{"id":61959,"date":"2025-04-29T10:00:53","date_gmt":"2025-04-29T02:00:53","guid":{"rendered":"https:\/\/fwq.ai\/blog\/61959\/"},"modified":"2025-04-29T10:00:53","modified_gmt":"2025-04-29T02:00:53","slug":"linux%e5%92%8cdocker%ef%bc%9a%e5%a6%82%e4%bd%95%e5%ae%9e%e7%8e%b0%e5%ae%b9%e5%99%a8%e7%9a%84%e5%8a%a8%e6%80%81%e8%b0%83%e5%ba%a6%e5%92%8c%e8%b5%84%e6%ba%90%e7%ae%a1%e7%90%86%ef%bc%9f-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/61959\/","title":{"rendered":"Linux\u548cDocker\uff1a\u5982\u4f55\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406\uff1f"},"content":{"rendered":"<p>\u548c: \u5982\u4f55\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406\uff1f<\/p>\n<p>\u6458\u8981\uff1a<br \/>\u968f\u7740\u5bb9\u5668\u6280\u672f\u7684\u8fc5\u901f\u53d1\u5c55\u548c\u5e7f\u6cdb\u5e94\u7528\uff0c\u5982\u4f55\u66f4\u597d\u5730\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406\u6210\u4e3a\u4e86\u4e00\u4e2a\u91cd\u8981\u7684\u8bdd\u9898\u3002\u672c\u6587\u5c06\u91cd\u70b9\u4ecb\u7ecdLinux\u548cDocker\u4e2d\u7684\u4e00\u4e9b\u5e38\u7528\u673a\u5236\u548c\u65b9\u6cd5\uff0c\u4ee5\u53ca\u793a\u4f8b\u4ee3\u7801\uff0c\u5e2e\u52a9\u8bfb\u8005\u66f4\u597d\u5730\u7406\u89e3\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406\u3002<\/p>\n<p>\u5f15\u8a00\uff1a<br \/>\u5bb9\u5668\u6280\u672f\u7684\u5174\u8d77\u4e3a\u5e94\u7528\u7a0b\u5e8f\u7684\u90e8\u7f72\u548c\u8fd0\u884c\u5e26\u6765\u4e86\u9769\u547d\u6027\u7684\u53d8\u5316\u3002\u4f20\u7edf\u7684\u865a\u62df\u5316\u6280\u672f\u9700\u8981\u865a\u62df\u673a\u7ba1\u7406\u7a0b\u5e8f\uff0c\u800c\u5bb9\u5668\u6280\u672f\u5219\u53ef\u4ee5\u76f4\u63a5\u5728\u5bbf\u4e3b\u673a\u4e0a\u8fd0\u884c\u5e94\u7528\u7a0b\u5e8f\uff0c\u4e0d\u9700\u8981\u989d\u5916\u7684\u7ba1\u7406\u7a0b\u5e8f\u3002<\/p>\n<p>\u5bb9\u5668\u6280\u672f\u7684\u6838\u5fc3\u662f\u5bb9\u5668\u5f15\u64ce\uff0c\u5176\u4e2d\u6700\u8457\u540d\u7684\u5c31\u662fDocker\u3002Docker\u63d0\u4f9b\u4e86\u4e00\u79cd\u8f7b\u91cf\u7ea7\u4e14\u6613\u4e8e\u4f7f\u7528\u7684\u5bb9\u5668\u89e3\u51b3\u65b9\u6848\uff0c\u6210\u4e3a\u4e86\u5bb9\u5668\u6280\u672f\u7684\u4ee3\u8868\u3002\u672c\u6587\u5c06\u4ee5Docker\u4e3a\u4f8b\uff0c\u7ed3\u5408Linux\u7cfb\u7edf\u7684\u673a\u5236\uff0c\u4ecb\u7ecd\u5982\u4f55\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406\u3002<\/p>\n<p>\u4e00\u3001Linux\u4e2d\u7684\u5bb9\u5668\u6280\u672f<\/p>\n<p>\u5728Linux\u7cfb\u7edf\u4e2d\uff0c\u5bb9\u5668\u6280\u672f\u4e3b\u8981\u4f9d\u8d56\u4e8e\u4e24\u4e2a\u91cd\u8981\u7684\u529f\u80fd\uff0c\u5373cgroup\u548cnamespace\u3002cgroup\uff08control