Wireguard Operator

Painless deployment of wireguard on kubernetes

Support

If you are facing any problems please open an issue

Tested with

• IBM Cloud Kubernetes Service
• Gcore Labs KMP
  • requires spec.enableIpForwardOnPodInit: true
• Google Kubernetes Engine
  • requires spec.mtu: "1380"
  • Not compatible with "Container-Optimized OS with containerd" node images
  • Not compatible with autopilot
• DigitalOcean Kubernetes
  • requires spec.serviceType: "NodePort". DigitalOcean LoadBalancer does not support UDP.
• Amazon EKS
• Azure Kubernetes Service
• ...?

Architecture

Features

• Falls back to userspace implementation of wireguard wireguard-go if wireguard kernal module is missing
• Automatic key generation
• Automatic IP allocation
• Does not need persistance. peer/server keys are stored as k8s secrets and loaded into the wireguard pod
• Exposes a metrics endpoint

Example

Server

apiVersion: vpn.wireguard-operator.io/v1alpha1
kind: Wireguard
metadata:
  name: "my-cool-vpn"
spec:
  mtu: "1380"

Peer

apiVersion: vpn.wireguard-operator.io/v1alpha1
kind: WireguardPeer
metadata:
  name: peer1
spec:
  wireguardRef: "my-cool-vpn"

Peer configuration

Peer configurations are stored in a Secret named <wireguard-name>-peer-configs, one key per peer. Retrieve and decode like this:

kubectl get secret my-cool-vpn-peer-configs -o jsonpath='{.data.peer1}' | base64 -d

Use the output to configure your preferred Wireguard client:

[Interface]
PrivateKey = WOhR7uTMAqmZamc1umzfwm8o4ZxLdR5LjDcUYaW/PH8=
Address = 10.8.0.3
DNS = 10.48.0.10, default.svc.cluster.local
MTU = 1380

[Peer]
PublicKey = sO3ZWhnIT8owcdsfwiMRu2D8LzKmae2gUAxAmhx5GTg=
AllowedIPs = 0.0.0.0/0
Endpoint = 32.121.45.102:51820

How to deploy

Using provided manifest file

kubectl apply -f https://github.com/nccloud/wireguard-operator/releases/download/v2.9.0/release.yaml

Using Helm

helm repo add nccloud https://nccloud.github.io/charts
helm install wireguard nccloud/wireguard-operator -n wireguard-system

You can use values to further customize the installation:

helm install wireguard nccloud/wireguard-operator -n wireguard-system --set nameOverride=wireguard

How to remove

Using provided manifest file

kubectl delete -f https://github.com/nccloud/wireguard-operator/releases/download/v2.9.0/release.yaml

Using Helm

helm uninstall wireguard -n wireguard-system

How to collaborate

This project is done on top of Kubebuilder, so read about that project before collaborating. Of course, we are open to external collaborations for this project. For doing it you must fork the repository, make your changes to the code and open a PR. The code will be reviewed and tested (always)

We are developers and hate bad code. For that reason we ask you the highest quality on each line of code to improve this project on each iteration.