{"id":206,"date":"2023-05-24T20:12:41","date_gmt":"2023-05-24T12:12:41","guid":{"rendered":"https:\/\/www.dataz8.com\/?p=206"},"modified":"2023-06-05T10:19:25","modified_gmt":"2023-06-05T02:19:25","slug":"centos7%e5%90%af%e5%8a%a8%e6%b5%81%e7%a8%8b","status":"publish","type":"post","link":"https:\/\/www.dataz8.com\/?p=206","title":{"rendered":"CentOS7\u542f\u52a8\u6d41\u7a0b"},"content":{"rendered":"\n<figure class=\"wp-block-image aligncenter size-large is-resized\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/www.dataz8.com\/wp-content\/uploads\/2023\/05\/centos7\u542f\u52a8\u6d41\u7a0b\u56fe.png\" alt=\"\" width=\"664\" height=\"642\"\/><\/figure>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_89 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.dataz8.com\/?p=206\/#%E7%AC%AC%E4%B8%80%E6%AD%A5_%E7%A1%AC%E4%BB%B6%E5%90%AF%E5%8A%A8%E9%98%B6%E6%AE%B5\" >\u7b2c\u4e00\u6b65 \u786c\u4ef6\u542f\u52a8\u9636\u6bb5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.dataz8.com\/?p=206\/#%E7%AC%AC%E4%BA%8C%E6%AD%A5_GRUB2%E5%BC%95%E5%AF%BC%E9%98%B6%E6%AE%B5\" >\u7b2c\u4e8c\u6b65 GRUB2\u5f15\u5bfc\u9636\u6bb5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.dataz8.com\/?p=206\/#%E7%AC%AC%E4%B8%89%E6%AD%A5_%E5%86%85%E6%A0%B8%E5%BC%95%E5%AF%BC%E9%98%B6%E6%AE%B5\" >\u7b2c\u4e09\u6b65 \u5185\u6838\u5f15\u5bfc\u9636\u6bb5<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.dataz8.com\/?p=206\/#%E7%AC%AC%E5%9B%9B%E6%AD%A5_systemd%E5%88%9D%E5%A7%8B%E5%8C%96%E9%98%B6%E6%AE%B5%EF%BC%88%E5%8F%88%E5%8F%AB%E7%B3%BB%E7%BB%9F%E5%88%9D%E5%A7%8B%E5%8C%96%E9%98%B6%E6%AE%B5%EF%BC%89\" >\u7b2c\u56db\u6b65 systemd\u521d\u59cb\u5316\u9636\u6bb5\uff08\u53c8\u53eb\u7cfb\u7edf\u521d\u59cb\u5316\u9636\u6bb5\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.dataz8.com\/?p=206\/#%E6%80%BB%E7%BB%93%EF%BC%9A\" >\u603b\u7ed3\uff1a<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC%E4%B8%80%E6%AD%A5_%E7%A1%AC%E4%BB%B6%E5%90%AF%E5%8A%A8%E9%98%B6%E6%AE%B5\"><\/span>\u7b2c\u4e00\u6b65 \u786c\u4ef6\u542f\u52a8\u9636\u6bb5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e00\u9636\u6bb5\u6d41\u7a0b\uff1a\u6253\u5f00\u7535\u6e90\uff1bPOST\u81ea\u68c0\uff1bBIOS\u9010\u4e00\u6392\u67e5\u8bbe\u5907\u542f\u52a8\u987a\u5e8f\uff1b\u5982\u679c\u662f\u786c\u76d8\u542f\u52a8\uff0c\u8bfb\u53d6\u786c\u76d8\u7684MBR\u7684BootLoader\u3002\uff08\u8fd9\u91cc\u9ed8\u8ba4MBR\u5206\u533a\uff0c\u6682\u4e0d\u8003\u8651GPT\u5206\u533a\uff09<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u91cc\u4e3b\u8981\u6709\u4e09\u4e2a\u9700\u8981\u4e86\u89e3\u7684\u5730\u65b9\uff1aBIOS\u542f\u52a8\u987a\u5e8f\u3001MBR\u548cBootLoader\