{"id":3297,"date":"2024-02-09T11:45:12","date_gmt":"2024-02-09T03:45:12","guid":{"rendered":"https:\/\/www.wjxy.net.cn\/?p=3297"},"modified":"2024-02-09T11:45:12","modified_gmt":"2024-02-09T03:45:12","slug":"%e5%bc%ba%e5%88%b6%e9%87%8d%e5%90%aflinux%e7%b3%bb%e7%bb%9f%e7%9a%84%e5%87%a0%e7%a7%8d%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.wjxy.net.cn\/?p=3297","title":{"rendered":"\u5f3a\u5236\u91cd\u542fLinux\u7cfb\u7edf\u7684\u51e0\u79cd\u65b9\u6cd5"},"content":{"rendered":"\n

\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\u67d0\u4e9b\u60c5\u51b5\u4e0b Linux \u670d\u52a1\u5668\u7cfb\u7edf\u5728\u51fa\u73b0\u81f4\u547d\u9519\u8bef\u9700\u8981\u8fdc\u7a0b\u8fdb\u884c\u91cd\u542f\uff0c\u901a\u8fc7\u5e38\u89c4\u7684 reboot<\/code>\u3001init 6<\/code> \u7b49\u65b9\u6cd5\u65e0\u6cd5\u6b63\u5e38\u91cd\u542f\uff08\u4f8b\u5982\u91cd\u542f\u65f6\u5361\u5728\u9a71\u52a8\u7a0b\u5e8f\u91cc\u7b49\u60c5\u51b5\uff09\uff0c\u8fd9\u65f6\u5c31\u9700\u8981\u901a\u8fc7\u4e0b\u9762\u4ecb\u7ecd\u7684\u51e0\u79cd\u7279\u6b8a\u7684\u65b9\u6cd5\u8fdb\u884c\u5f3a\u5236\u91cd\u542f\u3002<\/p>\n\n\n\n

\n

\u6ce8\u610f<\/strong><\/p>\n\n\n\n

\u4e0b\u9762\u8fd9\u4e9b\u5f3a\u5236\u91cd\u542f Linux \u7684\u65b9\u6cd5\u90fd\u662f\u76f4\u63a5\u8df3\u8fc7 umount \u6587\u4ef6\u7cfb\u7edf\u53ca sync \u7b49\u64cd\u4f5c\uff0c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u635f\u574f\uff0c\u4e0d\u5728\u7279\u6b8a\u60c5\u51b5\u4e0b\u8bf7\u52ff\u4f7f\u7528\u3002\u53e6\u5916\u5f53\u7136\u8fd9\u4e9b\u90fd\u662f\u9700\u8981 root \u8d85\u7ea7\u7528\u6237\u6743\u9650\u7684\u54e6\u3002<\/strong><\/p>\n\n\n\n

reboot \u547d\u4ee4<\/h2>\n\n\n\n

\u76f4\u63a5\u901a\u8fc7\u8fd0\u884c reboot -nf<\/code> \u547d\u4ee4\uff0c\u8fd9\u6837\u91cd\u542f\u65f6\u53ef\u4ee5\u6307\u5b9a\u8df3\u8fc7 init \u7684\u5904\u7406\u548c sync \u64cd\u4f5c\uff0c\u8fd9\u6837\u53ef\u4ee5\u907f\u514d\u5927\u591a\u6570\u60c5\u51b5\u4e0b\u7684\u95ee\u9898\u3002<\/p>\n\n\n\n

magic SysRq key \u65b9\u6cd5<\/h2>\n\n\n\n

magic SysRq key \u901a\u8fc7 proc \u63a5\u53e3\u63d0\u4f9b\u7528\u6237\u76f4\u63a5\u53d1\u5e95\u5c42\u547d\u4ee4\u7ed9 kernel \u7684\u529f\u80fd\uff0c\u53ef\u4ee5\u5b9e\u73b0\u5173\u673a\u3001\u91cd\u542f\u3001\u5b95\u673a\u7b49\u64cd\u4f5c\uff0cLinux kernel \u9700\u8981\u5f00\u542f CONFIG_MAGIC_SYSRQ<\/code> \u624d\u53ef\u4ee5\u652f\u6301 magic SysRq key\u3002<\/p>\n\n\n\n

