Time jumping forward on NTP failure

Posted by Dan on Ask Ubuntu See other posts from Ask Ubuntu or by Dan
Published on 2012-03-20T12:03:55Z Indexed on 2012/03/20 23:40 UTC
Read the original article Hit count: 335

Filed under:

server

|

time

|

xen

|

ntp

I have been having some weird problems with NTP for a while.

If I use ntpdate to set the time then it sets fine. ntpd then invariably fails to find a server (I have loads configured) and decides to set the clock forward about 5 hours.

It's a Xen server with dom0 set to a different timezone so I'm not sure if that is interfering with it.

How can I make sure I ignore the dom0 time and have ntpd not change the time if it fails to reach a time server?

EDIT: I now do not think it is ntpd giving me problems, I turned ntpd off and it jumped forward seemingly randomly.

© Ask Ubuntu or respective owner

Related posts about server

SQL SERVER – Server Side Paging in SQL Server 2011 Performance Comparison

as seen on SQL Authority - Search for 'SQL Authority'
Earlier, I have written about SQL SERVER – Server Side Paging in SQL Server 2011 – A Better Alternative. I got many emails asking for performance analysis of paging. Here is the quick analysis of it. The real challenge of paging is all the unnecessary IO reads from the database. Network traffic was… >>> More
Should I switch my server to Ubuntu Server from Windows Server 2003

as seen on Server Fault - Search for 'Server Fault'
I have a server thats primarily used for SRCDS, I host a few Team Fortress 2 servers on it and I would much prefer a ssh-like (more so the no-gui part) for something like this, mostly because I can't navigate with my phone on VNC very well and also because there really is no need for a gui in this… >>> More
Windows web server and SQL Server on same dedicated server

as seen on Server Fault - Search for 'Server Fault'
I'm currently trying to decide on the best approach to handle hosting a few moderate traffic websites for production e-commerce and online applications. We'd like to move to a dedicated server and are looking at this as the most likely machine: Quad Core Intel Core2Quad Q9550 Processor, 2.83 Ghz… >>> More
Windows 7 Desktop/Start Menu Redirection: Server O/S: Windows Server 2003 And Server 2008

as seen on Super User - Search for 'Super User'
Hi, I am new here so I am might be asking a question which has already been answered [however I can't see it in the suggested answers above] I manage a network which is split into a parent domain and a child domain. Recently I have been looking at when to migrate to Windows 7. The child domain… >>> More
Windows 7 Desktop/Start Menu Redirection: Server O/S: Windows Server 2003 And Server 2008

as seen on Server Fault - Search for 'Server Fault'
Hi, I am new here so I am might be asking a question which has already been answered [however I can't see it in the suggested answers above] I manage a network which is split into a parent domain and a child domain. Recently I have been looking at when to migrate to Windows 7. The child domain… >>> More

Related posts about time

monkey patching time.time() in python

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello guys, I've an application where, for testing, I need to replace the time.time() call with a specific timestamp, I've done that in the past using ruby (code available here: http://github.com/zemariamm/Back-to-Future/blob/master/back_to_future.rb ) However I do not know how to do this using… >>> More
Get time zone or local time from cell tower (GPRS)

as seen on Stack Overflow - Search for 'Stack Overflow'
I have been asked to set the system time of a Windows Mobile 6.0 handheld to the "local time." The local time in this case means the current time of the time zone the handheld is physically located in. Is there a way to request the local time from the GPRS cell tower? >>> More
jQuery Time Entry with Time Navigation Keys

as seen on West-Wind - Search for 'West-Wind'
So, how do you display time values in your Web applications? Displaying date AND time values in applications is lot less standardized than date display only. While date input has become fairly universal with various date picker controls available, time entry continues to be a bit of a non-standardized… >>> More
Time Warp

as seen on Geeks with Blogs - Search for 'Geeks with Blogs'
It’s no secret that daylight savings time can wreak havoc on systems that rely heavily on dates. The system I work on is centered around recording dates and times, so naturally my co-workers and I have seen our fair share of date-related bugs. From time to time, however, we come across something that… >>> More
ffmpeg - How to determine if -movflags faststart is enabled? PHP

as seen on Stack Overflow - Search for 'Stack Overflow'
While I am able to encode an mp4 file which I can plan on my local windows machine, I am having trouble encoding files to mp4 which are readable when streaming by safari, etc. After a bit of reading, I believe my issue is that I must move the metadata from the end of the file to the beginning in… >>> More