528\u5173\u7cfb\u5982\u4e0b\uff1a
\nkubelet –> cri plugin\uff08\u5728 containerd \u8fdb\u7a0b\u4e2d\uff09 –> containerd<\/li>\n<\/ul>\n3.4 \u6269\u5c55\u9605\u8bfb\uff1ak8s\u4e3a\u4f55\u629b\u5f03docker<\/h2>\n
\u539f\u56e0\u5982\u4e0b\uff1a
\ndocker\u6bd4k8s\u53d1\u5e03\u7684\u65e9\uff1b
\nDocker \u672c\u8eab\u4e0d\u517c\u5bb9 CRI \u63a5\u53e3\uff0c\u5b98\u65b9\u5e76\u6ca1\u6709\u5b9e\u73b0 CRI \u7684\u6253\u7b97\uff0c\u540c\u65f6\u4e5f\u4e0d\u652f\u6301\u5bb9\u5668\u7684\u4e00\u4e9b\u65b0\u9700\u6c42\uff0c\u793e\u533a\u60f3\u8981\u6446\u8131Dockershim\u7684\u9ad8\u7ef4\u62a4\u6210\u672c\uff0c\u3002
\nk8s\u4e0d\u80fd\u76f4\u63a5\u4e0edocker\u901a\u4fe1\uff0c\u53ea\u80fd\u4e0e CRI \u8fd0\u884c\u65f6\u901a\u4fe1\uff0c\u8981\u4e0e Docker \u901a\u4fe1\uff0c\u5c31\u5fc5\u987b\u4f7f\u7528\u6865\u63a5\u670d\u52a1(dockershim)\uff0ck8s\u8981\u4e0edocker\u901a\u4fe1\u662f\u901a\u8fc7\u8282\u70b9\u4ee3\u7406Kubelet\u7684Dockershim\uff08k8s\u793e\u533a\u7ef4\u62a4\u7684\uff09\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u7ba1\u7406\u5bb9\u5668\u7684 Docker \u670d\u52a1\u3002
\nDockershim \u4e00\u76f4\u90fd\u662f Kubernetes \u4e3a\u4e86\u517c\u5bb9 Docker \u83b7\u5f97\u5e02\u573a\u91c7\u53d6\u7684\u4e34\u65f6\u65b9\u6848\uff08\u51b3\u5b9a\uff09\u3002
\nk8s\u5728\u8fc7\u53bb\u56e0\u4e3a Docker \u7684\u70ed\u95e8\u800c\u9009\u62e9\u5b83\uff0c\u73b0\u5728\u53c8\u56e0\u4e3a\u9ad8\u6602\u7684\u7ef4\u62a4\u6210\u672c\u800c\u653e\u5f03\u5b83\uff0c\u6211\u4eec\u80fd\u591f\u4ece\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\u4f53\u4f1a\u5230\u5bb9\u5668\u9886\u57df\u7684\u53d1\u5c55\u548c\u8fdb\u6b65\u3002
\n\u5bf9\u4e8e\u5df2\u7ecf\u7edf\u6cbb\u5e02\u573a\u7684k8s\u6765\u8bf4\uff0cDocker \u7684\u652f\u6301\u663e\u5f97\u975e\u5e38\u9e21\u808b\uff0c\u79fb\u9664\u4ee3\u7801\u4e5f\u5c31\u987a\u7406\u6210\u7ae0\u3002
\n\u5728\u96c6\u7fa4\u4e2d\u8fd0\u884c\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u5f80\u5f80\u4e0d\u9700\u8981docker\u8fd9\u4e48\u590d\u6742\u7684\u529f\u80fd\uff0ck8s\u9700\u8981\u7684\u53ea\u662f CRI \u4e2d\u5b9a\u4e49\u7684\u90a3\u4e9b\u63a5\u53e3\u3002
\n\u4e0d\u7528\u62c5\u5fc3\uff0cMirantis\u516c\u53f8\u672a\u6765\u4f1a\u548cDocker\u5171\u540c\u7ef4\u62a4Dockershim,\u5e76\u4f5c\u4e3a\u4e00\u4e2a\u5f00\u6e90\u7ec4\u4ef6\u63d0\u4f9b\uff1b\u5bf9\u4e8e\u6b63\u5f0f\u751f\u4ea7\u73af\u5883\u8fd8\u662f\u5efa\u8bae\u91c7\u7528\u517c\u5bb9CRI\u7684containerd\u4e4b\u7c7b\u7684\u5e95\u5c42\u8fd0\u884c\u65f6\u3002<\/p>\n
