Kubernetes will create all the objects and services for Rancher, but it will not become available until we populate the
tls-rancher-ingress secret in the
cattle-system namespace with the certificate and key.
Combine the server certificate followed by any intermediate certificate(s) needed into a file named
tls.crt. Copy your certificate key into a file named
kubectl with the
tls secret type to create the secrets.
kubectl -n cattle-system create secret tls tls-rancher-ingress \ --cert=tls.crt \ --key=tls.key
Note: If you want to replace the certificate, you can delete the
kubectl -n cattle-system delete secret tls-rancher-ingressand add a new one using the command shown above. If you are using a private CA signed certificate, replacing the certificate is only possible if the new certificate is signed by the same CA as the certificate currently in use.
Using a Private CA Signed Certificate
If you are using a private CA, Rancher requires a copy of the CA certificate which is used by the Rancher Agent to validate the connection to the server.
Copy the CA certificate into a file named
cacerts.pem and use
kubectl to create the
tls-ca secret in the
Important: Make sure the file is called
cacerts.pemas Rancher uses that filename to configure the CA certificate.
kubectl -n cattle-system create secret generic tls-ca \ --from-file=cacerts.pem