{"id":1284,"date":"2022-05-08T05:10:28","date_gmt":"2022-05-07T20:10:28","guid":{"rendered":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/?p=1284"},"modified":"2024-10-06T23:29:58","modified_gmt":"2024-10-06T14:29:58","slug":"centos8%e3%81%a7ctrlaltdelete%e3%81%ab%e3%82%88%e3%82%8bos%e5%86%8d%e8%b5%b7%e5%8b%95%e3%82%92%e7%84%a1%e5%8a%b9%e3%81%ab%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/archives\/1284","title":{"rendered":"CentOS8\u3067Ctrl+Alt+Delete\u306b\u3088\u308bOS\u518d\u8d77\u52d5\u3092\u7121\u52b9\u306b\u3059\u308b"},"content":{"rendered":"\n<p>CentOS Stream release 8<\/p>\n\n\n\n<p>CentOS8\u3067\u306f<kbd>Ctrl<\/kbd>+<kbd>Alt<\/kbd>+<kbd>Delete<\/kbd>\u30ad\u30fc\u306e\u62bc\u4e0b\u3067OS\u518d\u8d77\u52d5\u304c\u5b9f\u884c\u3055\u308c\u3066\u3057\u307e\u3046\u3002\u8aa4\u3063\u3066<kbd>Ctrl<\/kbd>+<kbd>Alt<\/kbd>+<kbd>Delete<\/kbd>\u3092\u9001\u4fe1\u3059\u308b\u3068\u5927\u5909\u306a\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u3067\u3042\u308b\u304b\u3089\u3053\u308c\u3092\u7121\u52b9\u306b\u3059\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-content\/uploads\/2022\/05\/ctrlaltdel1.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"724\" height=\"466\" src=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-content\/uploads\/2022\/05\/ctrlaltdel1.gif\" alt=\"\" class=\"wp-image-1285\" style=\"width:543px;height:350px\"\/><\/a><figcaption class=\"wp-element-caption\">\u56f31. Ctrl+Alt+Delete\u3067OS\u304c\u518d\u8d77\u52d5\u3059\u308b\u69d8\u5b50<\/figcaption><\/figure>\n<\/div>\n\n\n<p><kbd>Ctrl<\/kbd>+<kbd>Alt<\/kbd>+<kbd>Delete<\/kbd>\u306e\u52d5\u4f5c\u3092\u53f8\u3069\u3063\u3066\u3044\u308b\u306e\u306fctrl-alt-del.target\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u3063\u305f\u3002reboot.target\u306e\u30a8\u30a4\u30ea\u30a2\u30b9\u3068\u3057\u3066\u5b58\u5728\u3057\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ ls -l \/lib\/systemd\/system\/ctrl-alt-del.target\nlrwxrwxrwx. 1 root root 13  2\u6708 12 00:37 \/lib\/systemd\/system\/ctrl-alt-del.target -&gt; reboot.target<\/pre>\n\n\n\n<p>\u3057\u305f\u304c\u3063\u3066\u3053\u308c\u3092mask\u3059\u308c\u3070\u5b9c\u3057\u3044\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo systemctl mask ctrl-alt-del.target\nCreated symlink \/etc\/systemd\/system\/ctrl-alt-del.target \u2192 \/dev\/null.\n\n$ systemctl status ctrl-alt-del.target\n\u25cf ctrl-alt-del.target\n   Loaded: <strong class=\"orange\">masked<\/strong> (Reason: Unit ctrl-alt-del.target is masked.)\n   Active: inactive (dead)<\/pre>\n\n\n\n<p>\u3053\u308c\u3067<kbd>Ctrl<\/kbd>+<kbd>Alt<\/kbd>+<kbd>Delete<\/kbd>\u304c\u9001\u4fe1\u3055\u308c\u3066\u3082OS\u518d\u8d77\u52d5\u304c\u59a8\u3052\u3089\u308c\u308b\u3002\/var\/log\/messages\u306b\u305d\u306e\u65e8\u3001\u51fa\u529b\u3082\u3055\u308c\u308b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo tail -f \/var\/log\/messages\nMay  8 04:32:35 lab systemd[1]: Received SIGINT.\nMay  8 04:32:35 lab systemd[1]: Failed to enqueue ctrl-alt-del.target job: Unit ctrl-alt-del.target is masked.<\/pre>\n\n\n\n<p>\u3057\u304b\u3057\u4e4d\u3089\u30012\u79d2\u9593\u30677\u5ea6\u4ee5\u4e0a<kbd>Ctrl<\/kbd>+<kbd>Alt<\/kbd>+<kbd>Delete<\/kbd>\u304c\u9001\u4fe1\u3055\u308c\u305f\u5834\u5408\u306f\u3084\u306f\u308a\u518d\u8d77\u52d5\u304c\u767a\u751f\u3059\u308b\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-content\/uploads\/2022\/05\/ctrlaltdel2.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"802\" height=\"665\" src=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-content\/uploads\/2022\/05\/ctrlaltdel2.gif\" alt=\"\" class=\"wp-image-1286\" style=\"width:602px;height:499px\"\/><\/a><figcaption class=\"wp-element-caption\">\u56f32. 