\u8fd0\u884c\u4e0b\u9762\u4e24\u6761\u547d\u4ee4\u5c31\u53ef\u4ee5\u76f4\u63a5\u5f3a\u5236\u91cd\u542f\u7cfb\u7edf\uff1a<\/p>\n\n\n\n

12<\/td>[root@localhost ~]<\/code>\u00a0# echo 1 > \/proc\/sys\/kernel\/sysrq<\/code>
[root@localhost ~]<\/code>\u00a0# echo b > \/proc\/sysrq-trigger<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u76f8\u5e94\u7684\u76f4\u63a5\u5f3a\u5236\u5173\u673a\u7684\u547d\u4ee4\uff1a<\/p>\n\n\n\n

12<\/td>[root@localhost ~]<\/code>\u00a0# echo 1 > \/proc\/sys\/kernel\/sysrq<\/code>
[root@localhost ~]<\/code>\u00a0# echo o > \/proc\/sysrq-trigger<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

watchdog \u65b9\u6cd5<\/h2>\n\n\n\n

\u5982\u679c Linux kernel \u672a\u5f00\u542f magic SysRq key \u6216\u8005\u4e0d\u8d77\u4f5c\u7528\uff0c\u53ef\u4ee5\u5c1d\u8bd5\u4f7f\u7528 watchdog \u91cd\u542f\u65b9\u6cd5\u3002watchdog \u901a\u8fc7\u76d1\u63a7\u6570\u636e\u8f93\u5165\u662f\u5426\u6b63\u5e38\u53ef\u4ee5\u5b9e\u73b0\u5728\u7cfb\u7edf\u51fa\u73b0\u5f02\u5e38\u65f6\u81ea\u52a8\u91cd\u542f\u7cfb\u7edf\uff0c\u8fd9\u91cc\u6211\u4eec\u521a\u597d\u53ef\u4ee5\u501f\u7528\u7684\u3002<\/p>\n\n\n\n

\u9996\u5148\u9700\u8981\u52a0\u8f7d watchdog \u652f\u6301\uff0c\u8fd9\u4e2a\u548c\u4e3b\u677f\u786c\u4ef6\u8bbe\u5907\u6709\u5173\uff0c\u5982\u679c\u53ea\u9700\u8981\u8f6f\u4ef6\u6a21\u62df\u7684\uff0c\u53ef\u4ee5\u8fd0\u884c\uff1a<\/p>\n\n\n\n

1<\/td>[root@localhost ~]<\/code> # modprobe softdog<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u547d\u4ee4\u52a0\u8f7d\u8f6f\u4ef6 watchdog \u652f\u6301\uff0c\u63a5\u7740\u518d\u8fd0\u884c\uff1a<\/p>\n\n\n\n

1<\/td>[root@localhost ~]<\/code> # cat \/dev\/watchdog<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u547d\u4ee4\uff0c\u8be5\u547d\u4ee4\u4f1a\u9a6c\u4e0a\u9000\u51fa\u5e76\u62a5\u9519\uff0c\u540c\u65f6\u7cfb\u7edf\u65e5\u5fd7\u4e2d\u5c31\u4f1a\u63d0\u793a\uff1a<\/p>\n\n\n\n

1<\/td>softdog: Unexpected close, not stopping watchdog!<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u8fd9\u5c31\u8868\u793a watchdog \u8bbe\u5907\u662f\u88ab\u610f\u5916\u5173\u95ed\u7684\u800c\u4e0d\u662f\u6b63\u5e38\u505c\u6b62\u7684\uff0c\u5927\u7ea6\u7b49\u5f85 60 \u79d2\u4e4b\u540e\u4f60\u5c31\u4f1a\u53d1\u73b0 Linux \u7cfb\u7edf\u81ea\u52a8\u91cd\u542f\u4e86\u3002Linux watchdog \u7684\u5f02\u5e38\u7b49\u5f85\u65f6\u95f4\u662f\u901a\u8fc7 \/proc\/sys\/kernel\/watchdog_thresh<\/code> \u8bbe\u7f6e\u7684\uff0c\u4e00\u822c\u9ed8\u8ba4\u4e3a 60 \u79d2\u3002<\/p>\n\n\n\n

