Setup the MetalLB Loadbalancer

The MetalLb loadbalancer can be setup by editing the following file metallb-openstack-service-lb.yml, You will need to add your "external" VIP(s) to the loadbalancer so that they can be used within services. These IP addresses are unique and will need to be customized to meet the needs of your environment.

Example LB manifest

Example for metallb-openstack-service-lb.yml file.

---
apiVersion: metallb.io/v1beta1
kind: IPAddressPool
metadata:
  name: gateway-api-external
  namespace: metallb-system
spec:
  addresses:
    - 10.74.8.99/32  # This is assumed to be the public LB vip address
  autoAssign: false
---
apiVersion: metallb.io/v1beta1
kind: L2Advertisement
metadata:
  name: openstack-external-advertisement
  namespace: metallb-system
spec:
  ipAddressPools:
    - gateway-api-external
  # nodeSelectors:  # Optional block to limit nodes for a given advertisement
  #   - matchLabels:
  #       kubernetes.io/hostname: controller01.your.domain.tld
  #   - matchLabels:
  #       kubernetes.io/hostname: controller02.your.domain.tld
  #   - matchLabels:
  #       kubernetes.io/hostname: controller03.your.domain.tld
  # interfaces:  # Optional block to limit ifaces used to advertise VIPs
  #   - br-mgmt

Tip

It is recommended that you modify the file locally so that your changes are not impacted by the git tree.

mkdir -p /etc/genestack/manifests/metallb/
cp /etc/genestack/manifests/metallb/metallb-openstack-service-lb.yml /etc/genestack/manifests/metallb/metallb-openstack-service-lb.yml

Edit the metallb-openstack-service-lb.yml file following the comment instructions with the details of your cluster.

Apply the metallb service manifest.

kubectl apply -f /etc/genestack/manifests/metallb/metallb-openstack-service-lb.yml