Bug 163862
Summary: | ntp as a server doesn't allow client sync | ||||||
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Product: | Red Hat Enterprise Linux 4 | Reporter: | Jeff Brown <jabrown> | ||||
Component: | ntp | Assignee: | Petr Raszyk <praszyk> | ||||
Status: | CLOSED CURRENTRELEASE | QA Contact: | Brian Brock <bbrock> | ||||
Severity: | medium | Docs Contact: | |||||
Priority: | medium | ||||||
Version: | 4.0 | CC: | tomek | ||||
Target Milestone: | --- | ||||||
Target Release: | --- | ||||||
Hardware: | i386 | ||||||
OS: | Linux | ||||||
Whiteboard: | |||||||
Fixed In Version: | ntp-4.2.0.a.20050816 Release 10 | Doc Type: | Bug Fix | ||||
Doc Text: | Story Points: | --- | |||||
Clone Of: | Environment: | ||||||
Last Closed: | 2005-11-09 15:27:43 UTC | Type: | --- | ||||
Regression: | --- | Mount Type: | --- | ||||
Documentation: | --- | CRM: | |||||
Verified Versions: | Category: | --- | |||||
oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||
Cloudforms Team: | --- | Target Upstream Version: | |||||
Embargoed: | |||||||
Attachments: |
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Description
Jeff Brown
2005-07-21 17:12:59 UTC
More packet traces - I changed the ntp.conf on the server to point at RedHat's NTP servers. ######### ntptrace ww11 on the client side ############# ghost:~ # ntptrace ww11 ww11: stratum 2, offset 0.000711, synch distance 0.069203 clock2.redhat.com: stratum 1, offset 0.000000, synch distance 0.000489, refid 'CDMA' ~ and ~ ghost:~ # ntpq -pn remote refid st t when poll reach delay offset jitter ============================================================================== *127.127.1.0 LOCAL(0) 10 l 15 64 377 0.000 0.000 0.002 172.18.2.30 .INIT. 16 u - 64 0 0.000 0.000 4000.00 ######### ntp server tcpdump -vvvntXs 1512 udp port 123 ########## [root@ww11 ~]# tcpdump -vvvnttXs 1512 udp port 123 and host 172.17.217.55 tcpdump: listening on eth0, link-type EN10MB (Ethernet), capture size 1512 bytes 1122906862.019440 IP (tos 0x0, ttl 241, id 59830, offset 0, flags [DF], proto 17, length: 40) 172.17.217.55.2556 > 172.18.2.30.ntp: [udp sum ok] NTPv2, length 12 Reserved, Leap indicator: (0), Stratum 2, poll 0s, precision 1 Root Delay: 0.000000, Root dispersion: 0.000000 [|ntp] 0x0000: 4500 0028 e9b6 4000 f111 6c94 ac11 d937 E..(..@...l....7 0x0010: ac12 021e 09fc 007b 0014 abd2 1602 0001 .......{........ 0x0020: 0000 0000 0000 0000 0000 0000 0000 .............. 1122906862.019587 IP (tos 0x10, ttl 64, id 1360, offset 0, flags [DF], proto 17, length: 420) 172.18.2.30.ntp > 172.17.217.55.2556: [bad udp cksum e843!] NTPv2, length 392 Reserved, Leap indicator: (0), Stratum 130, poll 0s, precision 1 Root Delay: 1620.000000, Root dispersion: 0.005767, Reference-ID: 118.101.114.115 Reference Timestamp: 1768910397.134497907 (1956/01/21 04:59:57) Originator Timestamp: 1679832110.196017287 (1953/03/26 05:01:50) Receive Timestamp: 1076964913.192278872 (1934/02/16 13:55:13) Transmit Timestamp: 1914719599.430180513 (1960/09/03 19:33:19) Originator - Receive Timestamp: -602867197.003738415 Originator - Transmit Timestamp: +234887489.234163225 0x0000: 4510 01a4 0550 4000 4011 0070 ac12 021e E....P@.