2\u79d2\u9593\u306b7\u5ea6\u4ee5\u4e0a\u306eCtrl+Alt+Delete\u9001\u4fe1\u3067OS\u518d\u8d77\u52d5\u304c\u767a\u751f\u3059\u308b\u69d8\u5b50<\/figcaption><\/figure>\n<\/div>\n\n\n<p>\u3053\u308c\u3092\u3082\u7121\u52b9\u306b\u3059\u308b\u306b\u306fsystem.conf\u306eCtrlAltDelBurstAction\u3092none\u306b\u30bb\u30c3\u30c8\u3059\u308b\u3002<\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>CtrlAltDelBurstAction=<br>Defines what action will be performed if user presses Ctrl-Alt-Delete more than 7 times in 2s. Can be set to &#8220;reboot-force&#8221;, &#8220;poweroff-force&#8221;, &#8220;reboot-immediate&#8221;, &#8220;poweroff-immediate&#8221; or disabled with &#8220;none&#8221;. Defaults to &#8220;reboot-force&#8221;.<\/p>\n<cite>man systemd-system.conf<\/cite><\/blockquote>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo vi \/etc\/systemd\/system.conf\n#CtrlAltDelBurstAction=reboot-force\n\u2193\nCtrlAltDelBurstAction=none<\/pre>\n\n\n\n<p>\u305d\u3046\u3057\u305f\u3089systemd\u3092\u518d\u8d77\u52d5\u3057\u3066system.conf\u3092\u8aad\u307f\u8fbc\u307f\u306a\u304a\u3059\u3002<\/p>\n\n\n\n<pre class=\"wp-block-preformatted\">$ sudo systemctl daemon-reexec<\/pre>\n\n\n\n<p>\u3053\u308c\u3067\u3082\u3046\u3069\u3093\u306a\u306b<kbd>Ctrl<\/kbd>+<kbd>Alt<\/kbd>+<kbd>Delete<\/kbd>\u3092\u9001\u4fe1\u3057\u3066\u3082OS\u518d\u8d77\u52d5\u306f\u8d77\u3053\u3089\u306a\u304f\u306a\u3063\u305f\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><a href=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-content\/uploads\/2022\/05\/ctrlaltdel3.gif\"><img loading=\"lazy\" decoding=\"async\" width=\"802\" height=\"665\" src=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-content\/uploads\/2022\/05\/ctrlaltdel3.gif\" alt=\"\" class=\"wp-image-1287\" style=\"width:602px;height:499px\"\/><\/a><figcaption class=\"wp-element-caption\">\u56f33. OS\u518d\u8d77\u52d5\u304c\u6291\u5236\u3055\u308c\u305f\u69d8\u5b50<\/figcaption><\/figure>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>CentOS Stream release 8 CentOS8\u3067\u306fCtrl+Alt+Delete\u30ad\u30fc\u306e\u62bc\u4e0b\u3067OS\u518d\u8d77\u52d5\u304c\u5b9f\u884c\u3055\u308c\u3066\u3057\u307e\u3046\u3002\u8aa4\u3063\u3066Ctrl+Alt+Delete\u3092\u9001\u4fe1\u3059\u308b\u3068\u5927\u5909\u306a\u30a4\u30f3\u30b7\u30c7\u30f3\u30c8\u3067\u3042\u308b\u304b\u3089\u3053\u308c\u3092\u7121\u52b9\u306b\u3059\u308b\u3002 Ctrl+Alt+Delete\u306e\u52d5\u4f5c\u3092\u53f8\u3069\u3063\u3066\u3044\u308b\u306e\u306fctrl-alt-del.target\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u3063\u305f\u3002reboot.target\u306e\u30a8\u30a4\u30ea\u30a2\u30b9\u3068\u3057\u3066\u5b58\u5728\u3057\u3066\u3044\u308b &#8230; <a title=\"CentOS8\u3067Ctrl+Alt+Delete\u306b\u3088\u308bOS\u518d\u8d77\u52d5\u3092\u7121\u52b9\u306b\u3059\u308b\" class=\"read-more\" href=\"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/archives\/1284\" aria-label=\"CentOS8\u3067Ctrl+Alt+Delete\u306b\u3088\u308bOS\u518d\u8d77\u52d5\u3092\u7121\u52b9\u306b\u3059\u308b \u306b\u3064\u3044\u3066\u3055\u3089\u306b\u8aad\u3080\">\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":1218,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[157],"tags":[199,212],"class_list":["post-1284","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-linux","tag-centos","tag-systemd"],"views":12193,"_links":{"self":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/posts\/1284","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/comments?post=1284"}],"version-history":[{"count":0,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/posts\/1284\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/media\/1218"}],"wp:attachment":[{"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/media?parent=1284"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/categories?post=1284"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www7390uo.sakura.ne.jp\/wordpress\/wp-json\/wp\/v2\/tags?post=1284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}