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Sidecar

Note

This example is a replication of an Argo Workflow example in Hera. The upstream example can be found here.

This example showcases how one can run a sidecar container with Hera

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from hera.workflows import Container, UserContainer, Workflow

with Workflow(generate_name="sidecar-", entrypoint="sidecar-example") as w:
    Container(
        name="sidecar-example",
        image="alpine:latest",
        command=["sh", "-c"],
        args=[
            " apk update && apk add curl "
            "&& until curl -XPOST "
            "'http://127.0.0.1:8086/query' "
            "--data-urlencode 'q=CREATE "
            "DATABASE mydb' ; do sleep .5; "
            "done && for i in $(seq 1 20); "
            "do curl -XPOST "
            "'http://127.0.0.1:8086/write?db=mydb' "
            "-d "
            '"cpu,host=server01,region=uswest '
            'load=$i" ; sleep .5 ; done '
        ],
        sidecars=UserContainer(name="influxdb", image="influxdb:1.2", command=["influxd"]),
    )

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: sidecar-
spec:
  entrypoint: sidecar-example
  templates:
  - name: sidecar-example
    sidecars:
    - name: influxdb
      image: influxdb:1.2
      command:
      - influxd
    container:
      image: alpine:latest
      args:
      - ' apk update && apk add curl && until curl -XPOST ''http://127.0.0.1:8086/query''
        --data-urlencode ''q=CREATE DATABASE mydb'' ; do sleep .5; done && for i in
        $(seq 1 20); do curl -XPOST ''http://127.0.0.1:8086/write?db=mydb'' -d "cpu,host=server01,region=uswest
        load=$i" ; sleep .5 ; done '
      command:
      - sh
      - -c

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