Helm Chart for Fn
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Fn Project Helm Chart

The Fn project is an open source, container native, and cloud agnostic serverless platform. It’s easy to use, supports every programming language, and is extensible and performant.


This chart deploys a fully functioning instance of the Fn platform on a Kubernetes cluster using the Helm package manager.


  • PV provisioner support in the underlying infrastructure (for persistent data, see below )

  • Install Helm

  • Initialize Helm by installing Tiller, the server portion of Helm, to your Kubernetes cluster

helm init

Installing the Chart

Clone the fn-helm repo:

git clone https://github.com/fnproject/fn-helm.git && cd fn-helm

Install chart dependencies from requirements.yaml:

helm dep build fn

The default chart will install fn as a private service inside your cluster with ephemeral storage, to configure a public endpoint and persistent storage you should look at values.yaml and modify the default settings. An example for Oracle Cloud Infrastructure is here.

To install the chart with the release name my-release:

helm install --name my-release fn

Note: if you do not pass the --name flag, a release name will be auto-generated. You can view releases by running helm list (or helm ls, for short).

Uninstalling the Fn Helm Chart

Assuming your release is named my-release:

helm delete --purge my-release

The command removes all the Kubernetes components associated with the chart and deletes the release.


Key Description Default
fn.service.type ClusterIP, NodePort, LoadBalancer LoadBalancer
fn.service.port Fn service port 80
fn.service.annotations Fn Service annotations {}
fnserver.resources Per-node resource requests, see Kubernetes Pod Resources {}
fnserver.nodeSelector Fn node selectors, see Kubernetes Assigning Pods to Nodes {}
fnserver.tolerations Node taint tolerations, see Kubernetes Taints and Tolerations {}
flow.service.type ClusterIP, NodePort, LoadBalancer ClusterIP
flow.service.port Flow Service port 80
flow.service.annotations Flow Service annotations {}
ui.enabled Enable UI components true
ui.service.flowuiPort Fn Flow UI port for ui service 3000
ui.service.fnuiPort Fn UI port for ui service 4000
ui.service.type UI Service type LoadBalancer
rbac.enabled Whether to enable RBAC with a specific cluster role and binding for Fn false
mysql.* See the MySQL chart docs
redis.* See the Redis chart docs

Configuring Database Persistence

Fn persists application data in MySQL. This is configured using the MySQL Helm Chart.

By default this uses container storage. To configure a persistent volume, set mysql.* values in the chart values to that which corresponds to your storage requirements.

e.g. to use an existing persistent volume claim for MySQL storage:

helm install --name testfn --set mysql.persistence.enabled=true,mysql.persistence.existingClaim=tc-fn-mysql fn