groups\uff09\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u7cfb\u7edf\u8d44\u6e90\u7684\u9650\u5236\u548c\u7ba1\u7406\uff0c\u800cnamespace\u53ef\u4ee5\u5b9e\u73b0\u5bf9\u8fdb\u7a0b\u548c\u6587\u4ef6\u7cfb\u7edf\u7684\u9694\u79bb\u3002<\/p>\n<ol>\n<li>cgroup<\/li>\n<\/ol>\n<p>cgroup\u662f\u4e00\u79cd\u529f\u80fd\u5f3a\u5927\u7684\u8d44\u6e90\u914d\u7f6e\u548c\u9650\u5236\u673a\u5236\uff0c\u53ef\u4ee5\u4e3a\u4e0d\u540c\u7684\u8fdb\u7a0b\u7ec4\u8bbe\u7f6e\u8d44\u6e90\u9650\u5236\u3002\u901a\u8fc7\u4f7f\u7528cgroup\uff0c\u6211\u4eec\u53ef\u4ee5\u4e3a\u5bb9\u5668\u4e2d\u7684\u8fdb\u7a0b\u548c\u5916\u90e8\u8fdb\u7a0b\u6307\u5b9a\u4e0d\u540c\u7684\u8d44\u6e90\u9650\u5236\uff0c\u5982CPU\u914d\u989d\u3001\u5185\u5b58\u914d\u989d\u7b49\u3002\u5728Linux\u7cfb\u7edf\u4e2d\uff0ccgroup\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u5b9e\u73b0\u5bb9\u5668\u7684\u8d44\u6e90\u7ba1\u7406\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528cgroup\u9650\u5236\u5bb9\u5668\u5185\u8fdb\u7a0bCPU\u4f7f\u7528\u7387\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>#!\/bin\/bash\n\n# \u521b\u5efacgroup\ncgcreate -g cpu:\/docker_container\n\n# \u8bbe\u7f6eCPU\u914d\u989d\u4e3a50%\ncgset -r cpu.cfs_quota_us=50000 \/docker_container\n\n# \u542f\u52a8\u5bb9\u5668\ndocker run -d -it --name=my_container --cgroup-parent=\/docker_container ubuntu \/bin\/bash<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528cgcreate\u547d\u4ee4\u521b\u5efa\u4e86\u4e00\u4e2a\u540d\u4e3adocker_container\u7684cgroup\uff0c\u5e76\u4f7f\u7528cgset\u8bbe\u7f6e\u4e86\u8be5cgroup\u7684CPU\u914d\u989d\u4e3a50%\u3002\u7136\u540e\u6211\u4eec\u4f7f\u7528docker\u547d\u4ee4\u542f\u52a8\u4e86\u4e00\u4e2a\u540d\u4e3amy_container\u7684\u5bb9\u5668\uff0c\u5e76\u5c06\u5176\u5f52\u5c5e\u4e8edocker_container\u8fd9\u4e2acgroup\u3002\u8fd9\u6837\uff0c\u8be5\u5bb9\u5668\u5185\u7684\u8fdb\u7a0b\u7684CPU\u4f7f\u7528\u7387\u5c06\u88ab\u9650\u5236\u572850%\u4ee5\u5185\u3002<\/p>\n<ol>\n<li>namespace<\/li>\n<\/ol>\n<p>namespace\u53ef\u4ee5\u4e3a\u8fdb\u7a0b\u63d0\u4f9b\u4e00\u4e2a\u72ec\u7acb\u7684\u8fd0\u884c\u73af\u5883\uff0c\u5305\u62ec\u6