How To Create an EtherLite validator node on VULTR or DIGITAL OCEAN

a-0-0-0-real-dex (59)in #blockchain • 3 years ago (edited)

Create an EtherLite validator node on VULTR or DIGITAL OCEAN server Ubuntu 20.04

Watch full video procedure on YouTube EtherLite UnOfficial

Find Original Procedure on GitHub

BEFORE YOU BEGIN, YOU WILL NEED:

100000 EtherLite (ETL)
A command line program e.g. http://www.putty.org
A VULTR or DIGITAL OCEAN server with Ubuntu 20.04
An ability to follow instructions to the letter!!!
Additional Support by Antares Discord Channel
Be aware, you are setting up a Validator Node on a remote server, and keeping your EtherLite Coins on a local MetaMask wallet. Your EtherLite Coins are never in danger from the remote server

You are now ready to configure your Server!

Recommended Server Size: 2 CPU Premium Intel/AMD or High Frequency with 2GB of RAM and 60+GB SSD (will work on 1GB of RAM with a SWAP file "NOT Recommended" see below) Note that you will have to Resize/Upgrade you Droplet/Server over time as the Blockchain will increase in size as well as the number of transactions per block.

If you have < 2GB of RAM on the system "NOT Recommended". We’ll have to set up a swapfile. If you have the required 2GB, feel free to skip to next step.

We can see if the system has any configured swap by typing:
```
sudo swapon --show
```
If you don’t get back any output, this means your system does not have swap space, follow procedure below.
```
sudo fallocate -l 2G /swapfile
sudo chmod 600 /swapfile
sudo mkswap /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo sysctl vm.swappiness=10
sudo sysctl vm.vfs_cache_pressure=50
```

Install Docker Engine and Docker Compose

sudo apt-get update
sudo apt-get upgrade

sudo curl -L "https://github.com/docker/compose/releases/download/1.29.2/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose
sudo ln -s /usr/local/bin/docker-compose /usr/bin/docker-compose

curl https://get.docker.com | sh
sudo usermod -aG docker $USER
sudo reboot

Sync Clock:

Your clock should by synchronized to prevent skipping block sealing.

Enter timedatectl status , you should see similar output:
```
Local time: Tue 2020-06-30 17:16:19 UTC
Universal time: Tue 2020-06-30 17:16:19 UTC
RTC time: Tue 2020-06-30 17:16:19
Time zone: Etc/UTC (UTC, +0000)
System clock synchronized: yes
systemd-timesyncd.service active: yes
RTC in local TZ: no
```
If System clock synchronized displays yes and Time zone is set to UTC, proceed to step 4.

If not, get help here: https://vitux.com/how-to-sync-system-time-with-internet-time-servers-on-ubuntu-20-04/

Clone this repo:

git clone https://github.com/antares-etherlite/validator-node-dockerized
cd validator-node-dockerized

Download the OpenEthereum From EtherLite Releases.

curl -L "https://github.com/etherlite-org/openethereum/releases/download/v3.2.2-rc.1/openethereum-ubuntu20.04.zip" -o openethereum.zip

Install unzip to unzip the downloaded OpenEthereum zip.
```
apt install -y unzip
```
Unzip the OpenEthereum zip
```
unzip openethereum.zip
```
Create password file for mining account.
```
echo "YOUR-VAL-UNIQUE-PASS" > password
```

Create your mining account

./openethereum account new --keys-path=data/keys --password=password --chain=etherlite

Save the return address for stept 11

Copy .env.example to .env
```
cp .env.example .env
```
Update .env file. There are a few settings you need to define:
```
nano .env

Update Parameter below.

EXT_IP=YOUR-EXTERNAL-IP-ADDRESS
ACCOUNT=0x...
```
- EXT_IP - External IP of the current server.
- ACCOUNT - Your mining address (with leading 0x).
Start your node.
```
docker-compose up -d
```
After docker containers are created, the node will sync with the chain (may take a while, 3+ hours).

To restart you need to use docker-compose stop and docker-compose start being in the validator-node-dockerized directory.

Check if sync is completed.

curl --data '{"method":"eth_syncing","params":[],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545

This is what you're waiting to see: {"jsonrpc":"2.0","result":false,"id":1}

Security.

There is no need to setup a UFW firewall (There are too many ports to allow for communication between nodes)

So make sure it is Offline. (There is nothing of value anyway, unless you are running other scripts with your EtherLite Node, Not recommended)
```
sudo ufw status
```
You should get "Status: inactive"

If not type:
```
sudo ufw disable
```
(Optional) We recommend you to install Fail2ban to avoid brute force attack.

Setup Monitoring with a crontab entry. (If your node go offline, it will restart automatically.)

sudo chmod 755 /root/validator-node-dockerized/cron/watchdognode.sh
crontab -e

Add this line to the end of the file plus(+) a carriage return(blank line). save and exit.

* * * * * $HOME/validator-node-dockerized/cron/watchdognode.sh > $HOME/validator-node-dockerized/cron/watchdognode.log 2>&1

(Optional) Monitor all your nodes with Site24x7. Receive Server Down, Critical or Trouble SMS/eMail alerts.

Double check if your validator node is working after ReBooting before you submit it to https://staking.etherlite.org
```
sudo reboot
```
Wait 2 minutes before login back in your server.
```
curl --data '{"method":"eth_syncing","params":[],"id":1,"jsonrpc":"2.0"}' -H "Content-Type: application/json" -X POST localhost:8545
```
Again, This is what you're waiting to see: {"jsonrpc":"2.0","result":false,"id":1}

Next test if RPC communication is enabled with your server, type http://YOUR-EXTERNAL-IP-ADDRES:8545 in any web browser.

This is the message you're waiting to see: Used HTTP Method is not allowed. POST or OPTIONS is required

Now you are ready to got to https://staking.etherlite.org. Just click the Become a Candidate Button and fill up the form.

All done now! You are now a Validator Node Master...

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#etherlite #validator #node #vultr #ubuntu #etl #ethereum

3 years ago in #blockchain by a-0-0-0-real-dex (59)

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