# Deploy an erigon rpc for testnet

## Deployment Overview

* Erigon RPC can be deployed independently without relying on other testnet RPC components (CDK / Prover / Database). You can choose to deploy it together with JSON-RPC or separately.
* Erigon RPC depends on a JSON-RPC and an upstream DataStreamer.
* Recommended configuration: CPU: 4 vCores, RAM: 32GB, Disk: 1TB, NVMe SSD. Higher IOPS and throughput performance will yield better results. It is recommended to have 250,000 IOPS and 1000 MiB/s throughput.

## Deployment Steps

### Prepare configuration files

#### docker compose file

```yaml
version: "3.5"
networks:
  default:
    name: cdk-erigon
services:
  cdk-erigon-rpc:
    container_name: cdk-erigon-rpc
    image: merlinadmin/cdk-erigon:v2.0.3
    stop_grace_period: 600s
    restart: always
    environment:
      - CDK_ERIGON_SEQUENCER=0
    ports:
      - 9123:8123
      - 7990:6990
    volumes:
      - ./erigon_config/config-rpc.yaml:/usr/src/app/config.yaml
      - ./erigon_config/dynamic-merlintestnet-allocs.json:/usr/src/app/dynamic-merlintestnet-allocs.json
      - ./erigon_config/dynamic-merlintestnet-chainspec.json:/usr/src/app/dynamic-merlintestnet-chainspec.json
      - ./erigon_config/dynamic-merlintestnet-conf.json:/usr/src/app/dynamic-merlintestnet-conf.json
      - ./erigon_config/dynamic-merlintestnet-block.json:/usr/src/app/dynamic-merlintestnet-block.json
      - ./erigon_data/data:/usr/src/app/data/
    command: >
      --http.vhosts=* --http.corsdomain=* --ws --config=/usr/src/app/config.yaml
    logging:
        options:
          max-size: "1g"
          max-file: "3"
```

#### config-rpc.yaml

```yaml
datadir: /usr/src/app/data/
chain: dynamic-merlintestnet
http: true
private.api.addr: localhost:9098
torrent.port: 42070
authrpc.port: 8552
zkevm.l2-chain-id: 686868
zkevm.l2-sequencer-rpc-url: http://testnet-datastreamer.merlinchain.io:2081
zkevm.l2-datastreamer-url: testnet-datastreamer.merlinchain.io:2080
zkevm.l1-chain-id: 55555
zkevm.l1-rpc-url: https://testnet-l1.merlinchain.io

zkevm.address-sequencer: "0xDCdB53f6633c9D290971Af961689c96B73B79c75"
zkevm.address-zkevm: "0x8173da1A9d41287158E9b6E38Ca9CDabBAE6bb6B"
zkevm.address-admin: "0x74c4A7265Ac6B8a8AD3Ab99071B63c007616Fb33"
zkevm.address-rollup: "0xAefb2f4db0766F0D76c47d0dbc0A712D653cace6"
zkevm.address-ger-manager: "0x07eb659bd996Ac74c154dfe86Ea875570647961C"

zkevm.l1-rollup-id: 1
zkevm.l1-first-block: 24925
zkevm.l1-block-range: 20000
zkevm.l1-query-delay: 6000
zkevm.l1-highest-block-type: latest
zkevm.rpc-ratelimit: 300
zkevm.datastream-version: 2
zkevm.rebuild-tree-after: 100000

log.console.verbosity: 3

zkevm.executor-urls: ""
zkevm.executor-strict: false
zkevm.witness-full: true

zkevm.sequencer-block-seal-time: "3s"
zkevm.sequencer-batch-seal-time: "10s"

zkevm.data-stream-host: "localhost"
zkevm.data-stream-port: 6990
zkevm.data-stream-writeTimeout: "100s"
zkevm.default-gas-price: 1000000000
zkevm.max-gas-price: 0
zkevm.gas-price-factor: 0.000001
externalcl: true
http.api: [eth, debug, net, trace, web3, erigon, txpool, zkevm]
http.addr: 0.0.0.0
http.port: 8123
http.vhosts: any
http.corsdomain: any
ws: true
ws.addr: 0.0.0.0
ws.port: 8124
db.read.concurrency: 20000
txpool.globalslots: 100000
networkid: 686868
```

#### Static configurations

```shell
wget https://rpc-snapshot.merlinchain.io/erigon/dynamic-merlintestnet-allocs.json
wget https://rpc-snapshot.merlinchain.io/erigon/dynamic-merlintestnet-chainspec.json
wget https://rpc-snapshot.merlinchain.io/erigon/dynamic-merlintestnet-conf.json
wget https://rpc-snapshot.merlinchain.io/erigon/dynamic-merlintestnet-block.json
```

### Snapshot

#### Download erigon data snapshot

```shell
wget https://rpc-snapshot.merlinchain.io/erigon/testnet_erigon_data.tar.gz
```

#### Launch erigon

* Ensure that the erigon-config and erigon-data directories are consistent with the volumes configuration in docker-compose.yml.

```shell
docker compose up -d cdk-erigon-rpc
```


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