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff081\uff09BIOS\u542f\u52a8\u987a\u5e8f\uff0c\u4e00\u822c\u542b\u6709\u5149\u9a71\u3001U\u76d8\u3001\u786c\u76d8A\u3001\u786c\u76d8B\u3002\u6309\u6b21\u5e8f\u67e5\u627e\u5404\u5f15\u5bfc\u8bbe\u5907\uff0c\u7b2c\u4e00\u4e2a\u6709\u5f15\u5bfc\u7a0b\u5e8f\u7684\u8bbe\u5907\u5373\u4e3a\u672c\u6b21\u542f\u52a8\u7528\u5230\u8bbe\u5907\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff082\uff09MBR\uff08Main Boot Record\uff09\uff0c\u662f\u786c\u76d8\u76840\u67f1\u9762\uff0c0\u78c1\u9053\u30011\u6247\u533a\uff08\u7b2c\u4e00\u4e2a\u6247\u533a\uff09\uff0c\u79f0\u4e3a\u4e3b\u5f15\u5bfc\u6247\u533a\uff0c\u4e5f\u79f0\u4e3a\u4e3b\u5f15\u5bfc\u8bb0\u5f55\u3002\u5b83\u7531\u4e09\u90e8\u5206\u7ec4\u6210\uff08BootLoader\uff09\u3001\u786c\u76d8\u5206\u533a\u8868DPT\uff08Disk Partition table\uff09\u548c\u786c\u76d8\u6709\u6548\u6807\u5fd7\uff0855AA\uff09\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\uff1a\u786c\u76d8\u9ed8\u8ba4\u4e00\u4e2a\u6247\u533a\u5927\u5c0f\u4e3a512\u5b57\u8282\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e00\u90e8\u5206\uff1a\u4e3b\u5f15\u5bfc\u7a0b\u5e8f\uff08BootLoader\uff09\u5360446\u4e2a\u5b57\u8282\uff0c\u8d1f\u8d23\u4ece\u6d3b\u52a8\u5206\u533a\u4e2d\u88c5\u8f7d\uff0c\u5e76\u8fd0\u884c\u7cfb\u7edf\u5f15\u5bfc\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e8c\u90e8\u5206\uff1a\u786c\u76d8\u5206\u533aDPT\u536064\u4e2a\u5b57\u8282\uff0c\u67094\u4e2a\u5206\u533a\u8868\u9879\uff0c\u6bcf\u4e2a\u5206\u533a\u8868\u9879\u536016\u4e2a\u5b57\u8282\uff0c\u786c\u76d8\u4e2d\u5206\u533a\u6709\u591a\u5c11\u4ee5\u53ca\u6bcf\u4e00\u4e2a\u5206\u533a\u7684\u5927\u5c0f\u90fd\u8bb0\u5f55\u5728\u5176\u4e2d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u7b2c\u4e09\u90e8\u5206\uff1a\u786c\u76d8\u6709\u6548\u6807\u5fd7\uff0c\u53602\u4e2a\u5b57\u8282\uff0c\u56fa\u5b9a\u4f4d55AA\u3002\u5982\u679c\u8fd9\u4e2a\u6807\u5fd7\u4f4d0xAA55\uff0c\u5c31\u8ba4\u4e3a\u8fd9\u4e2a\u662fMBR\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff083\uff09BootLoader<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0d\u540c\u7684\u7cfb\u7edf\u6709\u4e0d\u540c\u7684\u4e3b\u5f15\u5bfc\u7a0b\u5e8f\uff08BootLoader\uff09\u3002Windows\u4f7f\u7528\u7684\u662fNTLDR\uff08NT Loader\uff0cWindows NT\u7cfb\u5217\u64cd\u4f5c\u7cfb\u7edf\uff09\u3001Bootmgr\uff08Boot Manager\uff0cWindows Vista\uff0c7\uff0c8\uff0c10\uff09\uff0cLinux\u4e00\u822c\u4f7f\u7528\u7684\u662fgrub\uff08\u4e5f\u53ebgrub legacy\uff09\u548cgrub2\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC%E4%BA%8C%E6%AD%A5_GRUB2%E5%BC%95%E5%AF%BC%E9%98%B6%E6%AE%B5\"><\/span>\u7b2c\u4e8c\u6b65 