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108 lines
5.0 KiB
Markdown
108 lines
5.0 KiB
Markdown
---
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html: evm-sidechain-run-a-validator-node.html
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parent: evm-sidechains.html
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blurb: Learn how to run a validator node on the EVM Sidechain Devnet.
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labels:
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- Development, Interoperability
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status: not_enabled
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---
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# Run a Validator Node on an EVM Sidechain
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## Create Your Validator
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Use your node consensus public key (`exrpvalconspub...`) to create a new validator by staking XRP tokens. You can find your validator public key by running:
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```bash
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exrpd tendermint show-validator
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```
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To create your validator on Devnet, use the following command:
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```bash
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exrpd tx staking create-validator \
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--amount=1000000000000000000000axrp \
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--pubkey=$(exrpd tendermint show-validator) \
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--moniker="<your_custom_moniker>" \
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--chain-id=<chain_id> \
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--commission-rate="0.05" \
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--commission-max-rate="0.10" \
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--commission-max-change-rate="0.01" \
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--min-self-delegation="1000000" \
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--gas="auto" \
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--gas-prices="0.025aphoton" \
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--from=<key_name>
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```
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**Note** When specifying commission parameters, the `commission-max-change-rate` is used to measure % *point* change over the `commission-rate`. For example, 1% to 2% is a 100% rate increase, but only 1 percentage point.
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**Note** `Min-self-delegation` is a strictly positive integer that represents the minimum amount of self-delegated voting power your validator must always have. A `min-self-delegation` of `1000000` means your validator will never have a self-delegation lower than `1 axrp`. <!-- STYLE_OVERRIDE: will -->
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You can confirm that you are in the validator set by using a third-party explorer.
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## Edit Validator Description
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You can edit your validator's public description. This info identifies your validator, and _delegators_ use it when they decide to stake XRP tokens to a particular validator. Make sure to provide input for every flag below. If a flag is not included in the command, the field defaults to empty (`--moniker` defaults to the machine name), if the field has never been set, or remains the same, if it has been set in the past. <!-- SPELLING_IGNORE: delegators --><!-- STYLE_OVERRIDE: defaults to -->
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The <key_name> specifies which validator you are editing. If you choose to not include certain flags, remember that the --from flag must be included to identify the validator to update.
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The `--identity` can be used as to verify identity with systems like Keybase or UPort. When using with Keybase `--identity` must be populated with a 16-digit string that is generated with a [keybase.io](https://keybase.io/) account. It is a cryptographically secure method of verifying your identity across multiple online networks. The Keybase API allows us to retrieve your Keybase avatar. This is how you can add a logo to your validator profile. <!-- SPELLING_IGNORE: uport -->
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```bash
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exrpd tx staking edit-validator
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--moniker="<your_custom_moniker>" \
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--website="https://xrpl.org" \
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--identity=6A0D65E29A4CBC8E \
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--details="<your_validator_description>" \
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--chain-id=<chain_id> \
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--gas="auto" \
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--gas-prices="0.025axrp" \
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--from=<key_name> \
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--commission-rate="0.10"
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```
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Note that the `commission-rate` value must adhere to the following invariants:
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* Must be between 0 and the validator's `commission-max-rate`
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* Must not exceed the validator's `commission-max-change-rate` which is the maximum % point change rate **per day**. In other words, a validator can only change its commission once per day and within `commission-max-change-rate` bounds.
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## View Validator Description
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View the validator's information with this command:
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```bash
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exrpd query staking validator <account>
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```
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## Track Validator Signing Information
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To track a validator's signatures from past transactions use the `signing-info` command.
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```bash
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exrpd query slashing signing-info <validator-pubkey> --chain-id=<chain_id>
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```
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## Unjail Validator
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<!-- SPELLING_IGNORE: unjail -->
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When a validator is "jailed" for downtime, you must submit an `Unjail` transaction from the operator account to restore block proposer awards (depending on the zone fee distribution).
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```bash
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exrpd tx slashing unjail --from=<key_name> --chain-id=<chain_id>
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```
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## Confirm Your Validator is Running
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Your validator is active if the following command returns anything:
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```bash
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exrpd query tendermint-validator-set | grep "$(exrpd tendermint show-address)"
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```
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You should now see your validator in one of the Exrp explorers. You are looking for the `bech32` encoded `address` in the `~/.exprd/config/priv_validator.json` file. <!-- SPELLING_IGNORE: exrp -->
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**Note** To be in the validator set, you must have more total voting power than the 100th validator.
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## Halting Your Validator
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When attempting to perform routine maintenance or planning for an upcoming coordinated upgrade, it can be useful to have your validator systematically and gracefully halt. Set the `halt-height` to the height at which you want your node to shut down, or pass the `--halt-height` flag to `exrpd`. The node shuts down with a 0 exit code at that given height after committing the block. |