how to delete/remove calico cni from my kubernetes cluster

Question

I have installed my kubernetes cluster(1master, 3worker)in the digital ocean.
The problem is I installed both flannel and calico in this cluster.
I want to remove the calico completely from my cluster or is it ok to have multiple CNI?

Matriculate

Hi @AATHITH RAJENDRAN, I am implementing similar infrastructure (1 master 2 nodes) on DO and run to issue with calico and kube proxy issue. Kindly assist me with any resource guide thanks. – Windjammer

It would be helpful if you could share more details on the issue like what you have tried, what is the current output/issue? and what is the expected output/result. – Matriculate

Answer 1

Use following two commands to remove calico from your node:

kubectl delete -f https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml
kubectl delete -f https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml

Soil

How did you add calico to the cluster or it came by default with cluster deployment? – Soil

do we need to replace v3.3 in the URL with our installed version? – Idiopathy

@PrafullLadha-: I tried your Kubectl delete commands but I am not able to delete calicoctl . The command and calico pods are still up. My calico version is: Client Version: v3.19.1 Git commit: 6fc0db96 – Sloe

Answer 2

You should add these

https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/rbac-kdd.yaml

and

https://docs.projectcalico.org/v3.3/getting-started/kubernetes/installation/hosted/kubernetes-datastore/calico-networking/1.7/calico.yaml

to your ansible playbook file state as "absent" then when you run ansible playbook file i.e as below.

- name: Delete Calico (rbac-kdd.yaml) from cluster
  kubernetes:
    api_endpoint: 123.45.67.89
    insecure: true
    file_reference: /path/to/rbac-kdd.yaml
    state: absent

- name: Delete Calico (calico.yaml) from cluster
  kubernetes:
    api_endpoint: 123.45.67.89
    insecure: true
    file_reference: /path/to/calico.yaml
    state: absent

Please check your ansible playbook file for cluster installation and change/modify values according your needs.

For more details kubernetes with ansible you can see this: https://docs.ansible.com/ansible/2.5/modules/kubernetes_module.html

I hope it will be helpful for you

Dermatoplasty

Did I miss where the question indicates they use Ansible? – Businessman

@Businessman that's right, you miss the fact that this question is edited in Dec 19 2019, and my answer was Dec 4 2018. – Dermatoplasty

@coolinuxoid the revision of the edit only shows that or is it ok to have multiple CNI? was added.. no mention of Ansible – Roden

@Roden not sure what you are trying to achieve but I am sure that question was with Ansible related. I remember this very well – Dermatoplasty

Answer 3

PLease change the security group, If its AWS If its s VM, Expose the port

Mozellemozes

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This does not provide an answer to the question. Once you have sufficient reputation you will be able to comment on any post; instead, provide answers that don't require clarification from the asker. - From Review – Neural

This answer is not useful. – Passed