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March 2016

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Subject:
From:
John Pilkington <[log in to unmask]>
Reply To:
John Pilkington <[log in to unmask]>
Date:
Wed, 9 Mar 2016 08:41:42 +0000
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On 09/03/16 05:35, Antonio Querubin wrote:

<snip>

>> A 7 second variance shouldn't be that much of an issue.
>
> A time offset greater than a fraction of second suggests ntpd really
> isn't time-synced.
>
> Not sure if this is related but I've found that ntpd on SL7 systems dies
> during bootup and require a manual start (using an unchanged ntp.conf).
> This is what I see immediately after doing a fresh boot of a SL7 system:
>
> $ sudo systemctl status ntpd
> ● ntpd.service - Network Time Service
>     Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled;
> vendor preset: disabled)
>     Active: inactive (dead)
> $ sudo systemctl restart ntpd
> $ sudo systemctl status ntpd
> ● ntpd.service - Network Time Service
>     Loaded: loaded (/usr/lib/systemd/system/ntpd.service; enabled;
> vendor preset: disabled)
>     Active: active (running) since Tue 2016-03-08 19:22:28 HST; 3s ago
>    Process: 2417 ExecStart=/usr/sbin/ntpd -u ntp:ntp $OPTIONS
> (code=exited, status=0/SUCCESS)
>   Main PID: 2418 (ntpd)
>     CGroup: /system.slice/ntpd.service
>             └─2418 /usr/sbin/ntpd -u ntp:ntp -g
>
<snip>

> Mar 08 19:22:29 sl7-dev ntpd[2418]: 0.0.0.0 c016 06 restart
> Mar 08 19:22:29 sl7-dev ntpd[2418]: 0.0.0.0 c012 02 freq_set kernel
> -0.605 PPM
> Mar 08 19:22:29 sl7-dev ntpd[2418]: 0.0.0.0 c615 05 clock_sync
>
>
> If the mirror masters are running SL7 and ntpd is enabled for time sync,
> somebody may want to verify that ntpd really is running on them.
>
>
> Antonio Querubin
> e-mail:  [log in to unmask]
>
> xmpp:  [log in to unmask]

But doesn't SL7 use chrony?

$ systemctl status chronyd
● chronyd.service - NTP client/server
    Loaded: loaded (/usr/lib/systemd/system/chronyd.service; enabled; 
vendor preset: enabled)
    Active: active (running) since Wed 2016-03-02 17:43:02 GMT; 6 days ago
  Main PID: 767 (chronyd)
    CGroup: /system.slice/chronyd.service
            └─767 /usr/sbin/chronyd

John P

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