GRUB2\u5f15\u5bfc\u9636\u6bb5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ece\u8fd9\u4e00\u6b65\u5f00\u59cb\uff0cCentOS6\u548cCentOS7\u7684\u542f\u52a8\u6d41\u7a0b\u533a\u522b\u5f00\u59cb\u5c55\u73b0\u51fa\u6765\u3002CentOS7\u7684\u4e3b\u5f15\u5bfc\u7a0b\u5e8f\u4f7f\u7528\u7684\u662fgrub2\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e00\u6b65\u6d41\u7a0b\uff1a\u663e\u793a\u52a0\u8f7d\u4e24\u4e2a\u955c\u50cf\uff0c\u518d\u52a0\u8f7dMOD\u6a21\u5757\u6587\u4ef6\uff0c\u628agrub2\u7a0b\u5e8f\u52a0\u8f7d\u6267\u884c\uff0c\u63a5\u7740\u89e3\u6790\u914d\u7f6e\u6587\u4ef6\/boot\/grub2\/grub.cfg\uff0c\u6839\u636e\u914d\u7f6e\u6587\u4ef6\u52a0\u8f7d\u5185\u6838\u955c\u50cf\u5230\u5185\u5b58\uff0c\u4e4b\u540e\u6784\u5efa\u865a\u62df\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u6700\u540e\u8f6c\u5230\u5185\u6838\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5728\u8fd9\u91ccgrub.cfg\u914d\u7f6e\u6587\u4ef6\u5df2\u7ecf\u6bd4\u8f83\u590d\u6742\u4e86\uff0c\u4f46\u5e76\u4e0d\u7528\u62c5\u5fc3\uff0c\u5230\u4e86CentOS7\u79cd\u4e00\u822c\u662f\u4f7f\u7528\u547d\u4ee4\u8fdb\u884c\u914d\u7f6e\uff0c\u800c\u4e0d\u76f4\u63a5\u53bb\u4fee\u6539\u914d\u7f6e\u6587\u4ef6\u3002\u4e0d\u8fc7\u6211\u4eec\u53ef\u4ee5\u770b\u5230grub.cfg\u914d\u7f6e\u5f00\u5934\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code># It is automatically generated by grub2-mkconfig using templates\n# from \/etc\/grub.d and settings from \/etc\/default\/grub<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u8bf4\u660e\u4e86\u7531\/etc\/grub.d\u76ee\u5f55\u4e0b\u6587\u4ef6\u548c\/etc\/default\/grub\u6587\u4ef6\u7ec4\u6210\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e00\u822c\u4fee\u6539\u597d\u914d\u7f6e\u540e\uff0c\u90fd\u9700\u8981\u4f7f\u7528\u547d\u4ee4 grub2-mkconfig -o \/boot\/grub2\/grub.cfg\uff0c\u5c06\u914d\u7f6e\u6587\u4ef6\u91cd\u65b0\u751f\u6210\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC%E4%B8%89%E6%AD%A5_%E5%86%85%E6%A0%B8%E5%BC%95%E5%AF%BC%E9%98%B6%E6%AE%B5\"><\/span>\u7b2c\u4e09\u6b65 \u5185\u6838\u5f15\u5bfc\u9636\u6bb5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e00\u6b65\u6d41\u7a0b\uff1a\u901a\u8fc7\u5185\u5b58\u4e2d\u7684\u865a\u62df\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u52a0\u8f7d\u9a71\u52a8\uff0c\u7136\u540e\u5207\u6362\u5230\u771f\u6b63\u7684\u6839\u6587\u4ef6\u7cfb\u7edf\uff0c\u5e76\u6267\u884c\/sbin\/init\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E7%AC%AC%E5%9B%9B%E6%AD%A5_systemd%E5%88%9D%E5%A7%8B%E5%8C%96%E9%98%B6%E6%AE%B5%EF%BC%88%E5%8F%88%E5%8F%AB%E7%B3%BB%E7%BB%9F%E5%88%9D%E5%A7%8B%E5%8C%96%E9%98%B6%E6%AE%B5%EF%BC%89\"><\/span>\u7b2c\u56db\u6b65 