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å¤–éƒ¨ã®æ™‚刻サーãƒãƒ¼ã¨åŒæœŸã—ã€ã‚µãƒ¼ãƒãƒ¼ã®æ™‚刻をæ£ç¢ºã«ä¿ã¤ãŸã‚ã«ä½¿ç”¨ã™ã‚‹NTPã§ã™ãŒã€ç’°å¢ƒã«ã‚ˆã£ã¦ã¯ã‚¤ãƒ³ã‚¿ãƒ¼ãƒãƒƒãƒˆã‚’通ã˜ã¦å¤–éƒ¨ã«æŽ¥ç¶šã™ã‚‹ã“ã¨ãŒã§ããªã„ã“ã¨ãŒã‚りã¾ã™ã€‚ãれã§ã‚‚ã€ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯ã«æŽ¥ç¶šã•れã¦ã„るサーãƒãƒ¼ç¾¤ã®æ™‚刻ã¯åŒæœŸãŒã¨ã‚Œã¦ã„ã‚‹å¿…è¦ãŒã‚る時もã‚りã¾ã™ã€‚Webサーãƒãƒ¼ç¾¤ã§ãƒã‚°ã®ã‚¿ã‚¤ãƒ スタンプをã‚ã‚ã›ãŸã„ã¨ããªã©ã€‚
ãã‚“ãªã¨ãã¯ã€ä¸€å°ã‚’ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å†…ã®æ™‚刻サーãƒãƒ¼ã¨ã—ã¦æ‰±ã„ã€ãã®ã‚µãƒ¼ãƒãƒ¼ã®æ™‚刻を他ã®ãƒžã‚·ãƒ³ã®åŸºæº–ã«ã•ã›ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚æ¬¡ã®æ§˜ãªç’°å¢ƒã§æ§‹æˆã—ã¦ã¿ã¾ã™ã€‚
サーãƒãƒ¼A:192.168.0.1
時刻サーãƒãƒ¼
サーãƒãƒ¼B:192.168.0.2
サーãƒãƒ¼C:192.168.0.3
クライアント
ã¾ãšã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã¨ãªã‚‹ã‚µãƒ¼ãƒãƒ¼B/Cã®è¨å®šã‚’見ã¦ã¿ã¾ã™ã€‚
restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap
server 192.168.0.1 minpoll 4 maxpoll 10
ã“れらã®ã‚µãƒ¼ãƒãƒ¼ã®è¨å®šã«ã¤ã„ã¦ã¯ä»Šã¾ã§é€šã‚Šã€æ™‚刻サーãƒãƒ¼ã‚’見ã«è¡Œãè¨å®šã«ã™ã‚‹ã®ã§ç‰¹ã«å•題ãªã„ã¨æ€ã„ã¾ã™ã€‚
時刻サーãƒãƒ¼ã¨ãªã‚‹ã‚µãƒ¼ãƒãƒ¼Aã§ã™ãŒã€åŸºæœ¬çš„ãªè¨å®šãƒ•ã‚¡ã‚¤ãƒ«ã®æ›¸ãæ–¹ã¯ä»Šã¾ã§é€šã‚Šã§ã™ã€‚一ã¤é•ã†ã®ã¯ã€ã“ã®ã‚µãƒ¼ãƒãƒ¼ã¯å¤–部サーãƒãƒ¼ã¨åŒæœŸã™ã‚‹ã®ã§ã¯ãªãã€è‡ªåˆ†è‡ªèº«ã¨åŒæœŸã™ã‚‹ã‚ˆã†ã«è¨å®šãƒ•ァイルを記述ã™ã‚‹ã¨è¨€ã†ã“ã¨ã§ã™ã€‚
restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap
fudge 127.127.1.0 stratum 5
ntp.confを編集ã—ãŸã‚‰ntpdサービスをå†èµ·å‹•ã—ã¾ã™ã€‚
ã—ã°ã‚‰ã時間をãŠã„ã¦ntpqコマンドã§ç¢ºèªã—ã¦ã¿ã¾ã—ãŸã€‚
サーãƒãƒ¼A
サーãƒãƒ¼B/C
サーãƒãƒ¼Aã§ã¯stratumã‚’5ã¨æŒ‡å®šã—ãŸã®ã«ã€ã‚µãƒ¼ãƒãƒ¼B/Cã§ã¯6ã¨èªè˜ã•れã¦ã„ã‚‹ã®ãŒãªãœã ã‹ã‚ã‹ã‚Šã¾ã›ã‚“ãŒã€ç„¡äº‹ã«ã‚¿ã‚¤ãƒ サーãƒãƒ¼ã¨ã—ã¦èªè˜ã•れã€åŒæœŸã•れã¦ã„ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚
ãƒãƒ¼ã‚«ãƒ«ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å†…ã§ã®åŒæœŸãªã®ã§ã€æ™‚刻差ãŒã¨ã¦ã‚‚å°ã•ã„ã§ã™ã€‚
ãã‚“ãªã¨ãã¯ã€ä¸€å°ã‚’ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å†…ã®æ™‚刻サーãƒãƒ¼ã¨ã—ã¦æ‰±ã„ã€ãã®ã‚µãƒ¼ãƒãƒ¼ã®æ™‚刻を他ã®ãƒžã‚·ãƒ³ã®åŸºæº–ã«ã•ã›ã‚‹ã“ã¨ãŒã§ãã¾ã™ã€‚æ¬¡ã®æ§˜ãªç’°å¢ƒã§æ§‹æˆã—ã¦ã¿ã¾ã™ã€‚
サーãƒãƒ¼A:192.168.0.1
時刻サーãƒãƒ¼
サーãƒãƒ¼B:192.168.0.2
サーãƒãƒ¼C:192.168.0.3
クライアント
ã¾ãšã€ã‚¯ãƒ©ã‚¤ã‚¢ãƒ³ãƒˆã¨ãªã‚‹ã‚µãƒ¼ãƒãƒ¼B/Cã®è¨å®šã‚’見ã¦ã¿ã¾ã™ã€‚
restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap
server 192.168.0.1 minpoll 4 maxpoll 10
ã“れらã®ã‚µãƒ¼ãƒãƒ¼ã®è¨å®šã«ã¤ã„ã¦ã¯ä»Šã¾ã§é€šã‚Šã€æ™‚刻サーãƒãƒ¼ã‚’見ã«è¡Œãè¨å®šã«ã™ã‚‹ã®ã§ç‰¹ã«å•題ãªã„ã¨æ€ã„ã¾ã™ã€‚
時刻サーãƒãƒ¼ã¨ãªã‚‹ã‚µãƒ¼ãƒãƒ¼Aã§ã™ãŒã€åŸºæœ¬çš„ãªè¨å®šãƒ•ã‚¡ã‚¤ãƒ«ã®æ›¸ãæ–¹ã¯ä»Šã¾ã§é€šã‚Šã§ã™ã€‚一ã¤é•ã†ã®ã¯ã€ã“ã®ã‚µãƒ¼ãƒãƒ¼ã¯å¤–部サーãƒãƒ¼ã¨åŒæœŸã™ã‚‹ã®ã§ã¯ãªãã€è‡ªåˆ†è‡ªèº«ã¨åŒæœŸã™ã‚‹ã‚ˆã†ã«è¨å®šãƒ•ァイルを記述ã™ã‚‹ã¨è¨€ã†ã“ã¨ã§ã™ã€‚
restrict 192.168.0.0 mask 255.255.255.0 nomodify notrap
fudge 127.127.1.0 stratum 5
ntp.confを編集ã—ãŸã‚‰ntpdサービスをå†èµ·å‹•ã—ã¾ã™ã€‚
ã—ã°ã‚‰ã時間をãŠã„ã¦ntpqコマンドã§ç¢ºèªã—ã¦ã¿ã¾ã—ãŸã€‚
サーãƒãƒ¼A
]# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*LOCAL(0) .LOCL. 5 l 33 64 377 0.000 0.000 0.001
サーãƒãƒ¼B/C
# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*192.168.0.1 LOCAL(0) 6 u 535 1024 377 1.334 0.484 0.126
LOCAL(0) .LOCL. 10 l 13 64 377 0.000 0.000 0.001
サーãƒãƒ¼Aã§ã¯stratumã‚’5ã¨æŒ‡å®šã—ãŸã®ã«ã€ã‚µãƒ¼ãƒãƒ¼B/Cã§ã¯6ã¨èªè˜ã•れã¦ã„ã‚‹ã®ãŒãªãœã ã‹ã‚ã‹ã‚Šã¾ã›ã‚“ãŒã€ç„¡äº‹ã«ã‚¿ã‚¤ãƒ サーãƒãƒ¼ã¨ã—ã¦èªè˜ã•れã€åŒæœŸã•れã¦ã„ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚
ãƒãƒ¼ã‚«ãƒ«ãƒãƒƒãƒˆãƒ¯ãƒ¼ã‚¯å†…ã§ã®åŒæœŸãªã®ã§ã€æ™‚刻差ãŒã¨ã¦ã‚‚å°ã•ã„ã§ã™ã€‚
ntp.confã®å®Ÿé¨“ã§ntpã®æ™‚刻è¨å®šé–“éš”ã®maxpollã‚’20ã«è¨å®šã—ã¦ã‹ã‚‰ã ã„ã¶çµŒã¡ã¾ã™ã€‚
è¨å®šã—ãŸã®ãŒ9月15日。polling 17ã«ãªã£ãŸã®ãŒ18日。もã†ã™ã一ヶ月ãŒéŽãŽã‚ˆã†ã¨ã—ã¦ã„ã‚‹ãŒã€ã“れ以上ã‚ãŒã‚Šãã†ã«ã‚りã¾ã›ã‚“。
ã‚れã‹ã‚‰ãšã£ã¨polling 17ã§ã™ãŒã€ã‚„ã£ã±ã‚Šãšã‚ŒãŒæ•°åミリ秒。一番æ£ç¢ºãªã¨ãã¯0.6ミリ秒ã§ã—ãŸã€‚
çµå±€ã®æ‰€ã€maxpollã®æœ€é•·ã¯17ã¨ã„ã†ã“ã¨ãªã®ã§ã—ょã†ã€‚ã§ã‚‚ã€ç¾å®Ÿçš„ã«ã¯ã‚‚ã†å°‘ã—é »ç¹ã«æ™‚åˆ»åŒæœŸã‚’ã™ã‚‹ã¹ããªã®ã§ã—ょã†ã。
RHEL3/4ã§ç¢ºèª(ä¸)
è¨å®šã—ãŸã®ãŒ9月15日。polling 17ã«ãªã£ãŸã®ãŒ18日。もã†ã™ã一ヶ月ãŒéŽãŽã‚ˆã†ã¨ã—ã¦ã„ã‚‹ãŒã€ã“れ以上ã‚ãŒã‚Šãã†ã«ã‚りã¾ã›ã‚“。
ã‚れã‹ã‚‰ãšã£ã¨polling 17ã§ã™ãŒã€ã‚„ã£ã±ã‚Šãšã‚ŒãŒæ•°åミリ秒。一番æ£ç¢ºãªã¨ãã¯0.6ミリ秒ã§ã—ãŸã€‚
çµå±€ã®æ‰€ã€maxpollã®æœ€é•·ã¯17ã¨ã„ã†ã“ã¨ãªã®ã§ã—ょã†ã€‚ã§ã‚‚ã€ç¾å®Ÿçš„ã«ã¯ã‚‚ã†å°‘ã—é »ç¹ã«æ™‚åˆ»åŒæœŸã‚’ã™ã‚‹ã¹ããªã®ã§ã—ょã†ã。
RHEL3/4ã§ç¢ºèª(ä¸)
ntp_config.cã®ã‚½ãƒ¼ã‚¹ãƒ•ァイルを見ã¦ã„ãŸã‚‰ã€"maxpoll: provided value (%d) is above maximum (%d)"ã¨ã„ã†ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒã‚ã£ãŸã€‚
maxpollã®æœ€å¤§å€¤ã¯16ã¨ã•れã¦ã„ã‚‹ã®ã§ã€ntp.conf内ã§"maxpoll 20"ã¨è¨å®šã‚’ã™ã‚‹ã¨ã‚¨ãƒ©ãƒ¼ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒå‡ºåŠ›ã•ã‚Œã‚‹ã¨æ€ã£ã¦ãƒ†ã‚¹ãƒˆã—ãŸã€‚
開発1å·æ©Ÿï¼šntp-4.1.2-4.EL3.1
開発2å·æ©Ÿï¼šntp-4.2.0.a.20040617-4.EL4.1
試ã¿ãã®ä¸€
試ã—ã¦ã¿ã¾ã—ãŸã€‚"maxpoll 20"ã§ã€‚
çµæžœ(1å·æ©Ÿ):
ntpd.log
"
