{"id":472,"date":"2015-10-23T15:17:02","date_gmt":"2015-10-23T15:17:02","guid":{"rendered":"http:\/\/ef575e8837d065a1683c022d2077d342"},"modified":"2019-12-18T18:47:17","modified_gmt":"2019-12-18T10:47:17","slug":"ntp","status":"publish","type":"post","link":"https:\/\/www.xiaobo.li\/notes\/archives\/472","title":{"rendered":"ntp"},"content":{"rendered":"<p>1. yum install ntp -y<\/p>\n<p>2. <a href=\"http:\/\/www.pool.ntp.org\">http:\/\/www.pool.ntp.org<\/a>\u662fNTP\u7684\u5b98\u65b9\u7f51\u7ad9,\u5728\u8fd9\u4e0a\u9762\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u79bb\u6211\u4eec\u57ce\u5e02\u6700\u8fd1\u7684NTP Server. NTP\u5efa\u8bae\u6211\u4eec\u4e3a\u4e86\u4fdd\u969c\u65f6\u95f4\u7684\u51c6\u786e\u6027,\u6700\u5c11\u627e\u4e24\u4e2a\u4e2aNTP Server<br \/>\n\u90a3\u4e48\u6bd4\u5982\u5728\u82f1\u56fd\u7684\u8bdd\u5c31\u53ef\u4ee5\u9009\u62e9\u4e0b\u9762\u4e24\u4e2a\u670d\u52a1\u5668<br \/>\n0.uk.pool.ntp.org<br \/>\n1.uk.pool.ntp.org<\/p>\n<p><strong>Asia\/\u4e9a\u6d32 \u2014 asia.pool.ntp.org<\/strong><\/p>\n<p>To use this specific pool zone, add the following to your ntp.conf file:<\/p>\n<p>server 0.asia.pool.ntp.org<br \/>\nserver 1.asia.pool.ntp.org<br \/>\nserver 2.asia.pool.ntp.org<br \/>\nserver 3.asia.pool.ntp.org<\/p>\n<p><strong>China\/\u4e2d\u56fd \u2014 cn.pool.ntp.org<\/strong><\/p>\n<p>To use this specific pool zone, add the following to your ntp.conf file:<\/p>\n<p>server 0.cn.pool.ntp.org<br \/>\nserver 1.cn.pool.ntp.org<br \/>\nserver 2.cn.pool.ntp.org<br \/>\nserver 3.cn.pool.ntp.org<\/p>\n<p>\u5b83\u7684\u4e00\u822c\u683c\u5f0f\u90fd\u662fnumber.country.pool.ntp.org<\/p>\n<p>\u7b2c\u4e8c\u6b65\u8981\u505a\u7684\u5c31\u662f\u5728\u6253\u5f00NTP\u670d\u52a1\u5668\u4e4b\u524d\u5148\u548c\u8fd9\u4e9b\u670d\u52a1\u5668\u505a\u4e00\u4e2a\u540c\u6b65,\u4f7f\u5f97\u6211\u4eec\u673a\u5668\u7684\u65f6\u95f4\u5c3d\u91cf\u63a5\u8fd1\u6807\u51c6\u65f6\u95f4.<br \/>\n\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u7528ntpdate\u547d\u4ee4\u624b\u52a8\u66f4\u65b0\u65f6\u95f4<br \/>\n\u4ee3\u7801:<br \/>\n<span style=\"color: #c0c0c0;\"><span style=\"background-color: #000000;\"># ntpdate 0.uk.pool.ntp.org<br \/>\n6 Jul 01:21:49 ntpdate[4528]: step time server 213.222.193.35 offset -38908.575181 sec<br \/>\n# ntpdate 0.pool.ntp.org<br \/>\n6 Jul 01:21:56 ntpdate[4530]: adjust time server 213.222.193.35 offset -0.000065 sec<br \/>\n<\/span><\/span><\/p>\n<p>\u5047\u5982\u4f60\u7684\u65f6\u95f4\u5dee\u7684\u5f88\u79bb\u8c31\u7684\u8bdd\u7b2c\u4e00\u6b21\u4f1a\u770b\u5230\u8c03\u6574\u7684\u5e45\u5ea6\u6bd4\u8f83\u5927,\u6240\u4ee5\u4fdd\u9669\u8d77\u89c1\u53ef\u4ee5\u8fd0\u884c\u4e24\u6b21<\/p>\n<p>3. \u914d\u7f6e\u548c\u8fd0\u884cNTP