For more precise policy, set `networkPolicy.allowExternal=true`. This will
only allow pods with the generated client label to connect to MinIO.
This label will be displayed in the output of a successful install.

### Existing secret

Instead of having this chart create the secret for you, you can supply a preexisting secret, much
like an existing PersistentVolumeClaim.

`certgen` is a simple *Go* tool to generate self-signed certificates, and provides SAN certificates with DNS and IP entries:

```sh
./certgen -host "10.10.0.3,10.10.0.4,10.10.0.5"
```

A response similar to this one should be displayed:

```
2018/11/21 10:16:18 wrote public.crt
2018/11/21 10:16:18 wrote private.key
```

### 3.2 Use OpenSSL to Generate a Certificate

Use one of the following methods to generate a certificate using `openssl`:

  - Select `Manually`.
  - Give it a name. The name will be displayed on TeamCity web UI. We highly recommend it be capitalized from the branch name, i.e. `MyTestBranch`.