The linux-ppc64le buildlets run on PPC64 VMs at osuosl.org (OSU Open Source Lab).

They run Ubuntu bionic on the host, with Docker images running
debian:buster running the buildlets.

Filing tickets: https://support.osuosl.org/
    Ticket username: bradfitz@golang.org
    Ticket password: go/pw-osuosl-ppc64

Machines:

* go-le-bionic-1: (20 GB RAM, 50 GB disk, 10 cores, POWER9)
  Linux go-le-bionic-1 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17 17:08:54 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux

  ssh -i ~/.ssh/id_ed25519_golang1 ubuntu@140.211.169.171
  (key from go/go-builders-ssh)

* go-le-bionic-2: (20 GB RAM, 50 GB disk, 10 cores, POWER8)
  Linux go-le-bionic-2 4.15.0-65-generic #74-Ubuntu SMP Tue Sep 17 17:08:54 UTC 2019 ppc64le ppc64le ppc64le GNU/Linux

  ssh -i ~/.ssh/id_ed25519_golang1 ubuntu@140.211.169.160
  (key from go/go-builders-ssh)

To configure the hosts, see the Makefile and trace what that does.