---
title: "Custom TLS Certificate"
slug: "fmadio-os-custom-www-certificate"
updated: 2025-04-20T10:27:10Z
published: 2025-04-20T10:27:10Z
canonical: "docs.fmad.io/fmadio-os-custom-www-certificate"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fmad.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Custom TLS Certificate

We use nginx as our WWW front end interface, enabling all the standard features and stability this provides.

Custom TLS/SSL WWW x509 certificates are supported. Steps as follows

## STEP 1) Copy Certs

PEM file

Copy <you cert>.pem to /opt/fmadio/etc/fmadio_cert.pem

e.g

```plaintext
cp mycert.pem /opt/fmadio/etc/fmadio_cert.pem
```

Key file

Copy <you cert>.key to /opt/fmadio/etc/fmadio_cert.key

e.g

```plaintext
cp mysert.key /opt/fmadio/etc/fmadio_cert.key
```

## Step 2) Restart nginx

Need to restart NGINX for the new certificate to be loaded

```plaintext
sudo killall nginx
```

## Step 3) Verify

NGINX will take 60sec to restart (it runs off a cronjob). Wait for nginx to restart

Once restarted, the new Certificate should be loaded

## Debugging

Any problems check the log files in /mnt/store0/log/nginx_error.log