IPMI \u65b9\u6cd5<\/h2>\n\n\n\n

\u4e0a\u9762\u51e0\u79cd\u65b9\u6cd5\u90fd\u4e0d\u80fd\u7528\uff1f\u5982\u679c\u4f60\u7684\u4e3b\u677f\u521a\u597d\u652f\u6301 IPMI \u7ba1\u7406\u63a5\u53e3\u7684\u8bdd\uff0c\u90a3\u53ef\u4ee5\u76f4\u63a5\u901a\u8fc7 IPMI \u5b9e\u73b0\u786c\u4ef6\u4e0a\u7684\u5f3a\u5236\u5173\u673a\u6216\u91cd\u542f\u3002<\/p>\n\n\n\n

\u9996\u5148\u52a0\u8f7d IPMI \u652f\u6301\uff1a<\/p>\n\n\n\n

1<\/td>[root@localhost ~]<\/code> # modprobe ipmi_msghandler ipmi_devintf ipmi_si<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u786e\u8ba4 IPMI \u8bbe\u5907\u662f\u5426\u5df2\u627e\u5230\uff1a<\/p>\n\n\n\n

1<\/td>[root@localhost ~]<\/code> # ls -l \/dev\/ipmi*<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u5982\u679c\u8f93\u51fa\u6b63\u5e38\u7684\u8bdd\u8868\u793a IPMI \u88ab\u6b63\u786e\u52a0\u8f7d\u4e86\uff0c\u63a5\u7740\u5b89\u88c5 ipmitool<\/code> \u7ba1\u7406\u5de5\u5177\u3002ipmitool<\/code> \u53ef\u4ee5\u901a\u8fc7 IPMI \u63a5\u53e3\u5b8c\u6210\u5bf9\u672c\u673a\u6216\u8fdc\u7a0b\u4e3b\u673a\u7684\u4e00\u7cfb\u5217\u7ba1\u7406\u64cd\u4f5c\u3002<\/p>\n\n\n\n

\u8fd9\u91cc\u6211\u4eec\u5c31\u7528\u76f4\u63a5\u7535\u6e90\u7ba1\u7406\u7684\uff0c\u91cd\u542f\u7cfb\u7edf\uff1a<\/p>\n\n\n\n

1<\/td>[root@localhost ~]<\/code> # ipmitool power reset<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

\u8fd0\u884c\u5b8c\u6210\u540e\u4e3b\u673a\u5c31\u4f1a\u9a6c\u4e0a\u91cd\u542f\uff0c\u76f8\u5e94\u7684\u5173\u95ed\u4e3b\u673a\u53ef\u4ee5\u8fd0\u884c\u547d\u4ee4\uff1a<\/p>\n\n\n\n

1<\/td>[root@localhost ~]<\/code> # ipmitool power off<\/code><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

ipmitool<\/code> \u8fd8\u53ef\u4ee5\u5b9e\u73b0\u5728\u7cfb\u7edf\u672a\u542f\u52a8\u65f6\u8fdc\u7a0b\u67e5\u770b\u76d1\u63a7\u4e3b\u677f\u786c\u4ef6\u72b6\u6001\u7b49\u529f\u80fd\uff0c\u5728 IPMI \u53ef\u7528\u7684\u60c5\u51b5\u4e0b ipmitool<\/code> \u8fd8\u662f\u6bd4\u8f83\u65b9\u4fbf\u597d\u7528\u7684\u3002<\/p>\n\n\n\n

\u6587\u7ae0\u6765\u6e90:https:\/\/blog.csdn.net\/weixin_34023982\/article\/details\/85983653<\/p>\n<\/blockquote>\n","protected":false},"excerpt":{"rendered":"

\u5b9e\u9645\u751f\u4ea7\u73af\u5883\u4e2d\u67d0\u4e9b\u60c5\u51b5\u4e0b Linux \u670d\u52a1\u5668\u7cfb\u7edf\u5728\u51fa\u73b0\u81f4\u547d\u9519\u8bef\u9700\u8981\u8fdc\u7a0b\u8fdb\u884c\u91cd\u542f\uff0c\u901a\u8fc7\u5e38\u89c4\u7684 rebo […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3],"tags":[],"_links":{"self":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/3297"}],"collection":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3297"}],"version-history":[{"count":1,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/3297\/revisions"}],"predecessor-version":[{"id":3298,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=\/wp\/v2\/posts\/3297\/revisions\/3298"}],"wp:attachment":[{"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3297"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3297"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wjxy.net.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3297"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}