\u4e0b\u9762\u8be6\u7ec6\u804a\u804a\u77e5\u8bc6\u70b9
\nK8s\u51b3\u5b9a\u5728 1.20 \u5f00\u59cb\u653e\u5f03 Docker\uff0c\u5e76\u57281.21\u5b8c\u5168\u629b\u5f03 Docker \u7684\u652f\u6301\u3002<\/p>\n
2020 \u5e74 12 \u6708\uff0cKubernetes \u793e\u533a\u51b3\u5b9a\u7740\u624b\u79fb\u9664\u4ed3\u5e93\u4e2d Dockershim \u76f8\u5173\u4ee3\u7801\uff0c\u5bf9\u4e8ek8s\u548c Docker \u4e24\u4e2a\u793e\u533a\u6765\u8bf4\u90fd\u610f\u4e49\u91cd\u5927\u3002<\/p>\n
<\/div><\/p>\n\u5982\u4e0a\u56fe\u6240\u793a\uff0cKubernetes\u8282\u70b9\u4ee3\u7406 Kubelet\u4e3a\u4e86\u8bbf\u95eeDocker\u63d0\u4f9b\u7684\u670d\u52a1\u9700\u8981\u5148\u7ecf\u8fc7\u793e\u533a\u7ef4\u62a4\u7684 Dockershim\uff0cDockershim \u4f1a\u5c06\u8bf7\u6c42\u8f6c\u53d1\u7ed9\u7ba1\u7406\u5bb9\u5668\u7684 Docker \u670d\u52a1\u3002<\/p>\n
\u53ef\u6269\u5c55\u6027<\/p>\n
Kubernetes \u901a\u8fc7\u5f15\u5165\u65b0\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u63a5\u53e3\u5c06\u5bb9\u5668\u7ba1\u7406\u4e0e\u5177\u4f53\u7684\u8fd0\u884c\u65f6\u89e3\u8026\uff0c\u4e0d\u518d\u4f9d\u8d56\u4e8e\u67d0\u4e2a\u5177\u4f53\u7684\u8fd0\u884c\u65f6\u5b9e\u73b0\u3002
\nKubernetes \u901a\u8fc7\u4e0b\u9762\u7684\u4e00\u7cfb\u5217\u63a5\u53e3\u4e3a\u4e0d\u540c\u6a21\u5757\u63d0\u4f9b\u6269\u5c55\u6027\uff1a<\/p>\n
<\/div><\/p>\nKubernetes \u5728\u8f83\u65e9\u671f\u7684\u7248\u672c\u4e2d\u5c31\u5f15\u5165\u4e86 CRD\u3001CNI\u3001CRI \u548c CSI \u7b49\u63a5\u53e3\uff0c\u53ea\u6709\u7528\u4e8e\u6269\u5c55\u8c03\u5ea6\u5668\u7684\u8c03\u5ea6\u6846\u67b6\u662f Kubernetes \u4e2d\u6bd4\u8f83\u65b0\u7684\u7279\u6027\u3002<\/p>\n
Kubernetes \u65e9\u5728 1.3 \u5c31\u5728\u4ee3\u7801\u4ed3\u5e93\u4e2d\u540c\u65f6\u652f\u6301\u4e86 rkt \u548c Docker \u4e24\u79cd\u8fd0\u884c\u65f6\u3002<\/p>\n
\u4f46\u8fd9\u4e9b\u4ee3\u7801\u4e3a Kubelet \u7ec4\u4ef6\u7684\u7ef4\u62a4\u5e26\u6765\u4e86\u5f88\u5927\u7684\u56f0\u96be\uff0c\u4e0d\u4ec5\u9700\u8981\u7ef4\u62a4\u4e0d\u540c\u7684\u8fd0\u884c\u65f6\uff0c\u63a5\u5165\u65b0\u7684\u8fd0\u884c\u65f6\u4e5f\u5f88\u56f0\u96be\u3002<\/p>\n
\u5bb9\u5668\u8fd0\u884c\u65f6\u63a5\u53e3(Container Runtime Interface\u3001CRI)\u662f Kubernetes \u5728 1.5 \u4e2d\u5f15\u5165\u7684\u65b0\u63a5\u53e3\uff0cKubelet \u53ef\u4ee5\u901a\u8fc7\u8fd9\u4e2a\u65b0\u63a5\u53e3\u4f7f\u7528\u5404\u79cd\u5404\u6837\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u3002<\/p>\n