Server<\/p>\n<p>\u73b0\u5728\u6211\u4eec\u5c31\u6765\u521b\u5efaNTP\u7684\u914d\u7f6e\u6587\u4ef6\u4e86, \u5b83\u5c31\u662f<strong>\/etc\/ntp.conf<\/strong>. \u6211\u4eec\u53ea\u9700\u8981\u52a0\u5165\u4e0a\u9762\u7684NTP Server\u548c\u4e00\u4e2adriftfile\u5c31\u53ef\u4ee5\u4e86<br \/>\n\u4ee3\u7801:<br \/>\n<span style=\"color: #c0c0c0;\"><span style=\"background-color: #000000;\"># vi \/etc\/ntp.conf<br \/>\nserver 0.uk.pool.ntp.org<br \/>\nserver 1.uk.pool.ntp.org<br \/>\n<\/span><\/span><span style=\"background-color: #000000;\"><span style=\"color: #c0c0c0;\"><br \/>\nfudge\u00a0127.127.1.0 stratum 0\u00a0 stratum<\/span>\u00a0<\/span> \u8fd9\u884c\u662f\u65f6\u95f4\u670d\u52a1\u5668\u7684\u5c42\u6b21\u3002\u8bbe\u4e3a0\u5219\u4e3a\u9876\u7ea7\uff0c\u5982\u679c\u8981\u5411\u522b\u7684NTP\u670d\u52a1\u5668\u66f4\u65b0\u65f6\u95f4\uff0c\u8bf7\u4e0d\u8981\u628a\u5b83\u8bbe\u4e3a0<\/p>\n<p><strong>driftfile \/var\/lib\/ntp\/ntp.drift<\/strong>\u00a0 \u975e\u5e38\u7684\u7b80\u5355. \u63a5\u4e0b\u6765\u6211\u4eec\u5c31\u542f\u52a8NTP Server,\u5e76\u4e14\u8bbe\u7f6e\u5176\u5728\u5f00\u673a\u540e\u81ea\u52a8\u8fd0\u884c<br \/>\n\u4ee3\u7801:<br \/>\n<span style=\"color: #c0c0c0;\"><span style=\"background-color: #000000;\"># \/etc\/init.d\/ntpd start<br \/>\n<\/span><\/span><\/p>\n<p><span style=\"color: #c0c0c0;\"><span style=\"background-color: #000000;\"> # chkconfig --level 35 ntpd on<\/span><\/span><\/p>\n<p>&nbsp;<\/p>\n<p>------------------------------------<\/p>\n<p>ntp tools:<\/p>\n<p>#ntpstat<br \/>\n<strong>synchronised to NTP server (18.18.220.186) at stratum 3<\/strong><br \/>\ntime correct to within 183 ms<br \/>\npolling server every 128 s<\/p>\n<p>\u5df2\u8fde\u63a5\u540c\u6b65\u670d\u52a1\u5668<\/p>\n<p># ntpstat<br \/>\nunsynchronised<br \/>\ntime server re-starting<br \/>\npolling server every 64 s<\/p>\n<p>\u672a\u8fde\u63a5\u540c\u6b65\u670d\u52a1\u5668<\/p>\n<p># ntpq -p<br \/>\nremote refid st t when poll reach delay offset jitter<br \/>\n==============================================================================<br \/>\n192.168.7.49 192.168.7.50 5 u 13 64 3 5.853 1137178 2.696<\/p>\n<p>remote - \u672c\u673a\u548c\u4e0a\u5c42ntp\u7684ip\u6216\u4e3b\u673a\u540d\uff0c\u201c+\u201d\u8868\u793a\u4f18\u5148\uff0c\u201c*\u201d\u8868\u793a\u6b21\u4f18\u5148<br \/>\nrefid - \u53c2\u8003\u4e0a\u4e00\u5c42ntp\u4e3b\u673a\u5730\u5740<br \/>\nst - stratum\u9636\u5c42<br \/>\nwhen - \u591a\u5c11\u79d2\u524d\u66fe\u7ecf\u540c\u6b65\u8fc7\u65f6\u95f4<br \/>\npoll - \u4e0b\u6b21\u66f4\u65b0\u5728\u591a\u5c11\u79d2\u540e<br \/>\nreach - \u5df2\u7ecf\u5411\u4e0a\u5c42ntp\u670d\u52a1\u5668\u8981\u6c42\u66f4\u65b0\u7684\u6b21\u6570<br \/>\ndelay - \u7f51\u7edc\u5ef6\u8fdf<br \/>\noffset - \u65f6\u95f4\u8865\u507f<br \/>\njitter - \u7cfb\u7edf\u65f6\u95f4\u4e0ebios\u65f6\u95f4\u5dee<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<p>----------------------------------------<\/p>\n<p>&nbsp;<\/p>\n<p>4. chronyd<\/p>\n<p>\u4e00\u4e9blinux\u7248\u672c\uff0c\u9ed8\u8ba4\u53ef\u80fd\u5b89\u88c5 chronyd \u505a\u4e3aNTP \u65f6\u949f\u540c\u6b65\u670d\u52a1\u3002<\/p>\n<p>&nbsp;<\/p>\n<p>\u53c2\u8003\u6765\u6e90\uff1a<\/p>\n<p><span style=\"color: #c0c0c0;\"><span style=\"background-color: #000000;\">http:\/\/blog.csdn.net\/iloli\/article\/details\/6431757<br \/>\n<\/span><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>1. yum install ntp -y<\/p>\n<p>2. <a href=\"http:\/\/www.pool.ntp.org\">http:\/\/www.pool.ntp.org<\/a>\u662fNTP\u7684\u5b98\u65b9\u7f51\u7ad9,\u5728\u8fd9\u4e0a\u9762\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u79bb\u6211\u4eec\u57ce\u5e02\u6700\u8fd1\u7684NTP Server. NTP\u5efa\u8bae\u6211\u4eec\u4e3a\u4e86\u4fdd\u969c\u65f6\u95f4\u7684\u51c6\u786e\u6027,\u6700\u5c11\u627e\u4e24\u4e2a\u4e2aNTP Server<br \/>\n\u90a3\u4e48\u6bd4\u5982\u5728\u82f1\u56fd\u7684\u8bdd\u5c31\u53ef\u4ee5\u9009\u62e9\u4e0b\u9762\u4e24\u4e2a\u670d\u52a1\u5668<br \/>\n0.uk.pool.ntp.org<br \/>\n1.uk.pool.ntp.org<\/p>\n<p>\u5b83\u7684\u4e00\u822c\u683c\u5f0f\u90fd\u662fnumber.country.pool.ntp.org<\/p>\n<p>\u7b2c\u4e8c\u6b65\u8981\u505a\u7684\u5c31\u662f\u5728\u6253\u5f00NTP\u670d\u52a1\u5668\u4e4b\u524d\u5148\u548c\u8fd9\u4e9b\u670d\u52a1\u5668\u505a\u4e00\u4e2a\u540c\u6b65,\u4f7f\u5f97\u6211\u4eec\u673a\u5668\u7684\u65f6\u95f4\u5c3d\u91cf\u63a5\u8fd1\u6807\u51c6\u65f6\u95f4. <br \/>\n\u8fd9\u91cc\u6211\u4eec\u53ef\u4ee5\u7528ntpdate\u547d\u4ee4\u624b\u52a8\u66f4\u65b0\u65f6\u95f4<br \/>\n\u4ee3\u7801:<br \/><span style=\"color:#c0c0c0;\"><span style=\"background-color:#000000;\">#...<\/span><\/span> <a href=\"https:\/\/www.xiaobo.li\/notes\/archives\/472\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[287],"tags":[],"class_list":["post-472","post","type-post","status-publish","format-standard","hentry","category-linux"],"_links":{"self":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/472","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/comments?post=472"}],"version-history":[{"count":0,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/posts\/472\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/media?parent=472"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/categories?post=472"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xiaobo.li\/notes\/wp-json\/wp\/v2\/tags?post=472"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}