15 Sep 12:57:51 ntpd[31704]: running as uid(38)/gid(38) euid(38)/egid(38).
15 Sep 12:57:51 ntpd[31704]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
15 Sep 12:57:53 ntpd[31704]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 12:58:06 ntpd[31704]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 12:59:00 ntpd[31704]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_ntp, 2 events, event_restart' (0xc621)
15 Sep 12:59:00 ntpd[31704]: kernel time discipline status change 41
15 Sep 12:59:00 ntpd[31704]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_ntp, 3 events, event_peer/strat_chg' (0x634)
15 Sep 12:59:00 ntpd[31704]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_ntp, 4 events, event_sync_chg' (0x643)
15 Sep 12:59:34 ntpd[31704]: kernel time discipline status change 1
15 Sep 13:57:50 ntpd[31704]: offset 0.000048 sec freq 7.999 ppm error 0.000052 poll 4
15 Sep 14:57:51 ntpd[31704]: offset -0.000238 sec freq 9.235 ppm error 0.000054 poll 5
15 Sep 15:57:51 ntpd[31704]: offset 0.000064 sec freq 8.666 ppm error 0.000020 poll 6
15 Sep 16:57:51 ntpd[31704]: offset -0.000692 sec freq 8.988 ppm error 0.002022 poll 7
15 Sep 17:57:51 ntpd[31704]: offset -0.000660 sec freq 8.863 ppm error 0.000429 poll 10
15 Sep 18:57:51 ntpd[31704]: offset -0.000444 sec freq 8.859 ppm error 0.000740 poll 11
15 Sep 19:36:13 ntpd[31704]: kernel time discipline status change 9
15 Sep 19:57:51 ntpd[31704]: offset -0.008352 sec freq 8.179 ppm error 0.003542 poll 11
15 Sep 20:57:51 ntpd[31704]: offset 0.002172 sec freq 8.547 ppm error 0.004831 poll 12
15 Sep 21:57:51 ntpd[31704]: offset 0.000417 sec freq 8.598 ppm error 0.004275 poll 12
15 Sep 22:57:51 ntpd[31704]: offset 0.000660 sec freq 8.638 ppm error 0.003704 poll 12
15 Sep 23:57:51 ntpd[31704]: offset -0.000731 sec freq 8.594 ppm error 0.003282 poll 13
16 Sep 00:57:51 ntpd[31704]: offset -0.000750 sec freq 8.548 ppm error 0.002843 poll 13
16 Sep 01:57:51 ntpd[31704]: offset -0.000750 sec freq 8.548 ppm error 0.002843 poll 13
16 Sep 02:57:51 ntpd[31704]: offset -0.000750 sec freq 8.548 ppm error 0.002843 poll 13
16 Sep 03:57:51 ntpd[31704]: offset -0.008941 sec freq 8.275 ppm error 0.004778 poll 13
16 Sep 04:57:51 ntpd[31704]: offset -0.008941 sec freq 8.275 ppm error 0.004778 poll 13
16 Sep 05:57:51 ntpd[31704]: offset 0.004730 sec freq 8.419 ppm error 0.007990 poll 14
16 Sep 06:57:51 ntpd[31704]: offset 0.004730 sec freq 8.419 ppm error 0.007990 poll 14
16 Sep 07:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 08:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 09:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 10:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 11:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 12:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 13:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 14:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 15:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 16:57:51 ntpd[31704]: offset 0.011501 sec freq 8.492 ppm error 0.010268 poll 15
16 Sep 17:57:51 ntpd[31704]: offset 0.011501 sec freq 8.492 ppm error 0.010268 poll 15
~ä¸ç•¥ï½ž
17 Sep 13:57:52 ntpd[31704]: offset -0.001231 sec freq 8.443 ppm error 0.009870 poll 15
17 Sep 14:57:52 ntpd[31704]: offset -0.001231 sec freq 8.443 ppm error 0.009870 poll 15
17 Sep 15:57:52 ntpd[31704]: offset -0.004637 sec freq 8.407 ppm error 0.008715 poll 16
17 Sep 16:57:52 ntpd[31704]: offset -0.004637 sec freq 8.407 ppm error 0.008715 poll 16
~ä¸ç•¥ï½ž
18 Sep 16:57:53 ntpd[31704]: offset -0.001362 sec freq 8.397 ppm error 0.007723 poll 16
18 Sep 17:57:53 ntpd[31704]: offset -0.001362 sec freq 8.397 ppm error 0.007723 poll 16
18 Sep 18:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
18 Sep 19:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
~ä¸ç•¥ï½ž
19 Sep 10:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
19 Sep 11:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
19 Sep 12:57:53 ntpd[31704]: offset -0.002818 sec freq 8.386 ppm error 0.006008 poll 16
19 Sep 13:57:53 ntpd[31704]: offset -0.002818 sec freq 8.386 ppm error 0.006008 poll 16
~ä¸ç•¥ï½ž
21 Sep 17:57:55 ntpd[31704]: offset 0.004329 sec freq 8.395 ppm error 0.006312 poll 16
21 Sep 18:57:55 ntpd[31704]: offset 0.004329 sec freq 8.395 ppm error 0.006312 poll 16
21 Sep 19:57:55 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
21 Sep 20:57:55 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
~ä¸ç•¥ï½ž
22 Sep 11:57:56 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
22 Sep 12:57:56 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
22 Sep 13:57:56 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
22 Sep 14:57:56 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
~ä¸ç•¥ï½ž
23 Sep 21:57:57 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
23 Sep 22:57:57 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
23 Sep 23:33:31 ntpd[31704]: kernel time discipline status change 1
23 Sep 23:57:57 ntpd[31704]: offset 0.000000 sec freq 8.382 ppm error 0.000203 poll 6
24 Sep 00:57:57 ntpd[31704]: offset 0.000000 sec freq 8.382 ppm error 0.000005 poll 6
24 Sep 01:57:57 ntpd[31704]: offset 0.000000 sec freq 8.382 ppm error 0.000005 poll 6
24 Sep 02:57:57 ntpd[31704]: offset 0.000624 sec freq 7.146 ppm error 0.000218 poll 9
24 Sep 03:57:57 ntpd[31704]: offset 0.003131 sec freq 7.178 ppm error 0.000655 poll 10
24 Sep 04:57:57 ntpd[31704]: offset 0.004188 sec freq 7.312 ppm error 0.000528 poll 8
24 Sep 05:57:57 ntpd[31704]: offset 0.000421 sec freq 8.024 ppm error 0.000102 poll 9
24 Sep 06:57:57 ntpd[31704]: offset 0.000054 sec freq 8.189 ppm error 0.000016 poll 6
24 Sep 07:57:57 ntpd[31704]: offset 0.000132 sec freq 8.311 ppm error 0.000022 poll 7
24 Sep 08:57:57 ntpd[31704]: offset -0.000058 sec freq 8.335 ppm error 0.001162 poll 9
"
ntpq -p
ãªãœé€”ä¸ã§polling 16ã‹ã‚‰6ã«æˆ»ã£ã¦ã—ã¾ã£ãŸã®ã‹ã¯ã“ã®ãƒã‚°ã‹ã‚‰ã ã¨ä¸æ˜Žã§ã™ã€‚"kernel time discipline status change 1"ã¯ntpデーモンを起動ã—ãŸã¨ãã«ã‚‚出ã¦ãるメッセージãªã®ã§ã€ã‚‚ã—ã‹ã—ãŸã‚‰é€”ä¸ã§ãƒ‡ãƒ¼ãƒ¢ãƒ³ãŒè½ã¡ãŸï¼Ÿï¼Ÿè¬Žã§ã™ã€‚
ãã‚‚ãも期待ã—ã¦ã„ãŸã‚¨ãƒ©ãƒ¼ãŒå‡ºãªã‹ã£ãŸã®ãŒæ®‹å¿µã§ã—ãŸã€‚
çµæžœ(2å·æ©Ÿ):
ntpd.log
"
15 Sep 12:57:23 ntpd[20341]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
15 Sep 12:57:24 ntpd[20341]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 12:57:25 ntpd[20341]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 13:00:09 ntpd[20341]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_ntp, 2 events, event_restart' (0xc621)
15 Sep 13:00:09 ntpd[20341]: synchronized to 123.456.789.098, stratum 2
15 Sep 13:00:09 ntpd[20341]: kernel time sync disabled 0041
15 Sep 13:00:09 ntpd[20341]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_ntp, 3 events, event_peer/strat_chg' (0x634)
15 Sep 13:00:09 ntpd[20341]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_ntp, 4 events, event_sync_chg' (0x643)
15 Sep 13:01:14 ntpd[20341]: kernel time sync enabled 0001
15 Sep 13:57:26 ntpd[20341]: offset 0.000076 sec freq -10.358 ppm error 0.000500 poll 7
15 Sep 14:57:29 ntpd[20341]: offset 0.001830 sec freq -10.103 ppm error 0.000667 poll 8
15 Sep 15:57:32 ntpd[20341]: offset 0.000819 sec freq -10.060 ppm error 0.000518 poll 9
15 Sep 16:57:35 ntpd[20341]: offset 0.003252 sec freq -10.038 ppm error 0.001683 poll 10
15 Sep 17:16:59 ntpd[20341]: kernel time sync enabled 0009
15 Sep 17:57:38 ntpd[20341]: offset 0.000493 sec freq -9.740 ppm error 0.000456 poll 11
15 Sep 18:57:41 ntpd[20341]: offset 0.001259 sec freq -9.586 ppm error 0.000766 poll 12
15 Sep 19:57:44 ntpd[20341]: offset -0.007421 sec freq -10.491 ppm error 0.008680 poll 12
15 Sep 20:57:48 ntpd[20341]: offset 0.001426 sec freq -10.404 ppm error 0.008847 poll 12
15 Sep 21:57:51 ntpd[20341]: offset 0.005827 sec freq -10.049 ppm error 0.004401 poll 13
15 Sep 22:57:54 ntpd[20341]: offset 0.000494 sec freq -10.019 ppm error 0.005333 poll 13
15 Sep 23:57:57 ntpd[20341]: offset 0.000494 sec freq -10.019 ppm error 0.005333 poll 13
16 Sep 00:58:00 ntpd[20341]: offset 0.000733 sec freq -9.997 ppm error 0.000239 poll 13
16 Sep 01:58:03 ntpd[20341]: offset 0.000733 sec freq -9.997 ppm error 0.000239 poll 13
16 Sep 02:58:06 ntpd[20341]: offset -0.007565 sec freq -10.227 ppm error 0.008298 poll 14
16 Sep 03:58:09 ntpd[20341]: offset -0.007565 sec freq -10.227 ppm error 0.008298 poll 14
16 Sep 04:58:12 ntpd[20341]: offset -0.007565 sec freq -10.227 ppm error 0.008298 poll 14
16 Sep 05:58:15 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 06:58:18 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 07:58:21 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 08:58:24 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 09:58:27 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 10:58:30 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 11:58:33 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 12:58:36 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 13:58:39 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 14:58:42 ntpd[20341]: offset -0.000757 sec freq -10.004 ppm error 0.002667 poll 15
16 Sep 15:58:45 ntpd[20341]: offset -0.000757 sec freq -10.004 ppm error 0.002667 poll 15
~ä¸ç•¥ï½ž
17 Sep 11:59:45 ntpd[20341]: offset 0.029060 sec freq -9.779 ppm error 0.028832 poll 15
17 Sep 12:59:48 ntpd[20341]: offset 0.029060 sec freq -9.779 ppm error 0.028832 poll 15
17 Sep 13:59:52 ntpd[20341]: offset 0.019983 sec freq -9.627 ppm error 0.009077 poll 16
17 Sep 14:59:55 ntpd[20341]: offset 0.019983 sec freq -9.627 ppm error 0.009077 poll 16
~ä¸ç•¥ï½ž
18 Sep 15:01:07 ntpd[20341]: offset 0.021678 sec freq -9.462 ppm error 0.001695 poll 16
18 Sep 16:01:10 ntpd[20341]: offset 0.021678 sec freq -9.462 ppm error 0.001695 poll 16
18 Sep 17:01:13 ntpd[20341]: offset 0.001315 sec freq -9.457 ppm error 0.020363 poll 17
18 Sep 18:01:16 ntpd[20341]: offset 0.001315 sec freq -9.457 ppm error 0.020363 poll 17
~ä¸ç•¥ï½ž
24 Sep 08:08:02 ntpd[20341]: offset 0.096578 sec freq -9.175 ppm error 0.051412 poll 17
24 Sep 09:08:05 ntpd[20341]: offset 0.096578 sec freq -9.175 ppm error 0.051412 poll 17
"
ntpq -p
1å·æ©Ÿã¨ã¯é•ã„ã€ã“ã¡ã‚‰ã¯ãšã£ã¨å®‰å®šã—ã¦polling 17ã¨ãªã£ã¦ã„ã¾ã™ã€‚polling 16ã‹ã‚‰17ã«ãªã‚‹ã¾ã§ã«ä¸¸ä¸€æ—¥ã€‚polling 17ã«ãªã£ã¦ã‹ã‚‰ã™ã§ã«äº”æ—¥åŠçµŒã£ã¦ã„ã‚‹ã®ã«ã¾ã 18ã«ãªã‚‰ãªã„。
ã§ã‚‚ã€36時間ã«ä¸€åº¦ã®æ™‚刻調整ã§ã‚‚æ•°åミリ秒ã®ãšã‚Œãªã‚“ã ã‹ã‚‰ãªã‹ãªã‹ã™ã”ã„ã¨æ€ã†ï¼ˆé–‹ç™ºã‚µãƒ¼ãƒãƒ¼ã§ä»Šå›žã®å®Ÿé¨“ä¸ã»ã¨ã‚“ã©ç„¡è² è·ã ã£ãŸã®ã‚‚影響ã—ã¦ã„ã‚‹ã ã‚ã†ãŒï¼‰ã€‚
ã“ã¡ã‚‰ã®ã‚µãƒ¼ãƒãƒ¼ã§ã‚‚期待ã—ã¦ã„ãŸã‚¨ãƒ©ãƒ¼ã¯å‡ºåŠ›ã•れã¾ã›ã‚“ã§ã—ãŸã€‚何ã‹ãƒ†ã‚¹ãƒˆã®ä»•æ–¹ãŒé–“é•ã£ã¦ã„ã‚‹ã®ã‹ã‚‚・・・
試ã¿ãã®äºŒ
ã¤ã„ã§ãªã®ã§ã€maxpollã¨minpollã®å€¤ãŒé€†ã«ãªã‚‹ã‚ˆã†ã«ã‚‚è¨å®šã—ã¦ã¿ã¾ã—ãŸã€‚"minpoll 14 maxpoll 10"ã§ã€‚
ã“ã¡ã‚‰ã¯çµæžœãŒå‡ºã‚‹ã®ãŒã¨ã¦ã‚‚æ—©ã‹ã£ãŸã§ã™ã€‚
çµæžœ(開発1å·æ©Ÿ):
ntpd.log
"
