Have a few questions around possible deployment options ...
a) Can one effectively do a multi-arch cluster deployment, say some x86_64 and some aarch64 nodes?
- this might be relevant mostly to have designated (labeled) worker nodes of the respective variety for targeted workloads
b) Parallel to above, would it be possible, given the kubeadm-based approach to include a worker node based on another Linux (with Kubernetes installed) distribution?
- as above, this might enable usage of other enabled devices like Jetson/RPi4 which don't yet have openSUSE images available
c) From the https://en.opensuse.org/Kubic:kubeadm wiki page, it cites being able to have a single master node (and untaint to allow workload scheduling there). For edge computing (aka gateways), this might be a quite valid usage scenario. Other than potential resource conflicts of such a single node "cluster", any other considerations/caveats?
And a couple of issues ...
1) on the same wiki page cited above, for Cilium it cites using /usr/share/k8s-yaml/cilium/cilium.yaml but the file currently residing there is /usr/share/k8s-yaml/cilium/quick-install.yaml. Is this the correct one to now use?
2) for some reason, all of the nodes in a recent deployed cluster show Status = NotReady (which may be related to previously listed issue and my assumption to use the file in that directory), since kubectl describe node <name> shows an error ... "Missing CNI default network"
Thanks for any help / guidance
Any feedback/answers on these questions ?
On Mon, Nov 18, 2019 at 10:02 AM Bryan Gartner bwgartner@gmail.com wrote:
Have a few questions around possible deployment options ...
a) Can one effectively do a multi-arch cluster deployment, say some x86_64 and some aarch64 nodes?
- this might be relevant mostly to have designated (labeled) worker
nodes of the respective variety for targeted workloads
b) Parallel to above, would it be possible, given the kubeadm-based approach to include a worker node based on another Linux (with Kubernetes installed) distribution?
- as above, this might enable usage of other enabled devices like
Jetson/RPi4 which don't yet have openSUSE images available
c) From the https://en.opensuse.org/Kubic:kubeadm wiki page, it cites being able to have a single master node (and untaint to allow workload scheduling there). For edge computing (aka gateways), this might be a quite valid usage scenario. Other than potential resource conflicts of such a single node "cluster", any other considerations/caveats?
And a couple of issues ...
- on the same wiki page cited above, for Cilium it cites using
/usr/share/k8s-yaml/cilium/cilium.yaml but the file currently residing there is /usr/share/k8s-yaml/cilium/quick-install.yaml. Is this the correct one to now use?
- for some reason, all of the nodes in a recent deployed cluster show
Status = NotReady (which may be related to previously listed issue and my assumption to use the file in that directory), since kubectl describe node <name> shows an error ... "Missing CNI default network"
Thanks for any help / guidance
On Tue, Dec 10, 2019 at 10:43:56AM -0700, Bryan Gartner wrote:
Any feedback/answers on these questions ?
The wiki page https://en.opensuse.org/Kubic:kubeadm has an information that Cilium is currently broken. We are sorry of that and I'm working on fixing it. There is a separate topic on the list about that:
https://lists.opensuse.org/opensuse-kubic/2019-11/msg00006.html
Michal
On Mon, Nov 18, Bryan Gartner wrote:
Have a few questions around possible deployment options ...
a) Can one effectively do a multi-arch cluster deployment, say some x86_64 and some aarch64 nodes?
No idea. Just try it.
- this might be relevant mostly to have designated (labeled) worker
nodes of the respective variety for targeted workloads
b) Parallel to above, would it be possible, given the kubeadm-based approach to include a worker node based on another Linux (with Kubernetes installed) distribution?
As long as kubeadm/kubelet have the same version as the rest of the cluster: nobody cares about the underlying OS, so yes, this should work.
- as above, this might enable usage of other enabled devices like
Jetson/RPi4 which don't yet have openSUSE images available
c) From the https://en.opensuse.org/Kubic:kubeadm wiki page, it cites being able to have a single master node (and untaint to allow workload scheduling there). For edge computing (aka gateways), this might be a quite valid usage scenario. Other than potential resource conflicts of such a single node "cluster", any other considerations/caveats?
And a couple of issues ...
- on the same wiki page cited above, for Cilium it cites using
/usr/share/k8s-yaml/cilium/cilium.yaml but the file currently residing there is /usr/share/k8s-yaml/cilium/quick-install.yaml. Is this the correct one to now use?
As already written on this list: cilium is currently broken and it's a lot of work to get it building correct again. No idea how far we are with this.
- for some reason, all of the nodes in a recent deployed cluster show
Status = NotReady (which may be related to previously listed issue and my assumption to use the file in that directory), since kubectl describe node <name> shows an error ... "Missing CNI default network"
"Missing CNI default network" means you haven't installed one.
Seems you missed a step in the setup or made a mistake somewhere.
Thorsten
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Bryan Gartner -
Michal Rostecki -
Thorsten Kukuk