Schedule unattended-upgrades once per month

[mian.hou at canonical.com]

Hi Roy,

Thanks for your helpful comment.

My problem here is that, apt-daily.timer invoke apt-daily.servcie which 
depends on /usr/lib/apt/apt.systemd.daily, apt.systemd.daily will do its 
job according to /etc/apt/apt.conf.d/20auto-upgrades and 
/etc/apt/apt.conf.d/50unattended-upgrades.

It's a dilemma because if I want to make apt-daily.timer function, I 
have to make the underlying /usr/lib/apt/apt.systemd.daily function 
normally, which means I have duplicate schedules, one is 
apt-daily.timer, and the other is the underling apt.systemd.daily.

My aim is to disable apt.systemd.daily but to keep apt-daily.timer function.

Seems the only way is to copy and customize a newly 
/usr/lib/apt/apt.systemd.daily


On 07/12/2016 01:22 AM, Roy Zuo wrote:
> Hi Mian,
>
> As per systemd.timer(7) you can change the timer to whatever frequency 
> you would
> like. The following should make update/upgrade happen monthly.
>
>    OnCalendar=*-*-05 00:00
>
> Probably you should disable apt-daily.timer all together and create a 
> new one
> named apt-monthly.timer so that your changes are not overridden by future
> upgrades.  Also, you have to create a apt-monthly.service accordingly.
>
> Modifications to `/etc/apt/apt.conf.d/10periodic` should still be 
> needed if
> you would like to go fully unattended.
>
>    APT::Periodic::Unattended-Upgrade "1";
>
> Still `/etc/apt/apt.conf.d/50unattended-upgrades` controls the 
> packages you
> would like to upgrade.
>
> Regards,
>
> Roy
>
> On Mon, Jul 11, 2016 at 02:55:13PM +0200, mian.hou at canonical.com wrote:
>> Hi systemd experts here:
>>
>>     I'd like any advice/clue regarding scheduling apt automatic 
>> update/upgrade
>> and the possibility of bellow request:
>>
>>     The current largest interval between 2 scheduled update/upgrade 
>> is "every
>> two weeks", is it possible to set the schedule to be monthly? for 
>> example, make
>> apt automatic update/upgrade only happen once on the 5th of each month?
>>
>>     Seems I can use systemd and apt-daily.timer to let apt automatic 
>> update/
>> upgrade happen multiple times each day, but apt-daily.timer cannot 
>> override the
>> daily apt update/upgrade with a less frequency such as once per month.
>>
>> Regards,
>>
>> Mian
>> Canonical Support and Technical Services
>> Email: [1]mian.hou at canonical.com
>> Mobile: +86 139 1138 6220
>>
>> References:
>>
>> [1] mailto:mian.hou at canonical.com
>
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>
> -- 
> Roy Zuo
>
> Canonical Support and Technical Services, Technical Support Engi (APAC)
> Email: roy.zuo at canonical.com
> Mobile: +61 423 222 082
>