systemd\u521d\u59cb\u5316\u9636\u6bb5\uff08\u53c8\u53eb\u7cfb\u7edf\u521d\u59cb\u5316\u9636\u6bb5\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CentOS7\u4e2d\uff0c\u521d\u59cb\u5316\u8fdb\u7a0b\u53d8\u4e3a\u4e86systemd\u3002\u6267\u884c\u9ed8\u8ba4target\u914d\u7f6e\u6587\u4ef6\/etc\/systemd\/system\/default.target\uff08\u8fd9\u662f\u4e00\u4e2a\u8f6f\u94fe\u63a5\uff0c\u4e0e\u9ed8\u8ba4\u8fd0\u884c\u7ea7\u522b\u6709\u5173\uff09\u3002\u7136\u540e\u6267\u884csysinit.target\uff08\/usr\/lib\/systemd\/system\/sysinit.target\uff09\u521d\u59cb\u5316\u7cfb\u7edf\u548cbasic.target\uff08\/usr\/lib\/systemd\/system\/basic.target\uff09\u6765\u51c6\u5907\u64cd\u4f5c\u7cfb\u7edf\u3002\u63a5\u7740\u542f\u52a8multi-user.target\uff08\/usr\/lib\/systemd\/system\/multi-user.target\uff09\u4e0b\u7684\u672c\u673a\u4e0e\u670d\u52a1\u5668\u670d\u52a1\uff0c\u5e76\u68c0\u67e5\/etc\/rc.d\/rc.local\u6587\u4ef6\u662f\u5426\u6709\u7528\u6237\u81ea\u5b9a\u4e49\u811a\u672c\u9700\u8981\u542f\u52a8\u3002\u6700\u540e\u6267\u884cmulti-user\u4e0b\u7684getty.target\u53ca\u767b\u5f55\u670d\u52a1\uff0c\u68c0\u67e5default.target\u662f\u5426\u6709\u5176\u4ed6\u7684\u670d\u52a1\u9700\u8981\u542f\u52a8\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6ce8\u610f\uff1a\/etc\/systemd\/system\/default.target\u6307\u5411\u4e86\/lib\/systemd\/system\/\u76ee\u5f55\u4e0b\u7684graphical.target\u6216multi-user.target\u3002\u800cgraphical.target\u4f9d\u8d56multi-user.target\uff0cmulti-user.target\u4f9d\u8d56basic.target\uff0cbasic.target\u4f9d\u8d56sysinit.target\uff0c\u6240\u4ee5\u5012\u8fc7\u6765\u6267\u884c\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">System\u6982\u8ff0\uff1asystemd\u5373\u4e3asystem daemon\uff0c\u662fLinux\u4e0b\u7684\u4e00\u79cdinit\u8f6f\u4ef6\uff0c\u5f00\u53d1\u76ee\u6807\u662f\u63d0\u4f9b\u66f4\u4f18\u79c0\u7684\u6846\u67b6\u4ee5\u8868\u793a\u7cfb\u7edf\u670d\u52a1\u95f4\u7684\u4f9d\u8d56\u5173\u7cfb\uff0c\u5e76\u4f9d\u6b64\u5b9e\u73b0\u7cfb\u7edf\u521d\u59cb\u5316\u65f6\u670d\u52a1\u7684\u5e76\u884c\u542f\u52a8\uff0c\u540c\u65f6\u8fbe\u5230\u964d\u4f4eShell\u7cfb\u7edf\u5f00\u9500\u7684\u6548\u679c\uff0c\u6700\u7ec8\u4ee3\u66ff\u73b0\u5728\u5e38\u7528\u7684System V\u4e0eBSD\u98ce\u683c\u7684init\u7a0b\u5e8f\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4e0e\u591a\u6570\u53d1\u884c\u7248\u4f7f\u7528\u7684System V\u98ce\u683c\u7684init\u76f8\u6bd4\uff0csystemd\u91c7\u7528\u4e86\u4e00\u4e0b\u65b0\u6280\u672f\uff1a\u2460 \u91c7\u7528Socket\u6fc0\u6d3b\u5f0f\u4e0e\u603b\u7ebf\u6fc0\u6d3b\u5f0f\u670d\u52a1\uff0c\u4ee5\u63d0\u9ad8\u76f8\u4e92\u4f9d\u8d56\u7684\u5404\u670d\u52a1\u7684\u5e76\u884c\u8fd0\u884c\u6027\u80fd\uff1b\u2461 \u7528Cgroup\u4ee3\u66ffPID\u6765\u8ffd\u8e2a\u8fdb\u7a0b\uff0c\u5373\u4f7f\u662f\u4e24\u6b21fork\u4e4b\u540e\u751f\u6210\u7684\u5b88\u62a4\u8fdb\u7a0b\u4e5f\u4e0d\u4f1a\u8131\u79bbsystemd\u7684\u63a7\u5236\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">unit\u5bf9\u8c61\uff1aunit\u8868\u793a\u4e0d\u540c\u7c7b\u578b\u7684systemd\u5bf9\u8c61\uff0c\u901a\u8fc7\u914d\u7f6e\u6587\u4ef6\u8fdb\u884c\u6807\u8bc6\u548c\u914d\u7f6e\uff1b\u6587\u4ef6\u4e3b\u8981\u5305\u542b\u4e86\u7cfb\u7edf\u670d\u52a1\u3001\u76d1\u542csocket\u3001\u4fdd\u5b58\u7684\u7cfb\u7edf\u5feb\u7167\u4ee5\u53ca\u5176\u4ed6init\u76f8\u5173\u7684\u4fe1\u606f\u3002\uff08\u4e5f\u5c31\u662fCentOS6\u4e2d\u7684\u670d\u52a1\u5668\u542f\u52a8\u811a\u672c\uff09<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><strong>\/etc\/systemd\/system\/default.target<\/strong><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u662f\u4e00\u4e2a\u8f6f\u94fe\u63a5\uff0c\u548c\u9ed8\u8ba4\u8fd0\u884c\u7ea7\u522b\u6709\u5173<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">[root@k8s-master ~]# ll \/etc\/systemd\/system\/default.target<br>lrwxrwxrwx. 1 root root 37 Mar 7 2019 \/etc\/systemd\/system\/default.target -&gt; \/lib\/systemd\/system\/multi-user.target<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u6211\u4eec\u53ef\u4ee5\u5230\u8fd9\u4e2a\u76ee\u5f55\u4e0b\u770b\u770b<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;root@k8s-master system]# cd \/lib\/systemd\/system\/\n&#91;root@k8s-master system]# ls *.target\nbasic.target           default.target    hibernate.target           kexec.target           network.target          reboot.target             runlevel0.target  shutdown.target   suspend.target\nbluetooth.target       emergency.target  hybrid-sleep.target        local-fs-pre.target    nfs-client.target       remote-cryptsetup.target  runlevel1.target  sigpwr.target     swap.target\ncloud-config.target    final.target      initrd-fs.target           local-fs.target        nss-lookup.target       remote-fs-pre.target      runlevel2.target  sleep.target      sysinit.target\ncloud-init.target      getty-pre.target  initrd-root-fs.target      machines.target        nss-user-lookup.target  remote-fs.target          runlevel3.target  slices.target     system-update.target\ncryptsetup-pre.target  getty.target      initrd-switch-root.target  multi-user.target      paths.target            rescue.target             runlevel4.target  smartcard.target  timers.target\ncryptsetup.target      graphical.target  initrd.target              network-online.target  poweroff.target         rpcbind.target            