[B! ntp] sfujiwaraã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯

sfujiwara id:sfujiwara

ntpã«é–¢ã™ã‚‹sfujiwaraã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (8)

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googleã®æ–°ã—ã„æ™‚åˆ»åŒæœŸãƒ—ãƒãƒˆã‚³ãƒ« Roughtimeã¨ã¯ - ASnoKaze blog
[è¿½è¨˜] 2020å¹´1æœˆæ™‚ç‚¹ã®å‹•å‘ã«ã¤ã„ã¦ã€æ–°ã—ãè¨˜äº‹ã‚’æ›¸ãã¾ã—ãŸ asnokaze.hatena blog.com Googleã®ã€ŒAdam Langleyæ°ã®ãƒ–ãƒã‚°ã€ã§ã€æ–°ã—ã„æ™‚åˆ»åŒæœŸãƒ—ãƒãƒˆã‚³ãƒ«ã«ã¤ã„ã¦ç´¹ä»‹ã•ã‚Œã¦ã„ã‚‹ã€‚ã“ã®Roughtimeã¯ç‰¹å®šã®ã‚¿ã‚¤ãƒ ã‚µãƒ¼ãƒã«ä¾å˜ã—ãªã„ã‚»ã‚ãƒ¥ã‚¢ãªæ–¹æ³•ã§æ™‚åˆ»åŒæœŸã‚’è¡Œã†ã“ã¨ã‚’ç›®çš„ã¨ã—ãŸãƒ—ãƒãƒˆã‚³ãƒ«ã§ã™ã€‚ã™ã§ã«ã€googleã®ã‚µãƒ¼ãƒã§å‹•ä½œã—ã¦ãŠã‚Šã€roughtime.sandbox.google.com:2002ã«å‘ã‘ã¦å…¬é–‹ã•ã‚Œã¦ã„ã‚‹å°‚ç”¨ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã§æŽ¥ç¶šã§ãã‚‹ã€‚ ç¾åœ¨ã®ã‚»ã‚ãƒ¥ãƒªãƒ†ã‚£ã¯ç¾åœ¨ã®æ™‚åˆ»ã«ä¾å˜ã—ã¦ãŠã‚Šã€ãã®é‡è¦æ€§ã¯ã¾ã—ã¦ã„ã¾ã™ã€‚è¨¼æ˜Žæ›¸ã®æœ‰åŠ¹æœŸé™ã‚„ã€OCSPãƒ¬ã‚¹ãƒãƒ³ã‚¹ã€Kerberosã®ãƒã‚±ãƒƒãƒˆã€DNSSECã®å¿œç”¨ã‚„PGPéµã¨ã„ã£ãŸæ©Ÿèƒ½ã§ã‚‚é‡è¦ã§ã™ã€‚ã—ã‹ã—ã€Chromeã®è¨¼æ˜Žæ›¸ã‚¨ãƒ©ãƒ¼ã®ã†ã¡25%ã¯ãƒãƒ¼ã‚«ãƒ«ã®æ™‚åˆ»ã«èµ·å› ã™ã‚‹ã¨ã—ã¦ã„ã‚‹ã¨ã—ã¦ã„ã¾ã™ã€‚ ç¾åœ¨ã€æœ€
sfujiwara 2016/10/12
ntp

