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Polygon CDK Kurtosis Package

A Kurtosis package that deploys a private, portable, and modular Polygon CDK devnet.

Getting Started

Architecture Diagram

To begin, you will need to install Docker and Kurtosis.

You will also need a few other tools. Run this script to check you have the required versions.

./scripts/tool_check.sh

Once that is good and installed on your system, you can run the following command to deploy the complete CDK stack locally.

This process typically takes around ten minutes.

kurtosis clean --all
kurtosis run --enclave cdk-v1 --args-file params.yml --image-download always .

The command above launches deploys a CDK stack using zkevm-node as the sequencer. Alternatively, to launch a CDK stack using cdk-erigon as a sequencer, you can run the following command.

kurtosis run --enclave cdk-v1 --args-file cdk-erigon-sequencer-params.yml --image-download always .

Let's do a simple L2 RPC test call.

First, you will need to figure out which port Kurtoiss is using for the RPC. You can get a general feel for the entire network layout by running the following command:

kurtosis enclave inspect cdk-v1

That output is quite useful might might also be a little overwhelming. If you want to simply see the port mapping within the cdk-v1 enclave for the zkevm-node-rpc service and the trusted-rpc port, you can use the following command. For this test, let's store the RPC URL in an environment variable.

export ETH_RPC_URL="$(kurtosis port print cdk-v1 zkevm-node-rpc-001 http-rpc)"

That is the same environment variable that cast uses, so you should now be able to run this command. Note that the steps below will assume you have the Foundry toolchain installed.

cast block-number

By default, the CDK is configured in test mode which means there is some pre-funded value in the admin account with address 0xE34aaF64b29273B7D567FCFc40544c014EEe9970.

cast balance --ether 0xE34aaF64b29273B7D567FCFc40544c014EEe9970

Okay let’s send some transactions...

export PK="0x12d7de8621a77640c9241b2595ba78ce443d05e94090365ab3bb5e19df82c625"
cast send --legacy --private-key "$PK" --value 0.01ether 0x0000000000000000000000000000000000000000

Okay let’s send even more transactions... Note that this step will assume you have polygon-cli installed.

polycli loadtest --rpc-url "$ETH_RPC_URL" --legacy --private-key "$PK" --verbosity 700 --requests 500 --rate-limit 5 --mode t
polycli loadtest --rpc-url "$ETH_RPC_URL" --legacy --private-key "$PK" --verbosity 700 --requests 500 --rate-limit 10 --mode t
polycli loadtest --rpc-url "$ETH_RPC_URL" --legacy --private-key "$PK" --verbosity 700 --requests 500 --rate-limit 10 --mode 2
polycli loadtest --rpc-url "$ETH_RPC_URL" --legacy --private-key "$PK" --verbosity 700 --requests 500 --rate-limit 3  --mode uniswapv3

Pretty often, you will want to check the output from the service. Here is how you can grab some logs:

kurtosis service logs cdk-v1 zkevm-agglayer-001

In other cases, if you see an error, you might want to get a shell in the container to be able to poke around.

kurtosis service shell cdk-v1 zkevm-node-sequencer-001

One of the most common ways to check the status of the system is to make sure that batches are going through the normal progression of trusted, virtual, and verified:

cast rpc zkevm_batchNumber
cast rpc zkevm_virtualBatchNumber
cast rpc zkevm_verifiedBatchNumber

If the number of verified batches is increasing, then it means the system works properly.

To access the zkevm-bridge user interface, open this URL in your web browser.

open $(kurtosis port print cdk-v1 zkevm-bridge-proxy-001 web-ui)

When everything is done, you might want to clean up with this command which stops everything and deletes it.

kurtosis clean --all

For more information about the CDK stack and setting up Kurtosis, visit our documentation on the Polygon Knowledge Layer.

Contact

  • For technical issues, join our Discord.
  • For documentation issues, raise an issue on the published live doc at our main repo.

License

Copyright (c) 2024 PT Services DMCC

Licensed under either:

as your option.

The SPDX license identifier for this project is MIT OR Apache-2.0.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.