Usage Statistics page railse error if some ingester is LEAVING

[songjiayang]

Describe the bug

I use unregister_on_shutdown: false to keep memeberlist's node, when stop an ingester, it will change status to LEAVING, when this status, I visit Usage Statistics page, it will raise an error:

after about 1m, the leaving ingester change to unhealthy, the statistics page works.

To Reproduce
Steps to reproduce the behavior:

1. Start Cortex 1.13.1 docker image.

Expected behavior

Skip the leaving ingester when fetch some data from ingester ring and response all healthy ingester's data.

[sanjeev98kumar]

@songjiayang I would like to work on this issue plz assign me.

[songjiayang]

@sanjeev98kumar thanks, just do it you can.

[devagya-rattan]

hi, I think no one is working on this can you please assign me this?