Roughtime

Google
ãƒªãƒ³ã‚¯
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NTP 2007 4 13 â€¢ â€¢ Y . . â€¢ â€¢ i 1 3 1.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1.2.1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 1.2.2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.3 TAI UTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
sfujiwara 2015/06/24
ntp
ãƒªãƒ³ã‚¯
æ–°ã—ã„NTPã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆï¼†ã‚µãƒ¼ãƒã€chrony - Qiita
ã¯ã˜ã‚ã« CentOS 7ã§"æœ€å°é™ã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«"ä»¥å¤–ã‚’é¸ã‚“ã å ´åˆã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã•ã‚Œã‚‹chronyã¯ntpdã«ä»£ã‚ã‚Šæ¨™æº–ã¨ãªã£ãŸNTPã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆå…¼ã‚µãƒ¼ãƒã§ã‚ã‚‹ã€‚ ã¨ã¯ã„ãˆã€CentOS 7ã§ã‚‚ç›¸å¤‰ã‚ã‚‰ãšntpdã¯ä½¿ç”¨ã§ãã‚‹ã—ã€ntpdateã®ä»£ã‚ã‚Šã§ã¯ãªã„ã®ã§ntpdateã‚³ãƒžãƒ³ãƒ‰ã‚’æ‰“ã¡ãŸã‘ã‚Œã°ntpdateã‚’ä½¿ç”¨ã™ã‚‹ã€‚ ä»¥ä¸‹ã€åˆæœŸç¨¿ã§ã¯chronyã®ã€ntpdã¨ã®é•ã„ã‚’ä¸å¿ƒã«è¨˜è¿°ã™ã‚‹ã€‚æ³¨ç›®ç‚¹ãŒã‚ã‚Œã°ãã‚Œã‚‚æ›¸ããŒã€ã¾ã¨ã‚‚ã«è¿½ã£ã¦ã„ãã¨æ·±ã„ã®ã§ã€å¾Œã§æ°—ã«ãªã‚‹ç‚¹ãŒå¢—ãˆãŸã‚‰è¿½è¨˜ã™ã‚‹å½¢ã‚’å–ã‚‹ã€‚ ã‚ã¨ã€ã“ã®è¨˜äº‹ã§ãƒã‚¿ã«ã™ã‚‹ã®ã¯chronyã§ã‚ã£ã¦cronieã§ã¯ãªã„ã®ã§æ‚ªã—ã‹ã‚‰ãšã€‚ chronyã®ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã¨èµ·å‹• CentOS 7ã§ã¯OSã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«æ™‚ã«ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã•ã‚Œã¦ã„ãªã‘ã‚Œã°yum install chronyã§ã‚¤ãƒ³ã‚¹ãƒˆãƒ¼ãƒ«ã™ã‚‹ã“ã¨ãŒã§ãã‚‹ï¼ˆCentOS 6ã§ã‚‚6.8ã‹ã‚‰OSæ¨™æº–ã®ãƒªãƒã‚¸
sfujiwara 2014/08/14
ntp
ãƒªãƒ³ã‚¯
OPEN NTP Project
General statistics are available via this graph Search my IP space (eg: 192.0.2.0/24 - searches "larger" than /22 will be rejected): If you are a member of the general public: How can I check my server? - run the command ntpdc -n -c monlist 192.0.2.1 or ntpq -c rv 192.0.2.1 - If you see a response, your server may be used in attacks. How can I fix my server, router or other device? You should upgr
sfujiwara 2014/02/13
ntp
ãƒªãƒ³ã‚¯
2012 å¹´ 7 æœˆ 1 æ—¥ã®ã†ã‚‹ã†ç§’æŒ¿å…¥æ™‚ã«ç™ºç”Ÿã—ãŸ Linux ã‚«ãƒ¼ãƒãƒ«ã®ä¸å…·åˆã«é–¢ã™ã‚‹æƒ…å ±
æ›´æ–°å±¥æ´ 2012-08-28: URL å…¬é–‹ 2012-08-29: futexã€hrtimerã€MySQL ã®ç™ºç”Ÿæ¡ä»¶ã€NTP SLEW ãƒ¢ãƒ¼ãƒ‰ã«é–¢ã™ã‚‹ @odhrfm ã•ã‚“ã‹ã‚‰ã®æƒ…å ±ã€ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰æ›´æ–°ã€ãã®ä»–ã„ã‚ã„ã‚ç´°ã‹ã„ä¿®æ£ 2012-08-30: å‚è€ƒãƒªãƒ³ã‚¯è¿½åŠ 2012-09-01: LKML ã¾ã¨ã‚ã‚·ãƒ¼ãƒˆã® thread#50 ã‚’è¿½åŠ 2012-09-03: SLES ã‚«ãƒ¼ãƒãƒ«ã®æ›´æ–°æƒ…å ±ã€per-cpu ã«ã¤ã„ã¦ã®è¨˜è¿°ã€blockdiag ã«ã‚ˆã‚‹ãƒ–ãƒãƒƒã‚¯å›³ã‚’è¿½åŠ 2012-09-11: LKML ã¾ã¨ã‚ã‚·ãƒ¼ãƒˆã® thread#52, #53 ã‚’è¿½åŠ 2012-09-12: LKML ã¾ã¨ã‚ã‚·ãƒ¼ãƒˆã® thread#54 ã€œ #58 ã‚’è¿½åŠ ã¯ã˜ã‚ã« æ—¥æœ¬æ™‚é–“ 2012 å¹´ 7 æœˆ 1 æ—¥ 9:00 ã«ã†ã‚‹ã†ç§’ãŒæŒ¿å…¥ã•ã‚Œã¾ã—ãŸãŒã€ãã®éš› Linux ã‚«ãƒ¼ãƒãƒ«ã«èµ·å› ã™ã‚‹ä¸å…·åˆã«ã‚ˆã‚Šã€
sfujiwara 2012/08/29
ntp