14 Sep 13:27:34 ntpd[16798]: running as uid(38)/gid(38) euid(38)/egid(38).
14 Sep 13:27:34 ntpd[16798]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
14 Sep 13:27:43 ntpd[16798]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
14 Sep 13:30:55 ntpd[16798]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_local_proto, 2 events, event_restart' (0xc521)
14 Sep 13:30:55 ntpd[16798]: kernel time discipline status change 41
14 Sep 13:30:55 ntpd[16798]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_local_proto, 3 events, event_peer/strat_chg' (0x534)
14 Sep 13:30:55 ntpd[16798]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_local_proto, 4 events, event_sync_chg' (0x543)
14 Sep 13:31:58 ntpd[16798]: kernel time discipline status change 1
14 Sep 14:27:34 ntpd[16798]: offset 0.000000 sec freq 8.386 ppm error 0.000011 poll 6
"
ntpq -p
çµæžœ(開発2å·æ©Ÿ):
ntpd.log
"
15 Sep 09:41:59 ntpd[19023]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
15 Sep 09:42:00 ntpd[19023]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 09:45:14 ntpd[19023]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_local_proto, 2 events, event_restart' (0xc521)
15 Sep 09:45:14 ntpd[19023]: synchronized to LOCAL(0), stratum 10
15 Sep 09:45:14 ntpd[19023]: kernel time sync disabled 0041
15 Sep 09:45:14 ntpd[19023]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_local_proto, 3 events, event_peer/strat_chg' (0x534)
15 Sep 09:45:14 ntpd[19023]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_local_proto, 4 events, event_sync_chg' (0x543)
15 Sep 09:46:20 ntpd[19023]: kernel time sync enabled 0001
"
ntpq -p
エラーãƒã‚°ã¯å‡ºåŠ›ã•れãªã‹ã£ãŸã‘れã©ã‚‚ã€æŒ‡å®šã—ãŸæ™‚刻サーãƒãƒ¼ã¨ã¯åŒæœŸã•れã¾ã›ã‚“ã§ã—ãŸã€‚ã©ã†ã‚„らã€minpollãŒmaxpollを上回るè¨å®šã«ãªã£ã¦ã„ã‚‹ã¨ã€æ™‚åˆ»åŒæœŸã‚µãƒ¼ãƒãƒ¼ã¯LOCALã¨ã—ã¦å‹•ãよã†ã§ã™ï¼ˆãã®ä»–è¨å®šãŒé–“é•ã£ã¦ã„ã‚‹ã¨ãã‚‚ãã†ãªã‚‹ã®ã‹ã¯ã¾ãŸåˆ¥ã®æ©Ÿä¼šã«èª¿ã¹ã¾ã™ï¼‰ã€‚
maxpollã®æœ€å¤§å€¤ã¯16ã¨ã•れã¦ã„ã‚‹ã®ã§ã€ntp.conf内ã§"maxpoll 20"ã¨è¨å®šã‚’ã™ã‚‹ã¨ã‚¨ãƒ©ãƒ¼ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒå‡ºåŠ›ã•ã‚Œã‚‹ã¨æ€ã£ã¦ãƒ†ã‚¹ãƒˆã—ãŸã€‚
開発1å·æ©Ÿï¼šntp-4.1.2-4.EL3.1
開発2å·æ©Ÿï¼šntp-4.2.0.a.20040617-4.EL4.1
試ã¿ãã®ä¸€
試ã—ã¦ã¿ã¾ã—ãŸã€‚"maxpoll 20"ã§ã€‚
çµæžœ(1å·æ©Ÿ):
ntpd.log
"
15 Sep 12:57:51 ntpd[31704]: running as uid(38)/gid(38) euid(38)/egid(38).
15 Sep 12:57:51 ntpd[31704]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
15 Sep 12:57:53 ntpd[31704]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 12:58:06 ntpd[31704]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 12:59:00 ntpd[31704]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_ntp, 2 events, event_restart' (0xc621)
15 Sep 12:59:00 ntpd[31704]: kernel time discipline status change 41
15 Sep 12:59:00 ntpd[31704]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_ntp, 3 events, event_peer/strat_chg' (0x634)
15 Sep 12:59:00 ntpd[31704]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_ntp, 4 events, event_sync_chg' (0x643)
15 Sep 12:59:34 ntpd[31704]: kernel time discipline status change 1
15 Sep 13:57:50 ntpd[31704]: offset 0.000048 sec freq 7.999 ppm error 0.000052 poll 4
15 Sep 14:57:51 ntpd[31704]: offset -0.000238 sec freq 9.235 ppm error 0.000054 poll 5
15 Sep 15:57:51 ntpd[31704]: offset 0.000064 sec freq 8.666 ppm error 0.000020 poll 6
15 Sep 16:57:51 ntpd[31704]: offset -0.000692 sec freq 8.988 ppm error 0.002022 poll 7
15 Sep 17:57:51 ntpd[31704]: offset -0.000660 sec freq 8.863 ppm error 0.000429 poll 10
15 Sep 18:57:51 ntpd[31704]: offset -0.000444 sec freq 8.859 ppm error 0.000740 poll 11
15 Sep 19:36:13 ntpd[31704]: kernel time discipline status change 9
15 Sep 19:57:51 ntpd[31704]: offset -0.008352 sec freq 8.179 ppm error 0.003542 poll 11
15 Sep 20:57:51 ntpd[31704]: offset 0.002172 sec freq 8.547 ppm error 0.004831 poll 12
15 Sep 21:57:51 ntpd[31704]: offset 0.000417 sec freq 8.598 ppm error 0.004275 poll 12
15 Sep 22:57:51 ntpd[31704]: offset 0.000660 sec freq 8.638 ppm error 0.003704 poll 12
15 Sep 23:57:51 ntpd[31704]: offset -0.000731 sec freq 8.594 ppm error 0.003282 poll 13
16 Sep 00:57:51 ntpd[31704]: offset -0.000750 sec freq 8.548 ppm error 0.002843 poll 13
16 Sep 01:57:51 ntpd[31704]: offset -0.000750 sec freq 8.548 ppm error 0.002843 poll 13
16 Sep 02:57:51 ntpd[31704]: offset -0.000750 sec freq 8.548 ppm error 0.002843 poll 13
16 Sep 03:57:51 ntpd[31704]: offset -0.008941 sec freq 8.275 ppm error 0.004778 poll 13
16 Sep 04:57:51 ntpd[31704]: offset -0.008941 sec freq 8.275 ppm error 0.004778 poll 13
16 Sep 05:57:51 ntpd[31704]: offset 0.004730 sec freq 8.419 ppm error 0.007990 poll 14
16 Sep 06:57:51 ntpd[31704]: offset 0.004730 sec freq 8.419 ppm error 0.007990 poll 14
16 Sep 07:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 08:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 09:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 10:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 11:57:51 ntpd[31704]: offset -0.000711 sec freq 8.397 ppm error 0.007436 poll 14
16 Sep 12:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 13:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 14:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 15:57:51 ntpd[31704]: offset -0.005281 sec freq 8.317 ppm error 0.006833 poll 14
16 Sep 16:57:51 ntpd[31704]: offset 0.011501 sec freq 8.492 ppm error 0.010268 poll 15
16 Sep 17:57:51 ntpd[31704]: offset 0.011501 sec freq 8.492 ppm error 0.010268 poll 15
~ä¸ç•¥ï½ž
17 Sep 13:57:52 ntpd[31704]: offset -0.001231 sec freq 8.443 ppm error 0.009870 poll 15
17 Sep 14:57:52 ntpd[31704]: offset -0.001231 sec freq 8.443 ppm error 0.009870 poll 15
17 Sep 15:57:52 ntpd[31704]: offset -0.004637 sec freq 8.407 ppm error 0.008715 poll 16
17 Sep 16:57:52 ntpd[31704]: offset -0.004637 sec freq 8.407 ppm error 0.008715 poll 16
~ä¸ç•¥ï½ž
18 Sep 16:57:53 ntpd[31704]: offset -0.001362 sec freq 8.397 ppm error 0.007723 poll 16
18 Sep 17:57:53 ntpd[31704]: offset -0.001362 sec freq 8.397 ppm error 0.007723 poll 16
18 Sep 18:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
18 Sep 19:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
~ä¸ç•¥ï½ž
19 Sep 10:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
19 Sep 11:57:53 ntpd[31704]: offset 0.000106 sec freq 8.397 ppm error 0.006729 poll 17
19 Sep 12:57:53 ntpd[31704]: offset -0.002818 sec freq 8.386 ppm error 0.006008 poll 16
19 Sep 13:57:53 ntpd[31704]: offset -0.002818 sec freq 8.386 ppm error 0.006008 poll 16
~ä¸ç•¥ï½ž
21 Sep 17:57:55 ntpd[31704]: offset 0.004329 sec freq 8.395 ppm error 0.006312 poll 16
21 Sep 18:57:55 ntpd[31704]: offset 0.004329 sec freq 8.395 ppm error 0.006312 poll 16
21 Sep 19:57:55 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
21 Sep 20:57:55 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
