Hello World

The Nosana job specification allows you to define and run any shell command to run inside a container.
In this example we will run an Ubuntu container to use the echo command to print "hello world"

JSON Job Schema

Here below we can see how with the ops array.
Each job has a type, id, and an args object containing:

• cmd: An array of shell commands that need to be executed, in this case the command echo hello world
• image: The container image used to run the shell commands, in this case an Ubuntu container.

Info

Create a file named hello_world.json, copy and paste the following into it:

{
  "version": "0.1",
  "type": "container",
  "meta": {
    "trigger": "cli"
  },
  "ops": [
    {
      "type": "container/run",
      "id": "hello-world",
      "args": {
        "cmd": ["echo hello world"],
        "image": "ubuntu"
      }
    }
  ]
}

Command

Run the following command to post the job to the network, we'll use the --wait flag to wait for the results.

nosana job post --file hello_world.json --market 97G9NnvBDQ2WpKu6fasoMsAKmfj63C9rhysJnkeWodAf --wait

Output

When the Nosana job is posted successfully you should see something similar to the following:

  _   _
 | \ | | ___  ___  __ _ _ __   __ _
 |  \| |/ _ \/ __|/ _` | '_ \ / _` |
 | |\  | (_) \__ \ (_| | | | | (_| |
 |_| \_|\___/|___/\__,_|_| |_|\__,_|

Reading keypair from /home/djmbritt/.nosana/nosana_key.json

Network:	mainnet
Wallet:		4WtG17Vn3SSoTAVvXxpopQTG3Qo9NUK28Zotv4rL1ccv
SOL balance:	0.02789192 SOL
NOS balance:	54.511837 NOS
ipfs uploaded:	https://nosana.mypinata.cloud/ipfs/QmVp8m3Uq1Cm6JJ3NsuTMSGLNnqXa1mC85uV7YxBREQ78p
posting job to market 97G9NnvBDQ2WpKu6fasoMsAKmfj63C9rhysJnkeWodAf for price 0.000115 NOS/s (total: 0.8280 NOS)
job posted with tx o52uZn3beCQAXe4rcvcsyRshCjGrFsFSJvRRUZZLpXNWxNArN7WzVjfZYNn6Sn15akqpM4fc4c45s7vxd49SAzK!
Service will be exposed at https://5L4SLcpXFiR5Fw3UvGzbSsZfXn66UMjgieTmmJj3kdwM.node.k8s.prd.nos.ci
Job:		https://explorer.nosana.io/jobs/58QFVuyJo6xuuUwtjSW4JvkJogNmt8zhec9SXsWW3mLr
JSON flow:	https://nosana.mypinata.cloud/ipfs/QmVp8m3Uq1Cm6JJ3NsuTMSGLNnqXa1mC85uV7YxBREQ78p
Market:		https://explorer.nosana.io/markets/97G9NnvBDQ2WpKu6fasoMsAKmfj63C9rhysJnkeWodAf
Price:		0.000115 NOS/s
Status:		RUNNING
Node:		https://explorer.nosana.io/nodes/9ZNv6iqU1GbHjitG1QLpBU92Tc8wnQo2bMNLSZcDwkXA
Start Time:	Tue Jul 30 2024 14:44:53 GMT-0400 (Atlantic Standard Time)
Duration:	8 seconds
Total Costs:	0.00092 NOS
Status:		COMPLETED
Result:		https://nosana.mypinata.cloud/ipfs/QmPvpBfknTZVoWA3tNLk1VBoNksqAaFNvgogDAhkccPchS
Logs:

- Executed step hello-world in 0.111s
hello world

Exited with status success with code 0

As we can see the output of the commands we specified in the job are logged to the standard output, and displayed back to us in the logs of the results.