587\u4ef6\u7cfb\u7edf\u548c\u8fdb\u7a0b\u7a7a\u95f4\u3002\u901a\u8fc7\u4f7f\u7528namespace\uff0c\u6211\u4eec\u53ef\u4ee5\u5b9e\u73b0\u5bb9\u5668\u4e0e\u5bbf\u4e3b\u673a\u4e4b\u95f4\u7684\u9694\u79bb\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528namespace\u9694\u79bb\u5bb9\u5668\u4e2d\u6587\u4ef6\u7cfb\u7edf\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>#define _GNU_SOURCE\n#include &lt;sched.h&gt;\n#include &lt;stdio.h&gt;\n#include &lt;stdlib.h&gt;\n#include &lt;unistd.h&gt;\n\nint main() {\n    \/\/ \u521b\u5efa\u4e00\u4e2a\u65b0\u7684namespace\n    int ret = unshare(CLONE_NEWNS);\n    if (ret) {\n        perror(\"unshare\");\n        exit(EXIT_FAILURE);\n    }\n\n    \/\/ \u5728\u65b0\u7684namespace\u4e2d\u6302\u8f7d\u4e00\u4e2a\u6587\u4ef6\u7cfb\u7edf\n    ret = mount(\"rootfs\", \"\/mnt\", \"ext4\", MS_MGC_VAL, NULL);\n    if (ret) {\n        perror(\"mount\");\n        exit(EXIT_FAILURE);\n    }\n\n    \/\/ \u6267\u884c\u5bb9\u5668\u9700\u8981\u7684\u547d\u4ee4\n    system(\"\/bin\/bash\");\n\n    return 0;\n}&lt;\/unistd.h&gt;&lt;\/stdlib.h&gt;&lt;\/stdio.h&gt;&lt;\/sched.h&gt;<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528unshare\u51fd\u6570\u521b\u5efa\u4e86\u4e00\u4e2a\u65b0\u7684namespace\uff0c\u5e76\u5728\u5176\u4e2d\u6302\u8f7d\u4e86\u4e00\u4e2arootfs\u6587\u4ef6\u7cfb\u7edf\u3002\u63a5\u7740\uff0c\u6211\u4eec\u6267\u884c\u4e86\u4e00\u4e2a\/bin\/bash\u547d\u4ee4\uff0c\u8fd9\u4e2a\u88ab\u6267\u884c\u7684\u547d\u4ee4\u5c06\u5728\u65b0\u7684namespace\u4e2d\u8fd0\u884c\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u5bf9\u6587\u4ef6\u7cfb\u7edf\u7684\u9694\u79bb\u3002<\/p>\n<p>\u4e8c\u3001Docker\u4e2d\u7684\u5bb9\u5668\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406<\/p>\n<p>Docker\u5728\u63d0\u4f9b\u5bb9\u5668\u7684\u57fa\u7840\u4e0a\uff0c\u8fd8\u63d0\u4f9b\u4e86\u4e00\u4e9b\u9ad8\u7ea7\u529f\u80fd\uff0c\u5982\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u548c\u8d44\u6e90\u7ba1\u7406\u3002\u8fd9\u4e9b\u529f\u80fd\u4f7f\u5f97Docker\u6210\u4e3a\u4e00\u4e2a\u5f3a\u5927\u7684\u5bb9\u5668\u7ba1\u7406\u5e73\u53f0\u3002<\/p>\n<ol>\n<li>\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6<\/li>\n<\/ol>\n<p>Docker\u901a\u8fc7\u4f7f\u7528\u8c03\u5ea6\u5668\uff08scheduler\uff09\u5b9e\u73b0\u5bb9\u5668\u7684\u52a8\u6001\u8c03\u5ea6\u3002\u8c03\u5ea6\u5668\