linux
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NTPè¨å®š - ã¨ã‚ã‚‹SIerã®æ†‚é¬±
ç’°å¢ƒ RHEL5 ( ntp-4.2.2p1 ) RHEL6 ( ntp-4.2.4p8 ) NTPã¯çµæ§‹å¾®å¦™ãªä¿®æ£ã‚’å…¥ã‚Œã¦ãã‚‹ã®ã§ãƒãƒ¼ã‚¸ãƒ§ãƒ³ãŒç•°ãªã‚‹å ´åˆã¯æ³¨æ„ãŒå¿…è¦ã€‚ manãŒå½“è©²ãƒãƒ¼ã‚¸ãƒ§ãƒ³ã®æƒ…å ±æºã¨ã—ã¦ã¯ã¾ãšå„ªå…ˆã€‚ æœ€è¿‘ã®å¤‰æ›´ RHEL6ã§ã¯RHEL5ã§ /etc/init.d/ntpd ã®ã¿ã§è¡Œã£ã¦ã„ãŸã“ã¨ã‚’ /etc/init.d/ntpdate ã¨ /etc/init.d/ntpd ã«åˆ†é›¢ã—ã¦ã„ã‚‹ã€‚ ntpdèµ·å‹•å‰ã®ntpdateå®Ÿè¡Œã«ã¤ã„ã¦åˆ†é›¢ã—ã¦ã„ã‚‹ã€‚ntpdã‚’ä½¿ã†ã®ã§ã‚ã‚Œã°ntpdateã‚‚åŒæ™‚ã«æœ‰åŠ¹ã«ã™ã‚‹ã¹ã(ntpdateå®Ÿè¡Œã‚’é¿ã‘ãŸã„å ´åˆä»¥å¤–)ã€‚ è¨è¨ˆ ä½•ã‚‚ã‚ˆã‚Šã‚‚å…ˆã« ã€Žå‚è€ƒã€ã«ã‚ã’ãŸå¯Œå£«é€šã®ã€ŽLinuxãƒ¦ãƒ¼ã‚¶ãƒ¼ã‚ºãƒžãƒ‹ãƒ¥ã‚¢ãƒ« RHEL6ç·¨ã€ãŒNTPã®èª¬æ˜Žã¨ã—ã¦è©³ã—ã„ãƒ»ã‚ã‹ã‚Šã‚„ã™ã„ã€‚ã¾ãšã¯ã“ã‚Œã‚’èªã‚€ã€‚ NTPã‚µãƒ¼ãƒã®éšŽå±¤è¨è¨ˆ NTPã‚’ä½¿ã†ç›®çš„ã¯ã€Žæ£ã—ã„æ™‚åˆ»ã®ç¶æŒã€ã¨ã€Žæ™‚åˆ»
sfujiwara 2012/08/26
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ntp
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ã†ã‚‹ã†ç§’ã®Linuxã¸ã®å½±éŸ¿(2012å¹´7æœˆç‰ˆ) - cuspy diary
2012å¹´7æœˆ1æ—¥ 08:59:59 ç§’(JST)ã®å¾Œã«1ç§’ãŒè¿½åŠ ã•ã‚Œã‚‹ã€ã†ã‚‹ã†ç§’ãŒç™ºç”Ÿã—ã¾ ã™ã€‚ ã†ã‚‹ã†ç§’ã«é–¢ã™ã‚‹åŸºæœ¬çš„ãªæƒ…å ±ã¯ä»¥ä¸‹ã®NICTã®ãƒšãƒ¼ã‚¸ã§èª¬æ˜Žã•ã‚Œã¦ã„ã¾ã™ã€‚ ã†ã‚‹ã†ç§’ã®å¯¾å¿œï¼ˆï¼’ï¼ï¼‘ï¼’å¹´ï¼—æœˆå®Ÿæ–½ç‰ˆï¼‰ ã“ã®ã†ã‚‹ã†ç§’ç™ºç”Ÿæ™‚ã«ãŠã‘ã‚‹ã€Linuxä¸Šã®NTPã®å‹•ä½œã«ã¤ã„ã¦æ¤œè¨¼ã—ã¦ã¿ãŸæ‰€ã€ å„ç¨®Linuxãƒ‡ã‚£ã‚¹ãƒˆãƒªãƒ“ãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã«ã‚ˆã£ã¦å‹•ä½œãŒç•°ãªã‚‹äº‹ãŒè§£ã£ãŸã®ã§ã¾ã¨ã‚ ã¦ã¿ã¾ã—ãŸã€‚ æ¤œè¨¼ã¯NICTã§å…¬é–‹ã•ã‚Œã¦ã„ã‚‹ ç°¡æ˜“NTPã‚µãƒ¼ãƒãƒ¼ ã‚’åˆ©ç”¨ã—ã¦ã€LIãƒ•ãƒ©ã‚°ãŒ01ã®ãƒ‘ã‚±ãƒƒãƒˆã‚’å—ã‘å–ã‚‹æ–¹æ³•ã§è¡Œã„ã¾ã—ãŸã€‚ ã†ã‚‹ã†ç§’ç™ºç”Ÿæ™‚ã®æŒ™å‹•ã¨ã—ã¦ä»¥ä¸‹3ç¨®é¡žã®ãƒ‘ã‚¿ãƒ¼ãƒ³ãŒæŒ™ã’ã‚‰ã‚Œã¾ã™ã€‚ kernelã®æ©Ÿèƒ½ã‚’åˆ©ç”¨ã—ã¦æ™‚åˆ»ã®è£œæ£ã‚’è¡Œã† LIãƒ‘ã‚±ãƒƒãƒˆå—ä¿¡æ™‚ã€ntpdã¯ã‚·ã‚¹ãƒ†ãƒ ã‚³ãƒ¼ãƒ«ã® adjtimex(2) ã‚’ç™ºè¡Œã—ã€kernelã®æ©Ÿèƒ½ã‚’åˆ©ç”¨ã—ã¦æ™‚åˆ»ã®èª¿æ•´ã‚’è¡Œã„ã¾ã™ã€‚çµæžœã¨ã—ã¦ã€ ã†ã‚‹ã†ç§’ç™ºç”Ÿæ™‚ã«æ™‚é–“ã®é€†è¡ŒãŒç™ºç”Ÿã—ã¾ã™
sfujiwara 2012/06/05
ntp

