does anyone have any guide or know if multus works with Racher k3s?

[sardella]

does anyone have any guide or know if multus works with Racher k3s?

Thanks

[sardella]

My pod never launches and I get validateIfName: interface name net1 already exists

Normal Scheduled default-scheduler Successfully assigned default/samplepod to localhost.localdomain
Normal AddedInterface 9s multus Add eth0 [10.42.0.2/24]
Normal AddedInterface 9s multus Add net1 [] from default/macvlan-conf
Normal AddedInterface 9s multus Add eth0 [10.42.0.2/24]
Warning FailedCreatePodSandBox 9s kubelet, localhost.localdomain Failed to create pod sandbox: rpc error: code = Unknown desc = failed to setup network for sandbox "6680c8253a85b20d0b5e21e95ae1ba7a0a2d85cd91ac621c40e2da5dd454f025": [default/samplepod:macvlan-conf]: error adding container to network "macvlan-conf": delegateAdd: cannot set "" interface name to "net1": validateIfName: interface name net1 already exists

/etc/cni/net.d/70-multus.conf
{
"name": "multus-cni-network",
"type": "multus",
"logFile": "/var/log/multus.log",
"logLevel": "debug",
"readinessindicatorfile": "/var/run/flannel/subnet.env",
"delegates": [
{
"type": "flannel",
"name": "flannel.1",
"delegate": {
"isDefaultGateway": true
}
}
],
"kubeconfig": "/etc/cni/net.d/multus.d/multus.kubeconfig"
}

apiVersion: "k8s.cni.cncf.io/v1"
kind: NetworkAttachmentDefinition
metadata:
name: macvlan-conf
spec:
config: '{
"cniVersion": "0.3.1",
"plugins": [ {
"type": "macvlan",
"master": "eth1",
"mode": "bridge",
"ipam": {}
} ]
}'

apiVersion: v1
kind: Pod
metadata:
name: samplepod
annotations:
k8s.v1.cni.cncf.io/networks: '[
{ "name": "macvlan-conf"}
]'

spec:
containers:

• name: samplepod
  command: ["/bin/bash", "-c", "trap : TERM INT; sleep infinity & wait"]
  image: dougbtv/centos-network

Name: samplepod
Namespace: default
Priority: 0
Node: localhost.localdomain/10.255.0.246
Start Time: Sat, 29 Aug 2020 05:15:39 -0400
Labels:
Annotations: k8s.v1.cni.cncf.io/network-status:
[{
"name": "",
"ips": [
"10.42.0.10"
],
"default": true,
"dns": {}
},{
"name": "default/macvlan-conf",
"interface": "net1",
"mac": "4e:e5:1e:6b:f6:1a",
"dns": {}
}]
k8s.v1.cni.cncf.io/networks: [ { "name": "macvlan-conf"} ]
k8s.v1.cni.cncf.io/networks-status:
[{
"name": "",
"ips": [
"10.42.0.10"
],
"default": true,
"dns": {}
},{
"name": "default/macvlan-conf",
"interface": "net1",
"mac": "4e:e5:1e:6b:f6:1a",
"dns": {}
}]
Status: Pending
IP:
IPs:
Containers:
samplepod:
Container ID:
Image: dougbtv/centos-network
Image ID:
Port:
Host Port:
Command:
/bin/bash
-c
trap : TERM INT; sleep infinity & wait
State: Waiting
Reason: ContainerCreating
Ready: False
Restart Count: 0
Environment:
Mounts:
/var/run/secrets/kubernetes.io/serviceaccount from default-token-w9zhv (ro)
Conditions:
Type Status
Initialized True
Ready False
ContainersReady False
PodScheduled True
Volumes:
default-token-w9zhv:
Type: Secret (a volume populated by a Secret)
SecretName: default-token-w9zhv
Optional: false
QoS Class: BestEffort
Node-Selectors:
Tolerations: node.kubernetes.io/not-ready:NoExecute for 300s
node.kubernetes.io/unreachable:NoExecute for 300s

[VictorRobellini]

I've been battling this as well and I just got it to work. Your distro may use different paths, but make sure /opt/cni/bin is where your plugins are located.

I installed a single node k3s cluster using the following command:
curl -sfL https://get.k3s.io | INSTALL_K3S_EXEC="--flannel-backend=none" sh -

Then I installed Flannel:
kubectl apply -f https://raw.githubusercontent.com/coreos/flannel/master/Documentation/kube-flannel.yml

Your /etc/cni/net.d/ should have "10-flannel.conflist" listed

I followed the quick start instructions utilizing the daemonset. After updating the mater interface and deploying the sample pod, everything worked.

[sardella]

that did the trick, Thanks