u53ef\u4ee5\u6839\u636e\u4e0d\u540c\u7684\u8c03\u5ea6\u7b56\u7565\u81ea\u52a8\u5c06\u5bb9\u5668\u5206\u914d\u7ed9\u5bbf\u4e3b\u673a\u3002\u5e38\u7528\u7684\u8c03\u5ea6\u7b56\u7565\u6709\uff1a<\/p>\n<ul>\n<li>\u968f\u673a\u8c03\u5ea6\uff1a\u6839\u636e\u968f\u673a\u7b97\u6cd5\u5c06\u5bb9\u5668\u5206\u914d\u7ed9\u5bbf\u4e3b\u673a\uff1b<\/li>\n<li>\u8d1f\u8f7d\u5747\u8861\u8c03\u5ea6\uff1a\u6839\u636e\u5bbf\u4e3b\u673a\u7684\u8d1f\u8f7d\u60c5\u51b5\u5c06\u5bb9\u5668\u5206\u914d\u7ed9\u6700\u7a7a\u95f2\u7684\u5bbf\u4e3b\u673a\uff1b<\/li>\n<li>\u534f\u4f5c\u8c03\u5ea6\uff1a<\/li>\n<\/ul>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528Docker\u7684\u8c03\u5ea6\u5668\u8fdb\u884c\u5bb9\u5668\u8c03\u5ea6\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>#!\/bin\/bash\n\n# \u4f7f\u7528\u8d1f\u8f7d\u5747\u8861\u8c03\u5ea6\u5668\ndocker run -d -p 8080:80 --name=mynginx --scheduler=random nginx<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528\u4e86\u8d1f\u8f7d\u5747\u8861\u8c03\u5ea6\u5668\u5c06\u4e00\u4e2a\u540d\u4e3amynginx\u7684\u5bb9\u5668\u5206\u914d\u7ed9\u4e00\u4e2a\u5bbf\u4e3b\u673a\u3002\u8be5\u5bb9\u5668\u5c06\u76d1\u542c\u5bbf\u4e3b\u673a\u76848080\u7aef\u53e3\uff0c\u5e76\u5c06\u8bf7\u6c42\u8f6c\u53d1\u5230\u5bb9\u5668\u5185\u768480\u7aef\u53e3\u3002<\/p>\n<ol>\n<li>\u8d44\u6e90\u7ba1\u7406<\/li>\n<\/ol>\n<p>Docker\u63d0\u4f9b\u4e86\u4e00\u7cfb\u5217\u547d\u4ee4\u548cAPI\u4ee5\u5b9e\u73b0\u5bf9\u5bb9\u5668\u7684\u8d44\u6e90\u7ba1\u7406\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u8fd9\u4e9b\u529f\u80fd\u6765\u76d1\u63a7\u548c\u7ba1\u7406\u5bb9\u5668\u7684\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a\u4f7f\u7528Docker\u547d\u4ee4\u67e5\u770b\u5bb9\u5668\u8d44\u6e90\u4f7f\u7528\u60c5\u51b5\u7684\u793a\u4f8b\u4ee3\u7801\uff1a<\/p>\n<pre>#!\/bin\/bash\n\n# \u67e5\u770b\u5bb9\u5668\u7684CPU\u4f7f\u7528\u60c5\u51b5\ndocker stats --format \"table {{.Container}}    {{.CPUPerc}}    {{.MemUsage}}\" my_container<\/pre>\n<p> \u767b\u5f55\u540e\u590d\u5236 <\/p>\n<p>\u5728\u4e0a\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528docker stats\u547d\u4ee4\u67e5\u770b\u4e86\u4e00\u4e2a\u540d\u4e3amy_container\u7684\u5bb9\u5668\u7684CPU\u4f7f\u7528\u7387\u548c\u5185\u5b58\u4f7f\u7528\u60c5\u51b5\u3002<\/p>\n<p>\u7ed3\u8bba\uff1a<br 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