linux怎么向校时服务器校时 linux 如何获取ntp服务器时间
linux\u600e\u6837\u81ea\u52a8\u6821\u6b63\u65f6\u95f4\uff1flinux\u53ef\u4ee5\u901a\u8fc7\u547d\u4ee4\u53bb\u53d6\u4e16\u754c\u65f6\u95f4\uff0c\u547d\u4ee4\u683c\u5f0f\u5982\u4e0bntpdate -s time.windows.com\u524d\u63d0\u662f\u9700\u8981\u8be5linux\u80fd\u591f\u4e0a\u7f51\uff0c\u9700\u8981\u81ea\u52a8\u66f4\u65b0\u7684\u8bdd\uff0c\u52a0\u5165\u7cfb\u7edf\u8ba1\u5212\u4efb\u52a1\u5373\u53ef\u3002\u6309\u7167\u4f60\u9700\u8981\u7684\u6bcf\u5c0f\u65f6\u6216\u8005\u6bcf\u5206\u949f\u53bb\u6821\u51c6\u5373\u53ef\u3002\u82e5\u5728\u5185\u7f51\uff0c\u4f60\u53ef\u4ee5\u81ea\u5df1\u642d\u5efa\u4e00\u4e2a\u65f6\u95f4\u670d\u52a1\u5668\uff0c\u6709windows\u7684\uff0c\u4e5f\u6709linux\u7684\u3002\u8fd9\u91cc\u5c31\u4e0d\u518d\u8bf4\u4e86\u3002
\u6267\u884cntpdate xxx.xxx.xxx.xxx(ntp\u670d\u52a1\u5668\u5730\u5740)\u3002
Linux\u4e0b\u914d\u7f6eNTP\u670d\u52a1\u5668
\u914d\u7f6e\u65b9\u6cd5\uff1a
1\u3001ntp\u670d\u52a1\u5b89\u88c5
NTP\u670d\u52a1\u5728RHEL5.x\u4e2d\u5f0f\u9ed8\u8ba4\u5b89\u88c5\u7684\u8f6f\u4ef6\u5305\uff0c\u53ef\u7528rpm -qa |grep
ntp\u68c0\u67e5\u662f\u5426\u5b89\u88c5\uff0c\u5982\u679c\u672a\u5b89\u88c5\u53ef\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4\u5b89\u88c5\u4e0e\u5220\u9664NTP\u670d\u52a1\u5668\u8f6f\u4ef6\u5305
#\u4f7f\u7528rpm\u65b9\u5f0f\u5b89\u88c5
rpm -ivh ntp-4.2.2p1-8.el5.i386.rmp
#\u4f7f\u7528yum\u65b9\u5f0f\u5b89\u88c5
yum -y install ntp.i*
#\u4f7f\u7528rpm\u65b9\u5f0f\u5220\u9664
rpm -e ntp-4.2.2pl-8.el5.i386.rpm
#\u4f7f\u7528yum\u65b9\u5f0f\u5220\u9664
yum -y remove ntp.i*
2\u3001ntp\u670d\u52a1\u914d\u7f6e
\u5728ntp\u670d\u52a1\u5b89\u88c5\u5b8c\u6210\u540e\uff0c\u9700\u8981\u4fee\u6539ntp\u670d\u52a1\u914d\u7f6e\u6587\u4ef6\u3002ntp\u670d\u52a1\u4e3b\u914d\u7f6e\u6587\u4ef6/etc/ntp.conf
2.1 ntp\u670d\u52a1\u7684\u542f\u52a8\u3001\u6682\u505c
NTP\u5c5e\u4e8esystem
V\u670d\u52a1\uff0c\u5176\u542f\u52a8\u3001\u6682\u505c\u76f8\u5173\u547d\u4ee4\u5982\u4e0b\uff1a
#\u542f\u52a8
service ntpd
start
#\u505c\u6b62
Service ntpd
stop
#\u91cd\u65b0\u52a0\u8f7d
service ntpd
reload
#\u67e5\u770b\u5f53\u524d\u542f\u52a8\u72b6\u6001
service ntpd
status
2.2 ntp\u670d\u52a1\u81ea\u52a8\u52a0\u8f7d
