[Kubernetes] Adding On-Premise Kubernetes Context in Local PC

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Adding On-Premise Kubernetes Context in Local PC

• In the On-Premise K8s Cluster

kubectl create serviceaccount {USER_NAME}
# serviceaccount/ed created

kubectl create clusterrolebinding {USER_NAME}-binding \
  --clusterrole=cluster-admin \
  --serviceaccount=default:{USER_NAME}
# clusterrolebinding.rbac.authorization.k8s.io/ed-binding created

kubectl create token {USER_NAME}
eyJhbGciOiJSUzI1NiIsImtpZCI6Il91OW... (some long token)

cat /etc/kubernetes/pki/ca.crt
-----BEGIN CERTIFICATE-----
MIIDBTCCAe2gAwIBAgIIOehvyXNS9WkwDQYJKoZIhvcNAQELBQAwFTETMBEGA1UE
... some kind of token
-----END CERTIFICATE-----

• In the Local PC
• Save the result of ca.crt as company-ca.crt

# 1. Add the internal cluster
kubectl config set-cluster {CLUSTER_NAME} \
  --server=https://{CLUSTER_MASTER_IP}:6443 \
  --certificate-authority=/path/to/company-ca.crt \
  --embed-certs=true

# 2. Add your user credentials
kubectl config set-credentials your-user-name --token={TOKEN}

# 3. Create the context link
kubectl config set-context {CLUSTER_NAME} \
  --cluster={CLUSTER_NAME} \
  --user={USER_NAME}

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