Run a baker node on macOS

This guide describes how to configure and manage baking on a macOS node.

Prerequisites

• Have the administrator password to your computer.

• Install and run the node

Configure a node as a baker

To run a node as baker, you first have to generate baker keys and then register the keys on an account. Depending on whether you are using Desktop Wallet or Concordium Wallet for Mobile / Concordium Legacy Wallet, the process to generate baker keys differs. For information about the process for each type of wallet, see Bakers. You then need to move the generated baker keys file to a location accessible by the node, and finally specify this location in the service file for the Concordium Node.

Note

Baker credentials registered on mainnet will not work with a testnet node and vice versa.

On mainnet

1. Move the baker-credentials.json file to the node’s config folder:

   $sudo cp "/path/to/mainnet/baker-credentials.json" "/Library/Application Support/Concordium Node/Mainnet/Config/baker-credentials.json"
   

   (replacing /path/to/mainnet/baker-credentials.json with the actual file path to your baker credentials for mainnet).

2. Edit the service file as an administrator. The service file is found here: /Library/Concordium Node/LaunchDaemons/software.concordium.mainnet.node.plist

3. Underneath the <dict> tag in the EnviromentVariables section of the file add the following:

   <!-- Path to the baker credentials file. -->
   <key>CONCORDIUM_NODE_BAKER_CREDENTIALS_FILE</key>
   <string>/Library/Application Support/Concordium Node/Mainnet/Config/baker-credentials.json</string>
   

4. Restart your node by running Concordium Node Stop Mainnet (if running) and then Concordium Node Start Mainnnet.

On testnet

1. Move the baker-credentials.json file to the node’s config folder:

   $sudo cp "/path/to/testnet/baker-credentials.json" "/Library/Application Support/Concordium Node/Testnet/Config/baker-credentials.json"
   

   (replacing /path/to/testnet/baker-credentials.json with the actual file path to your baker credentials for testnet).

2. Edit the service file as an administrator. The service file is found here: /Library/Concordium Node/LaunchDaemons/software.concordium.testnet.node.plist

3. In the EnviromentVariables section of the file add the following:

   <!-- Path to the baker credentials file. -->
   <key>CONCORDIUM_NODE_BAKER_CREDENTIALS_FILE</key>
   <string>/Library/Application Support/Concordium Node/Testnet/Config/baker-credentials.json</string>
   

4. Restart your node by running Concordium Node Stop Testnet (if running) and then Concordium Node Start Testnet.

In the Desktop Wallet, Concordium Wallet for Mobile, and Concordium Legacy Wallet, a bread icon is added to the account associated with the baker node. The bread icon appears as soon as the transaction has been submitted. That is, before the two epochs have elapsed.

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