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yuanqiang_22112's avatar
yuanqiang_22112
Icon for Nimbostratus rankNimbostratus
May 14, 2016

ntp question

Hello everyone: I configure NTP server ,F5 services display list ntp is running ,but other servers is running for 1 hours! If ntp display is normal ?  
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  • Ajay_102032's avatar
    Ajay_102032
    May 14, 2016

    yes, for 'ntpd' non-core daemon status, it will show "running" & its expected. Need not to worry..!!

     

Niels_van_Sluis's avatar
Niels_van_Sluis
Icon for MVP rankMVP
May 16, 2016

Also make sure that NTP traffic isn't blocked by any firewall. Below some sample commands and output to troubleshoot your NTP problem.

[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  tmsh show /sys service ntpd
ntpd (pid  27976) is running...
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  tmsh stop /sys service ntpd
Shutting down ntpd: [  OK  ]
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  tcpdump -nni 0.0:nnn host 192.168.1.5 and port 123 &
[1] 30708
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on 0.0:nnn, link-type EN10MB (Ethernet), capture size 96 bytes

[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  ntpdate -q 192.168.1.5
10:25:22.453506 IP 10.10.10.10.33999 > 192.168.1.5.123: NTPv4, Client, length 48
10:25:22.468377 IP 192.168.1.5.123 > 10.10.10.10.33999: NTPv4, Server, length 48
10:25:22.469014 IP 10.10.10.10.33999 > 192.168.1.5.123: NTPv4, Client, length 48
10:25:23.453751 IP 10.10.10.10.33999 > 192.168.1.5.123: NTPv4, Client, length 48
10:25:23.468290 IP 192.168.1.5.123 > 10.10.10.10.33999: NTPv4, Server, length 48
10:25:24.453573 IP 10.10.10.10.33999 > 192.168.1.5.123: NTPv4, Client, length 48
server 192.168.1.5, stratum 1, offset 0.000086, delay 0.04105
16 May 10:25:25 ntpdate[30728]: adjust time server 192.168.1.5 offset 0.000086 sec
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  jobs
[1]+  Running                 tcpdump -nni 0.0:nnn host 192.168.1.5 and port 123 &
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  kill %1

6 packets captured
6 packets received by filter
0 packets dropped by kernel
[1]+  Done                    tcpdump -nni 0.0:nnn host 192.168.1.5 and port 123
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  tmsh start /sys service ntpd
Starting ntpd: [  OK  ]
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  tmsh show /sys service ntpd
ntpd (pid  30809) is running...
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config  ntpq -np
     remote           refid      st t when poll reach   delay   offset  jitter
==============================================================================
*192.168.1.5   .PPS.            1 u    3   64    1   14.151   -0.303   0.298
[root@nielsvs-bigip:ModuleNotLicensed:Active:Standalone] config