\u5176\u5b9e CRI \u7684\u53d1\u5e03\u5c31\u610f\u5473\u7740 Kubernetes \u4e00\u5b9a\u4f1a\u5c06 Dockershim \u7684\u4ee3\u7801\u4ece\u4ed3\u5e93\u4e2d\u79fb\u9664\u3002<\/p>\n
CRI \u662f\u4e00\u7cfb\u5217\u7528\u4e8e\u7ba1\u7406\u5bb9\u5668\u8fd0\u884c\u65f6\u548c\u955c\u50cf\u7684 gRPC \u63a5\u53e3\uff0c\u6211\u4eec\u80fd\u5728\u5b83\u7684\u5b9a\u4e49\u4e2d\u627e\u5230 RuntimeService \u548c ImageService \u4e24\u4e2a\u670d\u52a1\u3002<\/p>\n
\u4e0d\u517c\u5bb9\u63a5\u53e3<\/p>\n
\u4e0e\u5bb9\u5668\u8fd0\u884c\u65f6\u76f8\u6bd4\uff0cDocker \u66f4\u50cf\u662f\u4e00\u4e2a\u590d\u6742\u7684\u5f00\u53d1\u8005\u5de5\u5177\uff0c\u5b83\u63d0\u4f9b\u4e86\u4ece\u6784\u5efa\u5230\u8fd0\u884c\u7684\u5168\u5957\u529f\u80fd\u3002<\/p>\n
\u5f00\u53d1\u8005\u53ef\u4ee5\u5f88\u5feb\u5730\u4e0a\u624b Docker \u5e76\u5728\u672c\u5730\u8fd0\u884c\u5e76\u7ba1\u7406\u4e00\u4e9b Docker \u5bb9\u5668\uff0c\u7136\u800c\u5728\u96c6\u7fa4\u4e2d\u8fd0\u884c\u7684\u5bb9\u5668\u8fd0\u884c\u65f6\u5f80\u5f80\u4e0d\u9700\u8981\u8fd9\u4e48\u590d\u6742\u7684\u529f\u80fd\uff0cKubernetes \u9700\u8981\u7684\u53ea\u662f CRI \u4e2d\u5b9a\u4e49\u7684\u90a3\u4e9b\u63a5\u53e3\u3002<\/p>\n
\u867d\u7136 Docker \u4e2d\u5305\u542b CRI \u9700\u8981\u7684\u6240\u6709\u529f\u80fd\uff0c\u4f46\u662f\u90fd\u9700\u8981\u5b9e\u73b0\u4e00\u5c42\u5305\u88c5\u4ee5\u517c\u5bb9 CRI\u3002<\/p>\n
\u793e\u533a\u63d0\u51fa\u7684\u5f88\u591a\u65b0\u529f\u80fd\u90fd\u6ca1\u6709\u529e\u6cd5\u5728 Dockershim \u4e2d\u5b9e\u73b0\uff0c\u4f8b\u5982 cgroups v2 \u4ee5\u53ca\u7528\u6237\u547d\u540d\u7a7a\u95f4\u3002<\/p>\n
Kubernetes \u4f5c\u4e3a\u6bd4\u8f83\u677e\u6563\u7684\u5f00\u6e90\u793e\u533a\uff0c\u6bcf\u4e2a\u6210\u5458\u5c24\u5176\u662f\u5404\u4e2a SIG \u7684\u6210\u5458\u90fd\u53ea\u4f1a\u5728\u5f00\u6e90\u793e\u533a\u4e0a\u82b1\u8d39\u6709\u9650\u7684\u65f6\u95f4\u3002<\/p>\n
\u800c\u7ef4\u62a4 Kubelet \u7684 sig-node \u53c8\u5c24\u5176\u7e41\u5fd9\uff0c\u5f88\u591a\u65b0\u7684\u529f\u80fd\u90fd\u56e0\u4e3a\u7ef4\u62a4\u8005\u6ca1\u6709\u8db3\u591f\u7684\u7cbe\u529b\u800c\u88ab\u6401\u7f6e\u3002<\/p>\n
\u65e2\u7136 Docker \u793e\u533a\u770b\u8d77\u6765\u6ca1\u6709\u6253\u7b97\u652f\u6301 Kubernetes \u7684 CRI \u63a5\u53e3\uff0c\u7ef4\u62a4 Dockershim \u53c8\u9700\u8981\u82b1\u8d39\u5f88\u591a\u7cbe\u529b\uff0c\u5c31\u80fd\u7406\u89e3\u4e3a\u4ec0\u4e48 Kubernetes \u4f1a\u79fb\u9664 Dockershim \u4e86\u3002<\/p>\n
