Re: tcpdump mirror in Germany

[Denis Ovsienko via tcpdump-workers <tcpdump-workers () lists tcpdump org>]

> --- Begin Message ---
>
>
> From: Denis Ovsienko <denis () ovsienko info>
>
> Date: Sun, 21 Mar 2021 23:08:44 +0000
>
> On Sun, 21 Mar 2021 22:04:29 +0100
> Harald Welte via tcpdump-workers <tcpdump-workers () lists tcpdump org>
> wrote:
>
> > My company sysmocom is running build and test infrastructure for
> > osmocom.org, and we'd be more than happy to host those ARM build
> > slaves in Germany. We also operate a number of rpi4 for jenkins
> > build/test runs and as openbuildservice builders.
>
> Hi Harald.
>
> Thank you for the offer. For the operating systems specifics please see
> below.
>
> * linux-aarch64 — easy to install, tested with 64-bit Raspbian 10 and
>   64-bit Debian 11 snapshot. Tested on RPI3B and RPI4B, currently runs
>   on an RPI4B, can likely use other hardware and Linux distributions.
>   I've seen ARM servers with many CPU cores and SSDs, but so far on
>   paper only. Anyway, RPI4B performance is fine.
>
> * linux-armv7l — same easy, tested with 32-bit Raspbian 10. Currently
>   runs on an RPI4B, but that's possibly not the right way to do 32-bit
>   ARM. Jan is looking if his spare 32-bit Pi can be set up for this.
>
> * freebsd-aarch64 — easy to install on an RPI3B using FreeBSD 12.2,
>   since a few weeks ago easy to bootstrap on an RPI4B using FreeBSD
>   13.0-RC. Currently runs on an RPI4B.
>
> * netbsd-aarch64 — possible to install using NetBSD 9.1 and RPI3B with
>   physical console (HDMI monitor + USB keyboard), as there is no SSH
>   access in the default image (AFAIR). No support for newer RPIs yet.
>   Currently runs on an RPI3B.
>
> * openbsd-aarch64 — possible to install using OpenBSD 6.8 and RPI4B
>   with TTL serial console, RPI4-UEFI bootloader on the SD card and one
>   additional USB storage for the OS permanently plugged in. Currently
>   runs on an RPI4B.
>
> As soon as the OS is up and I have the shell prompt, it does not take
> long to configure the system (partly scripted) and to install the
> worker (fully scripted). You can have a copy of a working SD card image
> instead if that helps. On this note, most of the buildbot-worker
> activity happens on a tmpfs mount.
>
> One important thing to keep in mind is that the workers may end up
> executing arbitrary commands when building a pull request
> automatically. So it is best to keep them firewalled from internal
> networks and not to keep any other important workload/data on the same
> host. It might be possible to use some virtualisation means to isolate
> the workers from the rest of the host, but please do not count on that
> anytime soon unless you can do it yourself.
>
> Let me know which ARM workers look feasible to you. If you can host
> PowerPC workers instead or in addition to that, it would help too.
>
> -- 
>     Denis Ovsienko
>
> --- End Message ---
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