~ä¸ç•¥ï½ž
22 Sep 11:57:56 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
22 Sep 12:57:56 ntpd[31704]: offset 0.000772 sec freq 8.398 ppm error 0.005748 poll 17
22 Sep 13:57:56 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
22 Sep 14:57:56 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
~ä¸ç•¥ï½ž
23 Sep 21:57:57 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
23 Sep 22:57:57 ntpd[31704]: offset -0.004090 sec freq 8.382 ppm error 0.005540 poll 16
23 Sep 23:33:31 ntpd[31704]: kernel time discipline status change 1
23 Sep 23:57:57 ntpd[31704]: offset 0.000000 sec freq 8.382 ppm error 0.000203 poll 6
24 Sep 00:57:57 ntpd[31704]: offset 0.000000 sec freq 8.382 ppm error 0.000005 poll 6
24 Sep 01:57:57 ntpd[31704]: offset 0.000000 sec freq 8.382 ppm error 0.000005 poll 6
24 Sep 02:57:57 ntpd[31704]: offset 0.000624 sec freq 7.146 ppm error 0.000218 poll 9
24 Sep 03:57:57 ntpd[31704]: offset 0.003131 sec freq 7.178 ppm error 0.000655 poll 10
24 Sep 04:57:57 ntpd[31704]: offset 0.004188 sec freq 7.312 ppm error 0.000528 poll 8
24 Sep 05:57:57 ntpd[31704]: offset 0.000421 sec freq 8.024 ppm error 0.000102 poll 9
24 Sep 06:57:57 ntpd[31704]: offset 0.000054 sec freq 8.189 ppm error 0.000016 poll 6
24 Sep 07:57:57 ntpd[31704]: offset 0.000132 sec freq 8.311 ppm error 0.000022 poll 7
24 Sep 08:57:57 ntpd[31704]: offset -0.000058 sec freq 8.335 ppm error 0.001162 poll 9
"
ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*123.456.789.098 123.456.789.1 2 u 429 512 377 0.135 -0.022 0.028
LOCAL(0) LOCAL(0) 11 l 41 64 377 0.000 0.000 0.004
ãªãœé€”ä¸ã§polling 16ã‹ã‚‰6ã«æˆ»ã£ã¦ã—ã¾ã£ãŸã®ã‹ã¯ã“ã®ãƒã‚°ã‹ã‚‰ã ã¨ä¸æ˜Žã§ã™ã€‚"kernel time discipline status change 1"ã¯ntpデーモンを起動ã—ãŸã¨ãã«ã‚‚出ã¦ãるメッセージãªã®ã§ã€ã‚‚ã—ã‹ã—ãŸã‚‰é€”ä¸ã§ãƒ‡ãƒ¼ãƒ¢ãƒ³ãŒè½ã¡ãŸï¼Ÿï¼Ÿè¬Žã§ã™ã€‚
ãã‚‚ãも期待ã—ã¦ã„ãŸã‚¨ãƒ©ãƒ¼ãŒå‡ºãªã‹ã£ãŸã®ãŒæ®‹å¿µã§ã—ãŸã€‚
çµæžœ(2å·æ©Ÿ):
ntpd.log
"
15 Sep 12:57:23 ntpd[20341]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
15 Sep 12:57:24 ntpd[20341]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 12:57:25 ntpd[20341]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 13:00:09 ntpd[20341]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_ntp, 2 events, event_restart' (0xc621)
15 Sep 13:00:09 ntpd[20341]: synchronized to 123.456.789.098, stratum 2
15 Sep 13:00:09 ntpd[20341]: kernel time sync disabled 0041
15 Sep 13:00:09 ntpd[20341]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_ntp, 3 events, event_peer/strat_chg' (0x634)
15 Sep 13:00:09 ntpd[20341]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_ntp, 4 events, event_sync_chg' (0x643)
15 Sep 13:01:14 ntpd[20341]: kernel time sync enabled 0001
15 Sep 13:57:26 ntpd[20341]: offset 0.000076 sec freq -10.358 ppm error 0.000500 poll 7
15 Sep 14:57:29 ntpd[20341]: offset 0.001830 sec freq -10.103 ppm error 0.000667 poll 8
15 Sep 15:57:32 ntpd[20341]: offset 0.000819 sec freq -10.060 ppm error 0.000518 poll 9
15 Sep 16:57:35 ntpd[20341]: offset 0.003252 sec freq -10.038 ppm error 0.001683 poll 10
15 Sep 17:16:59 ntpd[20341]: kernel time sync enabled 0009
15 Sep 17:57:38 ntpd[20341]: offset 0.000493 sec freq -9.740 ppm error 0.000456 poll 11
15 Sep 18:57:41 ntpd[20341]: offset 0.001259 sec freq -9.586 ppm error 0.000766 poll 12
15 Sep 19:57:44 ntpd[20341]: offset -0.007421 sec freq -10.491 ppm error 0.008680 poll 12
15 Sep 20:57:48 ntpd[20341]: offset 0.001426 sec freq -10.404 ppm error 0.008847 poll 12
15 Sep 21:57:51 ntpd[20341]: offset 0.005827 sec freq -10.049 ppm error 0.004401 poll 13
15 Sep 22:57:54 ntpd[20341]: offset 0.000494 sec freq -10.019 ppm error 0.005333 poll 13
15 Sep 23:57:57 ntpd[20341]: offset 0.000494 sec freq -10.019 ppm error 0.005333 poll 13
16 Sep 00:58:00 ntpd[20341]: offset 0.000733 sec freq -9.997 ppm error 0.000239 poll 13
16 Sep 01:58:03 ntpd[20341]: offset 0.000733 sec freq -9.997 ppm error 0.000239 poll 13
16 Sep 02:58:06 ntpd[20341]: offset -0.007565 sec freq -10.227 ppm error 0.008298 poll 14
16 Sep 03:58:09 ntpd[20341]: offset -0.007565 sec freq -10.227 ppm error 0.008298 poll 14
16 Sep 04:58:12 ntpd[20341]: offset -0.007565 sec freq -10.227 ppm error 0.008298 poll 14
16 Sep 05:58:15 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 06:58:18 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 07:58:21 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 08:58:24 ntpd[20341]: offset 0.006732 sec freq -10.022 ppm error 0.014298 poll 14
16 Sep 09:58:27 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 10:58:30 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 11:58:33 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 12:58:36 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 13:58:39 ntpd[20341]: offset 0.001910 sec freq -9.993 ppm error 0.004822 poll 14
16 Sep 14:58:42 ntpd[20341]: offset -0.000757 sec freq -10.004 ppm error 0.002667 poll 15
16 Sep 15:58:45 ntpd[20341]: offset -0.000757 sec freq -10.004 ppm error 0.002667 poll 15
~ä¸ç•¥ï½ž
17 Sep 11:59:45 ntpd[20341]: offset 0.029060 sec freq -9.779 ppm error 0.028832 poll 15
17 Sep 12:59:48 ntpd[20341]: offset 0.029060 sec freq -9.779 ppm error 0.028832 poll 15
17 Sep 13:59:52 ntpd[20341]: offset 0.019983 sec freq -9.627 ppm error 0.009077 poll 16
17 Sep 14:59:55 ntpd[20341]: offset 0.019983 sec freq -9.627 ppm error 0.009077 poll 16
~ä¸ç•¥ï½ž
18 Sep 15:01:07 ntpd[20341]: offset 0.021678 sec freq -9.462 ppm error 0.001695 poll 16
18 Sep 16:01:10 ntpd[20341]: offset 0.021678 sec freq -9.462 ppm error 0.001695 poll 16
18 Sep 17:01:13 ntpd[20341]: offset 0.001315 sec freq -9.457 ppm error 0.020363 poll 17
18 Sep 18:01:16 ntpd[20341]: offset 0.001315 sec freq -9.457 ppm error 0.020363 poll 17
~ä¸ç•¥ï½ž
24 Sep 08:08:02 ntpd[20341]: offset 0.096578 sec freq -9.175 ppm error 0.051412 poll 17
24 Sep 09:08:05 ntpd[20341]: offset 0.096578 sec freq -9.175 ppm error 0.051412 poll 17
"
ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*123.456.789.098 123.456.789.1 2 u 9h 36h 377 1.188 96.578 51.412
LOCAL(0) LOCAL(0) 10 l 64 64 377 0.000 0.000 0.004
1å·æ©Ÿã¨ã¯é•ã„ã€ã“ã¡ã‚‰ã¯ãšã£ã¨å®‰å®šã—ã¦polling 17ã¨ãªã£ã¦ã„ã¾ã™ã€‚polling 16ã‹ã‚‰17ã«ãªã‚‹ã¾ã§ã«ä¸¸ä¸€æ—¥ã€‚polling 17ã«ãªã£ã¦ã‹ã‚‰ã™ã§ã«äº”æ—¥åŠçµŒã£ã¦ã„ã‚‹ã®ã«ã¾ã 18ã«ãªã‚‰ãªã„。
ã§ã‚‚ã€36時間ã«ä¸€åº¦ã®æ™‚刻調整ã§ã‚‚æ•°åミリ秒ã®ãšã‚Œãªã‚“ã ã‹ã‚‰ãªã‹ãªã‹ã™ã”ã„ã¨æ€ã†ï¼ˆé–‹ç™ºã‚µãƒ¼ãƒãƒ¼ã§ä»Šå›žã®å®Ÿé¨“ä¸ã»ã¨ã‚“ã©ç„¡è² è·ã ã£ãŸã®ã‚‚影響ã—ã¦ã„ã‚‹ã ã‚ã†ãŒï¼‰ã€‚
ã“ã¡ã‚‰ã®ã‚µãƒ¼ãƒãƒ¼ã§ã‚‚期待ã—ã¦ã„ãŸã‚¨ãƒ©ãƒ¼ã¯å‡ºåŠ›ã•れã¾ã›ã‚“ã§ã—ãŸã€‚何ã‹ãƒ†ã‚¹ãƒˆã®ä»•æ–¹ãŒé–“é•ã£ã¦ã„ã‚‹ã®ã‹ã‚‚・・・
試ã¿ãã®äºŒ
ã¤ã„ã§ãªã®ã§ã€maxpollã¨minpollã®å€¤ãŒé€†ã«ãªã‚‹ã‚ˆã†ã«ã‚‚è¨å®šã—ã¦ã¿ã¾ã—ãŸã€‚"minpoll 14 maxpoll 10"ã§ã€‚
ã“ã¡ã‚‰ã¯çµæžœãŒå‡ºã‚‹ã®ãŒã¨ã¦ã‚‚æ—©ã‹ã£ãŸã§ã™ã€‚
çµæžœ(開発1å·æ©Ÿ):
ntpd.log
"
