why NTP synchronized: no?. how i fix this problem and what is mean that ?


timedatectl | grep NTP
NTP enabled: yes
NTP synchronized: no

probably your time is too different. ntp only makes small adjustments, not big ones. try setting your time manually then check if ntp can then sync it.

You don't provide us any details, such as version/distro of Linux, or tell us anything about your current NTP configuration; we can't guess. If you provide details we can try to help. You may not have an NTP pool set up, your firewall is blocking it, or your internal time source is down. Again, you provide no details.

And if you don't know what NTP is, or even what the problem means, why are you trying to fix it?? Your administrator can help you.

why NTP synchronized: no?. how i fix this problem and what is mean that ?


timedatectl | grep NTP
NTP enabled: yes
NTP synchronized: no

I am using CentOS 7 minimal version and using the command line in MobaXtream. please help to solve this problem.

i was trying so many time. but NTP synchronize is always NO. please help me

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that is windows, not centos. I guess you need to choose a different time server (which is most probably not that far from where you are).

Posting the same thing again doesn't tell us anything new.
You posted settings on a WINDOWS Machine....not Linux. Again, we need to know how you have the LINUX system configured if you want help with Linux. Again, as you were advised before, if your time settings are vastly different than the NTP server, things won't sync initially.

And if you really did 'try so many times', it's hard to believe you couldn't put "how to configure ntp on centos 7" into Google, and read the VERY FIRST HIT:
https://www.thegeekdiary.com/centos-...er-and-client/

...which has complete instructions. If you're not going to read the answers you get or post responses to questions, there isn't going to be anything folks will be able to help you with. Read the LQ Rules and "Question Guidelines"

what should i do?
my time-server not synchronize
and I am also not configure my NTP
please help me

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in your last post there is a syntax error.
First of all you should answer to the questions. Otherwise we won't be able to tell you anything useful.

How is it related to windows? Are these hosts connected to the network?
Did you try another ntp server already?

Bunch of screenshots, what a mess.
Anyhow, the last one says that there's a syntax error in /etc/ntp.conf on line 18.
Also check /var/log/ntp.log.

Sorry, but are you not reading or understanding what you're being told and asked??? Posting screenshots of your Windows system is pointless, since you are AGAIN asking about Linux. And again, posting the same things over and over saying "help me" is also pointless.

Again:

• Is your firewall blocking NTP access to the servers?
• Can you actually use those servers on your Windows system??
• How far is the date/time from the actual time and have you tried manually syncing it??
• Have you actually opened/read/understood the simple step-by-step guide that was looked up for you and given to you???

You say you've been working on this for a long time...which is very hard to believe since you can't tell us any answers to any of the questions that would have come up if you have been working on it and doing any research.

Again: answer the questions asked. Don't post screen-shots, and posting ANYTHING about your Windows system is meaningless, since *YOU ARE ASKING ABOUT LINUX NOT WINDOWS*

The last screenshot shows a Windows machine running an instance of CentOS 7 in VMware.
Looks to me like the OP is trying to get the CentOS instance to synchronise with NTP.
I would have thought that the simplest approach would be to let Windows handle the time synchronisation and get the VMware instance to use the time from the local machine.

Still dunno why OP is concerned about ntp sync either. Maybe just having a timezone issue? Or virtual machine may be the UTC thing; virtualbox has a checkbox "hardware clock in UTC time"; vmware probably has something similar, maybe got the check wrong.

Agreed, but they may be doing this as an exercise, or have a specific need; no information from the OP either way. To me, the only ways that NTP is going to fail are:

• No connection to a time reference source (typically an Internet pool).
• Time on server is too skewed to make an adjustment to NTP

So either it's a networking issue, or the time on the server is too far off. From the screen-shot posted, it says they're using an Internet pool, and if they tried a simple diagnostic of just pinging that time pool, they could know if it was reachable or not.

I believe that VMWare is capable of providing the time to its guests.