List of issues with running 2 or more builder pods in a cluster

[Cryptophobia]

From @arschles on January 7, 2016 22:10

This issue tracks the current limitations of builder as a clustered system

• It uses a filesystem based lockfile to prevent 2 or more git pushes at the same time
  • In a multi-builder setup, this means that multiple git pushes can in fact happen at the same time
  • To solve, the lock will need to be distributed
• It keeps git repositories on disk and runs pre-receive hooks on them to deploy
  • In a multi-builder setup, this means that one git push may only have to push a few refs, while another identical git push may have to push all refs. Not the end of the world
  • To solve, the refs list will need to be moved off of local disk to a shared location (object storage?)

Copied from original issue: deis/builder#86