On Thu, Apr 09, 2020 at 08:58:14PM +0200, Bengt Richter wrote:
> Wondering, could dnsmasq help?

I am already using dnsmasq to access a virtual machine of the machine
hosting the Guix website so <guix.gnu.org/.i18n/de/> can replace the
Guix website while old URLs keep working.

https://git.savannah.gnu.org/cgit/guix/maintenance.git/tree/hydra/berlin.scm.

I configured dnsmasq with NetworkManager.

(network-manager-service-type config =>
  (network-manager-configuration
    (inherit config)
    (dns "dnsmasq")
    (vpn-plugins (list network-manager-openconnect)))))))

Also I made the network manager configuration as described in the Guix
manual.

I made the attached modifications to berlin.scm so I can test without
the VM starting to build the world.

Then I changed my /etc/hosts

127.0.0.1 localhost florianmacbook
::1       localhost florianmacbook
172.28.112.244 guix.gnu.org guix.gnu.org

Then I made the changes from my previous patch, except those
nginx-server-configuration that I removed because I cannot test TLS.

I compile the VM using

~/git/maintenance$ GUILE_LOAD_PATH=$GUILE_LOAD_PATH:$(pwd)/modules guix system vm-image --image-size=5G --fallback /home/florian/git/maintenance/hydra/berlin.scm

(More than --image-size=5G to be safe.)  I copy the resulting image
and name it berlin1.img, make it writable and run it via

qemu-system-x86_64 -enable-kvm berlin1.img -m 2048 -nic tap,ifname=tap0,script=no,downscript=no

When running the virtual machine, I log in as root and do “herd stop
mcron” so the VM does not get overloaded building all kinds of things
I do not need.  I run the command from “herd schedule mcron” to build
the guix.gnu.org website manually once.

I am confused by all the ways to rewrite, redirect and try_files in
nginx.  I would be happy if others with more knowledge could help.

Regards,
Florian