fixturenet-optimism-stack/stack/fixturenet-optimism/l2-only.md

fixturenet-optimism (L2-only)

Instructions to setup and deploy L2 fixturenet using Optimism

Prerequisite: An L1 Ethereum RPC endpoint (with unprotected txs enabled)

Setup

Clone the stack repo:

laconic-so fetch-stack git.vdb.to/cerc-io/fixturenet-optimism-stack

Clone required repositories:

laconic-so --stack ~/cerc/fixturenet-optimism-stack/stack/fixturenet-optimism setup-repositories

# If this throws an error as a result of being already checked out to a branch/tag in a repo, remove concerned repositories and re-run the command

Build the container images:

laconic-so --stack ~/cerc/fixturenet-optimism-stack/stack/fixturenet-optimism build-containers

This should create the required docker images in the local image registry:

• cerc/optimism-contracts
• cerc/optimism-l2geth
• cerc/optimism-op-node
• cerc/optimism-op-batcher
• cerc/optimism-op-proposer

Create a deployment

First, create a spec file for the deployment, which will map the stack's ports and volumes to the host:

laconic-so --stack ~/cerc/fixturenet-optimism-stack/stack/fixturenet-optimism deploy init --map-ports-to-host any-fixed-random --output fixturenet-optimism-spec.yml

Ports and Data volumes

The default port and volume mappings to host can be customized by editing the "spec" file generated by laconic-so deploy init

---

Once you've made any needed changes to the spec file, create a deployment from it:

laconic-so --stack ~/cerc/fixturenet-optimism-stack/stack/fixturenet-optimism deploy create --spec-file fixturenet-optimism-spec.yml --deployment-dir fixturenet-optimism-deployment

Set chain env variables

Inside the deployment directory, open the file config.env and add the following variables to point the stack at your L1 rpc and provide account credentials (defaults):

# External L1 endpoint
CERC_L1_CHAIN_ID=
CERC_L1_RPC=
CERC_L1_HOST=
CERC_L1_PORT=

# External L1 Beacon node endpoint
CERC_L1_BEACON=

# URL to get CSV with credentials for accounts on L1
# that are used to send balance to Optimism Proxy contract
# (enables them to do transactions on L2)
CERC_L1_ACCOUNTS_CSV_URL=

# OR
# Specify the required account credentials for the Admin account
# Other generated accounts will be funded from this account, so it should contain ~20 Eth
CERC_L1_ADDRESS=
CERC_L1_PRIV_KEY=

# Optional

# Funding amounts for proposer and batcher accounts on L1
# (Accounts funded using the Admin account)
CERC_PROPOSER_AMOUNT=
CERC_BATCHER_AMOUNT=

• NOTE: If L1 is running on the host machine, use host.docker.internal as the hostname to access the host port, or use the ip a command to find the IP address of the docker0 interface (this will usually be something like 172.17.0.1 or 172.18.0.1)

Start the stack

Start the deployment:

laconic-so deployment --dir fixturenet-optimism-deployment start

1. The stack will check for a response from the L1 endpoint specified in your env file
2. The fixturenet-optimism-contracts service will configure and deploy the Optimism contracts to L1, exiting when complete. This may take several minutes; you can follow the progress by following the container's logs (see below)
3. The op-node and op-geth services will initialize themselves (if not already initialized) and start
4. The remaining services, op-batcher and op-proposer will start

Logs

To list and monitor the running containers:

laconic-so --stack fixturenet-optimism deploy ps

# With status
docker ps

# Check logs for a container
docker logs -f <CONTAINER_ID>

Example

Try out the example to bridge ETH from L1 to L2

Note: Use external L1 endpoint as L1_RPC and add flag --add-host="host.docker.internal:host-gateway" to docker run commands if necessary

Clean up

To stop all L2 services running in the background, while preserving chain data:

laconic-so deployment --dir fixturenet-optimism-deployment stop

To stop all L2 services and also delete chain data:

laconic-so deployment --dir fixturenet-optimism-deployment stop --delete-volumes

Troubleshooting

See Troubleshooting