path_prefix      (path)      namespace prefix to isolate tenants e.g. "customer1/"
coredns_path     (path)      shared bucket DNS records, default is "/skydns"
client_cert      (path)      client cert for mTLS authentication
client_cert_key  (path)      client cert key for mTLS authentication
comment          (sentence)  optionally add a comment to this setting
```

or environment variables

```
KEY:

_":null},"credentials":{"_":null},"drive":{"_":[{"key":"max_timeout","value":""}]},"etcd":{"_":[{"key":"endpoints","value":""},{"key":"path_prefix","value":""},{"key":"coredns_path","value":"/skydns"},{"key":"client_cert","value":""},{"key":"client_cert_key","value":""}]},"heal":{"_":[{"key":"bitrotscan","value":"off"},{"key":"max_sleep","value":"250ms"},{"key":"max_io","value":"100"},{"key":"drive_workers","value":""}]},"identity_ldap":{"_":[{"key":"enable","value":""},{"key":"server_addr","val...