mirror of
https://github.com/0glabs/0g-chain.git
synced 2024-11-10 18:15:19 +00:00
46 lines
1.4 KiB
Markdown
46 lines
1.4 KiB
Markdown
# Kava-9 Rollback Instructions
|
|
|
|
In the event that the Kava-9 relaunch is unsuccessful, we will restart the Kava-8 chain using the last known state.
|
|
|
|
In order to restore the previous chain, the following data must be recovered by validators:
|
|
|
|
- The database that contains the state of the previous chain (in ~/.kvd/data by default)
|
|
- The priv_validator_state.json file of the validator (in ~/.kvd/data by default)
|
|
|
|
If you don't have the database data, the Kava developer team or another validator will share a copy of the database via Amazon s3 or a similar service. You will be able to download a copy of the data and verify it before starting your node.
|
|
If you don't have the backup priv_validator_state.json file, you will not have double sign protection on the first block. If this is the case, it's best to consult in the validator discord before starting your node.
|
|
|
|
## Restoring state procedure
|
|
|
|
1. Stop your node
|
|
|
|
```sh
|
|
kava stop
|
|
```
|
|
|
|
2. Copy the contents of your backup data directory back to the $KVD_HOME/data directory. By default this is ~/.kvd/data.
|
|
|
|
```sh
|
|
# Assumes backup is stored in "backup" directory
|
|
rm -rf ~/.kvd/data
|
|
mv backup/.kvd/data ~/.kvd/data
|
|
```
|
|
|
|
3. Install the previous version of kava
|
|
|
|
```sh
|
|
# from kava directory
|
|
git checkout v0.15.2
|
|
make install
|
|
## verify version
|
|
kvd version --long
|
|
```
|
|
|
|
4. Start kvd process
|
|
|
|
```sh
|
|
### be sure to remove --halt-time flag if it is set
|
|
sudo systemctl daemon-reload
|
|
sudo systemctl start kvd
|
|
```
|