Forum Discussion
yuanqiang_22112
Nimbostratus
Nimbostratusntp 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 ?
yes, for 'ntpd' non-core daemon status, it will show "running" & its expected. Need not to worry..!!
yuanqiang_22112
Yann_Desmarest_Nacreous
Hello,
It looks like that some services restarted and they have an uptime of 1 hour. But the history message indicating running... Is normal for ntp
- yuanqiang_221123Q
- Yann_Desmarest
Cirrus
Hello,
It looks like that some services restarted and they have an uptime of 1 hour. But the history message indicating running... Is normal for ntp
- yuanqiang_221123Q
- Ajay_102032
yes, for 'ntpd' non-core daemon status, it will show "running" & its expected. Need not to worry..!!
- yuanqiang_22112yeah,3Q
- yuanqiang_22112Ajay ,I found the ntp server not work ,I add more NTP SERVER to the list ,but time still wrong ! F5 can reach to these NTP servers ,how can troubleshooting ?
- Ajay_102032lb will use the mgmt interface to reach ntp server ..do a trace & capture tcpdump to see 123 traffic (UDP). Do some checks as in https://support.f5.com/kb/en-us/solutions/public/10000/200/sol10240.html see if you can sort it out with the test result as stated in above url. There are multiple reasons depending upon your infrastructure. is 123 allowed in firewall is in between f5 & ntp server ?
MathewTry adding a management route and make sure the NTP server is reachable.
- yuanqiang_22112
- yuanqiang_22112
- Your output shows a stratum of 16 (st). This indicates that your box can't sync with the specified ntp server. Try restarting the ntp daemon. show /sys service ntpd restart /sys service ntpd
- yuanqiang_22112@niels vlan sluis ,I have accorded to what you said to operate,the result is the same still . I do the experiment in the VE platform.
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