14 Sep 13:27:34 ntpd[16798]: running as uid(38)/gid(38) euid(38)/egid(38).
14 Sep 13:27:34 ntpd[16798]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
14 Sep 13:27:43 ntpd[16798]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
14 Sep 13:30:55 ntpd[16798]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_local_proto, 2 events, event_restart' (0xc521)
14 Sep 13:30:55 ntpd[16798]: kernel time discipline status change 41
14 Sep 13:30:55 ntpd[16798]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_local_proto, 3 events, event_peer/strat_chg' (0x534)
14 Sep 13:30:55 ntpd[16798]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_local_proto, 4 events, event_sync_chg' (0x543)
14 Sep 13:31:58 ntpd[16798]: kernel time discipline status change 1
14 Sep 14:27:34 ntpd[16798]: offset 0.000000 sec freq 8.386 ppm error 0.000011 poll 6
"
ntpq -p
# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*LOCAL(0) LOCAL(0) 11 l 4 64 377 0.000 0.000 0.008
çµæžœ(開発2å·æ©Ÿ):
ntpd.log
"
15 Sep 09:41:59 ntpd[19023]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
15 Sep 09:42:00 ntpd[19023]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
15 Sep 09:45:14 ntpd[19023]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_local_proto, 2 events, event_restart' (0xc521)
15 Sep 09:45:14 ntpd[19023]: synchronized to LOCAL(0), stratum 10
15 Sep 09:45:14 ntpd[19023]: kernel time sync disabled 0041
15 Sep 09:45:14 ntpd[19023]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_local_proto, 3 events, event_peer/strat_chg' (0x534)
15 Sep 09:45:14 ntpd[19023]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_local_proto, 4 events, event_sync_chg' (0x543)
15 Sep 09:46:20 ntpd[19023]: kernel time sync enabled 0001
"
ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*LOCAL(0) LOCAL(0) 10 l 5 64 377 0.000 0.000 0.004
エラーãƒã‚°ã¯å‡ºåŠ›ã•れãªã‹ã£ãŸã‘れã©ã‚‚ã€æŒ‡å®šã—ãŸæ™‚刻サーãƒãƒ¼ã¨ã¯åŒæœŸã•れã¾ã›ã‚“ã§ã—ãŸã€‚ã©ã†ã‚„らã€minpollãŒmaxpollを上回るè¨å®šã«ãªã£ã¦ã„ã‚‹ã¨ã€æ™‚åˆ»åŒæœŸã‚µãƒ¼ãƒãƒ¼ã¯LOCALã¨ã—ã¦å‹•ãよã†ã§ã™ï¼ˆãã®ä»–è¨å®šãŒé–“é•ã£ã¦ã„ã‚‹ã¨ãã‚‚ãã†ãªã‚‹ã®ã‹ã¯ã¾ãŸåˆ¥ã®æ©Ÿä¼šã«èª¿ã¹ã¾ã™ï¼‰ã€‚
ntpq -pã§ã®è¡¨ç¤ºã§pollingé–“éš”ã®æ™‚間表示ãŒç§’ã‹ã‚‰åˆ†ã«å¤‰ã‚ã£ãŸã“ã¨ã‚’書ãã¾ã—ãŸã€‚
今日ã¯åˆ†ã‹ã‚‰æ™‚ã«å¤‰ã‚りã¾ã—ãŸã€‚
polling 14ã§ã¯æ™‚åˆ»åŒæœŸé–“éš”ã¯273分ã§ã™ã€‚
polling 15ã«ãªã‚‹ã¨åŒæœŸé–“éš”ã¯9時間(546分)ã«ãªã‚Šã¾ã™ã€‚
273分ã¶ã‚Šã«æ™‚刻調整をã—ãŸã®ã«ã‚‚ã‹ã‹ã‚らãšã€ãšã‚ŒãŒ0.228ミリ秒ã ã£ãŸã¨ã„ã†ã®ãŒé©šãã§ã™ã€‚
polling 14ã‹ã‚‰15ã«ãªã‚‹ã¾ã§ã«ç´„åŠæ—¥ã‹ã‹ã‚Šã¾ã—ãŸã€‚明日ã®ã†ã¡ã«ã¯16ã«ãªã‚‹ã®ã‹ãªï¼Ÿ
今日ã¯åˆ†ã‹ã‚‰æ™‚ã«å¤‰ã‚りã¾ã—ãŸã€‚
polling 14ã§ã¯æ™‚åˆ»åŒæœŸé–“éš”ã¯273分ã§ã™ã€‚
# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*123.456.789.098 123.98.1.90 2 u 61m 273m 377 0.169 11.501 16.782
LOCAL(0) LOCAL(0) 11 l 24 64 377 0.000 0.000 0.004
polling 15ã«ãªã‚‹ã¨åŒæœŸé–“éš”ã¯9時間(546分)ã«ãªã‚Šã¾ã™ã€‚
# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*123.456.789.098 123.98.1.90 2 u 175 9h 377 1.110 0.228 0.985
LOCAL(0) LOCAL(0) 11 l 24 64 377 0.000 0.000 0.008
273分ã¶ã‚Šã«æ™‚刻調整をã—ãŸã®ã«ã‚‚ã‹ã‹ã‚らãšã€ãšã‚ŒãŒ0.228ミリ秒ã ã£ãŸã¨ã„ã†ã®ãŒé©šãã§ã™ã€‚
polling 14ã‹ã‚‰15ã«ãªã‚‹ã¾ã§ã«ç´„åŠæ—¥ã‹ã‹ã‚Šã¾ã—ãŸã€‚明日ã®ã†ã¡ã«ã¯16ã«ãªã‚‹ã®ã‹ãªï¼Ÿ
NTP関連ã§ã™ãŒã€ntpqã¨ã„ã†ã‚³ãƒžãƒ³ãƒ‰ãŒã‚りã¾ã™ã€‚
ã“れã¯ã€ntpデーモンを起動ã—ã¦ã„ã‚‹ã¨ãã«ã€è‡ªåˆ†ã®ã‚µãƒ¼ãƒãƒ¼ãŒã©ã®æ™‚刻サーãƒãƒ¼ã¨åŒæœŸã‚’ã¨ã£ã¦ã„ã‚‹ã®ã‹ã€ã©ã‚Œãã‚‰ã„æ™‚刻差ãŒã‚ã‚‹ã®ã‹ã‚’確èªã§ãるコマンドã§ã™ã€‚
maxpoll 16ã§åŒæœŸã™ã‚‹ã«ã¯ã©ã‚Œãã‚‰ã„æ™‚é–“ãŒã‹ã‹ã‚‹ã®ã‹å®Ÿé¨“ã—ã¦ã„ã‚‹ã®ã§ã™ãŒã€pollingãŒ12ã«ãªã£ã¦ã‹ã‚‰è¡¨ç¤ºãŒå¤‰åŒ–ã—ã¾ã—ãŸã€‚when列ã¨poll列ã§ã™ã€‚
polling 11ã¾ã§ã¯ã“ã‚Œã‚‰ã®æ•°å€¤ã¯ç§’æ•°ã§2ã®4ä¹—(16)ã‹ã‚‰11ä¹—(2048)ã¾ã§è¡¨ç¤ºã•れるã®ã§ã™ãŒã€polling 12ã‹ã‚‰ã¯åˆ†æ•°ãŒè¡¨ç¤ºã•れるよã†ã«ãªã‚Šã¾ã—ãŸã€‚æ•°å—ã®å¾Œã‚ã«ã¤ã„ã¦ã„ã‚‹"m"ã¯minuteã®mã§ã™ã€‚上記ã§ã¯ã€pollingé–“éš”ãŒ68分ã§ã€å‰å›žåŒæœŸã‚’ã¨ã£ã¦ã‹ã‚‰61分経éŽã—ã¦ã„ã‚‹ã“ã¨ã‚’表ã—ã¦ã„ã¾ã™ã€‚whenã®å€¤ã¯ã¯ã˜ã‚ã¯ç§’æ•°ã§ã‚«ã‚¦ãƒ³ãƒˆã•れã¦ã„ã¾ã—ãŸãŒã€ã‚ã‚‹ã¨ã“ã‚ã‹ã‚‰åˆ†ã§ã®ã‚«ã‚¦ãƒ³ãƒˆã«å¤‰ã‚ã£ã¦ã„ã¾ã—ãŸã€‚境目ã¯ã©ã“ãªã‚“ã ã‚ã†ï¼Ÿ
ã¡ãªã¿ã«ã€2行目ã®LOCALã¯64ç§’é–“éš”ã§ã®åŒæœŸã§ã™ã€‚
polling 16ã¯ç´„18時間ãªã®ã§18hã¨è¡¨ç¤ºã•れるã®ã§ã—ょã†ã‹ï¼Ÿç¾å ´ã®ã‚µãƒ¼ãƒãƒ¼ã«ä»•込んã§ã‚ã‚‹ã®ã§æ˜Žæ—¥ãŒæ¥½ã—ã¿ã§ã™ã€‚
RHEL4ã§ç¢ºèªã—ã¦ã‚りã¾ã™ã€‚
ã“れã¯ã€ntpデーモンを起動ã—ã¦ã„ã‚‹ã¨ãã«ã€è‡ªåˆ†ã®ã‚µãƒ¼ãƒãƒ¼ãŒã©ã®æ™‚刻サーãƒãƒ¼ã¨åŒæœŸã‚’ã¨ã£ã¦ã„ã‚‹ã®ã‹ã€ã©ã‚Œãã‚‰ã„æ™‚刻差ãŒã‚ã‚‹ã®ã‹ã‚’確èªã§ãるコマンドã§ã™ã€‚
maxpoll 16ã§åŒæœŸã™ã‚‹ã«ã¯ã©ã‚Œãã‚‰ã„æ™‚é–“ãŒã‹ã‹ã‚‹ã®ã‹å®Ÿé¨“ã—ã¦ã„ã‚‹ã®ã§ã™ãŒã€pollingãŒ12ã«ãªã£ã¦ã‹ã‚‰è¡¨ç¤ºãŒå¤‰åŒ–ã—ã¾ã—ãŸã€‚when列ã¨poll列ã§ã™ã€‚
# ntpq -p
remote refid st t when poll reach delay offset jitter
==============================================================================
*123.456.789.098 123.98.1.90 2 u 61m 68m 377 0.110 0.281 0.142
LOCAL(0) LOCAL(0) 11 l 24 64 377 0.000 0.000 0.008
polling 11ã¾ã§ã¯ã“ã‚Œã‚‰ã®æ•°å€¤ã¯ç§’æ•°ã§2ã®4ä¹—(16)ã‹ã‚‰11ä¹—(2048)ã¾ã§è¡¨ç¤ºã•れるã®ã§ã™ãŒã€polling 12ã‹ã‚‰ã¯åˆ†æ•°ãŒè¡¨ç¤ºã•れるよã†ã«ãªã‚Šã¾ã—ãŸã€‚æ•°å—ã®å¾Œã‚ã«ã¤ã„ã¦ã„ã‚‹"m"ã¯minuteã®mã§ã™ã€‚上記ã§ã¯ã€pollingé–“éš”ãŒ68分ã§ã€å‰å›žåŒæœŸã‚’ã¨ã£ã¦ã‹ã‚‰61分経éŽã—ã¦ã„ã‚‹ã“ã¨ã‚’表ã—ã¦ã„ã¾ã™ã€‚whenã®å€¤ã¯ã¯ã˜ã‚ã¯ç§’æ•°ã§ã‚«ã‚¦ãƒ³ãƒˆã•れã¦ã„ã¾ã—ãŸãŒã€ã‚ã‚‹ã¨ã“ã‚ã‹ã‚‰åˆ†ã§ã®ã‚«ã‚¦ãƒ³ãƒˆã«å¤‰ã‚ã£ã¦ã„ã¾ã—ãŸã€‚境目ã¯ã©ã“ãªã‚“ã ã‚ã†ï¼Ÿ
ã¡ãªã¿ã«ã€2行目ã®LOCALã¯64ç§’é–“éš”ã§ã®åŒæœŸã§ã™ã€‚
polling 16ã¯ç´„18時間ãªã®ã§18hã¨è¡¨ç¤ºã•れるã®ã§ã—ょã†ã‹ï¼Ÿç¾å ´ã®ã‚µãƒ¼ãƒãƒ¼ã«ä»•込んã§ã‚ã‚‹ã®ã§æ˜Žæ—¥ãŒæ¥½ã—ã¿ã§ã™ã€‚
RHEL4ã§ç¢ºèªã—ã¦ã‚りã¾ã™ã€‚
先月ã€ã‚µãƒ¼ãƒãƒ¼ã®æ™‚刻è¨å®šã‚’行ã†ä½œæ¥ã‚’行ã„ã€æ‰‹å‹•ã§æ™‚刻サーãƒãƒ¼ã¨åŒæœŸã‚’å–ã‚‹æ‰‹é †ã‚’å…¥ã‚Œã¦ã„ãŸã€‚
本番サーãƒãƒ¼ã§ã®ä½œæ¥ã¯ä½œæ¥æ‰‹é †æ›¸ã‚’書ã„ã¦ã€ã‚ªãƒšãƒ¬ãƒ¼ã‚¿ãƒ¼ã«å¼•ãç¶™ã„ã§è¡Œã‚ãªã‘れã°ãªã‚‰ãªã„ã®ã§ã€æ™‚åˆ»èª¿æ•´ã®æ‰€ã§ä¸‹è¨˜ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’確èªã™ã‚‹ã‚ˆã†ã«æ‰‹é †ã‚’書ã„ãŸã€‚
"
DD MMM hh:mm:ss ntpdate[xxxxx]: step time server 123.456.789.098 offset -xx.xxxxxx sec
"
実際ã«ä½œæ¥ã‚’ãŠé¡˜ã„ã—ãŸã‚‰ntpdateコマンドを実行ã—ãŸã¨ã“ã‚ã§å•ã„åˆã‚ã›ã®é›»è©±ãŒé³´ã£ãŸã€‚
"
DD MMM hh:mm:ss ntpdate[xxxxx]: step time server 123.456.789.098 offset -xx.xxxxxx sec
"
ã§ã¯ãªã
"
DD MMM hh:mm:ss ntpdate[xxxxx]: adjust time server 123.456.789.098 offset -xx.xxxxxx sec
"
ã ã‘れã©ã‚‚æ£å¸¸ã«ä½œæ¥ãŒå‡ºæ¥ã¦ã„ã‚‹ã®ã‹ï¼Ÿã¨ã€‚
"step"ã‹"adjust"ã‹ã®é•ã„ãªã®ã§å¤§ä¸ˆå¤«ã§ã™ã¨ç”ãˆãŸå¾Œã«ã‚½ãƒ¼ã‚¹ã‚’調ã¹ã¦ã¿ãŸã€‚
ã™ã‚‹ã¨ã€èª¿æ•´ã—ãŸç§’æ•°ãŒ0.5ç§’ä»¥ä¸Šã‹æœªæº€ã‹ã§å‡ºåŠ›ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒå¤‰ã‚ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚
