Create Self signed certificates on RKE2

Import your own certificates for RKE 

please modify the <FQDN> with your current fqdn before applying the following command.

1. Now generate a secret with the following commands.

   BASH

   openssl req -x509 \
   -newkey rsa:4096 \
   -sha256 \
   -days 3650 \
   -nodes \
   -keyout <fQDN>.key \
   -out <FQDN>.crt \
   -subj "/CN=<FQDN>" \
   -addext "subjectAltName=DNS:www.<FQDN>,DNS:<FQDN>"

2. For expertflow namespace:

   BASH

   kubectl -n expertflow create secret tls ef-ingress-tls-secret --key  <fqdn>.key --cert <fqdn>.crt

3. For ef-external namespace

   BASH

   kubectl -n ef-external  create secret tls ef-ingress-tls-secret --key  <fqdn>.key --cert <fqdn>.crt