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Thread: Date/Time problem on a Zimbra Box

  1. #1
    rachid is offline Intermediate Member
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    Default Date/Time problem on a Zimbra Box

    Hello all,

    I'm not sure if the problem is with Zimbra, but i have installed Zimbra OS Edition on a virtual machine (HyperV) under CentOS 5.2 since 4 months ago. I have a problem with the Date/Time on the machine, i set the correct Date/Time, after few hours or days, i notice that mails have wrong tima or date, i check the date and in found that the Date/Time are not correct.

    Do you have any idea? It can comes from the HyperV ? From Zimbra?

    Info: I have an other Exchange server on a virtual machine on the same HyperV server and i dont have any Date/Time problem on that Exchange Server.

    Thank you for your help.

    Regards.

  2. #2
    phoenix is online now Zimbra Consultant & Moderator
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    Quote Originally Posted by rachid View Post
    Hello all,

    I'm not sure if the problem is with Zimbra,
    This isn't a Zimbra problem, it's a problem of running Linux under a VM.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    bradb21's Avatar
    bradb21 is offline Advanced Member
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    I know time drift issues are pretty common using VMware, and I assume the same probably applies to HyperV. This is most definitely not a Zimbra issue.
    Release 6.0.2_GA_1912.UBUNTU8_64 UBUNTU8_64 NETWORK edition + Mobile Option
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  4. #4
    bdial's Avatar
    bdial is offline Moderator
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    yeah not sure about hyperv but using esx paravirtualization with a vmi enabled linux kernel has eliminated time issues in linux guests for us

  5. #5
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    menno.pieters is offline Active Member
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    I've not tested this with HyperV, but in VMware, running an ntp daemon in the guest, may also work. However, do not forget to insert the option

    tinker panic 0

    As the first line of /etc/ntp.conf. Also, I assume there is something in HyperV similar to the VMware guest daemon, which allows you to synchronize the clock between host and guest.
    Menno Pieters
    IGI Group

  6. #6
    bradb21's Avatar
    bradb21 is offline Advanced Member
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    Quote Originally Posted by bdial View Post
    yeah not sure about hyperv but using esx paravirtualization with a vmi enabled linux kernel has eliminated time issues in linux guests for us
    I've seen similar results with a machine I had time issues with, that I've upgraded to a VMI enable kernel and turned on VMI in the VM settings for the virtual machine and my time issues went away.
    Release 6.0.2_GA_1912.UBUNTU8_64 UBUNTU8_64 NETWORK edition + Mobile Option
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  7. #7
    rachid is offline Intermediate Member
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    Thank you,
    I just installed the NTP daemon on the guest, i will monitor that for a couple of days and let you know.

    Thank you verry much

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