> For the complete documentation index, see [llms.txt](https://docs.pharos.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.pharos.xyz/pharos-testnet-rebuild-node-with-preserved-node-info.md).

# Pharos Testnet: Rebuild Node with Preserved Node Info

This guide helps you **rebuild your Pharos Testnet node** while preserving your **existing validator identity** (node info). This is useful when resetting the database but retaining validator keys and configuration.

***

### **1️⃣ Stop and Backup the Existing Node**

```
docker stop pharos-testnet
mv /data/testnet /data/testnet_bak
docker rm pharos-testnet
```

***

### **2️⃣ Start a Fresh Node Container**

```
docker run -d --name pharos-testnet \\
  -v /data/testnet:/data \\
  -p 18100:18100 -p 18200:18200 -p 19000:19000 \\
  public.ecr.aws/k2g7b7g1/pharos/testnet:63b85b6b
```

***

### **3️⃣ ⏳ Wait for Initial Sync (\~3 minutes)**

**Do not run docker stop or docker-compose down during this step.**

You can check sync progress using:

```
curl 127.0.0.1:18100/ \\
  -X POST \\
  -H "Content-Type: application/json" \\
  --data '{"method":"eth_blockNumber","params":[],"id":1,"jsonrpc":"2.0"}'
```

***

### **4️⃣ Stop the Node and Restore Node Identity**

```
docker stop pharos-testnet
```

Replace new config with the backup node info:

```
rm -rf /data/testnet/pharos-node/domain/light/data/
rm -rf /data/testnet/pharos-node/domain/light/certs/
rm -rf /data/testnet/resources/

mv /data/testnet_bak/pharos-node/domain/light/data/ /data/testnet/pharos-node/domain/light/data/
mv /data/testnet_bak/pharos-node/domain/light/certs/ /data/testnet/pharos-node/domain/light/certs/
mv /data/testnet_bak/resources/ /data/testnet/resources/
```

***

### **5️⃣ Restart and Finalize**

```
docker start pharos-testnet
```

Wait \~3 minutes again for sync to resume. You can check status using:

```
curl 127.0.0.1:18100/ \\
  -X POST \\
  -H "Content-Type: application/json" \\
  --data '{"method":"eth_blockNumber","params":[],"id":1,"jsonrpc":"2.0"}'
```

***

### **6️⃣ Clean Up Backup**

```
rm -rf /data/testnet_bak
```


---

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