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  • 1.  HMC v10 acting as NTP server

    Posted Tue April 11, 2023 09:49 AM

    In previous versions of the HMC we had the option to use the HMC as a NTP server for our LPARs, in addition to be a client and connect to a NTP server to obtain the correct time for the HMC itself. 
    After installing a new HMC with V10 R2 SP1030 I am only finding the option to use the HMC as a NTP client.  I am unable to find the option to use it as a NTP server for my LPARs.
    Does anyone know where I can find this option? 
    Or if it has been removed?  I hope not, because it was so easy and convenient to use.



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    Helle Koppang
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  • 2.  RE: HMC v10 acting as NTP server

    Posted Wed April 12, 2023 12:01 PM

    Can you please let know which HMC setting you are looking for? Any command or screenshot which is missing in 1030 would help us identifying the issue easily.

    Thanks,
    Vijay



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    Vijay Kumar Bana
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    Original Message


  • 3.  RE: HMC v10 acting as NTP server

    Posted Thu April 13, 2023 06:16 AM

    I a missing the "Enable NTP Service on this HMC".  See attached picture from the old HMC.



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    Helle Koppang
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    Original Message


  • 4.  RE: HMC v10 acting as NTP server

    IBM Champion
    Posted Thu April 13, 2023 05:09 AM

    On previous version there was no such option on the HMC.  Do you have the NTP port open on the HMC ?



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    José Pina Coelho
    IT Specialist at Kyndryl
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    Original Message


  • 5.  RE: HMC v10 acting as NTP server

    Posted Thu April 13, 2023 06:18 AM
    Edited by Helle Koppang Thu April 13, 2023 06:58 AM

    My previous HMC ran V10 R1 SP1020 and this is how NTP setup looked:


    As you can see my IBM i server used the HMC as an NTP server (this is an old log since we turned off logging after the initial setup):

     



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    Helle Koppang
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    Original Message


  • 6.  RE: HMC v10 acting as NTP server
    Best Answer

    IBM Champion
    Posted Thu April 13, 2023 07:26 AM

    The "Enable NTP on this HMC" check box is used only to decide if the NTP service (actually chronyd) is active or not.  On the latest HMC version, defining an NTP server automatically enables the NTP service.

    To be able to use the HMC as a time source, you have to configure at least one NTP server so that the HMC can get a time reference, and add NTP (123:udp) on the list of allowed incoming protocols on the network configuration of the external (LPAR communication) interface so that the LPARs can talk to it.

    Note that on version 10, a firewall rule is automatically added for each NTP server that you add, but you still have to add one per LPAR or a generic one to be able to use the NTP service.



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    José Pina Coelho
    IT Specialist at Kyndryl
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    Original Message


  • 7.  RE: HMC v10 acting as NTP server

    Posted Fri April 14, 2023 04:32 AM
    Edited by Vijay Kumar Bana Fri April 14, 2023 04:32 AM


    In 1030, from newdashboard, under HMC Settings we can see similar option (Use NTP server to manage date and time) to enable NTP.



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    Vijay Kumar Bana
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    Original Message


  • 8.  RE: HMC v10 acting as NTP server

    Posted Wed April 19, 2023 05:12 AM
    Edited by Helle Koppang Wed April 19, 2023 05:13 AM

    Yes, I have found the function to enable the HMC to act as a NTP client.  The confusion was that in the previous version I had the option to enable the HMC service, and I didn't find that option in the new version:


    But as José Pina Coelho said it is now automatically enabled when defining an NTP server. 

    Thank you for your reply.



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    Helle Koppang
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    Original Message