[Lxc-users] reading hwclock from container

[Zhu Yanhai]

2011/12/18 DTK <gruessle at gmail.com>:
> I am trying to avoid having to install NTP in every container, so I
> came up with following idea.
>
> Main server cron job
>
>        * 0 *  * * /sbin/hwclock -w
>
> Each container has following cron job
>
>        10 0 *  * * /sbin/hwclock -s
>
> However, the container can't access /dev/rtc and I am guessing that
> has something to do with my cgroup config line:
>
>       lxc.cgroup.devices.allow = c 254:0 rwm # rtc
>
> Anyway I can fix this? Or get the same result some other way?
>
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IMHO if you just want to keep reading the same time on all the guests,
then you need to do nothing to achieve this, it's already there. Since
you are using one single setup of kernel and hardware. Running ntpd on
the guests is unnecessary.

--
Thanks,
Zhu Yanhai