secret.yaml

apiVersion: v1
kind: Secret
metadata:
  name: ssl_domain1
  namespace: your-namespace
type: Opaque
data:
  tls.crt: LS0tLS1CRUdJTiBDRVJUSU ... # public key
  tls.key: LS0tLS1CRUdJTiBSU0EgU ...  # private key
---
apiVersion: v1
kind: Secret
metadata:
  name: ssl_domain2
  namespace: your-namespace
type: Opaque
data:
  tls.crt: LS0tLS1CRUdJTiBDRVJUSU ... # public key
  tls.key: LS0tLS1CRUdJTiBSU0EgU ...  # private key
...