調整幅ãŒ0.5秒未満ã®å ´åˆã«ã¯ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸"adjust time server・・・"ãŒã€0.5秒以上ã®å ´åˆã«ã¯ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸"step time server・・・"ãŒè¡¨ç¤ºã•れã¾ã™ã€‚
"
[root@TESTSERVER root]# ntpdate -q 123.456.789.098
server 123.456.789.098, stratum 2, offset -0.000586, delay 0.02568
15 Sep 16:59:32 ntpdate[20923]: adjust time server 123.456.789.098 offset -0.000586 sec
[root@TESTSERVER root]# date
Tue Sep 15 16:59:36 JST 2009
[root@TESTSERVER root]# date 09151700
Tue Sep 15 17:00:00 JST 2009
[root@TESTSERVER root]# ntpdate -q 123.456.789.098
server 123.456.789.098, stratum 2, offset -15.117865, delay 0.02570
15 Sep 17:00:04 ntpdate[20926]: step time server 123.456.789.098 offset -15.117865 sec
[root@TESTSERVER root]# ntpdate 123.456.789.098
15 Sep 16:59:55 ntpdate[20927]: step time server 123.456.789.098 offset -15.117872 sec
[root@TESTSERVER root]# ntpdate -q 123.456.789.098
server 203.214.181.109, stratum 2, offset -0.000139, delay 0.02568
15 Sep 17:01:32 ntpdate[20932]: adjust time server 123.456.789.098 offset -0.000139 sec
[root@TESTSERVER root]# ntpdate 123.456.789.098
15 Sep 17:01:32 ntpdate[20932]: adjust time server 123.456.789.098 offset -0.000139 sec
"
上記ã®ã‚ˆã†ã«ã€-qオプションをã¤ã‘ãŸã¨ãã«ã‚‚stepã‹adjustã‹ã‚’確èªã™ã‚‹ã“ã¨ãŒå‡ºæ¥ã¾ã™ã€‚
勉強ã«ãªã‚Šã¾ã—ãŸã€‚
RHEL3/4ã§ç¢ºèªï¼ˆã‚½ãƒ¼ã‚¹ã¯RHEL5ã®ç‰©ï¼‰
本番サーãƒãƒ¼ã§ã®ä½œæ¥ã¯ä½œæ¥æ‰‹é †æ›¸ã‚’書ã„ã¦ã€ã‚ªãƒšãƒ¬ãƒ¼ã‚¿ãƒ¼ã«å¼•ãç¶™ã„ã§è¡Œã‚ãªã‘れã°ãªã‚‰ãªã„ã®ã§ã€æ™‚åˆ»èª¿æ•´ã®æ‰€ã§ä¸‹è¨˜ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ã‚’確èªã™ã‚‹ã‚ˆã†ã«æ‰‹é †ã‚’書ã„ãŸã€‚
"
DD MMM hh:mm:ss ntpdate[xxxxx]: step time server 123.456.789.098 offset -xx.xxxxxx sec
"
実際ã«ä½œæ¥ã‚’ãŠé¡˜ã„ã—ãŸã‚‰ntpdateコマンドを実行ã—ãŸã¨ã“ã‚ã§å•ã„åˆã‚ã›ã®é›»è©±ãŒé³´ã£ãŸã€‚
"
DD MMM hh:mm:ss ntpdate[xxxxx]: step time server 123.456.789.098 offset -xx.xxxxxx sec
"
ã§ã¯ãªã
"
DD MMM hh:mm:ss ntpdate[xxxxx]: adjust time server 123.456.789.098 offset -xx.xxxxxx sec
"
ã ã‘れã©ã‚‚æ£å¸¸ã«ä½œæ¥ãŒå‡ºæ¥ã¦ã„ã‚‹ã®ã‹ï¼Ÿã¨ã€‚
"step"ã‹"adjust"ã‹ã®é•ã„ãªã®ã§å¤§ä¸ˆå¤«ã§ã™ã¨ç”ãˆãŸå¾Œã«ã‚½ãƒ¼ã‚¹ã‚’調ã¹ã¦ã¿ãŸã€‚
ã™ã‚‹ã¨ã€èª¿æ•´ã—ãŸç§’æ•°ãŒ0.5ç§’ä»¥ä¸Šã‹æœªæº€ã‹ã§å‡ºåŠ›ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸ãŒå¤‰ã‚ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã—ãŸã€‚
ntpdate.h(64)
#define NTPDATE_THRESHOLD (FP_SECOND >> 1) /* 1/2 second */
ntpdate.c(1295)
if (always_step) {
dostep = 1;
} else if (never_step) {
dostep = 0;
} else {
absoffset = server->soffset;
if (absoffset < 0)
absoffset = -absoffset;
dostep = (absoffset >= NTPDATE_THRESHOLD || absoffset < 0);
}
if (dostep) {
if (simple_query || l_step_systime(&server->offset)) {
msyslog(LOG_NOTICE, "step time server %s offset %s sec",
stoa(&server->srcadr),
lfptoa(&server->offset, 6));
}
} else {
#if !defined SYS_WINNT && !defined SYS_CYGWIN32
if (simple_query || l_adj_systime(&server->offset)) {
msyslog(LOG_NOTICE, "adjust time server %s offset %s sec",
stoa(&server->srcadr),
lfptoa(&server->offset, 6));
}
調整幅ãŒ0.5秒未満ã®å ´åˆã«ã¯ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸"adjust time server・・・"ãŒã€0.5秒以上ã®å ´åˆã«ã¯ãƒ¡ãƒƒã‚»ãƒ¼ã‚¸"step time server・・・"ãŒè¡¨ç¤ºã•れã¾ã™ã€‚
"
[root@TESTSERVER root]# ntpdate -q 123.456.789.098
server 123.456.789.098, stratum 2, offset -0.000586, delay 0.02568
15 Sep 16:59:32 ntpdate[20923]: adjust time server 123.456.789.098 offset -0.000586 sec
[root@TESTSERVER root]# date
Tue Sep 15 16:59:36 JST 2009
[root@TESTSERVER root]# date 09151700
Tue Sep 15 17:00:00 JST 2009
[root@TESTSERVER root]# ntpdate -q 123.456.789.098
server 123.456.789.098, stratum 2, offset -15.117865, delay 0.02570
15 Sep 17:00:04 ntpdate[20926]: step time server 123.456.789.098 offset -15.117865 sec
[root@TESTSERVER root]# ntpdate 123.456.789.098
15 Sep 16:59:55 ntpdate[20927]: step time server 123.456.789.098 offset -15.117872 sec
[root@TESTSERVER root]# ntpdate -q 123.456.789.098
server 203.214.181.109, stratum 2, offset -0.000139, delay 0.02568
15 Sep 17:01:32 ntpdate[20932]: adjust time server 123.456.789.098 offset -0.000139 sec
[root@TESTSERVER root]# ntpdate 123.456.789.098
15 Sep 17:01:32 ntpdate[20932]: adjust time server 123.456.789.098 offset -0.000139 sec
"
上記ã®ã‚ˆã†ã«ã€-qオプションをã¤ã‘ãŸã¨ãã«ã‚‚stepã‹adjustã‹ã‚’確èªã™ã‚‹ã“ã¨ãŒå‡ºæ¥ã¾ã™ã€‚
勉強ã«ãªã‚Šã¾ã—ãŸã€‚
RHEL3/4ã§ç¢ºèªï¼ˆã‚½ãƒ¼ã‚¹ã¯RHEL5ã®ç‰©ï¼‰
logconfigã®è¨å®šã«ã¤ã„ã¦ã§æ€ã„ã¤ã„ãŸ"logconfig +syscall"ã®å‹•ãを試ã—ãŸã€‚
時刻ãŒèª¿æ•´ã•れã¦ã„るサーãƒãƒ¼ã§ntpdã‚’åœæ¢å¾Œã€dateã‚³ãƒžãƒ³ãƒ‰ã§æ™‚刻を2分ã»ã©ãšã‚‰ã—ãŸã€‚ãã—ã¦ntpdã®èµ·å‹•を行ã„ã€ä¸‹è¨˜ã®ãƒã‚°ãŒå‡ºåŠ›ã•れãŸã€‚
"
10 Sep 10:15:09 ntpd[11346]: running as uid(38)/gid(38) euid(38)/egid(38).
10 Sep 10:18:42 ntpd[11346]: time reset 139.316135 s
10 Sep 10:18:42 ntpd[11346]: kernel time discipline status change 41
10 Sep 10:18:42 ntpd[11346]: synchronisation lost
10 Sep 10:20:23 ntpd[11346]: kernel time discipline status change 1
"
"time reset 139.316135 s"。å‰å›žäºˆæƒ³ã—ãŸã¨ãŠã‚Šã€ã‚·ã‚¹ãƒ†ãƒ クãƒãƒƒã‚¯ã«é–¢ã™ã‚‹ãƒã‚°ãŒå‡ºåŠ›ã•れるんã 。
今回ã®ãƒã‚°ã§å‡ºåŠ›ã•れãŸ"synchronisation lost"ã¯ã‚½ãƒ¼ã‚¹ã‚’検索ã—ã¦ã‚‚出ã¦ã“ãªã„ã®ã ãŒã€æ™‚刻ãŒã‚¹ãƒ†ãƒƒãƒ—調整ã•れるã¨ä¸€æ—¦æ™‚刻サーãƒãƒ¼ã¨ã®æŽ¥ç¶šãŒã¨ãŽã‚Œã‚‹ã‚‰ã—ã„。ãã®å¾Œã€"kernel time discipline status change 1"ãŒå‡ºã¦ãŠã‚Šã€nptqã‚³ãƒžãƒ³ãƒ‰ã§æ™‚åˆ»åŒæœŸãŒå–れã¦ã„ã‚‹ã®ã§ä»Šã®ã¨ã“ã‚ã¯ã‚ˆã—ã¨ã™ã‚‹ã€‚
相変ã‚らãšRHEL3/4ã§ç¢ºèªã€‚
時刻ãŒèª¿æ•´ã•れã¦ã„るサーãƒãƒ¼ã§ntpdã‚’åœæ¢å¾Œã€dateã‚³ãƒžãƒ³ãƒ‰ã§æ™‚刻を2分ã»ã©ãšã‚‰ã—ãŸã€‚ãã—ã¦ntpdã®èµ·å‹•を行ã„ã€ä¸‹è¨˜ã®ãƒã‚°ãŒå‡ºåŠ›ã•れãŸã€‚
"
10 Sep 10:15:09 ntpd[11346]: running as uid(38)/gid(38) euid(38)/egid(38).
10 Sep 10:18:42 ntpd[11346]: time reset 139.316135 s
10 Sep 10:18:42 ntpd[11346]: kernel time discipline status change 41
10 Sep 10:18:42 ntpd[11346]: synchronisation lost
10 Sep 10:20:23 ntpd[11346]: kernel time discipline status change 1
"
"time reset 139.316135 s"。å‰å›žäºˆæƒ³ã—ãŸã¨ãŠã‚Šã€ã‚·ã‚¹ãƒ†ãƒ クãƒãƒƒã‚¯ã«é–¢ã™ã‚‹ãƒã‚°ãŒå‡ºåŠ›ã•れるんã 。
今回ã®ãƒã‚°ã§å‡ºåŠ›ã•れãŸ"synchronisation lost"ã¯ã‚½ãƒ¼ã‚¹ã‚’検索ã—ã¦ã‚‚出ã¦ã“ãªã„ã®ã ãŒã€æ™‚刻ãŒã‚¹ãƒ†ãƒƒãƒ—調整ã•れるã¨ä¸€æ—¦æ™‚刻サーãƒãƒ¼ã¨ã®æŽ¥ç¶šãŒã¨ãŽã‚Œã‚‹ã‚‰ã—ã„。ãã®å¾Œã€"kernel time discipline status change 1"ãŒå‡ºã¦ãŠã‚Šã€nptqã‚³ãƒžãƒ³ãƒ‰ã§æ™‚åˆ»åŒæœŸãŒå–れã¦ã„ã‚‹ã®ã§ä»Šã®ã¨ã“ã‚ã¯ã‚ˆã—ã¨ã™ã‚‹ã€‚
相変ã‚らãšRHEL3/4ã§ç¢ºèªã€‚
NTPã®è¨å®šã«ã¤ã„ã¦â‘¢ã§ã‚ˆãã‚ã‹ã‚‰ãšã«è¨å®šã—ãŸ"logconfig"ã«ã¤ã„ã¦è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚
"logconfig +syscall"
