# Pastebin MHXEOc5V
sorin-mihai: configured like: 
#############
# TLS options
#############
kolla_enable_tls_internal: "yes"
kolla_internal_fqdn_cert: "/etc/letsencrypt/live/testservers.com-0001/haproxy-internal.pem"
kolla_backend_internal_key: "/etc/letsencrypt/live/testservers.com-0001/privkey.pem"
kolla_backend_internal_cert: "/etc/letsencrypt/live/testservers.com-0001/fullchain.pem"

where haproxy-internal.pem has the certs + key combined in a single file