linux
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VMwareã®æ™‚åˆ»ã‚ã‚ã› 2008å¹´å†¬ç‰ˆ - SH2ã®æ—¥è¨˜
VMwareã§ã¯Windows ãƒ›ã‚¹ãƒˆä¸Šã®Linuxã‚²ã‚¹ãƒˆã®æ™‚è¨ˆãŒå¤§ãããšã‚Œã‚‹ã¨ã„ã†å•é¡ŒãŒæ˜”ã‹ã‚‰ã‚ã£ã¦ã€èª¿ã¹ã‚‹ã¨ã„ã‚ã„ã‚å›žé¿ç–ãŒè¦‹ã¤ã‹ã‚Šã¾ã™ã€‚ã—ã‹ã—å¤ã„æƒ…å ±ãŒå¤šããªã£ã¦ãã¦ãŠã‚Šã€ä»Šã¨ãªã£ã¦ã¯ã‚ã¾ã‚Šé©åˆ‡ã§ãªã„æ–¹æ³•ã«ãªã£ã¦ã—ã¾ã£ã¦ã„ã‚‹ã‚‚ã®ã‚‚ã‚ã‚Šã¾ã™ã€‚ ãã“ã§ã€2008å¹´å†¬æ™‚ç‚¹ã§ã®æ™‚åˆ»ã‚ã‚ã›æ‰‹æ³•ã«ã¤ã„ã¦ã¾ã¨ã‚ã¦ãŠãã¾ã™ã€‚ç’°å¢ƒã¯ä»¥ä¸‹ã®ã¨ãŠã‚Šã§ã™ã€‚ VMware Server 1.0.8 ç‰©ç†ãƒžã‚·ãƒ³ï¼šCore Duo T2300 (1.66GHz) EISTæœ‰åŠ¹ ãƒ›ã‚¹ãƒˆOSï¼šWindows XP Professional SP3 32bit ã‚²ã‚¹ãƒˆOSï¼šCentOS 5.2 32bitã€ä»®æƒ³CPUæ•° 2 ç›®æ¬¡ã§ã™ã€‚ Windows XPã®SNTPã‚µãƒ¼ãƒã‚’æ§‹æˆã™ã‚‹ VMware Serverã®è¨å®šãƒ•ã‚¡ã‚¤ãƒ«ã‚’ä¿®æ£ã™ã‚‹ ã‚«ãƒ¼ãƒãƒ«å†æ§‹ç¯‰ã¯å¿…è¦ãªã„ CentOS 5.2ã®ã‚«ãƒ¼ãƒãƒ«ãƒ‘ãƒ©ãƒ¡ãƒ¼ã‚¿ã‚’å¤‰æ›´ã™ã‚‹ adjti
sfujiwara 2009/02/09
vmware

ntp
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