Comment 3 for bug 1635040

Here's a config that will cause a failure with no pertinent logging visible to the user, conf.d/glance.yml:

---
image_hosts:
  affinity:
    glance_container: 2
  aio1:
    ip: 172.29.236.100

Note, the problem with above config is the scope of affinity (should be under aio1 rather than image_hosts)