Can't seem to properly create a K8S cluster

tinjaw

I am following what is at

https://xen-orchestra.com/blog/devblog-5-kubernetes-clutser-on-xo/

The master is being created, but none of the nodes are getting created.

Is Private LAN the choice one should use? When I didn't use it the nodes were created but the networking didn't work. If I use Private LAN, the nodes don't get created at all.

Looking for any and all help.

Thanks,
Chaim

tinjaw

Further Info:

When I use eth0 the cluster is created but doesn't work properly.

debian@master:~$ kubectl get pods --all-namespaces
NAMESPACE     NAME                             READY   STATUS             RESTARTS   AGE
kube-system   coredns-66bff467f8-ksl9p         0/1     Pending            0          171m
kube-system   coredns-66bff467f8-lxbr4         0/1     Pending            0          171m
kube-system   etcd-master                      1/1     Running            0          171m
kube-system   kube-apiserver-master            1/1     Running            0          171m
kube-system   kube-controller-manager-master   1/1     Running            0          171m
kube-system   kube-proxy-27cnt                 1/1     Running            0          171m
kube-system   kube-proxy-54472                 1/1     Running            0          165m
kube-system   kube-proxy-pg2p6                 1/1     Running            0          167m
kube-system   kube-router-hzv6j                0/1     CrashLoopBackOff   36         165m
kube-system   kube-router-lvhsl                0/1     CrashLoopBackOff   37         167m
kube-system   kube-router-mmb9p                1/1     Running            0          171m
kube-system   kube-scheduler-master            1/1     Running            0          171m
debian@master:~$

BenjiReis

Hello,

you don't have to use Private LAN, the photo is an example in our homelab where I used a network called that way. the only requirement is taht there's a DHCP running in the network so that the master can get an IP for the nodes to use.

Can you elaborate 'doesn't work properly'? How many nodes did you create? Is the issue the CrashLoopBackOff status?

BenjiReis

The network CIDR you entered in the recipe should be different than the address range of the network on which the VMs runs.

tinjaw

@BenjiReis said in Can't seem to properly create a K8S cluster:

the only requirement is taht there's a DHCP running in the network so that the master can get an IP for the nodes to use.

That is almost certainly the problem here.

So, I am thinking using a VLAN and running a VM (like pfsense) to provide DHCP.

How does that sound?

Best,
Chaim

BenjiReis

Yes that should work