\u8bbe\u7f6entp\u670d\u52a1\u4e0b\u4e00\u6b21\u5f00\u673a\u8fd0\u884c\u72b6\u6001\u53ef\u901a\u8fc7\u547d\u4ee4\u914d\u7f6e
#\u5728\u8fd0\u884c\u7ea7\u522b2\u30013\u30014\u30015\u4e0a\u8bbe\u7f6e\u4e3a\u81ea\u52a8\u8fd0\u884c
chkconfig
ntpd on
#\u5728\u8fd0\u884c\u7ea7\u522b2\u30013\u30014\u30015\u4e0a\u8bbe\u7f6e\u4e3a\u4e0d\u81ea\u52a8\u8fd0\u884c
chkconfig
ntpd off
#\u5728\u8fd0\u884c\u7ea7\u522b3\u30015\u4e0a\u8bbe\u7f6e\u4e3a\u81ea\u52a8\u8fd0\u884c
chkconfig
ntpd --level 35 on
#\u5728\u8fd0\u884c\u7ea7\u522b3\u30015\u4e0a\u8bbe\u7f6e\u4e3a\u4e0d\u81ea\u52a8\u8fd0\u884c
chkconfig
ntpd --level 35 off
2.3 \u914d\u7f6e\u4fe1\u606f
\u914d\u7f6entp\uff0c\u5c06Internet\u4e0a\u7684\u65f6\u95f4\u670d\u52a1\u5668\u4f5c\u4e3a\u5185\u90e8\u6807\u51c6\u65f6\u95f4\u6765\u6e90\uff0c\u8fc7\u7a0b\u5982\u4e0b
1\uff09\u4fee\u6539/etc/ntp.conf\u6587\u4ef6
restrict default kod nomodify notrap nopeer noquery
restrict 127.0.0.1
restrict -6::1
restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap
restrict 192.168.1.0 mask 255.255.255.0 nomodify notrap
#\u6307\u5b9aInternet\u4e0a\u7684\u65f6\u95f4\u670d\u52a1\u5668
restrict 207.46.232.182 mask 255.255.255.255 nomodify notrap noquery
server 207.46.232.182
server 127.127.1.0
fudge 127.127.1.0 stratum 10
keys /etc/ntp/keys
#\u6307\u5b9aNTP\u670d\u52a1\u5668\u65e5\u5fd7\u6587\u4ef6
logfile /var/log/ntp
2\uff09\u4fee\u6539/etc/ntp/stpe-tickers\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff08\u5f53ntpd\u670d\u52a1\u542f\u52a8\u65f6\uff0c\u4f1a\u81ea\u52a8\u4e0e\u8be5\u6587\u4ef6\u4e2d\u8bb0\u5f55\u7684\u4e0a\u5c42NTP\u670d\u52a1\u8fdb\u884c\u65f6\u95f4\u6821\u5bf9\uff09
207.46.232.182
127.127.1.0
3\uff09\u4fee\u6539/etc/sysconfig/ntpd\u6587\u4ef6\uff0c\u5185\u5bb9\u5982\u4e0b\uff1a
#\u5141\u8bb8BIOS\u4e0e\u7cfb\u7edf\u65f6\u95f4\u540c\u6b65\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7hwclock -w \u547d\u4ee4
SYNC_HWCLOCK=yes
4\uff09\u5728\u914d\u7f6e\u5b8c\u6210\u5e76\u91cd\u65b0\u542f\u52a8\u670d\u52a1\u540e\uff0c\u53ef\u901a\u8fc7ntpstat
\u547d\u4ee4\u663e\u793a\u672c\u673a\u4e0a\u4e00\u6b21\u4e0e\u4e0a\u5c42ntp\u670d\u52a1\u5668\u540c\u6b65\u65f6\u95f4\u7684\u60c5\u51b5\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528ntpq -p \u67e5\u770b\u672c\u673a\u4e0e\u4e0a\u5c42ntp\u670d\u52a1\u5668\u901a\u4fe1\u60c5\u51b5\uff0c
