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Add tips on node backup #27

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Aug 22, 2023
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Add tips on node backup #27

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e6571c3
Add tips on node backup
libredot Aug 18, 2023
785d786
mark network keys optional
libredot Aug 22, 2023
02c56df
add explanations about session key
libredot Aug 22, 2023
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14 changes: 14 additions & 0 deletions docs/staking/validator-faqs.mdx
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Expand Up @@ -240,3 +240,17 @@ You can query the storage item by visiting [PolkadotJS Apps](https://polkadot.js
![querying chainstate](./img/querying-chainstate.png)

In each era, if there are more validators than the ideal threshold, the inactive validators will stay in the waiting list until they are elected.

## What files should I backup before migrating the validator node to another machine?

It is recommended to have backups of the following files and directories in case your current node becomes inaccessible due to extreme conditions:

1. __Validator Session Keys__: If you are running a validator node, please backup the secret seeds of your session keys for minimal downtime migration. These files are located in the `~/.local/share/gear/chains/vara_network/keystore` directory. You must submit an extrinsic to replace the keys if they are leaked or lost.

2. __Network Key__(optional): The network key uniquely identifies your node in the peer-to-peer network. It is located at `~/.local/share/gear/chains/vara_network/network/secret_ed25519`. If this file is lost, a new peer identity will be randomly generated when the node starts.

3. __Blockchain Database__(optional): The blockchain database resides in the `~/.local/share/gear/chains/vara_network/db` directory. It can be deleted and synchronized from scratch at any time, but keep in mind that this process may take some time.

:::info
Please make sure the old node is stopped before you launch the new node, otherwise replicating session keys across multiple nodes may lead to equivocation slashes.
:::