prod1.example.com:

  connect:
    type: ssh
    host: backuphost.example.com
    user: root
    port: 22
    identity_file: /root/.ssh/id_ed25519

  schedule:
    # we cannot infer a schedule from steps below, thus define one here
    type: cron
    cron: "@every 10m" # see https://godoc.org/github.com/robfig/cron

  steps:

    # pull datasets from remote to local
    - type: pull
      mapping: {
        "zroot<":"storage/backups/zrepl/prod1.example.com/zroot"
        "zroot/tmp": "!"
      }

    # prune the snaphots we pulled
    - type: prune
      policy: grid
      grid: 1x1h(keep=all) | 24x1h | 35x1d | 6x30d
      dataset_filter: {
        "storage/backups/zrepl/prod1.example.com/zroot<": ok
      }
      snapshot_filter: {
        snapshot_prefix: zrepl_
      }