@..p.... 0x0010: ac11 d937 007b 09fc 0190 351b 1682 0001 ...7.{....5..... 0x0020: 0654 0000 0000 017a 7665 7273 696f 6e3d .T.....zversion= 0x0030: 226e 7470 6420 342e 322e 3061 4031 2e31 "ntpd.4.2.0a 0x0040: 3139 302d 7220 4d6f 6e20 4f63 7420 3131 190-r.Mon.Oct.11 0x0050: 2030 393a 3130 3a32 3020 4544 5420 3230 .09:10:20.EDT.20 0x0060: 3034 2028 3129 222c 0d0a 7072 6f63 6573 04.(1)",..proces 0x0070: 736f 723d 2269 3638 3622 2c20 7379 7374 sor="i686",.syst 0x0080: 656d 3d22 4c69 6e75 782f 322e 362e 392d em="Linux/2.6.9- 0x0090: 3131 2e45 4c73 6d70 222c 206c 6561 703d 11.ELsmp",.leap= 0x00a0: 302c 2073 7472 6174 756d 3d32 2c0d 0a70 0,.stratum=2,..p 0x00b0: 7265 6369 7369 6f6e 3d2d 3230 2c20 726f recision=-20,.ro 0x00c0: 6f74 6465 6c61 793d 3633 2e34 3237 2c20 otdelay=63.427,. 0x00d0: 726f 6f74 6469 7370 6572 7369 6f6e 3d33 rootdispersion=3 0x00e0: 372e 3438 392c 2070 6565 723d 3333 3231 7.489,.peer=3321 0x00f0: 322c 0d0a 7265 6669 643d 3636 2e31 3837 2,..refid=66.187 0x0100: 2e32 3234 2e34 2c20 7265 6674 696d 653d .224.4,.reftime= 0x0110: 3078 6336 3938 6230 3233 2e63 6332 6263 0xc698b023.cc2bc 0x0120: 3732 652c 2070 6f6c 6c3d 3130 2c0d 0a63 72e,.poll=10,..c 0x0130: 6c6f 636b 3d30 7863 3639 3862 3136 652e lock=0xc698b16e. 0x0140: 3035 3031 6230 3033 2c20 7374 6174 653d 0501b003,.state= 0x0150: 342c 206f 6666 7365 743d 302e 3731 312c 4,.offset=0.711, 0x0160: 2066 7265 7175 656e 6379 3d33 322e 3238 .frequency=32.28 0x0170: 332c 0d0a 6e6f 6973 653d 3130 2e34 3136 3,..noise=10.416 0x0180: 2c20 6a69 7474 6572 3d31 2e31 3339 2c20 ,.jitter=1.139,. 0x0190: 7374 6162 696c 6974 793d 3233 2e31 3338 stability=23.138 0x01a0: 0d0a 0000 .... 1122906862.027684 IP (tos 0x0, ttl 241, id 2426, offset 0, flags [DF], proto 17, length: 40) 172.17.217.55.2557 > 172.18.2.30.ntp: [udp sum ok] NTPv2, length 12 Reserved, Leap indicator: (0), Stratum 1, poll 0s, precision 1 Root Delay: 0.506774, Root dispersion: 0.000000 [|ntp] 0x0000: 4500 0028 097a 4000 f111 4cd1 ac11 d937 E..(.z@...L....7 0x0010: ac12 021e 09fd 007b 0014 2a16 1601 0001 .......{..*..... 0x0020: 0000 81bc 0000 0000 0000 0000 0000 .............. 1122906862.027802 IP (tos 0x10, ttl 64, id 1361, offset 0, flags [DF], proto 17, length: 452) 172.18.2.30.ntp > 172.17.217.55.2557: [bad udp cksum ce3c!] NTPv2, length 424 Reserved, Leap indicator: (0), Stratum 161, poll 0s, precision 1 Root Delay: 38420.506774, Root dispersion: 0.006286, Reference-ID: 115.114.99.97 Reference Timestamp: 1685208374.211642337 (1953/05/27 10:26:14) Originator Timestamp: 925774386.203830013 (1929/05/03 16:33:06) Receive Timestamp: 544436835.439200547 (1917/04/03 01:27:15) Transmit Timestamp: 1026634291.172369268 (1932/07/14 01:11:31) Originator - Receive Timestamp: -381337550.764629466 Originator - Transmit Timestamp: +100859904.968539254 0x0000: 4510 01c4 0551 4000 4011 004f ac12 021e E....Q@.