I have downloaded go and the source for filebeat and will able to compile filebeat for powerpc little endian using the instructions for building code in CONTRIBUTING.md so I know it is possible to build filebeat for powerpc, Ubuntu 16.04.
What I'm looking to do is to provide an ansible playbook to install filebeat on both x86 and power systems and it would be much easier to do this if there was an apt repository with the deb package for filebeat for ppc64el. Does anyone know if one is available?