runlevel5.target  sockets.target    time-sync.target\nctrl-alt-del.target    halt.target       iprutils.target            network-pre.target     printer.target          rpc_pipefs.target         runlevel6.target  sound.target      umount.target<\/code><\/pre>\n\n\n\n<p class=\"wp-block-paragraph\">\u53ef\u4ee5\u770b\u5f97\u5230runlevel\u5f00\u5934\u7684target\u6587\u4ef6\uff0c\u5bf9\u5e94\u7740CentOS6\u7684\u542f\u52a8\u7ea7\u522b\uff0c\u4e0d\u8fc7\u4e00\u6837\u662f\u8f6f\u94fe\u63a5\uff0c\u6307\u5411\u4e86\u540c\u76ee\u5f55\u4e0b\u7684\u5176\u4ed6\u6587\u4ef6\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>&#91;root@k8s-master system]# ll runlevel*.target\nlrwxrwxrwx 1 root root 15 Mar 25 17:04 runlevel0.target -&gt; poweroff.target\nlrwxrwxrwx 1 root root 13 Mar 25 17:04 runlevel1.target -&gt; rescue.target\nlrwxrwxrwx 1 root root 17 Mar 25 17:04 runlevel2.target -&gt; multi-user.target\nlrwxrwxrwx 1 root root 17 Mar 25 17:04 runlevel3.target -&gt; multi-user.target\nlrwxrwxrwx 1 root root 17 Mar 25 17:04 runlevel4.target -&gt; multi-user.target\nlrwxrwxrwx 1 root root 16 Mar 25 17:04 runlevel5.target -&gt; graphical.target\nlrwxrwxrwx 1 root root 13 Mar 25 17:04 runlevel6.target -&gt; reboot.target<\/code><\/pre>\n\n\n\n<ol class=\"wp-block-list\" start=\"2\">\n<li><strong>\/usr\/lib\/systemd\/system\/<\/strong><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u8fd9\u4e2a\u76ee\u5f55\u5b58\u50a8\u6bcf\u4e2a\u670d\u52a1\u7684\u811a\u672c\uff0c\u7c7b\u4f3cCentOS6\u7684\/etc\/init.d\/\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\" start=\"3\">\n<li><strong>\/run\/systemd\/system\/<\/strong><\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">\u7cfb\u7edf\u6267\u884c\u8fc7\u7a0b\u4e2d\u4ea7\u751f\u7684\u811a\u672c\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E6%80%BB%E7%BB%93%EF%BC%9A\"><\/span>\u603b\u7ed3\uff1a<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<ol class=\"wp-block-list\">\n<li>UEFI\u6216BIOS\u521d\u59cb\u5316\uff0c\u8fd0\u884cPOST\u5f00\u673a\u81ea\u68c0<\/li>\n\n\n\n<li>\u9009\u62e9\u542f\u52a8\u8bbe\u5907\uff0cBoot Sequence\u7cfb\u7edf\u542f\u52a8\u6b21\u5e8f\u4e00\u822c\u542b\u6709\uff1a\u5149\u76d8\u3001U\u76d8\u3001\u786c\u76d8A\u3001\u786c\u76d8B\u3002\u6309\u6b21\u6570\u67e5\u627e\u5404\u5f15\u5bfc\u8bbe\u5907\uff0c\u7b2c\u4e00\u4e2a\u6709\u5f15\u5bfc\u7a0b\u5e8f\u7684\u8bbe\u5907\u5373\u4e3a\u672c\u6b21\u542f\u52a8\u7528\u5230\u8bbe\u5907\u3002<\/li>\n\n\n\n<li>\u5f15\u5bfc\u88c5\u8f7d\u7a0b\u5e8f\uff0c\u52a0\u8f7d\/boot\u5206\u533a\u6587\u4ef6\u7cfb\u7edf\u9a71\u52a8<\/li>\n\n\n\n<li>\u52a0\u8f7d\u88c5\u8f7d\u7a0b\u5e8f\u7684\u914d\u7f6e\u6587\u4ef6\uff1a\/etc\/grub.d\/ \/etc\/default\/grub \/boot\/grub2\/grub.cfg<\/li>\n\n\n\n<li>\u52a0\u8f7dinitramfs\u9a71\u52a8\u6a21\u5757\u548c\u5185\u6838vmlinuz\uff0cinitramfs\u662f\u57fa\u4e8e\u5185\u5b58\u7684\u6587\u4ef6\u7cfb\u7edf<\/li>\n\n\n\n<li>\u5185\u6838\u521d\u59cb\u5316\uff0ccentos7\u4f7f\u7528systemd\u4ee3\u66ffinit<\/li>\n\n\n\n<li>\u6267\u884cinitrd.target\u6240\u6709\u5355\u5143\uff0c\u5305\u62ec\u6302\u8f7d\/etc\/fstab<\/li>\n\n\n\n<li>\u4eceinitrd.target\u8ddf\u6587\u4ef6\u7cfb\u7edf\u5207\u6362\u5230\u78c1\u76d8\u6839\u76ee\u5f55<\/li>\n\n\n\n<li>systemd\u6267\u884c\u9ed8\u8ba4target\u914d\u7f6e\uff0c\u914d\u7f6e\u6587\u4ef6\/etc\/systemd\/system\/default.target<\/li>\n\n\n\n<li>systemd\u6267\u884csysinit.target\u521d\u59cb\u5316\u7cfb\u7edf\u4ee5\u53cabasic.target\u51c6\u5907\u64cd\u4f5c\u7cfb\u7edf<\/li>\n\n\n\n<li>systemd\u542f\u52a8multi-user.target\u4e0b\u7684\u672c\u673a\u4e0e\u670d\u52a1\u5668\u670d\u52a1<\/li>\n\n\n\n<li>systemd\u6267\u884cmulti-user.target\u4e0b\u7684\/etc\/rc.d\/rc.local<\/li>\n\n\n\n<li>systemd\u6267\u884cmulti-user.target\u4e0b\u7684getty.target\u53ca\u767b\u5f55\u670d\u52a1<\/li>\n\n\n\n<li>systemd\u6267\u884cgraphical\u9700\u8981\u7684\u670d\u52a1<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u66f4\u7b80\u6d01\u7684\u8868\u8ff0<\/strong>\uff1a\u2460 \u52a0\u7535\u81ea\u68c0\uff1b\u2461 BIOS\u542f\u52a8\u5f15\u5bfc\u9636\u6bb5\uff1b\u2462 grub2\u83dc\u5355\uff1b\u2463 kernel\u52a0\u8f7d\u7cfb\u7edf\u5185\u6838\u4fe1\u606f\uff1b\u2464 \u8fd0\u884csystemd\u8fdb\u7a0b\uff1b\u2465 \u8fd0\u884cmingetty\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>\u8865\u5145\uff1aCentOS7\u8fd0\u884c\u7ea7\u522b\uff0c\u51717\u4e2a\u7ea7\u522b<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td><strong>init level<\/strong><\/td><td><strong>\u7ea7\u522b<\/strong><\/td><td><strong>\u76ee\u6807\u5355\u5143<\/strong><\/td><\/tr><tr><td>0<\/td><td>\u7cfb\u7edf\u5173\u673a\u7ea7\u522b\uff0c\u7cfb\u7edf\u9ed8\u8ba4\u7684\u8fd0\u884c\u7ea7\u522b\u4e0d\u80fd\u8bbe\u7f6e\u4e3a0\uff0c\u5426\u5219\u4e0d\u80fd\u6b63\u5e38\u542f\u52a8\u3002init 0 \u8fdb\u884c\u5173\u673a\u3002<\/td><td>poweroff.target<\/td><\/tr><tr><td>1<\/td><td>\u5355\u7528\u6237\u6a21\u5f0f\u7ea7\u522b\u3002root \u6743\u9650\uff0c\u7528\u4e8e\u7cfb\u7edf\u7ef4\u62a4\uff08\u6216\u4fee\u590d\u7cfb\u7edf\uff0c\u6216\u91cd\u7f6e\u7cfb\u7edf\u5bc6\u7801\u4fe1\u606f\uff09\uff0c\u7981\u6b62\u8fdc\u7a0b\u767b\u5f55\u3002\u8be5\u8fd0\u884c\u7ea7\u522b\u662f\u6ca1\u6709\u7f51\u7edc\u7684\u3002<\/td><td>rescue.target<\/td><\/tr><tr><td>2<\/td><td>\u591a\u7528\u6237\u6a21\u5f0f\u7ea7\u522b\u3002\u8be5\u7ea7\u522b\u4e0b\u6ca1\u6709NFS\u548c\u7f51\u7edc\u7684\u652f\u6301\u3002<\/td><td>multi-user.target<\/td><\/tr><tr><td>3<\/td><td>\u5b8c\u6574\u7684\u591a\u7528\u6237\u6587\u672c\u6a21\u5f0f\u7ea7\u522b\u3002\u767b\u5f55\u540e\u8fdb\u5165\u5230\u63a7\u5236\u53f0\u547d\u4ee4\u884c\u6a21\u5f0f\u3002<\/td><td>multi-user.target<\/td><\/tr><tr><td>4<\/td><td>\u9884\u7559\u7ea7\u522b\u3002\u8be5\u7ea7\u522b\u7cfb\u7edf\u672a\u4f7f\u7528\u3002<\/td><td>multi-user.target<\/td><\/tr><tr><td>5<\/td><td>\u56fe\u5f62\u5316\u6a21\u5f0f\u7ea7\u522b\u3002\u767b\u5f55\u540e\u8fdb\u5165\u56fe\u5f62GUI\u6a21\u5f0f\u3002<\/td><td>graphical.target<\/td><\/tr><tr><td>6<\/td><td>\u7cfb\u7edf\u91cd\u542f\u7ea7\u522b\u3002\u9ed8\u8ba4\u8fd0\u884c\u7ea7\u522b\u4e0d\u80fd\u8bbe\u7f6e\u4e3a6\uff0c\u5426\u5219\u7cfb\u7edf\u4e0d\u80fd\u6b63\u5e38\u542f\u52a8\u3002init 6 \u7cfb\u7edf\u4f1a\u91cd\u542f\u3002<\/td><td>reboot.target<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u53c2\u8003\u94fe\u63a5\uff1a<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">https:\/\/zhuanlan.zhihu.com\/p\/579714305<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">https:\/\/blog.csdn.net\/weixin_42688499\/article\/details\/127905081<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">https:\/\/blog.csdn.net\/qq_40880022\/article\/details\/119839142<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">https:\/\/www.cnblogs.com\/diantong\/p\/10745372.html<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u7b2c\u4e00\u6b65 \u786c\u4ef6\u542f\u52a8\u9636\u6bb5 \u8fd9\u4e00\u9636\u6bb5\u6d41\u7a0b\uff1a\u6253\u5f00\u7535\u6e90\uff1bPOST\u81ea\u68c0\uff1b &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_zb_attr":"","zolo_post_video_link":"","footnotes":""},"categories":[12],"tags":[],"series":[],"class_list":["post-206","post","type-post","status-publish","format-standard","hentry","category-12"],"_links":{"self":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts\/206","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=206"}],"version-history":[{"count":22,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts\/206\/revisions"}],"predecessor-version":[{"id":229,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=\/wp\/v2\/posts\/206\/revisions\/229"}],"wp:attachment":[{"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=206"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=206"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=206"},{"taxonomy":"series","embeddable":true,"href":"https:\/\/www.dataz8.com\/index.php?rest_route=%2Fwp%2Fv2%2Fseries&post=206"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}