Solana: Error: expected environment variable `ANCHOR_WALLET` is not set

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Error: Anchor Wallet not defined on Solana node

The error message indicates that the ANCHOR_WALLET environment variable is not defined, which is causing an issue with setting up a connection to a Solana cluster. This can be frustrating, especially when working with Anchor projects.

Understanding the error

When you run your application or script, it attempts to connect to a Solana cluster using the Connection class provided by the Anchor SDK. However, without the required environment variables defined, the connection attempt fails.

Solution: Setting environment variables

To resolve this issue, you need to ensure that the ANCHOR_WALLET environment variable is defined on your Solana node. Here’s how to do that:

• Check your node version: Make sure that your Solana node version is compatible with Anchor. You can check the version using the following command:

solana-cli -v

• Set the environment variable on your node:

You can set an environment variable directly on your operating system. Here’s how to do it for Linux and macOS:

Linux:

• Create a new file called .env with the following contents:

ANCHOR_WALLET="your-anchor-wallet-password"

• Set the ANCHOR_WALLET environment variable in your shell configuration file (e.g. ~/.bashrc or ~/.zshrc). Add the following line to set the variable:

export ANCHOR_WALLET="your-anchor-wallet-password"

• Restart your terminal or run source ~/.bashrc to apply the changes.

macOS:

• Create a new file named .env with the following contents:

ANCHOR_WALLET="your-anchor-wallet-password"

• Set the ANCHOR_WALLET environment variable in your shell configuration file (e.g. ~/.bash_profile or ~/.zshrc). Add the following line to set the variable:

export ANCHOR_WALLET="your-anchor-wallet-password"

Check Environment Variable

After setting the environment variable, verify that it is present by running the following command:

echo $ANCHOR_WALLET

If you see the value of your ANCHOR_WALLET environment variable, everything is working as expected.

Next Steps:

After setting the environment variable, you should be able to connect to a Solana cluster using the Anchor SDK. Be sure to check the official Anchor documentation for any additional configuration or requirements specific to your use case.

If you are still encountering issues, feel free to provide more details about your configuration and error messages for further assistance!