---
title: "Troubleshooting | Grafana k6 documentation"
description: "Instructions to fix the most common installation issues."
---

# Troubleshooting

## System lacks ca-certificates or gnupg2

Some Linux distributions don’t come bundled with the `ca-certificates` and `gnupg2` packages. If you use such a distribution, you’ll need to install them with:

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```bash
sudo apt-get update && sudo apt-get install -y ca-certificates gnupg2
```

This example is for Debian/Ubuntu and derivatives. Consult your distribution’s documentation if you use another one.

## Behind a firewall or proxy

Some users have reported that they can’t download the key from Ubuntu’s keyserver. When they run the `gpg` command, their firewalls or proxies block their requests to download. If this issue affects you, you can try this alternative:

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```bash
curl -s https://dl.k6.io/key.gpg | gpg --dearmor | sudo tee /usr/share/keyrings/k6-archive-keyring.gpg
```

## Old rpm-based Linux distributions

Distributions like Amazon Linux 2 and CentOS before version 8 don’t support the PGP V4 signature we use. You’ll need to disable the verification when you install k6:

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```bash
sudo yum install --nogpgcheck k6
```