How to try out nested-pods locally (MACVLAN)

How to try out nested-pods locally (MACVLAN)

Following are the instructions for an all-in-one setup, using the nested MACVLAN driver rather than VLAN and trunk ports.

  1. To install OpenStack services run devstack with devstack/local.conf.pod-in-vm.undercloud.sample.

  2. Launch a Nova VM with MACVLAN support

  1. Log into the VM and set up Kubernetes along with Kuryr using devstack:
    • Since undercloud Neutron will be used by pods, Neutron services should be disabled in localrc.

    • Run devstack with devstack/local.conf.pod-in-vm.overcloud.sample. Fill in the needed information, such as the subnet pool id to use or the router.

  2. Once devstack is done and all services are up inside VM. Next steps are to configure the missing information at /etc/kuryr/kuryr.conf:

    • Configure worker VMs subnet:

      [pod_vif_nested]
      worker_nodes_subnet = <UNDERCLOUD_SUBNET_WORKER_NODES_UUID>
      
    • Configure “pod_vif_driver” as “nested-macvlan”:

      [kubernetes]
      pod_vif_driver = nested-macvlan
      
    • Configure binding section:

      [binding]
      link_iface = <VM interface name eg. eth0>
      
    • Restart kuryr-k8s-controller:

      sudo systemctl restart devstack@kuryr-kubernetes.service
      

Now launch pods using kubectl, Undercloud Neutron will serve the networking.

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