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Deploy SSH Keys on Balena Devices per Script

How to use

You need a:

  • Node
  • Yarn
  • SSH

Install deps with yarn install. Then you have to create two files. A .env to hold the two relevant variables:

ACCESS_TOKEN=****************
SSH_PRIVATE_KEY_PATH=/key/to/ssh/private/key
BALENA_API_HOST=https://api.balena.example.org/

The tool use balena tunnel to create a proxy tunnel to the device. You should make sure that you can.

The access token is the access token for the balena service. The same you use for the balena-cli. Maybe you have to create a token. The private ssh key is that part of the key pair, that is already on device.

The second file you have to create is a options.json. That json has the following structur and holds the information, what keys should be add and on which device. You can define the boxes directly per uuid in the array devices or with the application or fleetname in the array fleets. But it is not possible to use both ways.

{
    "devices": [
        "device_uuid",
        ...
    ],
    // or
    "fleets": [
        "Application_1",
        ...
    ],

    "blacklist": [
        "devices_that_will_skipped",
        ...
    ],
    "keys": [
        "a-public-ssh-key",
        ...
    ]
}

After you created the files you can start the script with the command yarn start.

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