124 lines
3.6 KiB
Markdown
124 lines
3.6 KiB
Markdown
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order: 2
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# Run a Node
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Run a local node and start the REST and JSON-RPC clients {synopsis}
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## Pre-requisite Readings
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- [Installation](./installation.md) {prereq}
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## Automated deployment
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Run the local node
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::: warning
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The script below will remove any pre-existing binaries installed. Use the manual deploy if you want
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to keep your binaries and configuration files.
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:::
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```bash
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./init.sh
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```
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In another terminal window or tab, run the Ethereum JSON-RPC server as well as the SDK REST server:
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```bash
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ethermintcli rest-server --laddr "tcp://localhost:8545" --unlock-key mykey --chain-id 8
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```
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## Manual deployment
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The instructions for setting up a brand new full node from scratch are the the same as running a
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[single node local testnet](./testnet.md#single-node-local-manual-testnet).
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## Start node
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To start your node, just type:
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```bash
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ethermintd start
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```
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## Key Management
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To run a node with the same key every time: replace `ethermintcli keys add $KEY` in `./init.sh` with:
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```bash
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echo "your mnemonic here" | ethermintcli keys add $KEY --recover
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```
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::: tip
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Ethermint currently only supports 24 word mnemonics.
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:::
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You can generate a new key/mnemonic with:
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```bash
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ethermintcli keys add $KEY
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```
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To export your ethermint key as an ethereum private key (for use with Metamask for example):
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```bash
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ethermintcli keys unsafe-export-eth-key $KEY
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```
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For more about the available key commands, use the `--help` flag
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```bash
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ethermintcli keys -h
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```
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### Keyring backend options
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The instructions above include commands to use `test` as the `keyring-backend`. This is an unsecured
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keyring that doesn't require entering a password and should not be used in production. Otherwise,
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Ethermint supports using a file or OS keyring backend for key storage. To create and use a file
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stored key instead of defaulting to the OS keyring, add the flag `--keyring-backend file` to any
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relevant command and the password prompt will occur through the command line. This can also be saved
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as a CLI config option with:
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```bash
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ethermintcli config keyring-backend file
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```
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## Clearing data from chain
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### Reset Data
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Alternatively, you can **reset** the blockchain database, remove the node's address book files, and reset the `priv_validator.json` to the genesis state.
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::: danger
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If you are running a **validator node**, always be careful when doing `ethermintd unsafe-reset-all`. You should never use this command if you are not switching `chain-id`.
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:::
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::: danger
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**IMPORTANT**: Make sure that every node has a unique `priv_validator.json`. **Do not** copy the `priv_validator.json` from an old node to multiple new nodes. Running two nodes with the same `priv_validator.json` will cause you to double sign!
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:::
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First, remove the outdated files and reset the data.
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```bash
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rm $HOME/.ethermintd/config/addrbook.json $HOME/.ethermintd/config/genesis.json
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ethermintd unsafe-reset-all
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```
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Your node is now in a pristine state while keeping the original `priv_validator.json` and `config.toml`. If you had any sentry nodes or full nodes setup before, your node will still try to connect to them, but may fail if they haven't also been upgraded.
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### Delete Data
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Data for the Daemon and CLI binaries should be stored at `~/.ethermintd` and `~/.ethermintcli`, respectively by default. To **delete** the existing binaries and configuration, run:
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```bash
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rm -rf ~/.emint*
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```
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To clear all data except key storage (if keyring backend chosen) and then you can rerun the full node installation commands from above to start the node again.
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## Next {hide}
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Learn about running a Ethermint [testnet](./testnet.md) {hide}
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