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Date:      Mon, 11 Sep 2017 09:59:49 -0400
From:      "Littlefield, Tyler" <tyler@tysdomain.com>
To:        Anton Yuzhaninov <citrin+bsd@citrin.ru>, freebsd-questions@freebsd.org
Subject:   Re: help with condensing bsd
Message-ID:  <27aa284a-2de7-ead6-ecb8-3ca73f133d66@tysdomain.com>
In-Reply-To: <8e90abb6-79b0-5f2a-8c1a-4126a663f0ee@citrin.ru>
References:  <b591f6b4-0a03-3db2-b823-c7df349b636e@tysdomain.com> <8e90abb6-79b0-5f2a-8c1a-4126a663f0ee@citrin.ru>

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On 9/8/2017 3:03 PM, Anton Yuzhaninov wrote:
> On 09/08/17 12:04, Littlefield, Tyler wrote:
>> I wish to create a smaller BSD as I have a vps with a minimal amount of
>> space.
> 1. Reducing kernel size.
>
> create custom config - add to it all you need (drivers, geom/netgraph
> modules e. t. c.) and add line
> makeoptions     NO_MODULES=yes
>
> only kernel will be build without modules.
> Kernel can be compressed using gzip -9
>
> 2. World.
>
> Simple way - just disable optional stuff via src.conf
> Read man src.conf and add knobs like
> WITHOUT_ACCT=yes
> WITHOUT_ACPI=yes
> WITHOUT_AMD=yes
> e.t.c.
> to you src.conf
>
> Not all can be switched off via src.conf, but if you not building image
> for tiny embedded system a few extra Mb probably doesn't matter.
>
>> I know that I can buildworld and cut a lot of things out (does
>> anyone have a good example from where to start)?
>> My question is this: Once I buildworld and buildkernel, how do I package
>> these up? I have a few systems that need this new buildworld and
>> buildkernel, and i also want to replace the base iocage jail.
> Different options are possible.
>
> I use this way:
>
> On build host I run script make-release.sh [1]
> result of this script: files base.txz kernel.txz e. t. c.
>
> /usr/src/release/release.sh can be used instead, but for me it was more
> easy to write own script than customize release.sh.
>
> To upgrade OS on VPS I use shell script [2] which fetches this files and
> extracts them using tar. To upgrade files in /etc I currently use
> etcupdate (because mergemaster needs /usr/src).
>
> If you already have OS installed in this VPS you can install you custom
> build (and copy /etc/src.conf used for this build) and then run
> make delete-old && make delete-old-libs
> to delete switched off parts (but you will need /usr/src for this task).


To bad there's not a way to do this without /usr/src. If you just extract this new system over your current system, how does that get rid of things you removed? For example I got rid of bluetooth and various other things that I don't want installed.
Thanks,

 Also you can save space by not keeping /usr/ports and installing binary
packages. If custom options are need you will have to run own package
repo using poudriere.

1. http://termbin.com/ad1c
2. http://termbin.com/rvd8
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-- 

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Tyler Littlefield

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