.env.mainnet missing BASE_NODE_RPC_PORT — consensus RPC unreachable via docker-compose port mapping

[racket2000]

Summary

The .env.mainnet file is missing BASE_NODE_RPC_PORT, causing the consensus RPC to be unreachable via the Docker Compose port mapping when USE_BASE_CONSENSUS=true.

Details

The Base v1 upgrade documentation states that OP_NODE_RPC_PORT maps to BASE_NODE_RPC_PORT, and says:

If you use base/node, most variables are already set in .env.mainnet and .env.sepolia.

However, .env.mainnet only contains the deprecated variable:

# RPC CONFIGURATION (deprecated)
OP_NODE_RPC_PORT=8545

The BASE_NODE_RPC_PORT equivalent is not set.

Since base-consensus defaults to port 9545 per crates/client/cli/src/rpc.rs, and docker-compose.yml maps 7545:8545, the consensus RPC becomes unreachable from the host.

Other BASE_NODE_* variables, such as BASE_NODE_L1_ETH_RPC and BASE_NODE_METRICS_PORT, are already present in .env.mainnet; this one appears to have been missed.

Impact

• optimism_syncStatus returns empty when queried via localhost:7545.
• Monitoring or health checks relying on the consensus RPC get no response.
• The node itself is fine; RPC works on container port 9545, but it is not reachable through the mapped host port.

Reproduction

git pull origin main

# USE_BASE_CONSENSUS=true is default in .env
docker compose up -d

Querying through the mapped host port returns nothing:

curl -X POST -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","method":"optimism_syncStatus","params":[],"id":1}' \
  http://localhost:7545

Querying from inside the container on port 9545 works:

docker exec base-node-node-1 curl -s -X POST -H "Content-Type: application/json" \
  --data '{"jsonrpc":"2.0","method":"optimism_syncStatus","params":[],"id":1}' \
  http://localhost:9545

Fix

Add the following to .env.mainnet and .env.sepolia:

BASE_NODE_RPC_PORT=8545

This makes base-consensus bind to the port that the existing Docker Compose mapping expects.