To sign a CSR (Certificate Signing Request) file to generate a certificate file as a CA (Certificate Authority), you need:
- the .csr file from the requesting org/user
- your private key (.key) self-signed cert (.crt) files
Then provide those files in the command below to generate admin.crt
openssl x509 -req -in admin.csr -CA ca.crt -CAkey ca.key -out admin.crt
Certificate request self-signature ok
subject=CN = kube-admin