Unable to connect

Steps

Try to connect

With the default KUBECONFIG env or file (ie ~/.kube/config)

kubee kubectl cluster-info

• with a specific kubeconfig

KUBECONFIG=~/.kube/k3s.yaml kubee kubectl cluster-info

More info: https://docs.k3s.io/cluster-access

Check if your certificate is not expired

kubee cert config-client
# with a specific file
KUBECONFIG=~/.kube/k3s.yaml kubee kubectl cluster-info

Example of certificate expired properties with

• Not After : Jun 24 09:29:44 2025 GMT
• Not After : Mar 31 09:29:07 2026 GMT

Example of expired certificate

0: Certificate
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number: 665787286463187628 (0x93d5a02719c0aac)
        Signature Algorithm: ecdsa-with-SHA256
        Issuer: CN=k3s-client-ca@1719221384
        Validity
            Not Before: Jun 24 09:29:44 2024 GMT
            Not After : Mar 31 09:29:07 2026 GMT

How to take a new master k3s config if expired

• Grab the file /etc/rancher/k3s/k3s.yaml and copy it to $HOME/.kube
• Modify the server properties with your server ip. Example:

apiVersion: v1
clusters:
  - cluster:
      certificate-authority-data: LSxxxxQo=
      server: https://189.246.42.265:6443

• Test a connection

KUBECONFIG=~/.kube/k3s.yaml kubee kubectl cluster-info

Optionally:

• you can rename it to the default: $HOME/.kube/config
• you can update the client cert if you use pass to store it

# set your names
KUBEE_PASS_HOME=kubee
KUBEE_CLUSTER_NAME=beau # cluster name
KUBEE_USER_NAME=default # user name

# Save the new client certificate
KUBECONFIG=~/.kube/k3s.yaml kubectl config view --minify --raw --output 'jsonpath={$.users[0].user.client-certificate-data}' | pass insert -m "$KUBEE_PASS_HOME/users/$KUBEE_USER_NAME/client-certificate-data"
# Save the new client ley data
KUBECONFIG=~/.kube/k3s.yaml kubectl config view --minify --raw --output 'jsonpath={$.users[0].user.client-key-data}' | pass insert -m "$KUBEE_PASS_HOME/users/$KUBEE_USER_NAME/client-key-data"

# Test
kubee kubectl cluster-info