2.4 \u56fe\u5f62\u754c\u9762\u914d\u7f6eNTP
\u56fe\u5f62\u754c\u9762\u4e0b\u76f4\u63a5\u7528system-config-date, \u5728\u201cNetwork Time Protocol\u201d\u9009\u9879\u9875\u6307\u5b9aNTP\u670d\u52a1\u5668\u540e\u52fe\u9009\u201cSynchronize system clock before startingservice\u201d\uff0c\u5c06ntpd\u670d\u52a1\u8bbe\u7f6e\u4e3a\u81ea\u52a8\u8fd0\u884c\u5373\u53ef\u3002
2.5 \u5ba2\u6237\u7aef\u8bbf\u95ee
1\uff09Linux\u5ba2\u6237\u7aef\u53ef\u901a\u8fc7\u56fe\u5f62\u754c\u9762\u8fdb\u884c\u914d\u7f6e\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7ntpdate\u547d\u4ee4\u7acb\u5373\u4e0eNTP\u670d\u52a1\u5668\u53ca\u884c\u65f6\u95f4\u6821\u5bf9\u3002
ntpdate 192.168.0.10
2\uff09Windows\u5ba2\u6237\u7aef\uff0c\u53ea\u9700\u53cc\u51fb\u4efb\u52a1\u680f\u53f3\u4e0b\u89d2\u7684\u65f6\u949f\uff0c\u9009\u62e9\u201cInternet\u65f6\u95f4\u201d\u9009\u9879\u9875\uff0c\u8f93\u5165NTP\u670d\u52a1IP\u5730\u5740\u6216FQDN\uff0c\u5e76\u52fe\u9009\u201c\u81ea\u52a8\u4e0eInternet\u65f6\u95f4\u670d\u52a1\u5668\u540c\u6b65\u201d\u5373\u53ef\u3002
Windows\u9ed8\u8ba47\u5929\u81ea\u52a8\u66f4\u65b0\u4e00\u6b21\uff0c\u53ef\u901a\u8fc7\u4fee\u6539\u6ce8\u518c\u8868HKEY_LOCAL_MACHINE\SYSTEM
\CurrentControlSet\services\W32Time\TimeProviders\NtpClient\SpecialPollInterval \u9ed8\u8ba4\u5355\u4f4d\u4e3a\u5999\uff0c\u4fee\u6539\u540e\u91cd\u65b0\u542f\u52a8\u5373\u53ef\u751f\u6548\u3002
首先安装NTP：
yum install -y ntpdate
然后执行NTP命令：
ntpdate time.windows.com
或者：
ntpdate cn.pool.ntp.org
想要偷懒，让机器自动校准时间的话，只需要将命令加入到cron就可以了。
crontab -e2 * */1 * * * /sbin/ntpdate cn.pool.ntp.org #每隔一个小时同步一次
保存退出即可。 《Linux就该这么学》一起学习
绛旓細鍏堢湅鐪媍rontab -l 閲屾湁娌℃湁鑷姩鏍℃鐨勮鍙 锛屽鏋滄湁缁欐敞閲婃帀 濡傛灉娌℃湁鎶妌tpd鏈嶅姟涔熷叧浜嗐傚啀鐪嬫椂闂磋繕鍙樹笉鍙
绛旓細濡傛灉鏄linux绯荤粺鏍℃椂鐨勮瘽锛歯tpdate 鏃堕棿鏈嶅姟鍣 hwclock -w 灏卞彲浠ヤ簡銆
绛旓細linux涓瀹氭椂鏇存柊鏃ユ湡闇瑕佺敤鍒發inux鑷甫鐨勫畾鏃朵换鍔ron1銆佹墦寮鏂囦欢,缂栬緫瀹氭椂浠诲姟crontab -e 杈撳叆: 0 */1 * * * ntpdate 鏃堕棿鏈嶅姟鍣 (鍏朵腑鍓嶉潰鐨勫嚑涓瓧绗﹁〃绀, 姣忛殧涓涓皬鏃跺悓姝ヤ竴娆℃椂闂存湇鍔″櫒鐨勬椂闂)淇濆瓨2銆佹煡鐪嬪畾鏃朵换鍔rontab -l3銆佸惎鍔ㄥ畾鏃朵换鍔ervice crond start 鏈洖绛旂敱鐢佃剳缃戠粶鍒嗙被杈句汉 钁ｈ緣鎺ㄨ崘 涓炬姤| ...
绛旓細瑙ｅ喅鏂规:鍦linux 涓婇厤缃甆TP 鏃堕棿鍚屾锛屽叿浼戞搷浣滄楠わ紝鏁寸悊濡備笅锛1. 瀹夎杞欢鍖咃紙鍦ㄦ湇鍔＄鍜屽鎴风锛夛細yum install ntp 2. 鏈嶅姟鍣绔厤缃 渚嬪锛氶鍏堬紝鏈嶅姟绔瀹欼P鍦板潃涓猴細192.168.146.110 淇敼ntp閰嶇疆鏂囦欢 vim /etc/ntp.conf server 0.redhat.pool.ntp.org //璁惧畾涓婄骇鏈嶅姟鍣 restrict 192.168....
绛旓細濡傛灉鏈嶅姟鍣鐨勬椂闂村嚭鐜版贩涔憋紝灏嗗鑷村緢澶氭剰鎯充笉鍒扮殑闂銆備娇鐢∟TP锛屽彲浠ヤ娇鏈嶅姟鍣ㄨ幏鍙栨纭殑鏃堕棿锛屼粠鑰岄伩鍏嶅嚭鐜伴棶棰樸侼TP鏄疦etwork Time Protocol鐨勭畝鍐欙紝鎰忎负鈥滅綉缁滄椂闂村崗璁濓紝鏄竴涓敤TCP/IP鍗忚瀹炵幇鐨勬椂闂村悓姝ュ崗璁俇buntu鍦ㄦ瘡娆″惎鍔ㄩ兘浼氳嚜鍔ㄥ埌ntp.ubuntu .com鍘诲仛鏃堕棿鍚屾銆備絾鏄紝鐢变簬鏈嶅姟鍣ㄤ竴鑸笉浼氶绻...
绛旓細瑙ｇ瓟濡備笅锛屼互Centos涓轰緥锛1,淇鏈湴鏃跺尯鍙妌tp鏈嶅姟 yum -y install ntp#rm -rf /etc/localtime#ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime#/usr/sbin/ntpdate -u pool.ntp.org2,鑷姩鍚屾鏃堕棿 娣诲姞涓嬮潰涓娈 琛ㄧず姣10鍒嗛挓鍚屾涓娆 crontab -e */10 * * * * /usr/sbin/...
绛旓細restrict 192.168.0.0 mask 255.255.0.0 nomodify //璇ョ綉娈靛彲浠ヨ繘琛鏍℃椂 restrict 0.0.0.0 mask 0.0.0.0 notrust //鎷掔粷娌℃湁璁よ瘉鐨勭敤鎴风 server time-nw.nist.gov prefer //prefer 璇鏈嶅姟鍣浼樺厛 server 0.rhel.pool.ntp.org server 1.rhel.pool.ntp.org server 2.rhel.pool...
绛旓細鍥犱负浣犳病鏈夊惎鍔╪tpd鏈嶅姟 鐩存帴鎵ц鐨勮瘽锛屽簲璇ユ槸杩欐牱锛氾純/usr/local/bin/ntpd & 鐒跺悗瀹㈡埛绔鏍℃椂搴旇杩欐牱锛氾純./ntpdate ntp.fudan.edu.cn(涓涓椂闂鏈嶅姟鍣)锛堝厛cd鍒皀tpdate鐨勭洰褰)锛嶏紞锛 姣忓ぉ瀹氭椂鏍℃椂锛氫慨鏀筩rontab鏂囦欢锛歝rontab -e 鍔犲叆锛5 * * * * /usr/sbin/ntpdate ntp.fudan.edu.cn 琛...
绛旓細鈶:闄愬埗浣犲厑璁哥殑杩欎簺鏈嶅姟鍣鐨勮闂被鍨,鍦ㄨ繖涓緥瀛愪腑鐨勬湇鍔″櫒鏄笉瀹硅淇敼杩愯鏃堕厤缃垨鏌ヨ鎮ㄧ殑Linux NTP鏈嶅姟鍣 restrict 192.168.0.0 mask 255.255.255.0 notrust nomodify notrap 鍦ㄤ笂渚嬩腑,鎺╃爜鍦板潃鎵╁睍涓255,鍥犳浠192.168.0.1-192.168.0.254鐨勬湇鍔″櫒閮藉彲浠ヤ娇鐢ㄦ垜浠殑NTP鏈嶅姟鍣ㄦ潵鍚屾鏃堕棿 #姝ゆ椂琛ㄧず闄愬埗鍚戜粠192.168....
绛旓細2.Ntpd鍚姩鐨勬椂鍊欓氬父闇瑕佷竴娈垫椂闂磋繘琛屾椂闂村悓姝,鎵浠ュ湪ntpd鍒氬垰鍚姩鐨勬椂鍊欒繕涓嶈兘姝ｅ父鎻愪緵鏃堕挓鏈嶅姟,鏈闀垮ぇ姒傛湁5鍒嗛挓鍚,濡傛灉瓒呰繃浜嗚繖涓椂闂磋妫鏌ヤ竴涓嬫偍鐨勯厤缃枃浠躲 鍏丯TP瀹㈡埛绔殑浣跨敤 Linux绯荤粺 鍦↙inux 涓婇潰杩涜缃戠粶鏍℃椂闈炲父绠鍗,鎵ц ntpdate 鍗冲彲: ntpdate 192.168.0.1 #192.168.0.1鏄疦TP鏈嶅姟鍣鐨処P 涓嶈蹇樹簡...
