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    • 🖥️Running a node/validator
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        • Slashing information
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On this page
  • Run A Full Node On A New Machine
  • Verify Mnemonics Are Backed Up
  • Sync Full Node
  • Stop Validator Node
  • Migrate priv_validator_key.json

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  1. Infrastructure
  2. Running a node/validator
  3. Maintaining a node/validator

Migrating a Validator

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Last updated 5 months ago

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Ensure you Validator Backup before you migrate it. Do not forget!

On A New Machine

Verify Mnemonics Are Backed Up

If you don't have the mnemonics saved, you can back it up with:

# from the validator machine
secretd keys export mykey

This prints the private key to stderr, you can then paste in into the file mykey.backup.

Sync Full Node

To check on the new full node if it finished catching-up:

# on the new full node
secretd status | jq .sync_info

# expected output should be similar to:
{
  "latest_block_hash": "EEE123FB3679525B7603B91CDB654879EA25375865AC58DC275C562E2EC07A5A",
  "latest_app_hash": "8BC5C45BA7D049F32D999AF8E9D8346BCD8B7A4DB958EA6B2C5322B96971DB95",
  "latest_block_height": "3944928",
  "latest_block_time": "2022-06-20T19:16:30.14988796Z",
  "earliest_block_hash": "76BA3679B642D2FFB5ED967A241021C73D2B2058F42792FCD1ACAC9D64C87603",
  "earliest_app_hash": "05F67C619449262C8898D533B91A6FEAAB5F5652FB45EB5AFE1E972402B8EDF0",
  "earliest_block_height": "3344001",
  "earliest_block_time": "2022-05-11T15:32:59.767672375Z",
  "catching_up": false
}

Only continue if catching_up is false

Stop Validator Node

To prevent double signing, you should stop the validator node before stopping the new full node to ensure the new node is at a greater block height than the validator node.

# on the validator node
sudo systemctl stop secret-node

The validator should start missing blocks at this point. This is the desired behavior!

Migrate priv_validator_key.json

On the validator node, the file is ~/.secretd/config/priv_validator_key.json.

You can copy it manually or for example you can copy the file to the new machine using ssh:

# on the validator node/old machine
scp ~/.secretd/config/priv_validator_key.json ubuntu@new_machine_ip:~/.secretd/config/priv_validator_key.json

After being copied, the key (priv_validator_key.json) should then be removed from the old node's config directory to prevent double-signing if the node were to start back up.

# on the validator node/old machine
mv ~/.secretd/config/priv_validator_key.json ~/.secretd/bak_priv_validator_key.json

Restart Your Migrated Validator

# on the new machine/new validator
sudo systemctl restart secret-node

The new node should start signing blocks once caught up.

Please read about .

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Run A Full Node
the dangers in running a validator