code.dlang.org major outage

[Sönke Ludwig via Digitalmars-d]

Am 23.02.2017 um 23:55 schrieb Sönke Ludwig:
> The virtual server that is running code.dlang.org has frozen about an
> hour ago and fails to boot further than to the bootloader. Initial
> attempts to recover from within Grub have failed and it's unclear what
> the root cause is. I will instead set up a replacement server with the
> latest backup from 20 hours ago as soon as it becomes available.
>
> It's really about time to install a permanent backup server to keep the
> registry available in such cases. I will try my best to allocate time to
> make this happen, but I'm severely constrained currently and any helping
> hand would make a big difference. What needs to be implemented is a mode
> for the DUB registry [1] that works without the userman database and
> instead just polls code.dlang.org for changes (may also require some new
> REST API end points to be able to acquire all needed data).
>
> [1]: https://github.com/dlang/dub-registry/

I used the waiting time during the backup upload to prepare a PR for a 
mirror mode: https://github.com/dlang/dub-registry/pull/187

Would be good if someone could have a look. Once this is merged, anyone 
can run this on a server using `./dub-registry --mirror 
https://code.dlang.org/` and then forward incoming requests using a 
reverse proxy to http://127.0.0.1:8005.

In the current form, this will enable manual fallback in the form of 
users specifying --registry=https://some.code.dlang.mirror on the DUB 
command line. In the future we can then keep a list of official mirrors 
as DNS entries (maybe of the form mirror1.dub.pm) and let DUB use those 
automatically.