@..O.... 0x0010: ac11 d937 007b 09fd 01b0 353b 16a1 0001 ...7.{....5;.... 0x0020: 9614 81bc 0000 019c 7372 6361 6472 3d36 ........srcadr=6 0x0030: 362e 3138 372e 3232 342e 342c 2073 7263 6.187.224.4,.src 0x0040: 706f 7274 3d31 3233 2c20 6473 7461 6472 port=123,.dstadr 0x0050: 3d31 3732 2e31 382e 322e 3330 2c20 6473 =172.18.2.30,.ds 0x0060: 7470 6f72 743d 3132 332c 0d0a 6c65 6170 tport=123,..leap 0x0070: 3d30 2c20 7374 7261 7475 6d3d 312c 2070 =0,.stratum=1,.p 0x0080: 7265 6369 7369 6f6e 3d2d 3136 2c20 726f recision=-16,.ro 0x0090: 6f74 6465 6c61 793d 302e 3030 302c 2072 otdelay=0.000,.r 0x00a0: 6f6f 7464 6973 7065 7273 696f 6e3d 302e ootdispersion=0. 0x00b0: 3435 382c 0d0a 7265 6669 643d 4344 4d41 458,..refid=CDMA 0x00c0: 2c20 7265 6163 683d 3078 6666 2c20 756e ,.reach=0xff,.un 0x00d0: 7265 6163 683d 302c 2068 6d6f 6465 3d33 reach=0,.hmode=3 0x00e0: 2c20 706d 6f64 653d 342c 2068 706f 6c6c ,.pmode=4,.hpoll 0x00f0: 3d31 302c 2070 706f 6c6c 3d31 302c 0d0a =10,.ppoll=10,.. 0x0100: 666c 6173 683d 3078 302c 206b 6579 6964 flash=0x0,.keyid 0x0110: 3d30 2c20 7474 6c3d 302c 206f 6666 7365 =0,.ttl=0,.offse 0x0120: 743d 302e 3731 312c 2064 656c 6179 3d36 t=0.711,.delay=6 0x0130: 332e 3432 372c 0d0a 6469 7370 6572 7369 3.427,..dispersi 0x0140: 6f6e 3d31 342e 3835 372c 206a 6974 7465 on=14.857,.jitte 0x0150: 723d 312e 3133 392c 2072 6566 7469 6d65 r=1.139,.reftime 0x0160: 3d30 7863 3639 3862 3031 372e 3437 3630 =0xc698b017.4760 0x0170: 3662 3761 2c0d 0a6f 7267 3d30 7863 3639 6b7a,..org=0xc69 0x0180: 3862 3032 332e 6334 3362 6637 3237 2c20 8b023.c43bf727,. 0x0190: 7265 633d 3078 6336 3938 6230 3233 2e63 rec=0xc698b023.c 0x01a0: 6332 6263 3732 652c 0d0a 786d 743d 3078 c2bc72e,..xmt=0x 0x01b0: 6336 3938 6230 3233 2e62 6263 6137 3530 c698b023.bbca750 0x01c0: 332c 0d0a 3,.. 1122906862.027843 IP (tos 0x10, ttl 64, id 1362, offset 0, flags [DF], proto 17, length: 224) 172.18.2.30.ntp > 172.17.217.55.2557: [bad udp cksum aaf1!] NTPv2, length 196 Reserved, Leap indicator: (0), Stratum 129, poll 0s, precision 1 Root Delay: 38420.506774, Root dispersion: 412.002761, Reference-ID: 102.105.108.116 Reference Timestamp: 1684368481.473588956 (1953/05/17 17:08:01) Originator Timestamp: 858666035.125827144 (1927/03/18 23:20:35) Receive Timestamp: 892346423.192111086 (1928/04/11 19:00:23) Transmit Timestamp: 540619822.203935635 (1917/02/17 21:10:22) Originator - Receive Timestamp: +33680388.066283941 Originator - Transmit Timestamp: -318046212.921891508 0x0000: 4510 00e0 0552 4000 4011 0132 ac12 021e E....R@.@..2.... 0x0010: ac11 d937 007b 09fd 00cc 3457 1681 0001 ...7.{....4W.... 0x0020: 9614 81bc 019c 00b5 6669 6c74 6465 6c61 ........filtdela 0x0030: 793d 2036 332e 3433 2036 352e 3530 2037 y=.63.43.65.50.7 0x0040: 312e 3130 2039 342e 3435 2036 322e 3538 1.10.94.45.62.58 0x0050: 2036 332e 3332 2036 332e 3037 2036 322e .63.32.63.07.62. 