Bluegreen healthchecks not passing

This incident has been resolved.

A fix has been implemented and bluegreen deploys are succeeding as expected. We're continuing to monitor deploys to ensure stability, but customers should see BlueGreen deploys succeed in all regions.

The issue has been identified and a fix is being implemented.

We are seeing signs of recovery, with Bluegreen deployments succeeding for many customers. We are continuing to investigate the root cause of the issue.

Customers who still experience a Bluegreen deployment failure can retry using the rolling strategy with `fly deploy --strategy rolling`.

A temporary workaround for new deployments is to use rolling strategy: `fly deploy --strategy rolling`.

We are still investigating the issue.

When deploying with bluegreen strategy some green machines (new app version) won't pass healthchecks.
Temporary workaround: unless bluegreen is a must for your app you can temporarily deploy using a different strategy by `fly deploy --strategy NAME`.