Accessing the internet

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The most basic profile, docker-batch, creates instances that do not have any access to the internet.

To have access to it, you must use the docker-network (or one of its children, such as docker-network-ssh) profile instead.

Below is a minimal example of a task that will download the Sadi Carnot page on wikipedia and count the number of lines in the HTML document.

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Python

import qarnot

conn = qarnot.Connection(client_token='<<< MY_SECRET_TOKEN >>>')
task = conn.create_task("Hello World - Network", "docker-network", 1)

task.results = conn.create_bucket("network-out")

task.constants["DOCKER_REPO"] = "qarnotlab/network-example"
task.constants["DOCKER_TAG"] = "latest"

task.constants["DOCKER_CMD"] = "/bin/sh -c "\
 	"'curl https://en.wikipedia.org/wiki/Nicolas_Léonard_Sadi_Carnot"\
 	"| wc -l | tee nb_lines'"

task.run()

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#! Bash

#!/bin/bash

# Your info
export QARNOT_CLIENT_TOKEN="<<<MY_SECRET_TOKEN>>>"

# Create an output bucket
qarnot bucket create \
--name network-out

# Create and run task
qarnot task create \
--name "Hello World - Network" \
--profile docker-network \
--instance 1 \
--result network-out \
--constants \
"DOCKER_REPO=qarnotlab/network-example" \
"DOCKER_TAG=latest" \
$'DOCKER_CMD=/bin/sh -c \"curl https://en.wikipedia.org/wiki/Nicolas_Léonard_Sadi_Carnot | wc -l | tee nb_lines\"'

When starting such an instance, you may although receive an error: qarnot.exceptions.NotEnoughCreditsException: Not enough credits. It might be because you did not fill in your Billing Address. Unlike profiles for batch, profiles with access to the internet require a billing address.

Beware! When an instance with access to the internet is started, it is invoiced from its start, even if it is cancelled or preempted. If you are using worker-type instances, don't forget to shut them down.