8 Sep 19:00:59 ntpd[14904]: running as uid(38)/gid(38) euid(38)/egid(38).
8 Sep 19:01:59 ntpd[14904]: kernel time discipline status change 41
8 Sep 19:02:34 ntpd[14904]: kernel time discipline status change 1
"logconfig +clockall"
8 Sep 19:00:57 ntpd[14110]: running as uid(38)/gid(38) euid(38)/egid(38).
8 Sep 19:01:57 ntpd[14110]: kernel time discipline status change 41
8 Sep 19:02:32 ntpd[14110]: kernel time discipline status change 1
"logconfig +peerall"
8 Sep 19:01:00 ntpd[511]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:01:01 ntpd[511]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:02:33 ntpd[511]: synchronized to 123.456.789.098, stratum 2
8 Sep 19:02:33 ntpd[511]: kernel time sync disabled 0041
8 Sep 19:09:04 ntpd[511]: kernel time sync enabled 0001
"logconfig +sysall"
8 Sep 19:00:58 ntpd[7444]: running as uid(38)/gid(38) euid(38)/egid(38).
8 Sep 19:00:58 ntpd[7444]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
8 Sep 19:01:06 ntpd[7444]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:01:09 ntpd[7444]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:01:58 ntpd[7444]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_ntp, 2 events, event_restart' (0xc621)
8 Sep 19:01:58 ntpd[7444]: kernel time discipline status change 41
8 Sep 19:01:58 ntpd[7444]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_ntp, 3 events, event_peer/strat_chg' (0x634)
8 Sep 19:01:58 ntpd[7444]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_ntp, 4 events, event_sync_chg' (0x643)
8 Sep 19:02:33 ntpd[7444]: kernel time discipline status change 1
8 Sep 20:00:58 ntpd[7444]: offset 0.000020 sec freq 27.469 ppm error 0.000079 poll 5
8 Sep 21:00:58 ntpd[7444]: offset 0.001049 sec freq 23.676 ppm error 0.000335 poll 6
8 Sep 22:00:58 ntpd[7444]: offset 0.000274 sec freq 23.906 ppm error 0.000411 poll 8
8 Sep 23:00:58 ntpd[7444]: offset 0.000842 sec freq 23.919 ppm error 0.000359 poll 10
9 Sep 00:00:58 ntpd[7444]: offset 0.007946 sec freq 23.954 ppm error 0.002036 poll 10
9 Sep 01:00:58 ntpd[7444]: offset 0.020403 sec freq 24.032 ppm error 0.004302 poll 10
9 Sep 02:00:58 ntpd[7444]: offset 0.005241 sec freq 25.256 ppm error 0.002214 poll 9
9 Sep 03:00:58 ntpd[7444]: offset 0.002397 sec freq 25.342 ppm error 0.001221 poll 10
9 Sep 04:00:59 ntpd[7444]: offset 0.003058 sec freq 25.386 ppm error 0.000715 poll 10
9 Sep 05:00:59 ntpd[7444]: offset 0.004596 sec freq 25.436 ppm error 0.000736 poll 9
9 Sep 06:00:59 ntpd[7444]: offset 0.000054 sec freq 25.811 ppm error 0.000558 poll 9
9 Sep 07:00:59 ntpd[7444]: offset 0.002246 sec freq 25.838 ppm error 0.000567 poll 10
9 Sep 08:00:59 ntpd[7444]: offset 0.001653 sec freq 25.885 ppm error 0.000350 poll 9
9 Sep 09:00:59 ntpd[7444]: offset 0.000101 sec freq 25.960 ppm error 0.000172 poll 10
試ã—ã¦ã¿ã¦æ°—ãŒã¤ã„ãŸã®ã¯ã€syscallã¨clockallã¯ãれãžã‚Œã‚·ã‚¹ãƒ†ãƒ クãƒãƒƒã‚¯ã¨ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã‚¯ãƒãƒƒã‚¯ã«ã¤ã„ã¦ã®ãƒã‚°ãƒ¬ãƒ™ãƒ«ã§ã¯ãªã„ã‹ï¼Ÿã¨ã„ã†ã“ã¨ã€‚今回試ã—ãŸã®ã¯æ™‚åˆ»åŒæœŸã‚’ã—ã¦ã„るサーãƒãƒ¼ã§ntp.confã‚’æ›¸ãæ›ãˆã¦ntpdã‚’å†èµ·å‹•ã—ãŸã ã‘ãªã®ã§ã€å¤§å¹…ãªæ™‚刻調整ã¯å…¥ã£ã¦ã„ãªã„。ãã®ãŸã‚ã€ãƒã‚°ã«ã¯èµ·å‹•ã«ã¤ã„ã¦ã®ãƒã‚°ã—ã‹å‡ºã¦ã„ãªã„ã®ã§ã¯ãªã„ã‹ï¼Ÿ
peerallã¯æŽ¥ç¶šå…ˆã‚µãƒ¼ãƒãƒ¼ã®çŠ¶æ…‹ã¨ã€ãれã«å¯¾å¿œã™ã‚‹è‡ªã‚µãƒ¼ãƒãƒ¼ã®çŠ¶æ…‹ã«ã¤ã„ã¦ã®ãƒã‚°ãƒ¬ãƒ™ãƒ«ã§ã¯ãªã„ã‹ï¼Ÿã¨ã„ã†ã“ã¨ã€‚ã“ã®ãƒ¬ãƒ™ãƒ«ã§åˆã‚ã¦"synchronized to・・・"ãŒè¨˜éŒ²ã•れã¦ã„る。
sysallã¯ä¸Šè¨˜å…¨ã¦ã‚’å«ã‚“ã ãƒã‚°ãƒ¬ãƒ™ãƒ«ã§ã¯ãªã„ã‹ï¼Ÿã¨ã„ã†ã“ã¨ã€‚ã§ã€ãれã«ãƒ—ラスã—ã¦driftfileã¸ã®æ›¸ãè¾¼ã¿ã«ã¤ã„ã¦ã®ãƒã‚°ã‚’出ã—ã¦ã„る(ã¡ãªã¿ã«ã€æ¯Žæ™‚driftfileãŒå¤‰æ›´ã•れã¦ã„ã‚‹ã“ã¨ãŒç¢ºèªã§ãる)。
ã¾ãŸå°‘ã—ãšã¤èª¿ã¹ã¦ã„ãã¾ã™ã€‚
"logconfig +syscall"
8 Sep 19:00:59 ntpd[14904]: running as uid(38)/gid(38) euid(38)/egid(38).
8 Sep 19:01:59 ntpd[14904]: kernel time discipline status change 41
8 Sep 19:02:34 ntpd[14904]: kernel time discipline status change 1
"logconfig +clockall"
8 Sep 19:00:57 ntpd[14110]: running as uid(38)/gid(38) euid(38)/egid(38).
8 Sep 19:01:57 ntpd[14110]: kernel time discipline status change 41
8 Sep 19:02:32 ntpd[14110]: kernel time discipline status change 1
"logconfig +peerall"
8 Sep 19:01:00 ntpd[511]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:01:01 ntpd[511]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:02:33 ntpd[511]: synchronized to 123.456.789.098, stratum 2
8 Sep 19:02:33 ntpd[511]: kernel time sync disabled 0041
8 Sep 19:09:04 ntpd[511]: kernel time sync enabled 0001
"logconfig +sysall"
8 Sep 19:00:58 ntpd[7444]: running as uid(38)/gid(38) euid(38)/egid(38).
8 Sep 19:00:58 ntpd[7444]: system event 'event_restart' (0x01) status 'sync_alarm, sync_unspec, 1 event, event_unspec' (0xc010)
8 Sep 19:01:06 ntpd[7444]: peer LOCAL(0) event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:01:09 ntpd[7444]: peer 123.456.789.098 event 'event_reach' (0x84) status 'unreach, conf, 1 event, event_reach' (0x8014)
8 Sep 19:01:58 ntpd[7444]: system event 'event_peer/strat_chg' (0x04) status 'sync_alarm, sync_ntp, 2 events, event_restart' (0xc621)
8 Sep 19:01:58 ntpd[7444]: kernel time discipline status change 41
8 Sep 19:01:58 ntpd[7444]: system event 'event_sync_chg' (0x03) status 'leap_none, sync_ntp, 3 events, event_peer/strat_chg' (0x634)
8 Sep 19:01:58 ntpd[7444]: system event 'event_peer/strat_chg' (0x04) status 'leap_none, sync_ntp, 4 events, event_sync_chg' (0x643)
8 Sep 19:02:33 ntpd[7444]: kernel time discipline status change 1
8 Sep 20:00:58 ntpd[7444]: offset 0.000020 sec freq 27.469 ppm error 0.000079 poll 5
8 Sep 21:00:58 ntpd[7444]: offset 0.001049 sec freq 23.676 ppm error 0.000335 poll 6
8 Sep 22:00:58 ntpd[7444]: offset 0.000274 sec freq 23.906 ppm error 0.000411 poll 8
