---
title: "G-Core Labs"
date: 2019-03-03T16:39:46+01:00
draft: false
slug: gcore
---

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Since: v4.5.0

Configuration for [G-Core Labs](https://gcorelabs.com/dns/).


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- Code: `gcore`

Here is an example bash command using the G-Core Labs provider:

```bash
GCORE_PERMANENT_API_TOKEN=xxxxx \
lego --email myemail@example.com --dns gcore --domains my.example.org run
```




## Credentials

| Environment Variable Name | Description |
|-----------------------|-------------|
| `GCORE_PERMANENT_API_TOKEN` | Permanent API tokene (https://gcorelabs.com/blog/permanent-api-token-explained/) |

The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
More information [here](/lego/dns/#configuration-and-credentials).


## Additional Configuration

| Environment Variable Name | Description |
|--------------------------------|-------------|
| `GCORE_HTTP_TIMEOUT` | API request timeout |
| `GCORE_POLLING_INTERVAL` | Time between DNS propagation check |
| `GCORE_PROPAGATION_TIMEOUT` | Maximum waiting time for DNS propagation |
| `GCORE_TTL` | The TTL of the TXT record used for the DNS challenge |

The environment variable names can be suffixed by `_FILE` to reference a file instead of a value.
More information [here](/lego/dns/#configuration-and-credentials).




## More information

- [API documentation](https://dnsapi.gcorelabs.com/docs#tag/zonesV2)

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