References
Rancher HA Selfsigned cert installation: https://gist.github.com/superseb/4ce52616d57dce8b58835d19c1a2b1b7
Rancher node cleanup: https://gist.github.com/superseb/2cf186726807a012af59a027cb41270d
HAProxy: https://www.haproxy.com/documentation/hapee/latest/installation/rancher/
Rancher Cert Manager Upgrade: https://itnext.io/rancher-cert-manager-upgrade-bd15468bac9c
Rancher 2 and letencrypt: https://www.2stacks.net/blog/rancher-2-and-letsencrypt/
Kubernetes With Rancher 2.x and Let’s Encrypt Free Certificates: https://medium.com/better-programming/rancher-2-x-lets-encrypt-dns-01-challenge-and-route53-c636c8966aab
Let’s Encrypt and Rancher 2.0 with cert-manager: https://github.com/joaoverissimo/letsencrypt-rancher-cert-manager-config