0x0060: 3730 2c0d 0a66 696c 746f 6666 7365 743d 70,..filtoffset= 0x0070: 2030 2e37 3120 2d30 2e34 3320 352e 3831 .0.71.-0.43.5.81 0x0080: 202d 3136 2e38 3020 2d30 2e33 3520 2d31 .-16.80.-0.35.-1 0x0090: 2e33 3620 2d30 2e35 3320 2d30 2e32 372c .36.-0.53.-0.27, 0x00a0: 0d0a 6669 6c74 6469 7370 3d20 302e 3032 ..filtdisp=.0.02 0x00b0: 2031 352e 3431 2033 302e 3738 2034 362e .15.41.30.78.46. 0x00c0: 3134 2036 312e 3532 2037 362e 3838 2039 14.61.52.76.88.9 0x00d0: 322e 3235 2031 3037 2e36 330d 0a00 0000 2.25.107.63..... 1122906869.384222 IP (tos 0x10, ttl 241, id 18738, offset 0, flags [DF], proto 17, length: 76) 172.17.217.55.ntp > 172.18.2.30.ntp: [udp sum ok] NTPv4, length 48 Client, Leap indicator: (0), Stratum 11, poll 6s, precision -19 Root Delay: 0.000000, Root dispersion: 0.449218, Reference-ID: 127.127.1.0 Reference Timestamp: 3331895669.388514999 (2005/08/01 08:34:29) Originator Timestamp: 0.000000000 Receive Timestamp: 0.000000000 Transmit Timestamp: 3331895669.388606999 (2005/08/01 08:34:29) Originator - Receive Timestamp: 0.000000000 Originator - Transmit Timestamp: 3331895669.388606999 (2005/08/01 08:34:29) 0x0000: 4510 004c 4932 4000 f111 0ce5 ac11 d937 E..LI2@........7 0x0010: ac12 021e 007b 007b 0038 7ee1 230b 06ed .....{.{.8~.#... 0x0020: 0000 0000 0000 7300 7f7f 0100 c698 b175 ......s........u 0x0030: 6375 b813 0000 0000 0000 0000 0000 0000 cu.............. 0x0040: 0000 0000 c698 b175 637b bf93 .......uc{.. 6 packets captured 6 packets received by filter 0 packets dropped by kernel ########## ntptrace on the server side ############# [root@ww11 ~]# ntptrace localhost.localdomain: stratum 2, offset 0.000711, synch distance 0.073882 clock2.redhat.com: stratum 1, offset 0.000000, synch distance 0.000390, refid 'CDMA' [root@ww11 ~]# ntpq -pn remote refid st t when poll reach delay offset jitter ============================================================================== *66.187.224.4 .CDMA. 1 u 649 1024 377 63.427 0.711 1.139 +66.187.233.4 .CDMA. 1 u 602 1024 377 109.160 -22.746 24.517 +209.132.176.4 .CDMA. 1 u 598 1024 377 70.643 -3.480 4.149 127.127.1.0 LOCAL(0) 10 l 22 64 377 0.000 0.000 0.001 Created attachment 120843 [details]
Fixed in ntp-4.2.0.a.20050816-10.src.rpm
Fixed. Try to install *.src.rpm above.
Tested using your ntp.conf file.
(But, remove 'ignore' at line 'restrict default ignore' or
add your IP-address (where you want to launch 'ntpdate'):
restrict 'your-ip-address' 255.255.255.255 nomodify notrap noquery
server 'your-ip-address'
)
Tested using default-ntp.conf-file (remove following lines):
server 0.pool.ntp.org
server 1.pool.ntp.org
server 2.pool.ntp.org
NOTE: you cannot run 'ntpdate' with -b flag on the same machine, where
your 'ntpd' is running.
In this case, you receive a message:
ntpdate[32091]: the NTP socket is in use, exiting
On the same machine you can run 'ntpdate' with -d flag only
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