8 Sep 23:00:58 ntpd[7444]: offset 0.000842 sec freq 23.919 ppm error 0.000359 poll 10
9 Sep 00:00:58 ntpd[7444]: offset 0.007946 sec freq 23.954 ppm error 0.002036 poll 10
9 Sep 01:00:58 ntpd[7444]: offset 0.020403 sec freq 24.032 ppm error 0.004302 poll 10
9 Sep 02:00:58 ntpd[7444]: offset 0.005241 sec freq 25.256 ppm error 0.002214 poll 9
9 Sep 03:00:58 ntpd[7444]: offset 0.002397 sec freq 25.342 ppm error 0.001221 poll 10
9 Sep 04:00:59 ntpd[7444]: offset 0.003058 sec freq 25.386 ppm error 0.000715 poll 10
9 Sep 05:00:59 ntpd[7444]: offset 0.004596 sec freq 25.436 ppm error 0.000736 poll 9
9 Sep 06:00:59 ntpd[7444]: offset 0.000054 sec freq 25.811 ppm error 0.000558 poll 9
9 Sep 07:00:59 ntpd[7444]: offset 0.002246 sec freq 25.838 ppm error 0.000567 poll 10
9 Sep 08:00:59 ntpd[7444]: offset 0.001653 sec freq 25.885 ppm error 0.000350 poll 9
9 Sep 09:00:59 ntpd[7444]: offset 0.000101 sec freq 25.960 ppm error 0.000172 poll 10
試ã—ã¦ã¿ã¦æ°—ãŒã¤ã„ãŸã®ã¯ã€syscallã¨clockallã¯ãれãžã‚Œã‚·ã‚¹ãƒ†ãƒ クãƒãƒƒã‚¯ã¨ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã‚¯ãƒãƒƒã‚¯ã«ã¤ã„ã¦ã®ãƒã‚°ãƒ¬ãƒ™ãƒ«ã§ã¯ãªã„ã‹ï¼Ÿã¨ã„ã†ã“ã¨ã€‚今回試ã—ãŸã®ã¯æ™‚åˆ»åŒæœŸã‚’ã—ã¦ã„るサーãƒãƒ¼ã§ntp.confã‚’æ›¸ãæ›ãˆã¦ntpdã‚’å†èµ·å‹•ã—ãŸã ã‘ãªã®ã§ã€å¤§å¹…ãªæ™‚刻調整ã¯å…¥ã£ã¦ã„ãªã„。ãã®ãŸã‚ã€ãƒã‚°ã«ã¯èµ·å‹•ã«ã¤ã„ã¦ã®ãƒã‚°ã—ã‹å‡ºã¦ã„ãªã„ã®ã§ã¯ãªã„ã‹ï¼Ÿ
peerallã¯æŽ¥ç¶šå…ˆã‚µãƒ¼ãƒãƒ¼ã®çŠ¶æ…‹ã¨ã€ãれã«å¯¾å¿œã™ã‚‹è‡ªã‚µãƒ¼ãƒãƒ¼ã®çŠ¶æ…‹ã«ã¤ã„ã¦ã®ãƒã‚°ãƒ¬ãƒ™ãƒ«ã§ã¯ãªã„ã‹ï¼Ÿã¨ã„ã†ã“ã¨ã€‚ã“ã®ãƒ¬ãƒ™ãƒ«ã§åˆã‚ã¦"synchronized to・・・"ãŒè¨˜éŒ²ã•れã¦ã„る。
sysallã¯ä¸Šè¨˜å…¨ã¦ã‚’å«ã‚“ã ãƒã‚°ãƒ¬ãƒ™ãƒ«ã§ã¯ãªã„ã‹ï¼Ÿã¨ã„ã†ã“ã¨ã€‚ã§ã€ãれã«ãƒ—ラスã—ã¦driftfileã¸ã®æ›¸ãè¾¼ã¿ã«ã¤ã„ã¦ã®ãƒã‚°ã‚’出ã—ã¦ã„る(ã¡ãªã¿ã«ã€æ¯Žæ™‚driftfileãŒå¤‰æ›´ã•れã¦ã„ã‚‹ã“ã¨ãŒç¢ºèªã§ãる)。
ã¾ãŸå°‘ã—ãšã¤èª¿ã¹ã¦ã„ãã¾ã™ã€‚
NTPã®è¨å®šã«ã¤ã„ã¦â‘ ã€
NTPã®è¨å®šã«ã¤ã„ã¦â‘¡ã®ç¶šã
å„種è¨å®šã®æ„味を調ã¹ã¦ã‹ã‚‰æ–°ã—ãntp.confを書ãç›´ã—ã¾ã—ãŸã€‚
"
tinker panic 0
restrict default ignore
restrict 127.0.0.1
restrict 123.456.789.0 mask 255.255.255.0 nomodify notrap
server 123.456.789.098 minpoll 4 maxpoll 8
server 123.456.789.097 minpoll 4 maxpoll 8
server 127.127.1.0
fudge 127.127.1.0 stratum 11
driftfile /var/lib/ntp/drift
logconfig +syscall +clockall +sysall +peerall
logfile /var/log/ntpd.log
"
ã¾ãšã€ntpデーモンãŒè‡ªå‹•çš„ã«çµ‚了ã—ãªã„よã†ã«è¨å®šã€‚
"restrict 123.456.789.0 mask 255.255.255.0"ã§åŒä¸€LAN内ã§ã®ã‚¢ã‚¯ã‚»ã‚¹ã‚’å¯èƒ½ã«ã€‚後ã®ã‚ªãƒ—ションã¯ä»–ã®ã‚µãƒ¼ãƒãƒ¼ã‹ã‚‰ã‚¢ã‚¯ã‚»ã‚¹ãŒæ¥ãŸã¨ãã«å¤‰æ›´ã•れるã“ã¨ãŒãªã„よã†ã«ã™ã‚‹ç‰©ã®ã‚ˆã†ã§ã™ï¼ˆè¦èª¿æŸ»ï¼‰ã€‚
今回ã¯å‚照時刻サーãƒãƒ¼ã‚’二カ所è¨å®šã—ã¦ã„ã¦ã€æ™‚刻調整間隔ã¯çŸã‚ã®4ã‹ã‚‰8ã«ã—ã¦ã‚りã¾ã™ã€‚今ã¾ã§10ã«è¨å®šã—ã¦ã„ã¦ã€ntpãŒå‹•ã„ã¦ã„ã‚‹é–“ã«30ç§’ã‚‚ãšã‚Œã¦ã„ãŸã®ã§ã€é–“隔を少ã—çŸãã™ã‚‹ã“ã¨ã«ãªã‚Šã¾ã—ãŸã€‚本番機ã ã‹ã‚‰ã©ã‚“ãªå…·åˆãªã®ã‹è¦‹ã‚‹ã“ã¨ãŒã§ããšã«æ®‹å¿µã§ã™ã€‚
"logconfig"ã§æŒ‡å®šã™ã‚‹ã¨è©³ç´°ãªãƒã‚°ãŒå‡ºåŠ›ã•れるよã†ã«ãªã‚Šã¾ã™ã€‚ã©ã®ã‚ªãƒ—ションをã¤ã‘ã‚‹ã¨ã©ã‚Œã ã‘変ã‚ã‚‹ã®ã‹ã¯ã¾ã 未調査ã§ã™ãŒã€ã¨ã‚Šã‚ãˆãšå…¨éƒ¨ä¹—ã›ã§ã„ãã¾ã—ãŸï¼ˆè¦èª¿æŸ»ï¼‰ã€‚
"logfile"ã«ã¯èµ·å‹•/åœæ¢ãƒ»æœ€åˆã«èª¿æ•´ã—ãŸæ™‚ã®ãšã‚Œå¹…ã¨driftファイルを更新ã—ãŸãƒã‚°ãŒå‡ºåŠ›ã•れã¾ã™ã€‚ãƒã‚°ã‚’見るã¨ã€driftファイルãŒä¸€æ™‚é–“ã”ã¨ã«ä¿®æ£ã•れã¦ã„ã‚‹ã“ã¨ãŒã‚ã‹ã‚Šã¾ã™ã€‚
ntp.confã‚’æ›¸ãæ›ãˆãŸã‚‰ntpdã‚’å†èµ·å‹•ã™ã‚Œã°ä½œæ¥å®Œäº†ã§ã™ã€‚æ–°ã—ã„è¨å®šã‚’èªã¿è¾¼ã‚“ã§å‹•ã„ã¦ãれã¾ã™ã€‚
NTPã®è¨å®šã«ã¤ã„ã¦â‘¡ã®ç¶šã
å„種è¨å®šã®æ„味を調ã¹ã¦ã‹ã‚‰æ–°ã—ãntp.confを書ãç›´ã—ã¾ã—ãŸã€‚
"
tinker panic 0
restrict default ignore
restrict 127.0.0.1
restrict 123.456.789.0 mask 255.255.255.0 nomodify notrap
server 123.456.789.098 minpoll 4 maxpoll 8
server 123.456.789.097 minpoll 4 maxpoll 8
server 127.127.1.0
fudge 127.127.1.0 stratum 11
driftfile /var/lib/ntp/drift
logconfig +syscall +clockall +sysall +peerall
logfile /var/log/ntpd.log
"
ã¾ãšã€ntpデーモンãŒè‡ªå‹•çš„ã«çµ‚了ã—ãªã„よã†ã«è¨å®šã€‚
"restrict 123.456.789.0 mask 255.255.255.0"ã§åŒä¸€LAN内ã§ã®ã‚¢ã‚¯ã‚»ã‚¹ã‚’å¯èƒ½ã«ã€‚後ã®ã‚ªãƒ—ションã¯ä»–ã®ã‚µãƒ¼ãƒãƒ¼ã‹ã‚‰ã‚¢ã‚¯ã‚»ã‚¹ãŒæ¥ãŸã¨ãã«å¤‰æ›´ã•れるã“ã¨ãŒãªã„よã†ã«ã™ã‚‹ç‰©ã®ã‚ˆã†ã§ã™ï¼ˆè¦èª¿æŸ»ï¼‰ã€‚
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ntp.confã®æ›¸ã方。
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"restrict default ignore"ã§ã¾ãšã€ã©ã“ã‹ã‚‰ã®ã‚¢ã‚¯ã‚»ã‚¹ã‚‚æ‹’å¦ã—ã¾ã™ï¼ˆã¯ã˜ã‚ã«ä¸€åˆ‡åˆåˆ‡æ‹’å¦ã™ã‚‹ã®ã¯ã‚»ã‚ュリティè¨å®šã§ã¯ãµã¤ã†ã®ã“ã¨ã§ã™ï¼‰ã€‚
"restrict 127.0.0.1"ã§ãƒãƒ¼ã‚«ãƒ«ãƒ›ã‚¹ãƒˆã‹ã‚‰ã®ã‚¢ã‚¯ã‚»ã‚¹ã‚’許å¯ã—ã¾ã™ã€‚ã“れã¯ã€æ™‚刻サーãƒãƒ¼ã«ã¤ãªãŒã‚‰ãªã„ã¨ãã«ã¯127.127.0.0ã‚’stratum 12ã®æ™‚刻サーãƒãƒ¼ã¨ã—ã¦æ™‚刻調整をã™ã‚‹å‹•ãã¨ãªã‚‹ã®ã§å¿…è¦ã§ã™ã€‚
"restrict 123.456.789.098"ã§ã“ã¡ã‚‰ãŒã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹æ™‚刻サーãƒãƒ¼/自サーãƒãƒ¼ã‚’時刻サーãƒãƒ¼ã¨ã—ã¦ã‚¢ã‚¯ã‚»ã‚¹ã—ã¦ãるサーãƒãƒ¼ã®IPを記述ã—ã¾ã™ã€‚サーãƒãƒ¼åã§æŒ‡å®šã™ã‚‹ã“ã¨ã‚‚出æ¥ã¾ã™ãŒã€hostsファイルã¸ã®å‚ç…§ãŒå¿…è¦ã«ãªã‚‹ã®ã§IPã®æ–¹ãŒæ—©ã„ã¨ã®ã“ã¨ã€‚
"server 123.456.789.098 minpoll 9 maxpoll 10"ã§æ™‚刻サーãƒãƒ¼ã¸ã®åŒæœŸé–“隔を指定ã—ã¾ã™ã€‚
"minpoll"ã§æœ€çŸé–“隔を指定ã—ã¾ã™ã€‚
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"driftfile /var/lib/ntp/drift"ã§ã¯è‡ªåˆ†ã®ã‚¯ãƒãƒƒã‚¯å‘¨æ³¢æ•°ã‚’記録ã—ã¦ãŠãファイルを指定ã—ã¾ã™ã€‚指定ã—ãŸæ™‚刻サーãƒãƒ¼ã«ã‚¢ã‚¯ã‚»ã‚¹ã§ããªã„å ´åˆã«ã¯è‡ªåˆ†ãŒä»®ã®æ™‚刻サーãƒãƒ¼ã«ãªã‚‹ã‹ã‚‰ã§ã™ã€‚ã“ã®ãƒ•ã‚¡ã‚¤ãƒ«ã¯æ¯Žæ™‚é–“æ›´æ–°ã•れã¾ã™ã€‚
RHEL3/4ã§ç¢ºèª
ntp.confã®æ›¸ã方。
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"restrict default ignore"ã§ã¾ãšã€ã©ã“ã‹ã‚‰ã®ã‚¢ã‚¯ã‚»ã‚¹ã‚‚æ‹’å¦ã—ã¾ã™ï¼ˆã¯ã˜ã‚ã«ä¸€åˆ‡åˆåˆ‡æ‹’å¦ã™ã‚‹ã®ã¯ã‚»ã‚ュリティè¨å®šã§ã¯ãµã¤ã†ã®ã“ã¨ã§ã™ï¼‰ã€‚
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"restrict 123.456.789.098"ã§ã“ã¡ã‚‰ãŒã‚¢ã‚¯ã‚»ã‚¹ã™ã‚‹æ™‚刻サーãƒãƒ¼/自サーãƒãƒ¼ã‚’時刻サーãƒãƒ¼ã¨ã—ã¦ã‚¢ã‚¯ã‚»ã‚¹ã—ã¦ãるサーãƒãƒ¼ã®IPを記述ã—ã¾ã™ã€‚サーãƒãƒ¼åã§æŒ‡å®šã™ã‚‹ã“ã¨ã‚‚出æ¥ã¾ã™ãŒã€hostsファイルã¸ã®å‚ç…§ãŒå¿…è¦ã«ãªã‚‹ã®ã§IPã®æ–¹ãŒæ—©ã„ã¨ã®ã“ã¨ã€‚
"server 123.456.789.098 minpoll 9 maxpoll 10"ã§æ™‚刻サーãƒãƒ¼ã¸ã®åŒæœŸé–“隔を指定ã—ã¾ã™ã€‚
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