MetalLB

MetalLB is a load-balancer implementation for bare metal Kubernetes clusters, using standard routing protocols.

TL;DR;

$ helm install --name metallb stable/metallb

Introduction

This chart bootstraps a MetalLB installation on a Kubernetes cluster using the Helm package manager. This chart provides an implementation for LoadBalancer Service objects.

MetalLB is a cluster service, and as such can only be deployed as a cluster singleton. Running multiple installations of MetalLB in a single cluster is not supported.

Prerequisites

• Kubernetes 1.9+

Installing the Chart

The chart can be installed as follows:

$ helm install --name metallb stable/metallb

The command deploys MetalLB on the Kubernetes cluster. This chart does not provide a default configuration; MetalLB will not act on your Kubernetes Services until you provide one. The configuration section lists various ways to provide this configuration.

Uninstalling the Chart

To uninstall/delete the metallb deployment:

$ helm delete metallb

The command removes all the Kubernetes components associated with the chart, but will not remove the release metadata from helm — this will prevent you, for example, if you later try to create a release also named metallb). To fully delete the release and release history, simply include the --purge flag:

$ helm delete --purge metallb

Configuration

See values.yaml for configuration notes. Specify each parameter using the --set key=value[,key=value] argument to helm install. For example,

$ helm install --name metallb \
  --set rbac.create=false \
    stable/metallb

The above command disables the use of RBAC rules.

Alternatively, a YAML file that specifies the values for the above parameters can be provided while installing the chart. For example,

$ helm install --name metallb -f values.yaml stable/metallb

By default, this chart does not install a configuration for MetalLB, and simply warns you that you must follow the configuration instructions on MetalLB's website to create an appropriate ConfigMap.

For simple setups that only use MetalLB's ARP mode, you can specify a single IP range using the arpAddresses parameter to have the chart install a working configuration for you:

$ helm install --name metallb \
  --set arpAddresses=192.168.16.240/30 \
  stable/metallb

If you have a more complex configuration and want Helm to manage it for you, you can provide it in the config parameter. The configuration format is documented on MetalLB's website.

$ cat values.yaml
configInline:
  peers:
  - peer-address: 10.0.0.1
    peer-asn: 64512
    my-asn: 64512
  address-pools:
  - name: default
    protocol: bgp
    addresses:
    - 198.51.100.0/24

$ helm install --name metallb -f values.yaml stable/metallb