# Run a chain via snapshot

## Workflow of running a chain node 

* Download snapshot

```
wget https://github.com/ipfs/kubo/releases/download/v0.29.0/kubo_v0.29.0_linux-amd64.tar.gz
tar -xzvf kubo_v0.29.0_linux-amd64.tar.gz
cd kubo/
sudo install -C ipfs /usr/local/bin/
ipfs init
nohup ipfs daemon >> ipfs.log &
ipfs get QmarXGUefS13Kve52iLraMwP2VHU93yzkB8Lj8z8yhPLqw
```

* Replace data

`QmarXGUefS13Kve52iLraMwP2VHU93yzkB8Lj8z8yhPLqw` has been downloaded. Unzip the `node-data.tar.gz` to the specified chain node data directory, replace the original data directory node-data, and then restart the chain service node. Assume that your link node data directory is `~/bool-beta-testnode`

```
mv ~/bool-beta-testnode/node-data ~/bool-beta-testnode/node-data_old
tar -zxvf kubo/QmarXGUefS13Kve52iLraMwP2VHU93yzkB8Lj8z8yhPLqw/node-data.tar.gz  -C ~/bool-beta-testnode/
```

* (Optional) Modify docker-compose.yaml

Modify the node's docker-compose.yaml configuration to remove `--state-pruning archive` and `--block-pruning archive`

```
sed -i '/--state-pruning archive/d;/--blocks-pruning archive/d' docker-compose.yaml
```

* Start the chain service node

```
docker-compose up -d
```


---

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