> For the complete documentation index, see [llms.txt](https://docs.fylr.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fylr.io/for-system-administrators/installation/helm.md).

# Kubernetes

How to install fylr in a kubernetes cluster

Instructions: See our [helm chart](https://github.com/programmfabrik/fylr-helm/blob/main/charts/fylr/README.md).

* Uses helm charts and Linux containers.
* Needs helm and a kubernetes cluster.
* 3rd party tools for preview thumbnails are pre-packaged.

Through your firewalls you probably sooner or later need access to:

* <https://docker.fylr.io> (fylr core)
* <https://artifacts.opensearch.org> (Analysis ICU plugin for OpenSearch)
* <https://github.io> and <https://github.com> (fylr plugins)
* <https://auth.docker.io> (indexer and PostgreSQL)
* <https://registry-1.docker.io> (indexer and PostgreSQL)
* <https://index.docker.io> (indexer and PostgreSQL)
* <https://cloudfront.net> (indexer and PostgreSQL)
* <https://production.cloudflare.docker.com> (indexer and PostgreSQL)

\
... and of course the **package sources** of the Linux distribution used on your server; for security updates, tools and operating system upgrades.