Kubelet \u4e4b\u524d\u4f7f\u7528\u4e00\u4e2a\u540d\u4e3a dockershim \u7684\u6a21\u5757\uff0c\u7528\u4ee5\u5b9e\u73b0\u5bf9 Docker \u7684 CRI \u652f\u6301\u3002\u4f46 Kubernetes \u793e\u533a\u53d1\u73b0\u4e86\u4e0e\u4e4b\u76f8\u5173\u7684\u7ef4\u62a4\u95ee\u9898\uff0c\u5efa\u8bae\u5927\u5bb6\u8003\u8651\u4f7f\u7528\u5305\u542b CRI \u5b8c\u6574\u5b9e\u73b0\uff08\u517c\u5bb9 v1alpha1 \u6216 v1\uff09\u7684\u53ef\u7528\u5bb9\u5668\u8fd0\u884c\u65f6\u3002<\/p>\n
Docker \u5e76\u4e0d\u652f\u6301 CRI\uff08\u5bb9\u5668\u8fd0\u884c\u65f6\u63a5\u53e3\uff09\u8fd9\u4e00 Kubernetes \u8fd0\u884c\u65f6 API\uff0c\u800c Kubernetes \u7528\u6237\u4e00\u76f4\u4ee5\u6765\u6240\u4f7f\u7528\u7684\u5176\u5b9e\u662f\u540d\u4e3a\u201cdockershim\u201d\u7684\u6865\u63a5\u670d\u52a1\u3002Dockershim \u80fd\u591f\u8f6c\u6362 Docker API \u4e0e CRI\u3002<\/p>\n
Docker \u672c\u8eab\u4e5f\u662f\u4e00\u6b3e\u975e\u5e38\u5f3a\u5927\u7684\u5de5\u5177\uff0c\u53ef\u7528\u4e8e\u521b\u5efa\u5f00\u53d1\u73af\u5883\u3002\u4e3a\u4e86\u89e3\u9020\u6210\u5f53\u524d\u72b6\u51b5\u7684\u539f\u56e0\uff0c\u9700\u8981\u5168\u9762\u5206\u6790 Docker \u5728\u73b0\u6709 Kubernetes \u67b6\u6784\u4e2d\u7684\u4f5c\u7528\u3002<\/p>\n
Docker\u516c\u53f8\u628acontainerd\u548crunc\u62c6\u51fa\u6765\u53d8\u6210\u4e86\u5f00\u6e90\u9879\u76ee,docker\u7684\u5e95\u5c42\u662fcontainerd+runc .<\/p>\n
\u63a8\u8350\u9605\u8bfb
\nhttps:\/\/containerd.io\/<\/a>
\nhttps:\/\/cloud.tencent.com\/document\/product\/457\/35747<\/a>
\nhttps:\/\/jiajunhuang.com\/articles\/2018_12_22-docker_components.md.html<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"Docker\u3001Containerd\u3001RunC \u95f4\u7684\u8054\u7cfb\u548c\u533a\u522b \u4e00\u3001OCI\u7684\u7531\u6765 \u5bb9\u5668\u6280\u672f\u8d77\u6e90\u4e8e1979\u5e74\uff0c\u53d1\u5c55 […]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[423,422],"tags":[],"_links":{"self":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7353"}],"collection":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7353"}],"version-history":[{"count":0,"href":"https:\/\/egonlin.com\/index.php?rest_route=\/wp\/v2\/posts\/7353\/revisions"}],"wp:attachment":[{"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7353"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7353"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/egonlin.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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