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Troubleshooting Network Issues with Multipass and MicroK8s Port Forwarding
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Troubleshooting Network Issues with Multipass and MicroK8s Port Forwarding

To resolve the issue of not being able to reach your Multipass VM via specific HTTP ports from the host.

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CareerByteCode
Sep 11, 2024
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Troubleshooting Network Issues with Multipass and MicroK8s Port Forwarding
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I'm running an Ubuntu VM with multipass hyperkit do run microk8s. Within the VM all things checkout and available with skaffold/kubectl port forwarding. For instance:

$ multipass list
Name                    State             IPv4             Image
microk8s-vm             Running           192.168.64.2     Ubuntu 20.04 LTS
                                          10.0.1.1
                                          172.17.0.1
                                          10.1.254.64

Port forwarding service/my-app in namespace default, remote port 80 -> 127.0.0.1:4503

Within the VM:curl localhost:4503 ✅

From the host: curl 192.168.64.2:4503🛑

I know the VM is reachable on port 80 because curl 192.168.64.2 returns default ngnix not found page. FWIW I never installed ngnix and the service doesn't seem to be running /cannot turn it off.

I've been at this for a day and I'm stumped. I even tried the Vbox driver and manually configured a bridge adapter. I even created my own adapter...

$ multipass exec -- microk8s-vm sudo bash -c "cat > /etc/netplan/60-bridge.yaml" <<EOF
network:
  ethernets:
    enp0s8:                  # this is the interface name from above
      dhcp4: true
      dhcp4-overrides:       # this is needed so the default gateway
        route-metric: 200    # remains with the first interface
  version: 2
EOF
$ multipass exec microk8s-vm sudo netplan apply

How can I reach this VM from the host?

How to resolve the above issue ?

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