Example 1. Data Ingress using an Ephemeral Volume

This example demonstrates how volume creation, data ingress, and mounts work. We will create an ephemeral volume (called eph_vol_1), accomplish data ingress from a public GitHub repo, mount the volume into a job container, and access the data using the program cat.

This example will work for you without any modification because there are no secrets involved.

version: v1
volumes:
  eph_vol_1:
    reference: volume://user/ephemeral
    ingress:
      - source:
          uri: https://raw.githubusercontent.com/octocat/Hello-World/master/README
        destination:
          uri: file://README
jobs:
  cat-file:
    image:
      uri: docker://alpine
    mounts:
      eph_vol_1:
        location: /data
    command:
      - /bin/sh
      - '-c'
      - cat /data/README
    resource:
      cpu:
        cores: 2
        affinity: NUMA
      memory:
        size: 2GB

The job outputs the following text in the logs.

Hello World!

This pattern works well in situations where you need to access publicly available data (from a public git repo, ftp server, etc) and the result of your analysis can be reasonably obtained from logs instead of saving output data via egress or a persistent volume.