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Zombienet Installation:

You can download executables of the Zombienet CLI from paritytech/zombienet/releases

  • Download the latest Zombienet CLI according to your operating system.

💡 Tip: If you want the executable to be available system-wide then make sure you place it in one of your $PATH directories.

wget https://github.com/paritytech/zombienet/releases/download/v1.3.71/zombienet-macos
chmod +x zombienet-macos 
cp zombienet-macos /usr/local/bin

Then invoke it anywhere like :

# Mac Os
zombienet-macos --help
# Linux
zombienet-linux-x64 --help

You should see some similar output to indicate it's installed and working properly:

Usage: zombienet [options] [command]

Options:
  -c, --spawn-concurrency <concurrency>  Number of concurrent spawning process to launch, default is 1
  -p, --provider <provider>              Override provider to use (choices: "podman", "kubernetes", "native")
  -m, --monitor                          Start as monitor, do not auto cleanup network
  -h, --help                             display help for command

Commands:
  spawn <networkConfig> [creds]          Spawn the network defined in the config
  test <testFile> [runningNetworkSpec]   Run tests on the network defined
  setup <binaries...>                    Setup is meant for downloading and making dev environment of Zombienet ready
  version                                Prints zombienet version
  help [command]                         display help for command

Setting up Zombienet config:

You may use the provided reference implementation from the repository or make your own. We provide a simple configuration for you zombienet-config.toml which spins up two validators for the relay chain, and one collator for your parachain to get you quickly upto speed.

⚠️ Note: The path of the polkadot executable used there is ./bin/polkadot which means you need to have a folder called bin inside the repository directory which contains your compiled polkadot binary named as polkadot. In addition to that since version 1.1.0, you will also need to place the polkadot-execute-worker and the polkadot-prepare-worker binaries to be inside bin. As a user you don't need to interact with these but these are required to start up the main relay chain polkadot software. You can find all three here

More instructions here: Simulate parachains in a test network