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Daemon Nginx

Note

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

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from hera.workflows import (
    Container,
    Parameter,
    Steps,
    Workflow,
    models as m,
)

with Workflow(
    generate_name="daemon-nginx-",
    entrypoint="daemon-nginx-example",
) as w:
    nginx_server = Container(
        name="nginx-server",
        daemon=True,
        image="nginx:1.13",
        readiness_probe=m.Probe(
            http_get=m.HTTPGetAction(
                path="/",
                port=80,
            ),
            initial_delay_seconds=2,
            timeout_seconds=1,
        ),
    )
    nginx_client = Container(
        name="nginx-client",
        inputs=Parameter(name="server-ip"),
        image="appropriate/curl:latest",
        command=["/bin/sh", "-c"],
        args=[
            "echo curl --silent -G http://{{inputs.parameters.server-ip}}:80/ && curl "
            "--silent -G http://{{inputs.parameters.server-ip}}:80/"
        ],
    )
    with Steps(name="daemon-nginx-example"):
        s = nginx_server()
        nginx_client(arguments={"server-ip": s.ip})

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apiVersion: argoproj.io/v1alpha1
kind: Workflow
metadata:
  generateName: daemon-nginx-
spec:
  entrypoint: daemon-nginx-example
  templates:
  - container:
      image: nginx:1.13
      readinessProbe:
        httpGet:
          path: /
          port: 80
        initialDelaySeconds: 2
        timeoutSeconds: 1
    daemon: true
    name: nginx-server
  - container:
      args:
      - echo curl --silent -G http://{{inputs.parameters.server-ip}}:80/ && curl --silent
        -G http://{{inputs.parameters.server-ip}}:80/
      command:
      - /bin/sh
      - -c
      image: appropriate/curl:latest
    inputs:
      parameters:
      - name: server-ip
    name: nginx-client
  - name: daemon-nginx-example
    steps:
    - - name: nginx-server
        template: nginx-server
    - - arguments:
          parameters:
          - name: server-ip
            value: '{{steps.nginx-server.ip}}'
        name: nginx-client
        template: nginx-client

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