> For the complete documentation index, see [llms.txt](https://docs.ramestta.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.ramestta.com/welcome-to-ramestta/node-setup/sentry-node/testnet.md).
# Testnet
## Run a Sentry Node from Binaries
### Prerequisites:
`build-essential` installed on both the sentry and the validator machines.
To install:
```
sudo apt-get install build-essential
```
Go 1.18 installed on validator machine.
To install:
```
wget https://raw.githubusercontent.com/Ramestta-Blockchain/launch/master/go-install.sh
bash go-install.sh
sudo ln -nfs ~/.go/bin/go /usr/bin/go
```
Docker and RabbitMQ to install on validator machines.
```
sudo apt-get update
sudo apt install rabbitmq-server
```
To install sublime-text:
```
sudo snap install sublime-text --classic
```
#### Installing Heimdall:
Heimdall is the proof-of-stake verifier layer responsible for checkpointing the representation of the Plasma blocks to the Ramestta mainnet.
Clone the [Heimdall repository](https://github.com/Ramestta-Blockchain/heimdall):thumbsup:
```
git clone https://github.com/Ramestta-Blockchain/heimdall
```
```
cd heimdall
```
```
make build
make install
```
```
cd ~
source ~/.bashrc
```
Check the Heimdall installation:
```
heimdalld version --long
```
note
Before proceeding, Heimdall should be installed on both the sentry and validator machines.
#### Installing Bor
Bor is the sidechain operator that acts as the block production layer, which syncs with Heimdall to select block producers and verifiers for each span and sprint.
Clone the [Bor repository](https://github.com/Ramestta-Blockchain/bor):thumbsup:
```
git clone https://github.com/Ramestta-Blockchain/bor
```
```
cd bor
```
**Install Bor:**
```
make bor-all
```
**Create symlinks:**
```
sudo ln -nfs ~/bor/build/bin/bor /usr/bin/bor
sudo ln -nfs ~/bor/build/bin/bootnode /usr/bin/bootnode
```
**Check the Bor installation:**
```
bor version
```
note
Before proceeding, Bor should be installed on both the sentry and validator machines.
### Setting Up Node Files:
Node files need to be set up on both the sentry and validator machines.
#### Fetching the launch repository
Clone the[ launch repository](https://github.com/Ramestta-Blockchain/launch):
```
git clone https://github.com/Ramestta-Blockchain/launch
```
#### Setting up the launch directory
**On the validator machine**
Create a `node` directory:
```
mkdir -p node
```
Copy the files and scripts from the `launch` directory to the `node` directory:
```
cp -rf launch/testnet-v1/sentry/sentry/* ~/node
cp launch/testnet-v1/sentry-service.sh ~/node
```
#### Setting up the network directories:
**Setting up Heimdall**
Change to the `node` directory:
```
cd ~/node/heimdall
```
Run the setup script:
```
bash setup.sh
```
**Setting up Bor**
Change to the `node` directory:
```
cd ~/node/bor
```
Run the setup script:
```
bash setup.sh
```
### show enode:
```
bootnode -nodekey ~/.bor/data/bor/nodekey -writeaddress
```
Run the setup script:
```
bash setup.sh
```
### Setting Up the Services:
Run this section both on the sentry and validator machines.
Navigate to the `node` directory:
```
cd ~/node
```
Run the setup script:
```
bash sentry-service.sh
```
Copy the service file to the system directory:
```
sudo cp *.service /etc/systemd/system/
```
#### Starting the Heimdall service
You will now start the Heimdall service on the validator machine. Once the Heimdall service syncs, you will start the Bor service on the validator machine.
**Start the Heimdall service:**
```
sudo service heimdalld start
```
**Start the Heimdall rest-server:**
```
sudo service heimdalld-rest-server start
```
**Check the Heimdall service logs:**
```
journalctl -u heimdalld.service -f
```
**Check the Heimdall rest-server logs:**
```
journalctl -u heimdalld-rest-server.service -f
```
**Check the sync status of Heimdall:**
```
curl localhost:26657/status
```
In the output, the `catching_up` value is:
* `true` — the Heimdall service is syncing.
* `false` — the Heimdall service is synced.
Wait for the Heimdall service to fully sync.
#### Starting the Bor service
Once the Heimdall service on the validator machine syncs, start the Bor service on the validator machine.
**Start the Bor service:**
```
sudo service bor start
```
**Check the Bor service logs:**
```
journalctl -u bor.service -f
```
### Service to Auto Start After Server Crash/Reboot
```
sudo systemctl enable heimdalld
sudo systemctl enable heimdalld-rest-server
sudo systemctl enable bor
```