# Debugging

### My app doesn't use HTTPS and it doesn't work. What gives?

By default, Preview hosted deployment clusters run under the `envs.dev` domain. Every .dev domain is on the HSTS preload list, which makes HTTPS required on all connections. Options to correct this are:

1. **Recommended:** Enable HTTPS on your application. This is as simple as adding the `kubernetes.io/tls-acme: "true"` annotation on your Chart's Ingress.
2. Use a non-Preview cluster with a custom hostname. This will allow you to use a domain which is not on the HSTS preload list.

### My deployment failed, how can I see what went wrong?

We recognize this is a problem, and are looking to get a better feedback loop here. Part of the issue here is that we attempt to clean up failed deployments, which can make debugging difficult.

In your config file, you can set `deploy.atomic: false`, which will prevent automatic clean up of failed deployments. Note that this can leave deployments in a state that requires manual intervention in order to deploy again, so we do not recommend using this setting when not actively debugging.

```
deploy:
    atomic: false
```

If you are having difficulty debugging deployments, reach out and we'll jump on helping you figure out what went wrong.

### My deployment has pending pods, why won't they schedule?

Preview environments have resource limits in place. These limits may prevent a pod from scheduling it if exceeds them. At the moment these limits can not be customized, but please let us know if you are hitting them.