Share certificates of Caddy

[lens0021]

The current situation is that we manage an EBS volume for caddycerts, which has few files.

The gp EBS volume cannot be mounted to multiple EC2 instances, so that we cannot properly achieve HA.

Posibble solutions:

• Deploying S3 mountpoint CSI
  • https://github.com/awslabs/mountpoint-s3-csi-driver
  • https://docs.aws.amazon.com/ko_kr/AmazonS3/latest/userguide/mountpoint.html
  • It seems it currently does not support the environment other than kubernetes.
• Using S3 Mountpoint on the host machines and mounting it to the containers
• Caddy s3 storage module https://caddy.community/t/new-plugin-s3-compatible-certmagic-storage-module/9775/2 https://github.com/ss098/certmagic-s3

[lens0021]

failed to create driver: cannot create in-cluster config: unable to load in-cluster configuration, KUBERNETES_SERVICE_HOST and KUBERNETES_SERVICE_PORT must be defined