# 3.3.5 Setup DNS A records

Using your domain management system, A records will need to be created for all the services which are publicly exposed.

This also enables the Traefik SSL cert to be successfully generated. The SSL cert is signed by [LetsEncrypt](https://letsencrypt.org/).

Either use a wildcard or create individual A records for your chosen domain name, with a TTL of 1 hour that forwards the URL to your **manager server node's** external IP address.

{% hint style="info" %}
The easiest approach is to use a wildcard. For example: \*.\<your\_domain> although this is not as secure in production.
{% endhint %}

### Option 1: Wildcard required A Records:

{% hint style="info" %}
2 A Records are required for this option
{% endhint %}

*\<your\_domain>*

*\*.\<your\_domain>*

### Option 2: Individual A Records

{% hint style="info" %}
16 A Records are required for this option
{% endhint %}

*\<your\_domain>*

*auth.\<your\_domain>*

*config.\<your\_domain>*

*countryconfig.\<your\_domain>*

*documents.\<your\_domain>*

*metabase.\<your\_domain>*

*minio.\<your\_domain>*

*minio-console.\<your\_domain>*

*ui-kit.\<your\_domain>*

*gateway.\<your\_domain>*

*kibana.\<your\_domain>*

*login.\<your\_domain>*

*openhim-api.\<your\_domain>*

*openhim.\<your\_domain>*

*register.\<your\_domain>*

*webhooks.\<your\_domain>*

{% hint style="info" %}
If you are enabling [external interoperability access directly to OpenHIM](/v1.3/technology/interoperability/other-ways-to-interoperate.md), you will also need a domain for it such as this: *api.\<your\_domain>* but be careful to only add this domain if you understand the whitelisting Traefik steps required. You could open yourself up to DDOS attack this way.
{% endhint %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://documentation.opencrvs.org/v1.3/setup/3.-installation/3.3-set-up-a-server-hosted-environment/3.3.5-setup-dns-a-records.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.