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Questions tagged [ntp]

NTP stands for Network Time Protocol, and it is an Internet protocol used to synchronize the clocks of computers to some time reference.

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ntpdate: no server suitable for synchronization found [NO FIREWALL]

I have a private NTP server which again get its time from upstream NTPs and provide ntp service for the LAN. Time of server: Mon Dec 10 12:05:37 CET 2018 Time of client: Mon Dec 10 12:05:37 CET 2018 Running with: ntpdate -dv 10.0.0.1 10 Dec…
murdock5x
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Decentralized NTP in network with only sporadic internet connectivity?

I have a (most of the time) isolated network consisting of several computers. computer 0 -- external NTP server / switch -- computer 1 -- external NTP server \ computer n -- external NTP server Only a small…
Bloops
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How do I update my machine time when there is a local ntpd server reference in ntpd.conf

My FreeIPA server's datetime had drifted about 10 min causing login failures. The ntpd service was functioning up and running. I checked the configuration and noticed that freeIPA had added a local server to synchronize the time in my ntpd.conf…
Kevin Vasko
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Domain Controller time won't sync with NTP server

I'm having a problem with a domain controller which won't sync with a time server. I've tried everything I can think of and I've already googled many fixes, but nothing seems to work. This is a HyperV virtual machine which is a domain controller for…
John
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Nagios NTP Time: UNKNOWN: Lookup failure for host $ARG1$ (us.pool.ntp.org)

We are currently utilizing Nagios to monitor our production servers at my workplace. Our Nagios instance is configured on a Linux server where we monitor both Linux and Windows machines. I have been experiencing the following Nagios issue regarding…
MotoDave452
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W2016 DC cannot sync time with external source

im having problems getting my DC (PDC Role as it is the only DC in the network) to sync time with an external ntp server. My Server is running Windows Server 2016 x64 fully patched. The Windows Firewall is completely disabled just to rule out…
Alkahna
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How to get the NTP offset and delay values in Windows systems

I've a Linux server where I can get the delay and offset values for a certain peer using the ntpq command: $ ntpq -nc peers remote refid st t when poll reach delay offset …
dig_123
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Chrony reporting system time slower than NTP and growing

I have chrony running on several of my instances. Unfortuantely, on one of them, it keeps reporting that the system time is slower than NTP time. This number of seconds keeps growing at a rate of about 10 seconds per minute. Here is one…
checklist
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Chrony synchronization

After I configured chrony service on my CentOS 7.3 to point to the active directory, it shows below > chronyc sources 210 Number of sources = 1 MS Name/IP address Stratum Poll Reach LastRx Last…
Lan
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NTP is running, Clock not synced. Manual DOES work

An ubuntu server is running ntp, and connected to the internet. Still, the system clock is about 30 minutes wrong and gets bigger over time. $ service ntp status NTP server is running.. Output of ntpq -p remote refid st t when poll…
ThomasVdB
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ntp.conf: Is it reasonable to rely on default server list, exposed in CentOS?

Every time I setup a new Linux host (CentOS, lately), expecially when such an host will have some roles within our small datacenter (around 100 hosts), I take care to: install the ntp package; add, on top of the server list, a new server instance…
Damiano Verzulli
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Enable NTP with clock slewing on RHEL6

I have a RHEL6 server running an Oracle database. When the server was built, NTP wasn't enabled or configured. My task is to do that without impacting the database. After doing some research, I was under the assumption that, when enabling NTP on…
bzinger
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Windows clients not syncing time

I have a basic Windows network and the workstations are not syncing time. I have read and followed the advice in the article below without success: How to change time source from "Local CMOS Clock" to "DC" C:\>w32tm /query /source Local CMOS…
Dercni
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Why is NTP out of sync on servers that are hosted on Digital Ocean since the daylight saving time?

Since the daylight saving time the Sensu monitor indicates that the NTP of multiple servers that run on Digital Ocean (DO) are out of sync (12.345404ms-98.338222ms): CheckNTP WARNING: NTP offset by 34.073039ms Discussion Perhaps the NTP…
030
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SSHD, NTPD slow to respond

My server has been responding very slowly ever since I put it into production, however it's not slow how you might think. When I SSH to the physical virtualization server I receive the typical login as: prompt. When I type my UN in, it takes and…
Alex Manley
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