I just joined a team where they have and existing Kubernetes Cluster running in bare metal servers. I have ssh access to the master server and nodes and I can see the Kubernetes internal pods (etcd, kube-proxy, etc) running when I execute:
docker psFrom here how can I add a user and my laptop certificate to the Cluster?
Thanks in advance.
Just to clarify. Here are all official information you were asking about (managing cluster users and context):
In the section Append $HOME/.kube/config to your KUBECONFIG environment variable it's explained more deeply.
Here is also description about using --kubeconfig flag
As described previously, the output might be from a single kubeconfig file, or it might be the result of merging several kubeconfig files.
If the --kubeconfig flag is set, use only the specified file. Do not merge. Only one instance of this flag is allowed.
If the cluster was created using kubeadm then it should have a kubeconfig file in the master at /etc/kubernetes/admin.config. You can use kubeconfig files in kubectl with --kubeconfig=/path/to/my.config If the kubeconfig is not there the administrators probably have a reason for that and you should ask them to add you as an user and create a kubeconfig for you so you can use kubectl in your own machine.
Besides that, there is an alpha feature of kubeadm enabling the configuration of new users:
# Output a kubeconfig file for an additional user named foo
kubeadm alpha kubeconfig user --client-name=foo