CKA prep --CNI install that supports Network policy

Kubernetes
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#1

for the CKA certification there is common question where it goes like "The Calico tigera-operator.yaml URL was provided. [The custom-resources.yaml URL was not, but we needed it to configure the PodCIDR in the Installation CRD. Anyway, I remembered the path for custom-resources.yaml as it was in the same directory.] but yet except the calico controller pod , other pods does not come up. can you help how we can proceed with help this kind of question.

#2

Calico, according to its documentation, assigns the podCIDR from any available free zone. Once the Calico is installed, you can check if the podCIDRs are configured in the kube-controller-manager pod with --cluster-cidr. If it’s not set there, you would need to install the Calicos’ Installation CR to mention the podCIDR.

#3

How I am gonna get that …either I have to memorise it for the CKA or something as only the tigera-operator yaml url was provided. and this is about CKA exam not setup at home or in any project. PS: As far as I know calico documentation is not accessible from CKA exam environment

#4

You mention that The Calico tigera-operator.yaml URL was provided., the Installation CR is in the same Calico doc (Assuming the provided URL is official Calico docs).

#5

In some Reddit post I’ve seen people getting through this is by restarting the kubelet and containerd

#6

I guess either you are not getting my point or haven’t faced the latest cka exam setup, there is an absolute url that can be used to downloaded available, and not the complete calico documentation. So how I am gonna get the setup instructions.

#7

Yes, I’ve not taken the updated CKA, I would plan before Jan-26.
When you say absolute url, I guess, it means raw github url with manifest. If that is the case,

  • Check the logs of Calico operator, and see if you get any hint
  • Ensure if the provided URL comes with Installation CR, that needs setting podCIDRs
  • Check if broken in the provided config ( study the Calico manifests; this would be very unlikely to be the case ).
  • Try restarting the Containerd and Kubelet

Edit: We have a Calico scenario in one of our CKA Ultimate Mock Exams, you can practice and verify the resources required.

#8

As far as I remember there were no further file info given , tried restarting the kubelet but no help.never got the node calico pods after completing the solution

#9

in the scenario it was asked to chose one of the CNI among calico and flanel which supports calico and the absolute URL is given without any other file. so how we are supposed to complete the task?