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Hello,
A 401 Unauthorized error indicates that the provided credentials are incorrect or insufficient. Given that you've verified the Service Account's role, the most likely culprits are the token generation or its usage.
I recommend the Service Account approach. It’s widely used and aligns with Kubernetes best practices.
1. Create a Service Account:
First, create a custom Service Account (let’s call it my-service-account) in your Kubernetes namespace. You can do this using a YAML file or directly via the command line:
$kubectl create sa my-service-account
2.Define RBAC Rules:
- Next, define Role-Based Access Control (RBAC) rules for your Service Account. Create a Role or ClusterRole that specifies the permissions needed by your pods. For example:
apiVersion: rbac.authorization.k8s.io/v1
kind: Role
metadata:
name: my-role
rules:
- apiGroups: [""]
resources: ["pods"]
verbs: ["get", "list"] # Adjust permissions as needed
3.Bind Service Account to Role:
- Bind the Service Account (my-service-account) to the Role (my-role) using a RoleBinding or ClusterRoleBinding:
apiVersion: rbac.authorization.k8s.io/v1
kind: RoleBinding
metadata:
name: my-role-binding
subjects:
- kind: ServiceAccount
name: my-service-account
namespace: my-namespace
roleRef:
kind: Role
name: my-role
apiGroup: rbac.authorization.k8s.io
4. Create Your Pod:
- Now create your new pod (let’s call it my-new-pod) that will use the my-service-account:
apiVersion: v1
kind: Pod
metadata:
name: my-new-pod
spec:
serviceAccountName: my-service-account
containers:
- name: my-container
image: my-image
5. Access the Token Inside my-new-pod:
- The Service Account token is automatically mounted as a file inside the pod at
/var/run/secrets/kubernetes.io/serviceaccount/token
. - Your application inside my-new-pod can read this token and use it for authentication when making requests to the Kubernetes API
Test and Verify:
- Deploy my-new-pod and verify that it can access the Kubernetes API using the Service Account token.
Follow the link : https://stackoverflow.com/questions/62029424/how-can-i-create-a-new-kubernetes-pod-from-another-existing-pod
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Even so, i need kubeconfig right, so that I can load it? in that kube config should I pass in the same token? in the kube config plus authorization bearer?
Yes, you'll need a kubeconfig file to interact with the Kubernetes API. This file contains information about the cluster, user credentials, and context.
Example Kubeconfig Structure:
apiVersion: v1 clusters: