The makemac command manages creating & destroying macOS VMs for the builders. See the README in x/build/env/darwin/macstadium for some more background.
makemac
* On Linux, $ cd cmd/makemac $ CGO_ENABLED=0 go build golang.org/x/build/cmd/makemac $ scp -i ~/.ssh/id_ed25519_golang1 ./makemac gopher@macstadiumd.golang.org:makemac.new $ ssh -i ~/.ssh/id_ed25519_golang1 gopher@macstadiumd.golang.org On that host, $ cp makemac makemac.old $ install makemac.new makemac $ sudo systemctl restart makemac $ sudo journalctl -f -u makemac # watch it
makemac.service
* On Linux, $ scp -i ~/.ssh/id_ed25519_golang1 cmd/makemac/makemac.service gopher@macstadiumd.golang.org:makemac.service On that host, $ sudo mv makemac.service /etc/systemd/system/makemac.service $ sudo systemctl daemon-reload $ sudo systemctl restart makemac $ sudo journalctl -f -u makemac # watch it
$ curl -v http://macstadiumd.golang.org:8713
(Note that URL won't work in a browser due to HSTS requirements on *.golang.org)