> ## Documentation Index
> Fetch the complete documentation index at: https://docs.krews.xyz/llms.txt
> Use this file to discover all available pages before exploring further.

# Upgrade

> Upgrade an Aptos Public Fullnode (PFN) installed via Docker or from source. Minimal, correct steps with verification links.

<Note>
  These steps apply to **PFN** on **mainnet** or **testnet**. Your network is determined by the **docker image tag** or **git branch** and the **genesis/waypoint** files in your config.
</Note>

## A) Docker-based PFN

```bash theme={null}
# 1) Pull the new image
docker pull aptoslabs/validator:mainnet    # use :testnet for testnet

# 2) Stop + remove the old container (adjust the name if different)
docker stop aptos-pfn || true && docker rm aptos-pfn || true

# 3) Start with the SAME volume and your config (fullnode.yaml + genesis/waypoint)
docker run -d --name aptos-pfn   -v $(pwd):/opt/aptos/etc   -p 8080:8080 -p 9101:9101   aptoslabs/validator:mainnet   aptos-node -f /opt/aptos/etc/fullnode.yaml
```

## B) Source-based PFN

```bash theme={null}
# 1) Update source
cd aptos-core || git clone https://github.com/aptos-labs/aptos-core.git && cd aptos-core
git fetch --tags
git checkout origin/mainnet   # or origin/testnet

# 2) Rebuild
cargo build -p aptos-node --release

# 3) Restart your service/process using the new binary
# e.g., systemd: systemctl restart aptos-pfn
```

## Verify

* **REST**: `curl -s http://127.0.0.1:8080/v1 | jq` (returns chain\_id and ledger info)
* **Metrics**: `curl -s http://127.0.0.1:9101/metrics | head`
* **NHC** (optional): follow the Node Health Checker guide above.