Dear all,

Does anybody have any insights to give us ?

Thanks a lot,

Christophe

From: Sarah PETER via FreeIPA-users <freeipa-users@lists.fedorahosted.org>
Sent: mercredi 18 décembre 2019 10:19
To: FreeIPA users list <freeipa-users@lists.fedorahosted.org>
Cc: Sarah PETER <sarah.peter@uni.lu>
Subject: [Freeipa-users] Sequence rollover

Dear all,

since a few days we get the following message about 1-2 times a day in the error logs of several of our replicas:

INFO - csngen_new_csn - Sequence rollover; local offset updated.

Is this something we should be worried about?

We ran the readNsState.py script from https://directory.fedoraproject.org/docs/389ds/howto/howto-fix-and-reset-time-skew.html and for one of the replicas it shows a big offset for the ipaca domain:

nsState is DwAAAAAAAABM4/ldAAAAAAoAAAAAAAAAngUAAAAAAABF0gAAAAAAAA==

Little Endian

For replica cn=replica,cn=dc\3Duni\2Cdc\3Dlu,cn=mapping tree,cn=config

  fmtstr=[H6x3QH6x]

  size=40

  len of nsstate is 40

  CSN generator state:

    Replica ID    : 15

    Sampled Time  : 1576657740

    Gen as csn    : 5df9e34c5382900150000

    Time as str   : Wed Dec 18 09:29:00 2019

    Local Offset  : 10

    Remote Offset : 1438

    Seq. num      : 53829

    System time   : Wed Dec 18 09:30:07 2019

    Diff in sec.  : 67

    Day:sec diff  : 0:67

nsState is RwQAAAAAAAD+DtVdAAAAAAsAAAAAAAAADgAAAAAAAAAFAAAAAAAAAA==

Little Endian

For replica cn=replica,cn=o\3Dipaca,cn=mapping tree,cn=config

  fmtstr=[H6x3QH6x]

  size=40

  len of nsstate is 40

  CSN generator state:

    Replica ID    : 1095

    Sampled Time  : 1574244094

    Gen as csn    : 5dd50efe000510950000

    Time as str   : Wed Nov 20 11:01:34 2019

    Local Offset  : 11

    Remote Offset : 14

    Seq. num      : 5

    System time   : Wed Dec 18 09:30:07 2019

    Diff in sec.  : 2413713

    Day:sec diff  : 27:80913

However, there has not been a message about time/clock skew or any other error messages for that matter. We are running CentOS 7.7 with ipa-server 4.6.5-11.

Best regards,

Sarah

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Sarah Peter

LCSB Bioinformatics Core & UL HPC Team

UNIVERSITÉ DU LUXEMBOURG

LUXEMBOURG CENTRE FOR SYSTEMS BIOMEDICINE

Campus Belval | Biotech II

6, avenue du Swing

L-4371 Belvaux

T +352 46 66 44 5360

sarah.peter@uni.lu http://lcsb.uni.lu

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